- 01 Jul, 2020 20 commits
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Florian Westphal authored
commit 97cdcf37 upstream. This fills a hole in softnet data, so no change in structure size. Also prepares for xmit_more placement in the same spot; skb->xmit_more will be removed in followup patch. Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
David S. Miller <davem@davemloft.net> Signed-off-by:
Greg Kroah-Hartman <gregkh@linuxfoundation.org>
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Yang Yingliang authored
[ Upstream commit 814152a8 ] I got a memleak report when doing some fuzz test: unreferenced object 0xffff888112584000 (size 13599): comm "ip", pid 3048, jiffies 4294911734 (age 343.491s) hex dump (first 32 bytes): 74 61 70 30 00 00 00 00 00 00 00 00 00 00 00 00 tap0............ 00 ee d9 19 81 88 ff ff 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002f60ba65>] __kmalloc_node+0x309/0x3a0 [<0000000075b211ec>] kvmalloc_node+0x7f/0xc0 [<00000000d3a97396>] alloc_netdev_mqs+0x76/0xfc0 [<00000000609c3655>] __tun_chr_ioctl+0x1456/0x3d70 [<000000001127ca24>] ksys_ioctl+0xe5/0x130 [<00000000b7d5e66a>] __x64_sys_ioctl+0x6f/0xb0 [<00000000e1023498>] do_syscall_64+0x56/0xa0 [<000000009ec0eb12>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 unreferenced object 0xffff888111845cc0 (size 8): comm "ip", pid 3048, jiffies 4294911734 (age 343.491s) hex dump (first 8 bytes): 74 61 70 30 00 88 ff ff tap0.... backtrace: [<000000004c159777>] kstrdup+0x35/0x70 [<00000000d8b496ad>] kstrdup_const+0x3d/0x50 [<00000000494e884a>] kvasprintf_const+0xf1/0x180 [<0000000097880a2b>] kobject_set_name_vargs+0x56/0x140 [<000000008fbdfc7b>] dev_set_name+0xab/0xe0 [<000000005b99e3b4>] netdev_register_kobject+0xc0/0x390 [<00000000602704fe>] register_netdevice+0xb61/0x1250 [<000000002b7ca244>] __tun_chr_ioctl+0x1cd1/0x3d70 [<000000001127ca24>] ksys_ioctl+0xe5/0x130 [<00000000b7d5e66a>] __x64_sys_ioctl+0x6f/0xb0 [<00000000e1023498>] do_syscall_64+0x56/0xa0 [<000000009ec0eb12>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 unreferenced object 0xffff88811886d800 (size 512): comm "ip", pid 3048, jiffies 4294911734 (age 343.491s) hex dump (first 32 bytes): 00 00 00 00 ad 4e ad de ff ff ff ff 00 00 00 00 .....N.......... ff ff ff ff ff ff ff ff c0 66 3d a3 ff ff ff ff .........f=..... backtrace: [<0000000050315800>] device_add+0x61e/0x1950 [<0000000021008dfb>] netdev_register_kobject+0x17e/0x390 [<00000000602704fe>] register_netdevice+0xb61/0x1250 [<000000002b7ca244>] __tun_chr_ioctl+0x1cd1/0x3d70 [<000000001127ca24>] ksys_ioctl+0xe5/0x130 [<00000000b7d5e66a>] __x64_sys_ioctl+0x6f/0xb0 [<00000000e1023498>] do_syscall_64+0x56/0xa0 [<000000009ec0eb12>] entry_SYSCALL_64_after_hwframe+0x44/0xa9 If call_netdevice_notifiers() failed, then rollback_registered() calls netdev_unregister_kobject() which holds the kobject. The reference cannot be put because the netdev won't be add to todo list, so it will leads a memleak, we need put the reference to avoid memleak. Reported-by:
Hulk Robot <hulkci@huawei.com> Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com> Signed-off-by:
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Thomas Martitz authored
[ Upstream commit db7202dec92e6caa2706c21d6fc359af318bde2e ] The eth_addr member is passed to ether_addr functions that require 2-byte alignment, therefore the member must be properly aligned to avoid unaligned accesses. The problem is in place since the initial merge of multicast to unicast: commit 6db6f0ea bridge: multicast to unicast Fixes: 6db6f0ea ("bridge: multicast to unicast") Cc: Roopa Prabhu <roopa@cumulusnetworks.com> Cc: Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Cc: David S. Miller <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: Felix Fietkau <nbd@nbd.name> Cc: stable@vger.kernel.org Signed-off-by:
Thomas Martitz <t.martitz@avm.de> Acked-by:
Nikolay Aleksandrov <nikolay@cumulusnetworks.com> Signed-off-by:
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Wang Hai authored
[ Upstream commit ea2fce88 ] Commit a84d0164 ("mld: fix memory leak in mld_del_delrec()") fixed the memory leak of MLD, but missing the ipv6_mc_destroy_dev() path, in which mca_sources are leaked after ma_put(). Using ip6_mc_clear_src() to take care of the missing free. BUG: memory leak unreferenced object 0xffff8881113d3180 (size 64): comm "syz-executor071", pid 389, jiffies 4294887985 (age 17.943s) hex dump (first 32 bytes): 00 00 00 00 00 00 00 00 ff 02 00 00 00 00 00 00 ................ 00 00 00 00 00 00 00 01 00 00 00 00 00 00 00 00 ................ backtrace: [<000000002cbc483c>] kmalloc include/linux/slab.h:555 [inline] [<000000002cbc483c>] kzalloc include/linux/slab.h:669 [inline] [<000000002cbc483c>] ip6_mc_add1_src net/ipv6/mcast.c:2237 [inline] [<000000002cbc483c>] ip6_mc_add_src+0x7f5/0xbb0 net/ipv6/mcast.c:2357 [<0000000058b8b1ff>] ip6_mc_source+0xe0c/0x1530 net/ipv6/mcast.c:449 [<000000000bfc4fb5>] do_ipv6_setsockopt.isra.12+0x1b2c/0x3b30 net/ipv6/ipv6_sockglue.c:754 [<00000000e4e7a722>] ipv6_setsockopt+0xda/0x150 net/ipv6/ipv6_sockglue.c:950 [<0000000029260d9a>] rawv6_setsockopt+0x45/0x100 net/ipv6/raw.c:1081 [<000000005c1b46f9>] __sys_setsockopt+0x131/0x210 net/socket.c:2132 [<000000008491f7db>] __do_sys_setsockopt net/socket.c:2148 [inline] [<000000008491f7db>] __se_sys_setsockopt net/socket.c:2145 [inline] [<000000008491f7db>] __x64_sys_setsockopt+0xba/0x150 net/socket.c:2145 [<00000000c7bc11c5>] do_syscall_64+0xa1/0x530 arch/x86/entry/common.c:295 [<000000005fb7a3f3>] entry_SYSCALL_64_after_hwframe+0x49/0xb3 Fixes: 1666d49e ("mld: do not remove mld souce list info when set link down") Reported-by:
Wang Hai <wanghai38@huawei.com> Acked-by:
Hangbin Liu <liuhangbin@gmail.com> Signed-off-by:
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Thomas Falcon authored
[ Upstream commit 5948378b ] The max MTU limit defined for ibmveth is not accounting for virtual ethernet buffer overhead, which is twenty-two additional bytes set aside for the ethernet header and eight additional bytes of an opaque handle reserved for use by the hypervisor. Update the max MTU to reflect this overhead. Fixes: d894be57 ("ethernet: use net core MTU range checking in more drivers") Fixes: 110447f8 ("ethernet: fix min/max MTU typos") Signed-off-by:
Thomas Falcon <tlfalcon@linux.ibm.com> Signed-off-by:
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Jann Horn authored
[ Upstream commit ca3fde52 ] begin_current_label_crit_section() must run in sleepable context because when label_is_stale() is true, aa_replace_current_label() runs, which uses prepare_creds(), which can sleep. Until now, the ptraceme access check (which runs with tasklist_lock held) violated this rule. Fixes: b2d09ae4 ("apparmor: move ptrace checks to using labels") Reported-by:
Cyrill Gorcunov <gorcunov@gmail.com> Reported-by:
kernel test robot <rong.a.chen@intel.com> Signed-off-by:
Jann Horn <jannh@google.com> Signed-off-by:
John Johansen <john.johansen@canonical.com> Signed-off-by:
Sasha Levin <sashal@kernel.org>
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Kai-Heng Feng authored
[ Upstream commit 3e0650ab ] Though the system uses DMIC, headset mic still uses the HDA, let's use GPIO 0x1 to control the micmute LED. The micmute LED GPIO has a different polarity to the mute LED GPIO, we can use the newly added micmute_led_polarity to indicate that. Signed-off-by:
Kai-Heng Feng <kai.heng.feng@canonical.com> Link: https://lore.kernel.org/r/20200430083255.5093-2-kai.heng.feng@canonical.comSigned-off-by:
Takashi Iwai <tiwai@suse.de> Signed-off-by:
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Kai-Heng Feng authored
[ Upstream commit f5a88b0a ] The system in question uses ALC285, and it uses GPIO 0x04 to control its mute LED. The mic mute LED can be controlled by GPIO 0x01, however the system uses DMIC so we should use that to control mic mute LED. Signed-off-by:
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Sasha Levin authored
[ Upstream commit 8b33a134 ] A headset on the laptop like ASUS B9450FA does not work, until quirk ALC294_FIXUP_ASUS_HPE is applied. Signed-off-by:
Jian-Hong Pan <jian-hong@endlessm.com> Signed-off-by:
Kailang Yang <kailang@realtek.com> Cc: <stable@vger.kernel.org> Link: https://lore.kernel.org/r/20200225072920.109199-1-jian-hong@endlessm.comSigned-off-by:
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Al Viro authored
[ Upstream commit 9d964e1b ] lost npc in PTRACE_SETREGSET, breaking PTRACE_SETREGS as well Fixes: cf51e129 "sparc32: fix register window handling in genregs32_[gs]et()" Signed-off-by:
Al Viro <viro@zeniv.linux.org.uk> Signed-off-by:
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Sowjanya Komatineni authored
[ Upstream commit b67d4530 ] Tegra194 supports maximum 64K Bytes transfer per packet. Tegra186 and prior supports maximum 4K Bytes transfer per packet. This patch fixes this payload difference between Tegra194 and prior Tegra chipsets using separate i2c_adapter_quirks. Signed-off-by:
Sowjanya Komatineni <skomatineni@nvidia.com> Acked-by:
Thierry Reding <treding@nvidia.com> Signed-off-by:
Wolfram Sang <wsa@the-dreams.de> Signed-off-by:
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Thierry Reding authored
[ Upstream commit 0604ee4a ] Not all fields were properly documented. Add kerneldoc for the missing fields to prevent the build from flagging them. Reported-by:
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Thierry Reding authored
[ Upstream commit c990bbaf ] Some of the kerneldoc uses a strange spelling for abbreviations. Turn them into all-uppercase and clean up some whitespace issues while at it. Signed-off-by:
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Yazen Ghannam authored
[ Upstream commit 6e846239 ] Add the new Family 17h Model 30h PCI IDs to the AMD64 EDAC module. This also fixes a probe failure that appeared when some other PCI IDs for Family 17h Model 30h were added to the AMD NB code. Fixes: be3518a1 (x86/amd_nb: Add PCI device IDs for family 17h, model 30h) Signed-off-by:
Yazen Ghannam <yazen.ghannam@amd.com> Signed-off-by:
Borislav Petkov <bp@suse.de> Tested-by:
Kim Phillips <kim.phillips@amd.com> Cc: James Morse <james.morse@arm.com> Cc: Mauro Carvalho Chehab <mchehab@kernel.org> Cc: linux-edac <linux-edac@vger.kernel.org> Link: https://lkml.kernel.org/r/20190228153558.127292-1-Yazen.Ghannam@amd.comSigned-off-by:
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Valentin Longchamp authored
[ Upstream commit 1a3db27a ] Since the quiesce/activate rework, __netdev_watchdog_up() is directly called in the ucc_geth driver. Unfortunately, this function is not available for modules and thus ucc_geth cannot be built as a module anymore. Fix it by exporting __netdev_watchdog_up(). Since the commit introducing the regression was backported to stable branches, this one should ideally be as well. Fixes: 79dde73c ("net/ethernet/freescale: rework quiesce/activate for ucc_geth") Signed-off-by:
Valentin Longchamp <valentin@longchamp.me> Signed-off-by:
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Doug Berger authored
[ Upstream commit 24d476db ] Commit c5a54bbc ("net: bcmgenet: abort suspend on error") mistakenly introduced register accesses that should not occur in bcmgenet_wol_power_up_cfg(). Fixes: c5a54bbc ("net: bcmgenet: abort suspend on error") Signed-off-by:
Doug Berger <opendmb@gmail.com> Signed-off-by:
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Miquel Raynal authored
[ Upstream commit c2707577 ] In a previous fix, I changed the condition on which the timeout of an IRQ is reached from: if (!ret) into: if (ret && !pending) While having a non-zero return code is usual in the Linux kernel, here ret comes from a wait_for_completion_timeout() which returns 0 when the waiting period is too long. Hence, the revised condition should be: if (!ret && !pending) The faulty patch did not produce any error because of the !pending condition so this change is finally purely cosmetic and does not change the actual driver behavior. Fixes: cafb56dd ("mtd: rawnand: marvell: prevent timeouts on a loaded machine") Signed-off-by:
Miquel Raynal <miquel.raynal@bootlin.com> Reviewed-by:
Boris Brezillon <boris.brezillon@collabora.com> Link: https://lore.kernel.org/linux-mtd/20200424164501.26719-2-miquel.raynal@bootlin.comSigned-off-by:
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Amir Goldstein authored
commit 2f02fd3f upstream. The comments in fanotify_group_event_mask() say: "If the event is on dir/child and this mark doesn't care about events on dir/child, don't send it!" Specifically, mount and filesystem marks do not care about events on child, but they can still specify an ignore mask for those events. For example, a group that has: - A mount mark with mask 0 and ignore_mask FAN_OPEN - An inode mark on a directory with mask FAN_OPEN | FAN_OPEN_EXEC with flag FAN_EVENT_ON_CHILD A child file open for exec would be reported to group with the FAN_OPEN event despite the fact that FAN_OPEN is in ignore mask of mount mark, because the mark iteration loop skips over non-inode marks for events on child when calculating the ignore mask. Move ignore mask calculation to the top of the iteration loop block before excluding marks for events on dir/child. Link: https://lore.kernel.org/r/20200524072441.18258-1-amir73il@gmail.comReported-by:
Jan Kara <jack@suse.cz> Link: https://lore.kernel.org/linux-fsdevel/20200521162443.GA26052@quack2.suse.cz/ Fixes: 55bf882c "fanotify: fix merging marks masks with FAN_ONDIR" Fixes: b469e7e4 "fanotify: fix handling of events on child..." Signed-off-by:
Amir Goldstein <amir73il@gmail.com> Signed-off-by:
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yu kuai authored
commit a75ca930 upstream. commit e7bf90e5 ("block/bio-integrity: fix a memory leak bug") added a kfree() for 'buf' if bio_integrity_add_page() returns '0'. However, the object will be freed in bio_integrity_free() since 'bio->bi_opf' and 'bio->bi_integrity' were set previousy in bio_integrity_alloc(). Fixes: commit e7bf90e5 ("block/bio-integrity: fix a memory leak bug") Signed-off-by:
yu kuai <yukuai3@huawei.com> Reviewed-by:
Ming Lei <ming.lei@redhat.com> Reviewed-by:
Bob Liu <bob.liu@oracle.com> Acked-by:
Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Jens Axboe <axboe@kernel.dk> Cc: Guenter Roeck <linux@roeck-us.net> Signed-off-by:
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Eric Dumazet authored
commit 7c6d2ecb upstream. Recent change in virtio_net_hdr_to_skb() broke some packetdrill tests. When --mss=XXX option is set, packetdrill always provide gso_type & gso_size for its inbound packets, regardless of packet size. if (packet->tcp && packet->mss) { if (packet->ipv4) gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV4; else gso.gso_type = VIRTIO_NET_HDR_GSO_TCPV6; gso.gso_size = packet->mss; } Since many other programs could do the same, relax virtio_net_hdr_to_skb() to no longer return an error, but instead ignore gso settings. This keeps Willem intent to make sure no malicious packet could reach gso stack. Note that TCP stack has a special logic in tcp_set_skb_tso_segs() to clear gso_size for small packets. Fixes: 6dd912f8 ("net: check untrusted gso_size at kernel entry") Signed-off-by:
Eric Dumazet <edumazet@google.com> Cc: Willem de Bruijn <willemb@google.com> Acked-by:
Willem de Bruijn <willemb@google.com> Signed-off-by:
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- 25 Jun, 2020 20 commits
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Greg Kroah-Hartman authored
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Sean Christopherson authored
[ Upstream commit 6129ed87 ] Set the mmio_value to '0' instead of simply clearing the present bit to squash a benign warning in kvm_mmu_set_mmio_spte_mask() that complains about the mmio_value overlapping the lower GFN mask on systems with 52 bits of PA space. Opportunistically clean up the code and comments. Cc: stable@vger.kernel.org Fixes: d43e2675 ("KVM: x86: only do L1TF workaround on affected processors") Signed-off-by:
Sean Christopherson <sean.j.christopherson@intel.com> Message-Id: <20200527084909.23492-1-sean.j.christopherson@intel.com> Signed-off-by:
Paolo Bonzini <pbonzini@redhat.com> Signed-off-by:
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Kai Huang authored
[ Upstream commit f3ecb59d ] Intel MKTME repurposes several high bits of physical address as 'keyID' for memory encryption thus effectively reduces platform's maximum physical address bits. Exactly how many bits are reduced is configured by BIOS. To honor such HW behavior, the repurposed bits are reduced from cpuinfo_x86->x86_phys_bits when MKTME is detected in CPU detection. Similarly, AMD SME/SEV also reduces physical address bits for memory encryption, and cpuinfo->x86_phys_bits is reduced too when SME/SEV is detected, so for both MKTME and SME/SEV, boot_cpu_data.x86_phys_bits doesn't hold physical address bits reported by CPUID anymore. Currently KVM treats bits from boot_cpu_data.x86_phys_bits to 51 as reserved bits, but it's not true anymore for MKTME, since MKTME treats those reduced bits as 'keyID', but not reserved bits. Therefore boot_cpu_data.x86_phys_bits cannot be used to calculate reserved bits anymore, although we can still use it for AMD SME/SEV since SME/SEV treats the reduced bits differently -- they are treated as reserved bits, the same as other reserved bits in page table entity [1]. Fix by introducing a new 'shadow_phys_bits' variable in KVM x86 MMU code to store the effective physical bits w/o reserved bits -- for MKTME, it equals to physical address reported by CPUID, and for SME/SEV, it is boot_cpu_data.x86_phys_bits. Note that for the physical address bits reported to guest should remain unchanged -- KVM should report physical address reported by CPUID to guest, but not boot_cpu_data.x86_phys_bits. Because for Intel MKTME, there's no harm if guest sets up 'keyID' bits in guest page table (since MKTME only works at physical address level), and KVM doesn't even expose MKTME to guest. Arguably, for AMD SME/SEV, guest is aware of SEV thus it should adjust boot_cpu_data.x86_phys_bits when it detects SEV, therefore KVM should still reports physcial address reported by CPUID to guest. Reviewed-by:
Kai Huang <kai.huang@linux.intel.com> Signed-off-by:
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Kai Huang authored
[ Upstream commit 7b6f8a06 ] As a prerequisite to fix several SPTE reserved bits related calculation errors caused by MKTME, which requires kvm_set_mmio_spte_mask() to use local static variable defined in mmu.c. Also move call site of kvm_set_mmio_spte_mask() from kvm_arch_init() to kvm_mmu_module_init() so that kvm_set_mmio_spte_mask() can be static. Reviewed-by:
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NeilBrown authored
[ Upstream commit 33f2c35a ] Due to a bug introduced in Linux 3.14 we cannot determine the correctly layout for a multi-zone RAID0 array - there are two possibilities. It is possible to tell the kernel which to chose using a module parameter, but this can be clumsy to use. It would be best if the choice were recorded in the metadata. So add a feature flag for this purpose. If it is set, then the 'layout' field of the superblock is used to determine which layout to use. If this flag is not set, then mddev->layout gets set to -1, which causes the module parameter to be required. Acked-by:
Guoqing Jiang <guoqing.jiang@cloud.ionos.com> Signed-off-by:
NeilBrown <neilb@suse.de> Signed-off-by:
Song Liu <songliubraving@fb.com> Signed-off-by:
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Vladimir Oltean authored
This reverts commit b145710b which is commit 5d14c304 upstream. The patch is not wrong, but the Fixes: tag is. It should have been: Fixes: 060ad66f ("dpaa_eth: change DMA device") which means that it's fixing a commit which was introduced in: git describe --tags 060ad66f v5.4-rc3-783-g060ad66f which then means it should have not been backported to linux-4.19.y, where things _were_ working and now they're not. Reported-by:
Joakim Tjernlund <joakim.tjernlund@infinera.com> Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Ahmed S. Darwish authored
[ Upstream commit 11d6011c ] Sequence counters write paths are critical sections that must never be preempted, and blocking, even for CONFIG_PREEMPTION=n, is not allowed. Commit 5dbe7c17 ("net: fix kernel deadlock with interface rename and netdev name retrieval.") handled a deadlock, observed with CONFIG_PREEMPTION=n, where the devnet_rename seqcount read side was infinitely spinning: it got scheduled after the seqcount write side blocked inside its own critical section. To fix that deadlock, among other issues, the commit added a cond_resched() inside the read side section. While this will get the non-preemptible kernel eventually unstuck, the seqcount reader is fully exhausting its slice just spinning -- until TIF_NEED_RESCHED is set. The fix is also still broken: if the seqcount reader belongs to a real-time scheduling policy, it can spin forever and the kernel will livelock. Disabling preemption over the seqcount write side critical section will not work: inside it are a number of GFP_KERNEL allocations and mutex locking through the drivers/base/ :: device_rename() call chain. >From all the above, replace the seqcount with a rwsem. Fixes: 5dbe7c17 (net: fix kernel deadlock with interface rename and netdev name retrieval.) Fixes: 30e6c9fa (net: devnet_rename_seq should be a seqcount) Fixes: c91f6df2 (sockopt: Change getsockopt() of SO_BINDTODEVICE to return an interface name) Cc: <stable@vger.kernel.org> Reported-by: kbuild test robot <lkp@intel.com> [ v1 missing up_read() on error exit ] Reported-by: Dan Carpenter <dan.carpenter@oracle.com> [ v1 missing up_read() on error exit ] Signed-off-by:
Ahmed S. Darwish <a.darwish@linutronix.de> Reviewed-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
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Thomas Gleixner authored
[ Upstream commit 2da2b32f ] CONFIG_PREEMPTION is selected by CONFIG_PREEMPT and by CONFIG_PREEMPT_RT. Both PREEMPT and PREEMPT_RT require the same functionality which today depends on CONFIG_PREEMPT. Update the comment to use CONFIG_PREEMPTION. Signed-off-by:
Thomas Gleixner <tglx@linutronix.de> Signed-off-by:
Ingo Molnar <mingo@kernel.org> Signed-off-by:
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Jiri Olsa authored
[ Upstream commit 9b38cc70 ] Ziqian reported lockup when adding retprobe on _raw_spin_lock_irqsave. My test was also able to trigger lockdep output: ============================================ WARNING: possible recursive locking detected 5.6.0-rc6+ #6 Not tainted -------------------------------------------- sched-messaging/2767 is trying to acquire lock: ffffffff9a492798 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_hash_lock+0x52/0xa0 but task is already holding lock: ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&(kretprobe_table_locks[i].lock)); lock(&(kretprobe_table_locks[i].lock)); *** DEADLOCK *** May be due to missing lock nesting notation 1 lock held by sched-messaging/2767: #0: ffffffff9a491a18 (&(kretprobe_table_locks[i].lock)){-.-.}, at: kretprobe_trampoline+0x0/0x50 stack backtrace: CPU: 3 PID: 2767 Comm: sched-messaging Not tainted 5.6.0-rc6+ #6 Call Trace: dump_stack+0x96/0xe0 __lock_acquire.cold.57+0x173/0x2b7 ? native_queued_spin_lock_slowpath+0x42b/0x9e0 ? lockdep_hardirqs_on+0x590/0x590 ? __lock_acquire+0xf63/0x4030 lock_acquire+0x15a/0x3d0 ? kretprobe_hash_lock+0x52/0xa0 _raw_spin_lock_irqsave+0x36/0x70 ? kretprobe_hash_lock+0x52/0xa0 kretprobe_hash_lock+0x52/0xa0 trampoline_handler+0xf8/0x940 ? kprobe_fault_handler+0x380/0x380 ? find_held_lock+0x3a/0x1c0 kretprobe_trampoline+0x25/0x50 ? lock_acquired+0x392/0xbc0 ? _raw_spin_lock_irqsave+0x50/0x70 ? __get_valid_kprobe+0x1f0/0x1f0 ? _raw_spin_unlock_irqrestore+0x3b/0x40 ? finish_task_switch+0x4b9/0x6d0 ? __switch_to_asm+0x34/0x70 ? __switch_to_asm+0x40/0x70 The code within the kretprobe handler checks for probe reentrancy, so we won't trigger any _raw_spin_lock_irqsave probe in there. The problem is in outside kprobe_flush_task, where we call: kprobe_flush_task kretprobe_table_lock raw_spin_lock_irqsave _raw_spin_lock_irqsave where _raw_spin_lock_irqsave triggers the kretprobe and installs kretprobe_trampoline handler on _raw_spin_lock_irqsave return. The kretprobe_trampoline handler is then executed with already locked kretprobe_table_locks, and first thing it does is to lock kretprobe_table_locks ;-) the whole lockup path like: kprobe_flush_task kretprobe_table_lock raw_spin_lock_irqsave _raw_spin_lock_irqsave ---> probe triggered, kretprobe_trampoline installed ---> kretprobe_table_locks locked kretprobe_trampoline trampoline_handler kretprobe_hash_lock(current, &head, &flags); <--- deadlock Adding kprobe_busy_begin/end helpers that mark code with fake probe installed to prevent triggering of another kprobe within this code. Using these helpers in kprobe_flush_task, so the probe recursion protection check is hit and the probe is never set to prevent above lockup. Link: http://lkml.kernel.org/r/158927059835.27680.7011202830041561604.stgit@devnote2 Fixes: ef53d9c5 ("kprobes: improve kretprobe scalability with hashed locking") Cc: Ingo Molnar <mingo@kernel.org> Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org> Cc: Anders Roxell <anders.roxell@linaro.org> Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: stable@vger.kernel.org Reported-by:
"Ziqian SUN (Zamir)" <zsun@redhat.com> Acked-by:
Masami Hiramatsu <mhiramat@kernel.org> Signed-off-by:
Jiri Olsa <jolsa@kernel.org> Signed-off-by:
Steven Rostedt (VMware) <rostedt@goodmis.org> Signed-off-by:
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Alexander Sverdlin authored
commit 0c34bb59 upstream. The removal of mips_swiotlb_ops exposed a problem in octeon_mgmt Ethernet driver. mips_swiotlb_ops had an mb() after most of the operations and the removal of the ops had broken the receive functionality of the driver. My code inspection has shown no other places except octeon_mgmt_rx_fill_ring() where an explicit barrier would be obviously missing. The latter function however has to make sure that "ringing the bell" doesn't happen before RX ring entry is really written. The patch has been successfully tested on Octeon II. Fixes: a999933d ("MIPS: remove mips_swiotlb_ops") Cc: stable@vger.kernel.org Signed-off-by:
Alexander Sverdlin <alexander.sverdlin@nokia.com> Signed-off-by:
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Chen Yu authored
commit 6bf6be11 upstream. Currently the system will be woken up via WOL(Wake On LAN) even if the device wakeup ability has been disabled via sysfs: cat /sys/devices/pci0000:00/0000:00:1f.6/power/wakeup disabled The system should not be woken up if the user has explicitly disabled the wake up ability for this device. This patch clears the WOL ability of this network device if the user has disabled the wake up ability in sysfs. Fixes: bc7f75fa ("[E1000E]: New pci-express e1000 driver") Reported-by:
"Rafael J. Wysocki" <rafael.j.wysocki@intel.com> Reviewed-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Cc: <Stable@vger.kernel.org> Signed-off-by:
Chen Yu <yu.c.chen@intel.com> Tested-by:
Aaron Brown <aaron.f.brown@intel.com> Signed-off-by:
Jeff Kirsher <jeffrey.t.kirsher@intel.com> Signed-off-by:
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Masami Hiramatsu authored
commit 1a0aa991 upstream. In kprobe_optimizer() kick_kprobe_optimizer() is called without kprobe_mutex, but this can race with other caller which is protected by kprobe_mutex. To fix that, expand kprobe_mutex protected area to protect kick_kprobe_optimizer() call. Link: http://lkml.kernel.org/r/158927057586.27680.5036330063955940456.stgit@devnote2 Fixes: cd7ebe22 ("kprobes: Use text_poke_smp_batch for optimizing") Cc: Ingo Molnar <mingo@kernel.org> Cc: "Gustavo A . R . Silva" <gustavoars@kernel.org> Cc: Anders Roxell <anders.roxell@linaro.org> Cc: "Naveen N . Rao" <naveen.n.rao@linux.ibm.com> Cc: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com> Cc: David Miller <davem@davemloft.net> Cc: Ingo Molnar <mingo@elte.hu> Cc: Peter Zijlstra <peterz@infradead.org> Cc: Ziqian SUN <zsun@redhat.com> Cc: stable@vger.kernel.org Signed-off-by:
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Eric Biggers authored
commit 77251e41 upstream. When a crypto template needs to be instantiated, CRYPTO_MSG_ALG_REQUEST is sent to crypto_chain. cryptomgr_schedule_probe() handles this by starting a thread to instantiate the template, then waiting for this thread to complete via crypto_larval::completion. This can deadlock because instantiating the template may require loading modules, and this (apparently depending on userspace) may need to wait for the crc-t10dif module (lib/crc-t10dif.c) to be loaded. But crc-t10dif's module_init function uses crypto_register_notifier() and therefore takes crypto_chain.rwsem for write. That can't proceed until the notifier callback has finished, as it holds this semaphore for read. Fix this by removing the wait on crypto_larval::completion from within cryptomgr_schedule_probe(). It's actually unnecessary because crypto_alg_mod_lookup() calls crypto_larval_wait() itself after sending CRYPTO_MSG_ALG_REQUEST. This only actually became a problem in v4.20 due to commit b7637754 ("crc-t10dif: Pick better transform if one becomes available"), but the unnecessary wait was much older. BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=207159Reported-by:
Mike Gerow <gerow@google.com> Fixes: 39871037 ("crypto: algapi - Move larval completion into algboss") Cc: <stable@vger.kernel.org> # v3.6+ Cc: Martin K. Petersen <martin.petersen@oracle.com> Signed-off-by:
Eric Biggers <ebiggers@google.com> Reported-by:
Kai Lüke <kai@kinvolk.io> Signed-off-by:
Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by:
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Herbert Xu authored
commit 7cf81954 upstream. Somewhere along the line the cap on the SG list length for receive was lost. This patch restores it and removes the subsequent test which is now redundant. Fixes: 2d97591e ("crypto: af_alg - consolidation of...") Cc: <stable@vger.kernel.org> Signed-off-by:
Stephan Mueller <smueller@chronox.de> Signed-off-by:
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Imre Deak authored
commit a3005c2e upstream. Atm, hotplug interrupts on TypeC ports are left enabled after detecting an interrupt storm, fix this. Reported-by:
Kunal Joshi <kunal1.joshi@intel.com> References: https://gitlab.freedesktop.org/drm/intel/-/issues/351 Bugzilla: https://gitlab.freedesktop.org/drm/intel/-/issues/1964 Cc: Kunal Joshi <kunal1.joshi@intel.com> Cc: stable@vger.kernel.org Signed-off-by:
Imre Deak <imre.deak@intel.com> Reviewed-by:
Ville Syrjälä <ville.syrjala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200612121731.19596-1-imre.deak@intel.com (cherry picked from commit 587a87b9) Signed-off-by:
Joonas Lahtinen <joonas.lahtinen@linux.intel.com> Signed-off-by:
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Chris Wilson authored
commit 273500ae upstream. Allow batch buffers to read their own _local_ cumulative HW runtime of their logical context. Fixes: 0f2f3975 ("drm/i915: Add gen9 BCS cmdparsing") Signed-off-by:
Chris Wilson <chris@chris-wilson.co.uk> Cc: Mika Kuoppala <mika.kuoppala@linux.intel.com> Cc: <stable@vger.kernel.org> # v5.4+ Reviewed-by:
Mika Kuoppala <mika.kuoppala@linux.intel.com> Link: https://patchwork.freedesktop.org/patch/msgid/20200601161942.30854-1-chris@chris-wilson.co.uk (cherry picked from commit f9496520) Signed-off-by:
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Dmitry V. Levin authored
commit b3583fca upstream. If both the tracer and the tracee are compat processes, and gprs[2] is assigned a value by __poke_user_compat, then the higher 32 bits of gprs[2] are cleared, IS_ERR_VALUE() always returns false, and syscall_get_error() always returns 0. Fix the implementation by sign-extending the value for compat processes the same way as x86 implementation does. The bug was exposed to user space by commit 201766a2 ("ptrace: add PTRACE_GET_SYSCALL_INFO request") and detected by strace test suite. This change fixes strace syscall tampering on s390. Link: https://lkml.kernel.org/r/20200602180051.GA2427@altlinux.org Fixes: 753c4dd6 ("[S390] ptrace changes") Cc: Elvira Khabirova <lineprinter@altlinux.org> Cc: stable@vger.kernel.org # v2.6.28+ Signed-off-by:
Dmitry V. Levin <ldv@altlinux.org> Signed-off-by:
Heiko Carstens <heiko.carstens@de.ibm.com> Signed-off-by:
Vasily Gorbik <gor@linux.ibm.com> Signed-off-by:
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Miquel Raynal authored
[ Upstream commit 75e9a330 ] nand_release() is supposed be called after MTD device registration. Here, only nand_scan() happened, so use nand_cleanup() instead. There is no real Fixes tag applying here as the use of nand_release() in this driver predates by far the introduction of nand_cleanup() in commit d44154f9 ("mtd: nand: Provide nand_cleanup() function to free NAND related resources") which makes this change possible. However, pointing this commit as the culprit for backporting purposes makes sense even if this commit is not introducing any bug. Fixes: d44154f9 ("mtd: nand: Provide nand_cleanup() function to free NAND related resources") Signed-off-by:
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Miquel Raynal authored
[ Upstream commit 8a82bbca ] nand_release() is supposed be called after MTD device registration. Here, only nand_scan() happened, so use nand_cleanup() instead. There is no real Fixes tag applying here as the use of nand_release() in this driver predates the introduction of nand_cleanup() in commit d44154f9 ("mtd: nand: Provide nand_cleanup() function to free NAND related resources") which makes this change possible. However, pointing this commit as the culprit for backporting purposes makes sense even if this commit is not introducing any bug. Fixes: d44154f9 ("mtd: nand: Provide nand_cleanup() function to free NAND related resources") Signed-off-by:
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Miquel Raynal authored
[ Upstream commit 5284024b ] nand_release() is supposed be called after MTD device registration. Here, only nand_scan() happened, so use nand_cleanup() instead. There is no real Fixes tag applying here as the use of nand_release() in this driver predates by far the introduction of nand_cleanup() in commit d44154f9 ("mtd: nand: Provide nand_cleanup() function to free NAND related resources") which makes this change possible, hence pointing it as the commit to fix for backporting purposes, even if this commit is not introducing any bug. Fixes: d44154f9 ("mtd: nand: Provide nand_cleanup() function to free NAND related resources") Signed-off-by:
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