- 01 Apr, 2019 25 commits
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Cong Wang authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 2fdeee25 ] The current opt_inst_list operations inside team_nl_cmd_options_set() is too complex to track: LIST_HEAD(opt_inst_list); nla_for_each_nested(...) { list_for_each_entry(opt_inst, &team->option_inst_list, list) { if (__team_option_inst_tmp_find(&opt_inst_list, opt_inst)) continue; list_add(&opt_inst->tmp_list, &opt_inst_list); } } team_nl_send_event_options_get(team, &opt_inst_list); as while we retrieve 'opt_inst' from team->option_inst_list, it could be added to the local 'opt_inst_list' for multiple times. The __team_option_inst_tmp_find() doesn't work, as the setter team_mode_option_set() still calls team->ops.exit() which uses ->tmp_list too in __team_options_change_check(). Simplify the list operations by moving the 'opt_inst_list' and team_nl_send_event_options_get() into the nla_for_each_nested() loop so that it can be guranteed that we won't insert a same list entry for multiple times. Therefore, __team_option_inst_tmp_find() can be removed too. Fixes: 4fb0534f ("team: avoid adding twice the same option to the event list") Fixes: 2fcdb2c9 ("team: allow to send multiple set events in one message") Reported-by: syzbot+4d4af685432dc0e56c91@syzkaller.appspotmail.com Reported-by: syzbot+68ee510075cf64260cc4@syzkaller.appspotmail.com Cc: Jiri Pirko <jiri@resnulli.us> Cc: Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Cong Wang <xiyou.wangcong@gmail.com> Acked-by:
Jiri Pirko <jiri@mellanox.com> Reviewed-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org> Signed-off-by:
Stefan Bader <stefan.bader@canonical.com> Acked-by:
Juerg Haefliger <juerg.haefliger@canonical.com> Signed-off-by:
Kleber Sacilotto de Souza <kleber.souza@canonical.com>
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Kal Conley authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit fc62814d ] When calculating rb->frames_per_block * req->tp_block_nr the result can overflow. Check it for overflow without limiting the total buffer size to UINT_MAX. This change fixes support for packet ring buffers >= UINT_MAX. Fixes: 8f8d28e4 ("net/packet: fix overflow in check for tp_frame_nr") Signed-off-by:
Kal Conley <kal.conley@dectris.com> Signed-off-by:
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Eric Dumazet authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 4ffcbfac ] KMSAN reported batadv_interface_tx() was possibly using a garbage value [1] batadv_get_vid() does have a pskb_may_pull() call but batadv_interface_tx() does not actually make sure this did not fail. [1] BUG: KMSAN: uninit-value in batadv_interface_tx+0x908/0x1e40 net/batman-adv/soft-interface.c:231 CPU: 0 PID: 10006 Comm: syz-executor469 Not tainted 4.20.0-rc7+ #5 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+0x173/0x1d0 lib/dump_stack.c:113 kmsan_report+0x12e/0x2a0 mm/kmsan/kmsan.c:613 __msan_warning+0x82/0xf0 mm/kmsan/kmsan_instr.c:313 batadv_interface_tx+0x908/0x1e40 net/batman-adv/soft-interface.c:231 __netdev_start_xmit include/linux/netdevice.h:4356 [inline] netdev_start_xmit include/linux/netdevice.h:4365 [inline] xmit_one net/core/dev.c:3257 [inline] dev_hard_start_xmit+0x607/0xc40 net/core/dev.c:3273 __dev_queue_xmit+0x2e42/0x3bc0 net/core/dev.c:3843 dev_queue_xmit+0x4b/0x60 net/core/dev.c:3876 packet_snd net/packet/af_packet.c:2928 [inline] packet_sendmsg+0x8306/0x8f30 net/packet/af_packet.c:2953 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] __sys_sendto+0x8c4/0xac0 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1796 __x64_sys_sendto+0x6e/0x90 net/socket.c:1796 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 RIP: 0033:0x441889 Code: 18 89 d0 c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 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 bb 10 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007ffdda6fd468 EFLAGS: 00000216 ORIG_RAX: 000000000000002c RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 0000000000441889 RDX: 000000000000000e RSI: 00000000200000c0 RDI: 0000000000000003 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000216 R12: 00007ffdda6fd4c0 R13: 00007ffdda6fd4b0 R14: 0000000000000000 R15: 0000000000000000 Uninit was created at: kmsan_save_stack_with_flags mm/kmsan/kmsan.c:204 [inline] kmsan_internal_poison_shadow+0x92/0x150 mm/kmsan/kmsan.c:158 kmsan_kmalloc+0xa6/0x130 mm/kmsan/kmsan_hooks.c:176 kmsan_slab_alloc+0xe/0x10 mm/kmsan/kmsan_hooks.c:185 slab_post_alloc_hook mm/slab.h:446 [inline] slab_alloc_node mm/slub.c:2759 [inline] __kmalloc_node_track_caller+0xe18/0x1030 mm/slub.c:4383 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0x309/0xa20 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:998 [inline] alloc_skb_with_frags+0x1c7/0xac0 net/core/skbuff.c:5220 sock_alloc_send_pskb+0xafd/0x10e0 net/core/sock.c:2083 packet_alloc_skb net/packet/af_packet.c:2781 [inline] packet_snd net/packet/af_packet.c:2872 [inline] packet_sendmsg+0x661a/0x8f30 net/packet/af_packet.c:2953 sock_sendmsg_nosec net/socket.c:621 [inline] sock_sendmsg net/socket.c:631 [inline] __sys_sendto+0x8c4/0xac0 net/socket.c:1788 __do_sys_sendto net/socket.c:1800 [inline] __se_sys_sendto+0x107/0x130 net/socket.c:1796 __x64_sys_sendto+0x6e/0x90 net/socket.c:1796 do_syscall_64+0xbc/0xf0 arch/x86/entry/common.c:291 entry_SYSCALL_64_after_hwframe+0x63/0xe7 Fixes: c6c8fea2 ("net: Add batman-adv meshing protocol") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Cc: Marek Lindner <mareklindner@neomailbox.ch> Cc: Simon Wunderlich <sw@simonwunderlich.de> Cc: Antonio Quartulli <a@unstable.cc> Signed-off-by:
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Eric Biggers authored
BugLink: https://bugs.launchpad.net/bugs/1822271 commit ede0fa98 upstream. syzbot hit the 'BUG_ON(index_key->desc_len == 0);' in __key_link_begin() called from construct_alloc_key() during sys_request_key(), because the length of the key description was never calculated. The problem is that we rely on ->desc_len being initialized by search_process_keyrings(), specifically by search_nested_keyrings(). But, if the process isn't subscribed to any keyrings that never happens. Fix it by always initializing keyring_index_key::desc_len as soon as the description is set, like we already do in some places. The following program reproduces the BUG_ON() when it's run as root and no session keyring has been installed. If it doesn't work, try removing pam_keyinit.so from /etc/pam.d/login and rebooting. #include <stdlib.h> #include <unistd.h> #include <keyutils.h> int main(void) { int id = add_key("keyring", "syz", NULL, 0, KEY_SPEC_USER_KEYRING); keyctl_setperm(id, KEY_OTH_WRITE); setreuid(5000, 5000); request_key("user", "desc", "", id); } Reported-by: syzbot+ec24e95ea483de0a24da@syzkaller.appspotmail.com Fixes: b2a4df20 ("KEYS: Expand the capacity of a keyring") Signed-off-by:
Eric Biggers <ebiggers@google.com> Signed-off-by:
David Howells <dhowells@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
James Morris <james.morris@microsoft.com> Signed-off-by:
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Eric Biggers authored
BugLink: https://bugs.launchpad.net/bugs/1822271 commit cc1780fc upstream. Align the payload of "user" and "logon" keys so that users of the keyrings service can access it as a struct that requires more than 2-byte alignment. fscrypt currently does this which results in the read of fscrypt_key::size being misaligned as it needs 4-byte alignment. Align to __alignof__(u64) rather than __alignof__(long) since in the future it's conceivable that people would use structs beginning with u64, which on some platforms would require more than 'long' alignment. Reported-by:
Aaro Koskinen <aaro.koskinen@iki.fi> Fixes: 2aa349f6 ("[PATCH] Keys: Export user-defined keyring operations") Fixes: 88bd6ccd ("ext4 crypto: add encryption key management facilities") Cc: stable@vger.kernel.org Signed-off-by:
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Bart Van Assche authored
BugLink: https://bugs.launchpad.net/bugs/1822271 commit 48396e80 upstream. Since .scsi_done() must only be called after scsi_queue_rq() has finished, make sure that the SRP initiator driver does not call .scsi_done() while scsi_queue_rq() is in progress. Although invoking sg_reset -d while I/O is in progress works fine with kernel v4.20 and before, that is not the case with kernel v5.0-rc1. This patch avoids that the following crash is triggered with kernel v5.0-rc1: BUG: unable to handle kernel NULL pointer dereference at 0000000000000138 CPU: 0 PID: 360 Comm: kworker/0:1H Tainted: G B 5.0.0-rc1-dbg+ #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.10.2-1 04/01/2014 Workqueue: kblockd blk_mq_run_work_fn RIP: 0010:blk_mq_dispatch_rq_list+0x116/0xb10 Call Trace: blk_mq_sched_dispatch_requests+0x2f7/0x300 __blk_mq_run_hw_queue+0xd6/0x180 blk_mq_run_work_fn+0x27/0x30 process_one_work+0x4f1/0xa20 worker_thread+0x67/0x5b0 kthread+0x1cf/0x1f0 ret_from_fork+0x24/0x30 Cc: <stable@vger.kernel.org> Fixes: 94a9174c ("IB/srp: reduce lock coverage of command completion") Signed-off-by:
Bart Van Assche <bvanassche@acm.org> Signed-off-by:
Jason Gunthorpe <jgg@mellanox.com> Signed-off-by:
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Nathan Chancellor authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 7afa81c5 ] A recent commit in Clang expanded the -Wstring-plus-int warning, showing some odd behavior in this file. drivers/isdn/hardware/avm/b1.c:426:30: warning: adding 'int' to a string does not append to the string [-Wstring-plus-int] cinfo->version[j] = "\0\0" + 1; ~~~~~~~^~~ drivers/isdn/hardware/avm/b1.c:426:30: note: use array indexing to silence this warning cinfo->version[j] = "\0\0" + 1; ^ & [ ] 1 warning generated. This is equivalent to just "\0". Nick pointed out that it is smarter to use "" instead of "\0" because "" is used elsewhere in the kernel and can be deduplicated at the linking stage. Link: https://github.com/ClangBuiltLinux/linux/issues/309Suggested-by:
Nick Desaulniers <ndesaulniers@google.com> Signed-off-by:
Nathan Chancellor <natechancellor@gmail.com> Signed-off-by:
Sasha Levin <sashal@kernel.org> Signed-off-by:
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Kangjie Lu authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 248b5701 ] When lp55xx_read() fails, "status" is an uninitialized variable and thus may contain random value; using it leads to undefined behaviors. The fix inserts a check for the return value of lp55xx_read: if it fails, returns with its error code. Signed-off-by:
Kangjie Lu <kjlu@umn.edu> Signed-off-by:
Jacek Anaszewski <jacek.anaszewski@gmail.com> Signed-off-by:
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Colin Ian King authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit cb12d72b ] Shifting the 1 by exp by an int can lead to sign-extension overlow when exp is 31 since 1 is an signed int and sign-extending this result to an unsigned long long will set the upper 32 bits. Fix this by shifting an unsigned long. Detected by cppcheck: (warning) Shifting signed 32-bit value by 31 bits is undefined behaviour Signed-off-by:
Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Jia-Ju Bai authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 2ff33d66 ] The functions isdn_tty_tiocmset() and isdn_tty_set_termios() may be concurrently executed. isdn_tty_tiocmset isdn_tty_modem_hup line 719: kfree(info->dtmf_state); line 721: kfree(info->silence_state); line 723: kfree(info->adpcms); line 725: kfree(info->adpcmr); isdn_tty_set_termios isdn_tty_modem_hup line 719: kfree(info->dtmf_state); line 721: kfree(info->silence_state); line 723: kfree(info->adpcms); line 725: kfree(info->adpcmr); Thus, some concurrency double-free bugs may occur. These possible bugs are found by a static tool written by myself and my manual code review. To fix these possible bugs, the mutex lock "modem_info_mutex" used in isdn_tty_tiocmset() is added in isdn_tty_set_termios(). Signed-off-by:
Jia-Ju Bai <baijiaju1990@gmail.com> Signed-off-by:
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Thomas Bogendoerfer authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 41af167f ] 64bit JAZZ builds failed with linux-next/arch/mips/jazz/jazzdma.c: In function `vdma_init`: /linux-next/arch/mips/jazz/jazzdma.c:77:30: error: implicit declaration of function `KSEG1ADDR`; did you mean `CKSEG1ADDR`? [-Werror=implicit-function-declaration] pgtbl = (VDMA_PGTBL_ENTRY *)KSEG1ADDR(pgtbl); ^~~~~~~~~ CKSEG1ADDR /linux-next/arch/mips/jazz/jazzdma.c:77:10: error: cast to pointer from integer of different size [-Werror=int-to-pointer-cast] pgtbl = (VDMA_PGTBL_ENTRY *)KSEG1ADDR(pgtbl); ^ In file included from /linux-next/arch/mips/include/asm/barrier.h:11:0, from /linux-next/include/linux/compiler.h:248, from /linux-next/include/linux/kernel.h:10, from /linux-next/arch/mips/jazz/jazzdma.c:11: /linux-next/arch/mips/include/asm/addrspace.h:41:29: error: cast from pointer to integer of different size [-Werror=pointer-to-int-cast] #define _ACAST32_ (_ATYPE_)(_ATYPE32_) /* widen if necessary */ ^ /linux-next/arch/mips/include/asm/addrspace.h:53:25: note: in expansion of macro `_ACAST32_` #define CPHYSADDR(a) ((_ACAST32_(a)) & 0x1fffffff) ^~~~~~~~~ /linux-next/arch/mips/jazz/jazzdma.c:84:44: note: in expansion of macro `CPHYSADDR` r4030_write_reg32(JAZZ_R4030_TRSTBL_BASE, CPHYSADDR(pgtbl)); Using correct casts and CKSEG1ADDR when dealing with the pgtbl setup fixes this. Signed-off-by:
Thomas Bogendoerfer <tbogendoerfer@suse.de> Signed-off-by:
Paul Burton <paul.burton@mips.com> Cc: Ralf Baechle <ralf@linux-mips.org> Cc: James Hogan <jhogan@kernel.org> Cc: linux-mips@vger.kernel.org Cc: linux-kernel@vger.kernel.org Signed-off-by:
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Logan Gunthorpe authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit cc29a1b0 ] scsi_mq_setup_tags(), which is called by scsi_add_host(), calculates the command size to allocate based on the prot_capabilities. In the isci driver, scsi_host_set_prot() is called after scsi_add_host() so the command size gets calculated to be smaller than it needs to be. Eventually, scsi_mq_init_request() locates the 'prot_sdb' after the command assuming it was sized correctly and a buffer overrun may occur. However, seeing blk_mq_alloc_rqs() rounds up to the nearest cache line size, the mistake can go unnoticed. The bug was noticed after the struct request size was reduced by commit 9d037ad7 ("block: remove req->timeout_list") Which likely reduced the allocated space for the request by an entire cache line, enough that the overflow could be hit and it caused a panic, on boot, at: RIP: 0010:t10_pi_complete+0x77/0x1c0 Call Trace: <IRQ> sd_done+0xf5/0x340 scsi_finish_command+0xc3/0x120 blk_done_softirq+0x83/0xb0 __do_softirq+0xa1/0x2e6 irq_exit+0xbc/0xd0 call_function_single_interrupt+0xf/0x20 </IRQ> sd_done() would call scsi_prot_sg_count() which reads the number of entities in 'prot_sdb', but seeing 'prot_sdb' is located after the end of the allocated space it reads a garbage number and erroneously calls t10_pi_complete(). To prevent this, the calls to scsi_host_set_prot() are moved into isci_host_alloc() before the call to scsi_add_host(). Out of caution, also move the similar call to scsi_host_set_guard(). Fixes: 3d2d7525 ("[SCSI] isci: T10 DIF support") Link: http://lkml.kernel.org/r/da851333-eadd-163a-8c78-e1f4ec5ec857@deltatee.comSigned-off-by:
Logan Gunthorpe <logang@deltatee.com> Cc: Intel SCU Linux support <intel-linux-scu@intel.com> Cc: Artur Paszkiewicz <artur.paszkiewicz@intel.com> Cc: "James E.J. Bottomley" <jejb@linux.ibm.com> Cc: "Martin K. Petersen" <martin.petersen@oracle.com> Cc: Christoph Hellwig <hch@lst.de> Cc: Jens Axboe <axboe@kernel.dk> Cc: Jeff Moyer <jmoyer@redhat.com> Reviewed-by:
Jeff Moyer <jmoyer@redhat.com> Reviewed-by:
Jens Axboe <axboe@kernel.dk> Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
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YueHaibing authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 72b4a046 ] The return code should be check while qla4xxx_copy_from_fwddb_param fails. Signed-off-by:
YueHaibing <yuehaibing@huawei.com> Acked-by:
Manish Rangankar <mrangankar@marvell.com> Signed-off-by:
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Alban Bedel authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 565dc8a4 ] CONFIG_SERIAL_OF_PLATFORM is needed to get a working console on the OF boards, enable it in the default config to get a working setup out of the box. Signed-off-by:
Alban Bedel <albeu@free.fr> Signed-off-by:
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Yonglong Liu authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit bb989501 ] When enable SLUB debug, than remove hns_enet_drv module, SLUB debug will identify a use after free bug: [134.189505] Unable to handle kernel paging request at virtual address 006b6b6b6b6b6b6b [134.197553] Mem abort info: [134.200381] ESR = 0x96000004 [134.203487] Exception class = DABT (current EL), IL = 32 bits [134.209497] SET = 0, FnV = 0 [134.212596] EA = 0, S1PTW = 0 [134.215777] Data abort info: [134.218701] ISV = 0, ISS = 0x00000004 [134.222596] CM = 0, WnR = 0 [134.225606] [006b6b6b6b6b6b6b] address between user and kernel address ranges [134.232851] Internal error: Oops: 96000004 [#1] SMP [134.237798] CPU: 21 PID: 27834 Comm: rmmod Kdump: loaded Tainted: G OE 4.19.5-1.2.34.aarch64 #1 [134.247856] Hardware name: Huawei TaiShan 2280 /BC11SPCD, BIOS 1.58 10/24/2018 [134.255181] pstate: 20000005 (nzCv daif -PAN -UAO) [134.260044] pc : hns_ae_put_handle+0x38/0x60 [134.264372] lr : hns_ae_put_handle+0x24/0x60 [134.268700] sp : ffff00001be93c50 [134.272054] x29: ffff00001be93c50 x28: ffff802faaec8040 [134.277442] x27: 0000000000000000 x26: 0000000000000000 [134.282830] x25: 0000000056000000 x24: 0000000000000015 [134.288284] x23: ffff0000096fe098 x22: ffff000001050070 [134.293671] x21: ffff801fb3c044a0 x20: ffff80afb75ec098 [134.303287] x19: ffff80afb75ec098 x18: 0000000000000000 [134.312945] x17: 0000000000000000 x16: 0000000000000000 [134.322517] x15: 0000000000000002 x14: 0000000000000000 [134.332030] x13: dead000000000100 x12: ffff7e02bea3c988 [134.341487] x11: ffff80affbee9e68 x10: 0000000000000000 [134.351033] x9 : 6fffff8000008101 x8 : 0000000000000000 [134.360569] x7 : dead000000000100 x6 : ffff000009579748 [134.370059] x5 : 0000000000210d00 x4 : 0000000000000000 [134.379550] x3 : 0000000000000001 x2 : 0000000000000000 [134.388813] x1 : 6b6b6b6b6b6b6b6b x0 : 0000000000000000 [134.397993] Process rmmod (pid: 27834, stack limit = 0x00000000d474b7fd) [134.408498] Call trace: [134.414611] hns_ae_put_handle+0x38/0x60 [134.422208] hnae_put_handle+0xd4/0x108 [134.429563] hns_nic_dev_remove+0x60/0xc0 [hns_enet_drv] [134.438342] platform_drv_remove+0x2c/0x70 [134.445958] device_release_driver_internal+0x174/0x208 [134.454810] driver_detach+0x70/0xd8 [134.461913] bus_remove_driver+0x64/0xe8 [134.469396] driver_unregister+0x34/0x60 [134.476822] platform_driver_unregister+0x20/0x30 [134.485130] hns_nic_dev_driver_exit+0x14/0x6e4 [hns_enet_drv] [134.494634] __arm64_sys_delete_module+0x238/0x290 struct hnae_handle is a member of struct hnae_vf_cb, so when vf_cb is freed, than use hnae_handle will cause use after free panic. This patch frees vf_cb after hnae_handle used. Signed-off-by:
Yonglong Liu <liuyonglong@huawei.com> Signed-off-by:
Huazhong Tan <tanhuazhong@huawei.com> Signed-off-by:
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Kangjie Lu authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 9e28989d ] When mc13xxx_reg_read() fails, "old_adc0" is uninitialized and will contain random value. Further execution uses "old_adc0" even when mc13xxx_reg_read() fails. The fix checks the return value of mc13xxx_reg_read(), and exits the execution when it fails. Signed-off-by:
Lee Jones <lee.jones@linaro.org> Signed-off-by:
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Charles Keepax authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 04c801c1 ] Signed-off-by:
Charles Keepax <ckeepax@opensource.cirrus.com> Signed-off-by:
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Jonathan Marek authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 504e4175 ] This is required as part of the initialization sequence on certain SoCs. If these registers are not initialized, the hardware can be unresponsive. This fixes the driver on apq8060 (HP TouchPad device). Signed-off-by:
Jonathan Marek <jonathan@marek.ca> Signed-off-by:
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Dan Carpenter authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 10628e3e ] This function is supposed to return zero on success or negative error codes on error. Unfortunately, there is a bug so it sometimes returns non-zero, positive numbers on success. I noticed this bug during review and I can't test it. It does appear that the return is sometimes propogated back to _regmap_read() where all non-zero returns are treated as failure so this may affect run time. Fixes: 47c16975 ("mfd: Align ab8500 with the abx500 interface") Signed-off-by:
Dan Carpenter <dan.carpenter@oracle.com> Reviewed-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Nathan Chancellor authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit a3888f62 ] When building the kernel with Clang, the following section mismatch warnings appear: WARNING: vmlinux.o(.text+0x7239cc): Section mismatch in reference from the function db8500_prcmu_probe() to the function .init.text:init_prcm_registers() The function db8500_prcmu_probe() references the function __init init_prcm_registers(). This is often because db8500_prcmu_probe lacks a __init annotation or the annotation of init_prcm_registers is wrong. WARNING: vmlinux.o(.text+0x723e28): Section mismatch in reference from the function db8500_prcmu_probe() to the function .init.text:fw_project_name() The function db8500_prcmu_probe() references the function __init fw_project_name(). This is often because db8500_prcmu_probe lacks a __init annotation or the annotation of fw_project_name is wrong. db8500_prcmu_probe should not be marked as __init so remove the __init annotation from fw_project_name and init_prcm_registers. Signed-off-by:
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Nathan Chancellor authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit 88385550 ] When building the kernel with Clang, the following section mismatch warning appears: WARNING: vmlinux.o(.text+0x3d84a3b): Section mismatch in reference from the function twl_probe() to the function .init.text:unprotect_pm_master() The function twl_probe() references the function __init unprotect_pm_master(). This is often because twl_probe lacks a __init annotation or the annotation of unprotect_pm_master is wrong. Remove the __init annotation on the *protect_pm_master functions so there is no more mismatch. Signed-off-by:
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Vignesh R authored
BugLink: https://bugs.launchpad.net/bugs/1822271 [ Upstream commit b40ee006 ] Use PLATFORM_DEVID_AUTO to number mfd cells while registering, so that different instances are uniquely identified. This is required in order to support registering of multiple instances of same ti_am335x_tscadc IP. Signed-off-by:
Vignesh R <vigneshr@ti.com> Signed-off-by:
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Eric Biggers authored
BugLink: https://bugs.launchpad.net/bugs/1822271 commit a08bf91c upstream. If the sysctl 'kernel.keys.maxkeys' is set to some number n, then actually users can only add up to 'n - 1' keys. Likewise for 'kernel.keys.maxbytes' and the root_* versions of these sysctls. But these sysctls are apparently supposed to be *maximums*, as per their names and all documentation I could find -- the keyrings(7) man page, Documentation/security/keys/core.rst, and all the mentions of EDQUOT meaning that the key quota was *exceeded* (as opposed to reached). Thus, fix the code to allow reaching the quotas exactly. Fixes: 0b77f5bf ("keys: make the keyring quotas controllable through /proc/sys") Cc: stable@vger.kernel.org Signed-off-by:
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Ralph Campbell authored
BugLink: https://bugs.launchpad.net/bugs/1822271 commit 050c17f2 upstream. The system call, get_mempolicy() [1], passes an unsigned long *nodemask pointer and an unsigned long maxnode argument which specifies the length of the user's nodemask array in bits (which is rounded up). The manual page says that if the maxnode value is too small, get_mempolicy will return EINVAL but there is no system call to return this minimum value. To determine this value, some programs search /proc/<pid>/status for a line starting with "Mems_allowed:" and use the number of digits in the mask to determine the minimum value. A recent change to the way this line is formatted [2] causes these programs to compute a value less than MAX_NUMNODES so get_mempolicy() returns EINVAL. Change get_mempolicy(), the older compat version of get_mempolicy(), and the copy_nodes_to_user() function to use nr_node_ids instead of MAX_NUMNODES, thus preserving the defacto method of computing the minimum size for the nodemask array and the maxnode argument. [1] http://man7.org/linux/man-pages/man2/get_mempolicy.2.html [2] https://lore.kernel.org/lkml/1545405631-6808-1-git-send-email-longman@redhat.com Link: http://lkml.kernel.org/r/20190211180245.22295-1-rcampbell@nvidia.com Fixes: 4fb8e5b89bcbbbb ("include/linux/nodemask.h: use nr_node_ids (not MAX_NUMNODES) in __nodemask_pr_numnodes()") Signed-off-by:
Ralph Campbell <rcampbell@nvidia.com> Suggested-by:
Alexander Duyck <alexander.duyck@gmail.com> Cc: Waiman Long <longman@redhat.com> Cc: <stable@vger.kernel.org> Signed-off-by:
Andrew Morton <akpm@linux-foundation.org> Signed-off-by:
Linus Torvalds <torvalds@linux-foundation.org> Signed-off-by:
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Yan, Zheng authored
BugLink: https://bugs.launchpad.net/bugs/1822271 commit 04242ff3 upstream. Otherwise, mdsc->snap_flush_list may get corrupted. Cc: stable@vger.kernel.org Signed-off-by:
"Yan, Zheng" <zyan@redhat.com> Reviewed-by:
Ilya Dryomov <idryomov@gmail.com> Signed-off-by:
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- 31 Mar, 2019 3 commits
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Po-Hsu Lin authored
BugLink: https://bugs.launchpad.net/bugs/1819881 Enable the Hi-DPI 16x32 font support. Also enable the compiled-in font support. Signed-off-by:
Po-Hsu Lin <po-hsu.lin@canonical.com> Acked-by:
Khalid Elmously <khalid.elmously@canonical.com>
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Amanoel Dawod authored
BugLink: https://bugs.launchpad.net/bugs/1819881 This patch adds an option to compile-in a high resolution and large Terminus (ter16x32) bitmap console font for use with HiDPI and Retina screens. The font was convereted from standard Terminus ter-i32b.psf (size 16x32) with the help of psftools and minor hand editing deleting useless characters. This patch is non-intrusive, no options are enabled by default so most users won't notice a thing. I am placing my changes under the GPL 2.0 just as source Terminus font. Signed-off-by:
Amanoel Dawod <amanoeladawod@gmail.com> Signed-off-by:
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Randy Dunlap authored
BugLink: https://bugs.launchpad.net/bugs/1819881 Keep fonts together and indented (in menu) as much as possible. This moves the Sparc font choices to the end of the menu since they have different dependencies. Link: http://lkml.kernel.org/r/de6d8977-c6d6-a82d-c953-f2a2fefdb8a5@infradead.orgSigned-off-by:
Randy Dunlap <rdunlap@infradead.org> Cc: Geert Uytterhoeven <geert@linux-m68k.org> Signed-off-by:
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- 28 Mar, 2019 4 commits
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Prasad Sodagudi authored
BugLink: https://bugs.launchpad.net/bugs/1821259 When cpu_stop_queue_work() releases the lock for the stopper thread that was queued into its wake queue, preemption is enabled, which leads to the following deadlock: CPU0 CPU1 sched_setaffinity(0, ...) __set_cpus_allowed_ptr() stop_one_cpu(0, ...) stop_two_cpus(0, 1, ...) cpu_stop_queue_work(0, ...) cpu_stop_queue_two_works(0, ..., 1, ...) -grabs lock for migration/0- -spins with preemption disabled, waiting for migration/0's lock to be released- -adds work items for migration/0 and queues migration/0 to its wake_q- -releases lock for migration/0 and preemption is enabled- -current thread is preempted, and __set_cpus_allowed_ptr has changed the thread's cpu allowed mask to CPU1 only- -acquires migration/0 and migration/1's locks- -adds work for migration/0 but does not add migration/0 to wake_q, since it is already in a wake_q- -adds work for migration/1 and adds migration/1 to its wake_q- -releases migration/0 and migration/1's locks, wakes migration/1, and enables preemption- -since migration/1 is requested to run, migration/1 begins to run and waits on migration/0, but migration/0 will never be able to run, since the thread that can wake it is affine to CPU1- Disable preemption in cpu_stop_queue_work() before queueing works for stopper threads, and queueing the stopper thread in the wake queue, to ensure that the operation of queueing the works and waking the stopper threads is atomic. Fixes: 0b26351b ("stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock") Signed-off-by:
Prasad Sodagudi <psodagud@codeaurora.org> Signed-off-by:
Isaac J. Manjarres <isaacm@codeaurora.org> Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Cc: peterz@infradead.org Cc: matt@codeblueprint.co.uk Cc: bigeasy@linutronix.de Cc: gregkh@linuxfoundation.org Cc: stable@vger.kernel.org Link: https://lkml.kernel.org/r/1533329766-4856-1-git-send-email-isaacm@codeaurora.orgCo-Developed-by:
Mauricio Faria de Oliveira <mfo@canonical.com> Acked-by:
Marcelo Henrique Cerri <marcelo.cerri@canonical.com> Signed-off-by:
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Isaac J. Manjarres authored
BugLink: https://bugs.launchpad.net/bugs/1821259 This commit: 9fb8d5dc ("stop_machine, Disable preemption when waking two stopper threads") does not fully address the race condition that can occur as follows: On one CPU, call it CPU 3, thread 1 invokes cpu_stop_queue_two_works(2, 3,...), and the execution is such that thread 1 queues the works for migration/2 and migration/3, and is preempted after releasing the locks for migration/2 and migration/3, but before waking the threads. Then, On CPU 2, a kworker, call it thread 2, is running, and it invokes cpu_stop_queue_two_works(1, 2,...), such that thread 2 queues the works for migration/1 and migration/2. Meanwhile, on CPU 3, thread 1 resumes execution, and wakes migration/2 and migration/3. This means that when CPU 2 releases the locks for migration/1 and migration/2, but before it wakes those threads, it can be preempted by migration/2. If thread 2 is preempted by migration/2, then migration/2 will execute the first work item successfully, since migration/3 was woken up by CPU 3, but when it goes to execute the second work item, it disables preemption, calls multi_cpu_stop(), and thus, CPU 2 will wait forever for migration/1, which should have been woken up by thread 2. However migration/1 cannot be woken up by thread 2, since it is a kworker, so it is affine to CPU 2, but CPU 2 is running migration/2 with preemption disabled, so thread 2 will never run. Disable preemption after queueing works for stopper threads to ensure that the operation of queueing the works and waking the stopper threads is atomic. Co-Developed-by:
Pavankumar Kondeti <pkondeti@codeaurora.org> Signed-off-by:
Peter Zijlstra (Intel) <peterz@infradead.org> Cc: Linus Torvalds <torvalds@linux-foundation.org> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Thomas Gleixner <tglx@linutronix.de> Cc: bigeasy@linutronix.de Cc: gregkh@linuxfoundation.org Cc: matt@codeblueprint.co.uk Fixes: 9fb8d5dc ("stop_machine, Disable preemption when waking two stopper threads") Link: http://lkml.kernel.org/r/1531856129-9871-1-git-send-email-isaacm@codeaurora.orgSigned-off-by:
Ingo Molnar <mingo@kernel.org> (backported from commit 2610e889) [mfo: backport: refresh context lines] Signed-off-by:
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Isaac J. Manjarres authored
BugLink: https://bugs.launchpad.net/bugs/1821259 When cpu_stop_queue_two_works() begins to wake the stopper threads, it does so without preemption disabled, which leads to the following race condition: The source CPU calls cpu_stop_queue_two_works(), with cpu1 as the source CPU, and cpu2 as the destination CPU. When adding the stopper threads to the wake queue used in this function, the source CPU stopper thread is added first, and the destination CPU stopper thread is added last. When wake_up_q() is invoked to wake the stopper threads, the threads are woken up in the order that they are queued in, so the source CPU's stopper thread is woken up first, and it preempts the thread running on the source CPU. The stopper thread will then execute on the source CPU, disable preemption, and begin executing multi_cpu_stop(), and wait for an ack from the destination CPU's stopper thread, with preemption still disabled. Since the worker thread that woke up the stopper thread on the source CPU is affine to the source CPU, and preemption is disabled on the source CPU, that thread will never run to dequeue the destination CPU's stopper thread from the wake queue, and thus, the destination CPU's stopper thread will never run, causing the source CPU's stopper thread to wait forever, and stall. Disable preemption when waking the stopper threads in cpu_stop_queue_two_works(). Fixes: 0b26351b ("stop_machine, sched: Fix migrate_swap() vs. active_balance() deadlock") Co-Developed-by:
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Peter Zijlstra authored
BugLink: https://bugs.launchpad.net/bugs/1821259 Matt reported the following deadlock: CPU0 CPU1 schedule(.prev=migrate/0) <fault> pick_next_task() ... idle_balance() migrate_swap() active_balance() stop_two_cpus() spin_lock(stopper0->lock) spin_lock(stopper1->lock) ttwu(migrate/0) smp_cond_load_acquire() -- waits for schedule() stop_one_cpu(1) spin_lock(stopper1->lock) -- waits for stopper lock Fix this deadlock by taking the wakeups out from under stopper->lock. This allows the active_balance() to queue the stop work and finish the context switch, which in turn allows the wakeup from migrate_swap() to observe the context and complete the wakeup. Signed-off-by:
Matt Fleming <matt@codeblueprint.co.uk> Signed-off-by:
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- 26 Mar, 2019 4 commits
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Stefan Bader authored
Signed-off-by: -
Stefan Bader authored
BugLink: https://bugs.launchpad.net/bugs/1821724Signed-off-by:
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Stefan Bader authored
We must depend on linux-base with a minimum version specified after having pulled all the other packaging changes. BugLink: https://bugs.launchpad.net/bugs/1820419Signed-off-by:
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Stefan Bader authored
Ignore: yes Signed-off-by:
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- 14 Mar, 2019 4 commits
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Stefan Bader authored
Signed-off-by: -
Stefan Bader authored
BugLink: https://bugs.launchpad.net/bugs/1819660Signed-off-by:
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Stefan Bader authored
BugLink: http://bugs.launchpad.net/bugs/1786013Signed-off-by:
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Stefan Bader authored
BugLink: http://bugs.launchpad.net/bugs/1786013Signed-off-by:
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