- 23 Jan, 2020 6 commits
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Hayes Wang authored
Fix the runtime resume doesn't work normally for linking change. 1. Reset the settings and status of runtime suspend. 2. Sync the linking status. 3. Poll the linking change. Signed-off-by:
Hayes Wang <hayeswang@realtek.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Eric Dumazet authored
A malicious user could use RAW sockets and fool GTP using them as standard SOCK_DGRAM UDP sockets. BUG: KMSAN: uninit-value in udp_tunnel_encap_enable include/net/udp_tunnel.h:174 [inline] BUG: KMSAN: uninit-value in setup_udp_tunnel_sock+0x45e/0x6f0 net/ipv4/udp_tunnel.c:85 CPU: 0 PID: 11262 Comm: syz-executor613 Not tainted 5.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 udp_tunnel_encap_enable include/net/udp_tunnel.h:174 [inline] setup_udp_tunnel_sock+0x45e/0x6f0 net/ipv4/udp_tunnel.c:85 gtp_encap_enable_socket+0x37f/0x5a0 drivers/net/gtp.c:827 gtp_encap_enable drivers/net/gtp.c:844 [inline] gtp_newlink+0xfb/0x1e50 drivers/net/gtp.c:666 __rtnl_newlink net/core/rtnetlink.c:3305 [inline] rtnl_newlink+0x2973/0x3920 net/core/rtnetlink.c:3363 rtnetlink_rcv_msg+0x1153/0x1570 net/core/rtnetlink.c:5424 netlink_rcv_skb+0x451/0x650 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5442 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0xf9e/0x1100 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x1248/0x14d0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg net/socket.c:659 [inline] ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2330 ___sys_sendmsg net/socket.c:2384 [inline] __sys_sendmsg+0x451/0x5f0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2424 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2424 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x441359 Code: e8 ac e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 eb 08 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fff1cd0ac28 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 0000000000441359 RDX: 0000000000000000 RSI: 0000000020000100 RDI: 0000000000000003 RBP: 00000000006cb018 R08: 00000000004002c8 R09: 00000000004002c8 R10: 00000000004002c8 R11: 0000000000000246 R12: 00000000004020d0 R13: 0000000000402160 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags+0x3c/0x90 mm/kmsan/kmsan.c:144 kmsan_internal_alloc_meta_for_pages mm/kmsan/kmsan_shadow.c:307 [inline] kmsan_alloc_page+0x12a/0x310 mm/kmsan/kmsan_shadow.c:336 __alloc_pages_nodemask+0x57f2/0x5f60 mm/page_alloc.c:4800 alloc_pages_current+0x67d/0x990 mm/mempolicy.c:2207 alloc_pages include/linux/gfp.h:534 [inline] alloc_slab_page+0x111/0x12f0 mm/slub.c:1511 allocate_slab mm/slub.c:1656 [inline] new_slab+0x2bc/0x1130 mm/slub.c:1722 new_slab_objects mm/slub.c:2473 [inline] ___slab_alloc+0x1533/0x1f30 mm/slub.c:2624 __slab_alloc mm/slub.c:2664 [inline] slab_alloc_node mm/slub.c:2738 [inline] slab_alloc mm/slub.c:2783 [inline] kmem_cache_alloc+0xb23/0xd70 mm/slub.c:2788 sk_prot_alloc+0xf2/0x620 net/core/sock.c:1597 sk_alloc+0xf0/0xbe0 net/core/sock.c:1657 inet_create+0x7c7/0x1370 net/ipv4/af_inet.c:321 __sock_create+0x8eb/0xf00 net/socket.c:1420 sock_create net/socket.c:1471 [inline] __sys_socket+0x1a1/0x600 net/socket.c:1513 __do_sys_socket net/socket.c:1522 [inline] __se_sys_socket+0x8d/0xb0 net/socket.c:1520 __x64_sys_socket+0x4a/0x70 net/socket.c:1520 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 459aa660 ("gtp: add initial driver for datapath of GPRS Tunneling Protocol (GTP-U)") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Pablo Neira <pablo@netfilter.org> Reported-by:
syzbot <syzkaller@googlegroups.com> Signed-off-by:
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Eric Dumazet authored
rtnl_create_link() needs to apply dev->min_mtu and dev->max_mtu checks that we apply in do_setlink() Otherwise malicious users can crash the kernel, for example after an integer overflow : BUG: KASAN: use-after-free in memset include/linux/string.h:365 [inline] BUG: KASAN: use-after-free in __alloc_skb+0x37b/0x5e0 net/core/skbuff.c:238 Write of size 32 at addr ffff88819f20b9c0 by task swapper/0/0 CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.5.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_address_description.constprop.0.cold+0xd4/0x30b mm/kasan/report.c:374 __kasan_report.cold+0x1b/0x41 mm/kasan/report.c:506 kasan_report+0x12/0x20 mm/kasan/common.c:639 check_memory_region_inline mm/kasan/generic.c:185 [inline] check_memory_region+0x134/0x1a0 mm/kasan/generic.c:192 memset+0x24/0x40 mm/kasan/common.c:108 memset include/linux/string.h:365 [inline] __alloc_skb+0x37b/0x5e0 net/core/skbuff.c:238 alloc_skb include/linux/skbuff.h:1049 [inline] alloc_skb_with_frags+0x93/0x590 net/core/skbuff.c:5664 sock_alloc_send_pskb+0x7ad/0x920 net/core/sock.c:2242 sock_alloc_send_skb+0x32/0x40 net/core/sock.c:2259 mld_newpack+0x1d7/0x7f0 net/ipv6/mcast.c:1609 add_grhead.isra.0+0x299/0x370 net/ipv6/mcast.c:1713 add_grec+0x7db/0x10b0 net/ipv6/mcast.c:1844 mld_send_cr net/ipv6/mcast.c:1970 [inline] mld_ifc_timer_expire+0x3d3/0x950 net/ipv6/mcast.c:2477 call_timer_fn+0x1ac/0x780 kernel/time/timer.c:1404 expire_timers kernel/time/timer.c:1449 [inline] __run_timers kernel/time/timer.c:1773 [inline] __run_timers kernel/time/timer.c:1740 [inline] run_timer_softirq+0x6c3/0x1790 kernel/time/timer.c:1786 __do_softirq+0x262/0x98c kernel/softirq.c:292 invoke_softirq kernel/softirq.c:373 [inline] irq_exit+0x19b/0x1e0 kernel/softirq.c:413 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x1a3/0x610 arch/x86/kernel/apic/apic.c:1137 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:829 </IRQ> RIP: 0010:native_safe_halt+0xe/0x10 arch/x86/include/asm/irqflags.h:61 Code: 98 6b ea f9 eb 8a cc cc cc cc cc cc e9 07 00 00 00 0f 00 2d 44 1c 60 00 f4 c3 66 90 e9 07 00 00 00 0f 00 2d 34 1c 60 00 fb f4 <c3> cc 55 48 89 e5 41 57 41 56 41 55 41 54 53 e8 4e 5d 9a f9 e8 79 RSP: 0018:ffffffff89807ce8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13266ae RBX: ffffffff8987a1c0 RCX: 0000000000000000 RDX: dffffc0000000000 RSI: 0000000000000006 RDI: ffffffff8987aa54 RBP: ffffffff89807d18 R08: ffffffff8987a1c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: dffffc0000000000 R13: ffffffff8a799980 R14: 0000000000000000 R15: 0000000000000000 arch_cpu_idle+0xa/0x10 arch/x86/kernel/process.c:690 default_idle_call+0x84/0xb0 kernel/sched/idle.c:94 cpuidle_idle_call kernel/sched/idle.c:154 [inline] do_idle+0x3c8/0x6e0 kernel/sched/idle.c:269 cpu_startup_entry+0x1b/0x20 kernel/sched/idle.c:361 rest_init+0x23b/0x371 init/main.c:451 arch_call_rest_init+0xe/0x1b start_kernel+0x904/0x943 init/main.c:784 x86_64_start_reservations+0x29/0x2b arch/x86/kernel/head64.c:490 x86_64_start_kernel+0x77/0x7b arch/x86/kernel/head64.c:471 secondary_startup_64+0xa4/0xb0 arch/x86/kernel/head_64.S:242 The buggy address belongs to the page: page:ffffea00067c82c0 refcount:0 mapcount:0 mapping:0000000000000000 index:0x0 raw: 057ffe0000000000 ffffea00067c82c8 ffffea00067c82c8 0000000000000000 raw: 0000000000000000 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88819f20b880: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88819f20b900: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff >ffff88819f20b980: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ^ ffff88819f20ba00: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ffff88819f20ba80: ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff ff Fixes: 61e84623 ("net: centralize net_device min/max MTU checking") Signed-off-by: -
Michael Ellerman authored
The driver for Cisco Aironet 4500 and 4800 series cards (airo.c), implements AIROOLDIOCTL/SIOCDEVPRIVATE in airo_ioctl(). The ioctl handler copies an aironet_ioctl struct from userspace, which includes a command. Some of the commands are handled in readrids(), where the user controlled command is converted into a driver-internal value called "ridcode". There are two command values, AIROGWEPKTMP and AIROGWEPKNV, which correspond to ridcode values of RID_WEP_TEMP and RID_WEP_PERM respectively. These commands both have checks that the user has CAP_NET_ADMIN, with the comment that "Only super-user can read WEP keys", otherwise they return -EPERM. However there is another command value, AIRORRID, that lets the user specify the ridcode value directly, with no other checks. This means the user can bypass the CAP_NET_ADMIN check on AIROGWEPKTMP and AIROGWEPKNV. Fix it by moving the CAP_NET_ADMIN check out of the command handling and instead do it later based on the ridcode. That way regardless of whether the ridcode is set via AIROGWEPKTMP or AIROGWEPKNV, or passed in using AIRORID, we always do the CAP_NET_ADMIN check. Found by Ilja by code inspection, not tested as I don't have the required hardware. Reported-by:
Ilja Van Sprundel <ivansprundel@ioactive.com> Signed-off-by:
Michael Ellerman <mpe@ellerman.id.au> Signed-off-by:
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Michael Ellerman authored
The driver for Cisco Aironet 4500 and 4800 series cards (airo.c), implements AIROOLDIOCTL/SIOCDEVPRIVATE in airo_ioctl(). The ioctl handler copies an aironet_ioctl struct from userspace, which includes a command and a length. Some of the commands are handled in readrids(), which kmalloc()'s a buffer of RIDSIZE (2048) bytes. That buffer is then passed to PC4500_readrid(), which has two cases. The else case does some setup and then reads up to RIDSIZE bytes from the hardware into the kmalloc()'ed buffer. Here len == RIDSIZE, pBuf is the kmalloc()'ed buffer: // read the rid length field bap_read(ai, pBuf, 2, BAP1); // length for remaining part of rid len = min(len, (int)le16_to_cpu(*(__le16*)pBuf)) - 2; ... // read remainder of the rid rc = bap_read(ai, ((__le16*)pBuf)+1, len, BAP1); PC4500_readrid() then returns to readrids() which does: len = comp->len; if (copy_to_user(comp->data, iobuf, min(len, (int)RIDSIZE))) { Where comp->len is the user controlled length field. So if the "rid length field" returned by the hardware is < 2048, and the user requests 2048 bytes in comp->len, we will leak the previous contents of the kmalloc()'ed buffer to userspace. Fix it by kzalloc()'ing the buffer. Found by Ilja by code inspection, not tested as I don't have the required hardware. Reported-by: -
Andrew Lunn authored
phylink and phylib are interconnected. It makes sense for phylib and phy driver patches to be also reviewed by the phylink maintainer. So add Russell King as a designed reviewer of phylib. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Acked-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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- 22 Jan, 2020 7 commits
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William Dauchy authored
in the same manner as commit d0f41851 ("net, ip_tunnel: fix namespaces move"), fix namespace moving as it was broken since commit 8d79266b ("ip6_tunnel: add collect_md mode to IPv6 tunnel"), but for ipv6 this time; there is no reason to keep it for ip6_tunnel. Fixes: 8d79266b ("ip6_tunnel: add collect_md mode to IPv6 tunnel") Signed-off-by:
William Dauchy <w.dauchy@criteo.com> Acked-by:
Nicolas Dichtel <nicolas.dichtel@6wind.com> Signed-off-by:
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Eric Dumazet authored
sysbot found another issue in tc_new_tfilter(). We probably should use @name which contains the sanitized version of TCA_KIND. BUG: KMSAN: uninit-value in string_nocheck lib/vsprintf.c:608 [inline] BUG: KMSAN: uninit-value in string+0x522/0x690 lib/vsprintf.c:689 CPU: 1 PID: 10753 Comm: syz-executor.1 Not tainted 5.5.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1c9/0x220 lib/dump_stack.c:118 kmsan_report+0xf7/0x1e0 mm/kmsan/kmsan_report.c:118 __msan_warning+0x58/0xa0 mm/kmsan/kmsan_instr.c:215 string_nocheck lib/vsprintf.c:608 [inline] string+0x522/0x690 lib/vsprintf.c:689 vsnprintf+0x207d/0x31b0 lib/vsprintf.c:2574 __request_module+0x2ad/0x11c0 kernel/kmod.c:143 tcf_proto_lookup_ops+0x241/0x720 net/sched/cls_api.c:139 tcf_proto_create net/sched/cls_api.c:262 [inline] tc_new_tfilter+0x2a4e/0x5010 net/sched/cls_api.c:2058 rtnetlink_rcv_msg+0xcb7/0x1570 net/core/rtnetlink.c:5415 netlink_rcv_skb+0x451/0x650 net/netlink/af_netlink.c:2477 rtnetlink_rcv+0x50/0x60 net/core/rtnetlink.c:5442 netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] netlink_unicast+0xf9e/0x1100 net/netlink/af_netlink.c:1328 netlink_sendmsg+0x1248/0x14d0 net/netlink/af_netlink.c:1917 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg net/socket.c:659 [inline] ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2330 ___sys_sendmsg net/socket.c:2384 [inline] __sys_sendmsg+0x451/0x5f0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2424 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2424 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45b349 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f88b3948c78 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f88b39496d4 RCX: 000000000045b349 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000003 RBP: 000000000075bfc8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 000000000000099f R14: 00000000004cb163 R15: 000000000075bfd4 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:144 [inline] kmsan_internal_poison_shadow+0x66/0xd0 mm/kmsan/kmsan.c:127 kmsan_slab_alloc+0x8a/0xe0 mm/kmsan/kmsan_hooks.c:82 slab_alloc_node mm/slub.c:2774 [inline] __kmalloc_node_track_caller+0xb40/0x1200 mm/slub.c:4382 __kmalloc_reserve net/core/skbuff.c:141 [inline] __alloc_skb+0x2fd/0xac0 net/core/skbuff.c:209 alloc_skb include/linux/skbuff.h:1049 [inline] netlink_alloc_large_skb net/netlink/af_netlink.c:1174 [inline] netlink_sendmsg+0x7d3/0x14d0 net/netlink/af_netlink.c:1892 sock_sendmsg_nosec net/socket.c:639 [inline] sock_sendmsg net/socket.c:659 [inline] ____sys_sendmsg+0x12b6/0x1350 net/socket.c:2330 ___sys_sendmsg net/socket.c:2384 [inline] __sys_sendmsg+0x451/0x5f0 net/socket.c:2417 __do_sys_sendmsg net/socket.c:2426 [inline] __se_sys_sendmsg+0x97/0xb0 net/socket.c:2424 __x64_sys_sendmsg+0x4a/0x70 net/socket.c:2424 do_syscall_64+0xb8/0x160 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x44/0xa9 Fixes: 6f96c3c6 ("net_sched: fix backward compatibility for TCA_KIND") Signed-off-by:
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Paolo Abeni authored
This reverts commit 0d4a6608. Williem reported that after commit 0d4a6608 ("udp: do rmem bulk free even if the rx sk queue is empty") the memory allocated by an almost idle system with many UDP sockets can grow a lot. For stable kernel keep the solution as simple as possible and revert the offending commit. Reported-by:
Willem de Bruijn <willemdebruijn.kernel@gmail.com> Diagnosed-by:
Eric Dumazet <eric.dumazet@gmail.com> Fixes: 0d4a6608 ("udp: do rmem bulk free even if the rx sk queue is empty") Signed-off-by:
Paolo Abeni <pabeni@redhat.com> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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David S. Miller authored
Signed-off-by:
Jakub Kicinski <kuba@kernel.org>
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Maxim Mikityanskiy authored
Commit 323ebb61 ("net: use listified RX for handling GRO_NORMAL skbs") introduces batching of GRO_NORMAL packets in napi_frags_finish, and commit 6570bc79 ("net: core: use listified Rx for GRO_NORMAL in napi_gro_receive()") adds the same to napi_skb_finish. However, dev_gro_receive (that is called just before napi_{frags,skb}_finish) can also pass skbs to the networking stack: e.g., when the GRO session is flushed, napi_gro_complete is called, which passes pp directly to netif_receive_skb_internal, skipping napi->rx_list. It means that the packet stored in pp will be handled by the stack earlier than the packets that arrived before, but are still waiting in napi->rx_list. It leads to TCP reorderings that can be observed in the TCPOFOQueue counter in netstat. This commit fixes the reordering issue by making napi_gro_complete also use napi->rx_list, so that all packets going through GRO will keep their order. In order to keep napi_gro_flush working properly, gro_normal_list calls are moved after the flush to clear napi->rx_list. iwlwifi calls napi_gro_flush directly and does the same thing that is done by gro_normal_list, so the same change is applied there: napi_gro_flush is moved to be before the flush of napi->rx_list. A few other drivers also use napi_gro_flush (brocade/bna/bnad.c, cortina/gemini.c, hisilicon/hns3/hns3_enet.c). The first two also use napi_complete_done afterwards, which performs the gro_normal_list flush, so they are fine. The latter calls napi_gro_receive right after napi_gro_flush, so it can end up with non-empty napi->rx_list anyway. Fixes: 323ebb61 ("net: use listified RX for handling GRO_NORMAL skbs") Signed-off-by:
Maxim Mikityanskiy <maximmi@mellanox.com> Cc: Alexander Lobakin <alobakin@dlink.ru> Cc: Edward Cree <ecree@solarflare.com> Acked-by:
Alexander Lobakin <alobakin@dlink.ru> Acked-by:
Saeed Mahameed <saeedm@mellanox.com> Acked-by:
Edward Cree <ecree@solarflare.com> Signed-off-by:
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Richard Palethorpe authored
write_wakeup can happen in parallel with close/hangup where tty->disc_data is set to NULL and the netdevice is freed thus also freeing disc_data. write_wakeup accesses disc_data so we must prevent close from freeing the netdev while write_wakeup has a non-NULL view of tty->disc_data. We also need to make sure that accesses to disc_data are atomic. Which can all be done with RCU. This problem was found by Syzkaller on SLCAN, but the same issue is reproducible with the SLIP line discipline using an LTP test based on the Syzkaller reproducer. A fix which didn't use RCU was posted by Hillf Danton. Fixes: 661f7fda ("slip: Fix deadlock in write_wakeup") Fixes: a8e83b17 ("slcan: Port write_wakeup deadlock fix from slip") Reported-by: syzbot+017e491ae13c0068598a@syzkaller.appspotmail.com Signed-off-by:
Richard Palethorpe <rpalethorpe@suse.com> Cc: Wolfgang Grandegger <wg@grandegger.com> Cc: Marc Kleine-Budde <mkl@pengutronix.de> Cc: "David S. Miller" <davem@davemloft.net> Cc: Tyler Hall <tylerwhall@gmail.com> Cc: linux-can@vger.kernel.org Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Cc: syzkaller@googlegroups.com Signed-off-by:
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Jakub Sitnicki authored
As John Fastabend reports [0], psock state tear-down can happen on receive path *after* unlocking the socket, if the only other psock user, that is sockmap or sockhash, releases its psock reference before tcp_bpf_recvmsg does so: tcp_bpf_recvmsg() psock = sk_psock_get(sk) <- refcnt 2 lock_sock(sk); ... sock_map_free() <- refcnt 1 release_sock(sk) sk_psock_put() <- refcnt 0 Remove the lockdep check for socket lock in psock tear-down that got introduced in 7e81a353 ("bpf: Sockmap, ensure sock lock held during tear down"). [0] https://lore.kernel.org/netdev/5e25dc995d7d_74082aaee6e465b441@john-XPS-13-9370.notmuch/ Fixes: 7e81a353 ("bpf: Sockmap, ensure sock lock held during tear down") Reported-by: syzbot+d73682fcf7fee6982fe3@syzkaller.appspotmail.com Suggested-by:John Fastabend <john.fastabend@gmail.com> Signed-off-by:
Jakub Sitnicki <jakub@cloudflare.com> Acked-by:
Daniel Borkmann <daniel@iogearbox.net> Signed-off-by:
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- 21 Jan, 2020 7 commits
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William Dauchy authored
in the same manner as commit 690afc16 ("net: ip6_gre: fix moving ip6gre between namespaces"), fix namespace moving as it was broken since commit 2e15ea39 ("ip_gre: Add support to collect tunnel metadata."). Indeed, the ip6_gre commit removed the local flag for collect_md condition, so there is no reason to keep it for ip_gre/ip_tunnel. this patch will fix both ip_tunnel and ip_gre modules. Fixes: 2e15ea39 ("ip_gre: Add support to collect tunnel metadata.") Signed-off-by:
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Theodore Dubois authored
Not sure how this got in here. git blame says the second assignment was added in 3a9a57f6, but that commit also removed the first assignment. Signed-off-by:
Theodore Dubois <tblodt@icloud.com> Signed-off-by:
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James Hughes authored
As reported by Eric Dumazet, there are still some outstanding cases where the driver does not handle TSO correctly when skb's are over a certain size. Most cases have been fixed, this patch should ensure that forwarded SKB's that are greater than MAX_SINGLE_PACKET_SIZE - TX_OVERHEAD are software segmented and handled correctly. Signed-off-by:
James Hughes <james.hughes@raspberrypi.org> Reviewed-by:
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Wen Yang authored
do_div() does a 64-by-32 division. Use div64_long() instead of it if the divisor is long, to avoid truncation to 32-bit. And as a nice side effect also cleans up the function a bit. Signed-off-by:
Wen Yang <wenyang@linux.alibaba.com> Cc: Eric Dumazet <edumazet@google.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Alexey Kuznetsov <kuznet@ms2.inr.ac.ru> Cc: Hideaki YOSHIFUJI <yoshfuji@linux-ipv6.org> Cc: netdev@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by:
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Jouni Hogander authored
Netdev_register_kobject is calling device_initialize. In case of error reference taken by device_initialize is not given up. Drivers are supposed to call free_netdev in case of error. In non-error case the last reference is given up there and device release sequence is triggered. In error case this reference is kept and the release sequence is never started. Fix this by setting reg_state as NETREG_UNREGISTERED if registering fails. This is the rootcause for couple of memory leaks reported by Syzkaller: BUG: memory leak unreferenced object 0xffff8880675ca008 (size 256): comm "netdev_register", pid 281, jiffies 4294696663 (age 6.808s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ backtrace: [<0000000058ca4711>] kmem_cache_alloc_trace+0x167/0x280 [<000000002340019b>] device_add+0x882/0x1750 [<000000001d588c3a>] netdev_register_kobject+0x128/0x380 [<0000000011ef5535>] register_netdevice+0xa1b/0xf00 [<000000007fcf1c99>] __tun_chr_ioctl+0x20d5/0x3dd0 [<000000006a5b7b2b>] tun_chr_ioctl+0x2f/0x40 [<00000000f30f834a>] do_vfs_ioctl+0x1c7/0x1510 [<00000000fba062ea>] ksys_ioctl+0x99/0xb0 [<00000000b1c1b8d2>] __x64_sys_ioctl+0x78/0xb0 [<00000000984cabb9>] do_syscall_64+0x16f/0x580 [<000000000bde033d>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [<00000000e6ca2d9f>] 0xffffffffffffffff BUG: memory leak unreferenced object 0xffff8880668ba588 (size 8): comm "kobject_set_nam", pid 286, jiffies 4294725297 (age 9.871s) hex dump (first 8 bytes): 6e 72 30 00 cc be df 2b nr0....+ backtrace: [<00000000a322332a>] __kmalloc_track_caller+0x16e/0x290 [<00000000236fd26b>] kstrdup+0x3e/0x70 [<00000000dd4a2815>] kstrdup_const+0x3e/0x50 [<0000000049a377fc>] kvasprintf_const+0x10e/0x160 [<00000000627fc711>] kobject_set_name_vargs+0x5b/0x140 [<0000000019eeab06>] dev_set_name+0xc0/0xf0 [<0000000069cb12bc>] netdev_register_kobject+0xc8/0x320 [<00000000f2e83732>] register_netdevice+0xa1b/0xf00 [<000000009e1f57cc>] __tun_chr_ioctl+0x20d5/0x3dd0 [<000000009c560784>] tun_chr_ioctl+0x2f/0x40 [<000000000d759e02>] do_vfs_ioctl+0x1c7/0x1510 [<00000000351d7c31>] ksys_ioctl+0x99/0xb0 [<000000008390040a>] __x64_sys_ioctl+0x78/0xb0 [<0000000052d196b7>] do_syscall_64+0x16f/0x580 [<0000000019af9236>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [<00000000bc384531>] 0xffffffffffffffff v3 -> v4: Set reg_state to NETREG_UNREGISTERED if registering fails v2 -> v3: * Replaced BUG_ON with WARN_ON in free_netdev and netdev_release v1 -> v2: * Relying on driver calling free_netdev rather than calling put_device directly in error path Reported-by: syzbot+ad8ca40ecd77896d51e2@syzkaller.appspotmail.com Cc: David Miller <davem@davemloft.net> Cc: Greg Kroah-Hartman <gregkh@linuxfoundation.org> Cc: Lukas Bulwahn <lukas.bulwahn@gmail.com> Signed-off-by:Jouni Hogander <jouni.hogander@unikie.com> Signed-off-by:
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Yuki Taguchi authored
After LRO/GRO is applied, SRv6 encapsulated packets have SKB_GSO_IPXIP6 feature flag, and this flag must be removed right after decapulation procedure. Currently, SKB_GSO_IPXIP6 flag is not removed on End.D* actions, which creates inconsistent packet state, that is, a normal TCP/IP packets have the SKB_GSO_IPXIP6 flag. This behavior can cause unexpected fallback to GSO on routing to netdevices that do not support SKB_GSO_IPXIP6. For example, on inter-VRF forwarding, decapsulated packets separated into small packets by GSO because VRF devices do not support TSO for packets with SKB_GSO_IPXIP6 flag, and this degrades forwarding performance. This patch removes encapsulation related GSO flags from the skb right after the End.D* action is applied. Fixes: d7a669dd ("ipv6: sr: add helper functions for seg6local") Signed-off-by:
Yuki Taguchi <tagyounit@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/klassert/ipsecDavid S. Miller authored
Steffen Klassert says: ==================== pull request (net): ipsec 2020-01-21 1) Fix packet tx through bpf_redirect() for xfrm and vti interfaces. From Nicolas Dichtel. 2) Do not confirm neighbor when do pmtu update on a virtual xfrm interface. From Xu Wang. 3) Support output_mark for offload ESP packets, this was forgotten when the output_mark was added initially. From Ulrich Weber. Please pull or let me know if there are problems. ==================== Signed-off-by:
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- 20 Jan, 2020 2 commits
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xiaofeng.yan authored
A compliation error happen when building branch 5.5-rc7 In file included from net/hsr/hsr_main.c:12:0: net/hsr/hsr_main.h:194:20: error: two or more data types in declaration specifiers static inline void void hsr_debugfs_rename(struct net_device *dev) So Removed one void. Fixes: 4c2d5e33 ("hsr: rename debugfs file when interface name is changed") Signed-off-by:
xiaofeng.yan <yanxiaofeng7@jd.com> Acked-by:
Taehee Yoo <ap420073@gmail.com> Signed-off-by:
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Niko Kortstrom authored
Support for moving IPv4 GRE tunnels between namespaces was added in commit b57708ad ("gre: add x-netns support"). The respective change for IPv6 tunnels, commit 22f08069 ("ip6gre: add x-netns support") did not drop NETIF_F_NETNS_LOCAL flag so moving them from one netns to another is still denied in IPv6 case. Drop NETIF_F_NETNS_LOCAL flag from ip6gre tunnels to allow moving ip6gre tunnel endpoints between network namespaces. Signed-off-by:
Niko Kortstrom <niko.kortstrom@nokia.com> Acked-by:
William Tu <u9012063@gmail.com> Signed-off-by:
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- 19 Jan, 2020 8 commits
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git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linuxLinus Torvalds authored
Pull RISC-V fixes from Paul Walmsley: "Three fixes for RISC-V: - Don't free and reuse memory containing the code that CPUs parked at boot reside in. - Fix rv64 build problems for ubsan and some modules by adding logical and arithmetic shift helpers for 128-bit values. These are from libgcc and are similar to what's present for ARM64. - Fix vDSO builds to clean up their own temporary files" * tag 'riscv/for-v5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/riscv/linux: riscv: Less inefficient gcc tishift helpers (and export their symbols) riscv: delete temporary files riscv: make sure the cores stay looping in .Lsecondary_park -
git://git.kernel.org/pub/scm/linux/kernel/git/netdev/netLinus Torvalds authored
Pull networking fixes from David Miller: 1) Fix non-blocking connect() in x25, from Martin Schiller. 2) Fix spurious decryption errors in kTLS, from Jakub Kicinski. 3) Netfilter use-after-free in mtype_destroy(), from Cong Wang. 4) Limit size of TSO packets properly in lan78xx driver, from Eric Dumazet. 5) r8152 probe needs an endpoint sanity check, from Johan Hovold. 6) Prevent looping in tcp_bpf_unhash() during sockmap/tls free, from John Fastabend. 7) hns3 needs short frames padded on transmit, from Yunsheng Lin. 8) Fix netfilter ICMP header corruption, from Eyal Birger. 9) Fix soft lockup when low on memory in hns3, from Yonglong Liu. 10) Fix NTUPLE firmware command failures in bnxt_en, from Michael Chan. 11) Fix memory leak in act_ctinfo, from Eric Dumazet. * git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (91 commits) cxgb4: reject overlapped queues in TC-MQPRIO offload cxgb4: fix Tx multi channel port rate limit net: sched: act_ctinfo: fix memory leak bnxt_en: Do not treat DSN (Digital Serial Number) read failure as fatal. bnxt_en: Fix ipv6 RFS filter matching logic. bnxt_en: Fix NTUPLE firmware command failures. net: systemport: Fixed queue mapping in internal ring map net: dsa: bcm_sf2: Configure IMP port for 2Gb/sec net: dsa: sja1105: Don't error out on disabled ports with no phy-mode net: phy: dp83867: Set FORCE_LINK_GOOD to default after reset net: hns: fix soft lockup when there is not enough memory net: avoid updating qdisc_xmit_lock_key in netdev_update_lockdep_key() net/sched: act_ife: initalize ife->metalist earlier netfilter: nat: fix ICMP header corruption on ICMP errors net: wan: lapbether.c: Use built-in RCU list checking netfilter: nf_tables: fix flowtable list del corruption netfilter: nf_tables: fix memory leak in nf_tables_parse_netdev_hooks() netfilter: nf_tables: remove WARN and add NLA_STRING upper limits netfilter: nft_tunnel: ERSPAN_VERSION must not be null netfilter: nft_tunnel: fix null-attribute check ... -
git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linuxLinus Torvalds authored
Pull i2c fixes from Wolfram Sang: "Two runtime PM fixes and one leak fix" * 'i2c/for-current' of git://git.kernel.org/pub/scm/linux/kernel/git/wsa/linux: i2c: iop3xx: Fix memory leak in probe error path i2c: tegra: Properly disable runtime PM on driver's probe error i2c: tegra: Fix suspending in active runtime PM state
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Rahul Lakkireddy authored
A queue can't belong to multiple traffic classes. So, reject any such configuration that results in overlapped queues for a traffic class. Fixes: b1396c2b ("cxgb4: parse and configure TC-MQPRIO offload") Signed-off-by:
Rahul Lakkireddy <rahul.lakkireddy@chelsio.com> Signed-off-by:
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Rahul Lakkireddy authored
T6 can support 2 egress traffic management channels per port to double the total number of traffic classes that can be configured. In this configuration, if the class belongs to the other channel, then all the queues must be bound again explicitly to the new class, for the rate limit parameters on the other channel to take effect. So, always explicitly bind all queues to the port rate limit traffic class, regardless of the traffic management channel that it belongs to. Also, only bind queues to port rate limit traffic class, if all the queues don't already belong to an existing different traffic class. Fixes: 4ec4762d ("cxgb4: add TC-MATCHALL classifier egress offload") Signed-off-by:
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Eric Dumazet authored
Implement a cleanup method to properly free ci->params BUG: memory leak unreferenced object 0xffff88811746e2c0 (size 64): comm "syz-executor617", pid 7106, jiffies 4294943055 (age 14.250s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ................ c0 34 60 84 ff ff ff ff 00 00 00 00 00 00 00 00 .4`............. backtrace: [<0000000015aa236f>] kmemleak_alloc_recursive include/linux/kmemleak.h:43 [inline] [<0000000015aa236f>] slab_post_alloc_hook mm/slab.h:586 [inline] [<0000000015aa236f>] slab_alloc mm/slab.c:3320 [inline] [<0000000015aa236f>] kmem_cache_alloc_trace+0x145/0x2c0 mm/slab.c:3549 [<000000002c946bd1>] kmalloc include/linux/slab.h:556 [inline] [<000000002c946bd1>] kzalloc include/linux/slab.h:670 [inline] [<000000002c946bd1>] tcf_ctinfo_init+0x21a/0x530 net/sched/act_ctinfo.c:236 [<0000000086952cca>] tcf_action_init_1+0x400/0x5b0 net/sched/act_api.c:944 [<000000005ab29bf8>] tcf_action_init+0x135/0x1c0 net/sched/act_api.c:1000 [<00000000392f56f9>] tcf_action_add+0x9a/0x200 net/sched/act_api.c:1410 [<0000000088f3c5dd>] tc_ctl_action+0x14d/0x1bb net/sched/act_api.c:1465 [<000000006b39d986>] rtnetlink_rcv_msg+0x178/0x4b0 net/core/rtnetlink.c:5424 [<00000000fd6ecace>] netlink_rcv_skb+0x61/0x170 net/netlink/af_netlink.c:2477 [<0000000047493d02>] rtnetlink_rcv+0x1d/0x30 net/core/rtnetlink.c:5442 [<00000000bdcf8286>] netlink_unicast_kernel net/netlink/af_netlink.c:1302 [inline] [<00000000bdcf8286>] netlink_unicast+0x223/0x310 net/netlink/af_netlink.c:1328 [<00000000fc5b92d9>] netlink_sendmsg+0x2c0/0x570 net/netlink/af_netlink.c:1917 [<00000000da84d076>] sock_sendmsg_nosec net/socket.c:639 [inline] [<00000000da84d076>] sock_sendmsg+0x54/0x70 net/socket.c:659 [<0000000042fb2eee>] ____sys_sendmsg+0x2d0/0x300 net/socket.c:2330 [<000000008f23f67e>] ___sys_sendmsg+0x8a/0xd0 net/socket.c:2384 [<00000000d838e4f6>] __sys_sendmsg+0x80/0xf0 net/socket.c:2417 [<00000000289a9cb1>] __do_sys_sendmsg net/socket.c:2426 [inline] [<00000000289a9cb1>] __se_sys_sendmsg net/socket.c:2424 [inline] [<00000000289a9cb1>] __x64_sys_sendmsg+0x23/0x30 net/socket.c:2424 Fixes: 24ec483c ("net: sched: Introduce act_ctinfo action") Signed-off-by:Kevin 'ldir' Darbyshire-Bryant <ldir@darbyshire-bryant.me.uk> Signed-off-by:
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Olof Johansson authored
The existing __lshrti3 was really inefficient, and the other two helpers are also needed to compile some modules. Add the missing versions, and export all of the symbols like arm64 already does. This code is based on the assembly generated by libgcc builds. This fixes a build break triggered by ubsan: riscv64-unknown-linux-gnu-ld: lib/ubsan.o: in function `.L2': ubsan.c:(.text.unlikely+0x38): undefined reference to `__ashlti3' riscv64-unknown-linux-gnu-ld: ubsan.c:(.text.unlikely+0x42): undefined reference to `__ashrti3' Signed-off-by:
Olof Johansson <olof@lixom.net> [paul.walmsley@sifive.com: use SYM_FUNC_{START,END} instead of ENTRY/ENDPROC; note libgcc origin] Signed-off-by:
Paul Walmsley <paul.walmsley@sifive.com>
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git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linuxLinus Torvalds authored
Pull MTD fixes from Miquel Raynal: "Raw NAND: - GPMI: Fix the suspend/resume SPI-NOR: - Fix quad enable on Spansion like flashes - Fix selection of 4-byte addressing opcodes on Spansion" * tag 'mtd/fixes-for-5.5-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/mtd/linux: mtd: rawnand: gpmi: Restore nfc timing setup after suspend/resume mtd: rawnand: gpmi: Fix suspend/resume problem mtd: spi-nor: Fix quad enable for Spansion like flashes mtd: spi-nor: Fix selection of 4-byte addressing opcodes on Spansion
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- 18 Jan, 2020 10 commits
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git://anongit.freedesktop.org/drm/drmLinus Torvalds authored
Pull drm fixes from Dave Airlie: "Back from LCA2020, fixes wasn't too busy last week, seems to have quieten down appropriately, some amdgpu, i915, then a core mst fix and one fix for virtio-gpu and one for rockchip: core mst: - serialize down messages and clear timeslots are on unplug amdgpu: - Update golden settings for renoir - eDP fix i915: - uAPI fix: Remove dash and colon from PMU names to comply with tools/perf - Fix for include file that was indirectly included - Two fixes to make sure VMA are marked active for error capture virtio: - maintain obj reservation lock when submitting cmds rockchip: - increase link rate var size to accommodate rates" * tag 'drm-fixes-2020-01-19' of git://anongit.freedesktop.org/drm/drm: drm/amd/display: Reorder detect_edp_sink_caps before link settings read. drm/amdgpu: update goldensetting for renoir drm/dp_mst: Have DP_Tx send one msg at a time drm/dp_mst: clear time slots for ports invalid drm/i915/pmu: Do not use colons or dashes in PMU names drm/rockchip: fix integer type used for storing dp data rate drm/i915/gt: Mark ring->vma as active while pinned drm/i915/gt: Mark context->state vma as active while pinned drm/i915/gt: Skip trying to unbind in restore_ggtt_mappings drm/i915: Add missing include file <linux/math64.h> drm/virtio: add missing virtio_gpu_array_lock_resv call -
Ilie Halip authored
Temporary files used in the VDSO build process linger on even after make mrproper: vdso-dummy.o.tmp, vdso.so.dbg.tmp. Delete them once they're no longer needed. Signed-off-by:
Ilie Halip <ilie.halip@gmail.com> Signed-off-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 fixes from Ingo Molnar: "Misc fixes: - a resctrl fix for uninitialized objects found by debugobjects - a resctrl memory leak fix - fix the unintended re-enabling of the of SME and SEV CPU flags if memory encryption was disabled at bootup via the MSR space" * 'x86-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/CPU/AMD: Ensure clearing of SME/SEV features is maintained x86/resctrl: Fix potential memory leak x86/resctrl: Fix an imbalance in domain_remove_cpu() -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull timer fixes from Ingo Molnar: "Three fixes: fix link failure on Alpha, fix a Sparse warning and annotate/robustify a lockless access in the NOHZ code" * 'timers-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: tick/sched: Annotate lockless access to last_jiffies_update lib/vdso: Make __cvdso_clock_getres() static time/posix-stubs: Provide compat itimer supoprt for alpha
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull cpu/SMT fix from Ingo Molnar: "Fix a build bug on CONFIG_HOTPLUG_SMT=y && !CONFIG_SYSFS kernels" * 'smp-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: cpu/SMT: Fix x86 link error without CONFIG_SYSFS
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull x86 RAS fix from Ingo Molnar: "Fix a thermal throttling race that can result in easy to trigger boot crashes on certain Ice Lake platforms" * 'ras-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/mce/therm_throt: Do not access uninitialized therm_work
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull perf fixes from Ingo Molnar: "Tooling fixes, three Intel uncore driver fixes, plus an AUX events fix uncovered by the perf fuzzer" * 'perf-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: perf/x86/intel/uncore: Remove PCIe3 unit for SNR perf/x86/intel/uncore: Fix missing marker for snr_uncore_imc_freerunning_events perf/x86/intel/uncore: Add PCI ID of IMC for Xeon E3 V5 Family perf: Correctly handle failed perf_get_aux_event() perf hists: Fix variable name's inconsistency in hists__for_each() macro perf map: Set kmap->kmaps backpointer for main kernel map chunks perf report: Fix incorrectly added dimensions as switch perf data file tools lib traceevent: Fix memory leakage in filter_event
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull locking fixes from Ingo Molnar: "Three fixes: - Fix an rwsem spin-on-owner crash, introduced in v5.4 - Fix a lockdep bug when running out of stack_trace entries, introduced in v5.4 - Docbook fix" * 'locking-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: locking/rwsem: Fix kernel crash when spinning on RWSEM_OWNER_UNKNOWN futex: Fix kernel-doc notation warning locking/lockdep: Fix buffer overrun problem in stack_trace[] -
git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull irq fix from Ingo Molnar: "Fix a recent regression in the Ingenic SoCs irqchip driver that floods the syslog" * 'irq-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: irqchip/ingenic: Get rid of the legacy IRQ domain
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tipLinus Torvalds authored
Pull EFI fixes from Ingo Molnar: "Three EFI fixes: - Fix a slow-boot-scrolling regression but making sure we use WC for EFI earlycon framebuffer mappings on x86 - Fix a mixed EFI mode boot crash - Disable paging explicitly before entering startup_32() in mixed mode bootup" * 'efi-urgent-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: x86/efistub: Disable paging at mixed mode entry efi/libstub/random: Initialize pointer variables to zero for mixed mode efi/earlycon: Fix write-combine mapping on x86
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