====================================== | [ 4010.840878][T20366] IPv6: Can't replace route, no match found | [ 4129.414483][T21280] Mirror/redirect action on | [ 4209.430391][T21789] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] PREEMPT SMP KASAN NOPTI | [ 4209.430832][T21789] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] [ 4209.431273][T21789] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [4209.431577][T21789] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) [ 4209.431758][T21789] Code: 0f 85 ef 04 00 00 49 8d 7f 08 49 8b 1f 48 89 f8 48 c1 e8 03 42 80 3c 28 00 0f 85 cc 04 00 00 49 8b 6f 08 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 0f 85 19 05 00 00 48 89 5d 00 48 85 db 74 1a 48 8d All code ======== 0: 0f 85 ef 04 00 00 jne 0x4f5 6: 49 8d 7f 08 lea 0x8(%r15),%rdi a: 49 8b 1f mov (%r15),%rbx d: 48 89 f8 mov %rdi,%rax 10: 48 c1 e8 03 shr $0x3,%rax 14: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 19: 0f 85 cc 04 00 00 jne 0x4eb 1f: 49 8b 6f 08 mov 0x8(%r15),%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax 2a:* 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 0f 85 19 05 00 00 jne 0x54e 35: 48 89 5d 00 mov %rbx,0x0(%rbp) 39: 48 85 db test %rbx,%rbx 3c: 74 1a je 0x58 3e: 48 rex.W 3f: 8d .byte 0x8d Code starting with the faulting instruction =========================================== 0: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 5: 0f 85 19 05 00 00 jne 0x524 b: 48 89 5d 00 mov %rbx,0x0(%rbp) f: 48 85 db test %rbx,%rbx 12: 74 1a je 0x2e 14: 48 rex.W 15: 8d .byte 0x8d [ 4209.432231][T21789] RSP: 0018:ffffc90000afef10 EFLAGS: 00010a06 [ 4209.432416][T21789] RAX: 1bd5a00000000024 RBX: 0000000000000000 RCX: 0000000000000000 [ 4209.432619][T21789] RDX: 1ffff1100108799e RSI: ffff88800843c000 RDI: ffff888006160408 [ 4209.432818][T21789] RBP: dead000000000122 R08: ffff888006160400 R09: fffff5200015fde3 [ 4209.433015][T21789] R10: 0000000000000003 R11: 0000000000000018 R12: ffff88800616053c [ 4209.433213][T21789] R13: dffffc0000000000 R14: ffff88800843c000 R15: ffff888006160400 [ 4209.433415][T21789] FS: 00007fdd0ec03800(0000) GS:ffff88802f480000(0000) knlGS:0000000000000000 [ 4209.433646][T21789] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 4209.433814][T21789] CR2: 00000000004e3e28 CR3: 0000000009a1e006 CR4: 0000000000772ef0 [ 4209.434011][T21789] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 4209.434207][T21789] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 4209.434409][T21789] PKRU: 55555554 [ 4209.434514][T21789] Call Trace: [ 4209.434617][T21789] [4209.434688][T21789] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) [4209.434800][T21789] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) [4209.434939][T21789] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) [4209.435075][T21789] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) [4209.435206][T21789] ? lock_acquire (kernel/locking/lockdep.c:5798) [4209.435341][T21789] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) [4209.435478][T21789] ? fib_flush (net/ipv4/fib_frontend.c:195 (discriminator 11)) [4209.435582][T21789] neigh_ifdown (net/core/neighbour.c:445) [4209.435681][T21789] fib_netdev_event (net/ipv4/fib_frontend.c:1521) [4209.435812][T21789] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [4209.435949][T21789] dev_close_many (net/core/dev.c:1590) [4209.436085][T21789] ? __pfx_dev_close_many (net/core/dev.c:1577) [4209.436216][T21789] ? find_held_lock (kernel/locking/lockdep.c:5315) [4209.436351][T21789] unregister_netdevice_many_notify (net/core/dev.c:11503) [4209.436521][T21789] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [4209.436655][T21789] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [4209.436794][T21789] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [4209.436926][T21789] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11470) [4209.437096][T21789] ? sock_def_readable (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/sock.c:3464) [4209.437234][T21789] ? mutex_is_locked (./arch/x86/include/asm/atomic64_64.h:15 ./include/linux/atomic/atomic-arch-fallback.h:2583 ./include/linux/atomic/atomic-long.h:38 ./include/linux/atomic/atomic-instrumented.h:3189 kernel/locking/mutex.c:81 kernel/locking/mutex.c:91) [4209.437366][T21789] ? rtnl_is_locked (net/core/rtnetlink.c:164) [4209.437498][T21789] ? unregister_netdevice_queue (net/core/dev.c:11455) [4209.437669][T21789] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [4209.437802][T21789] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11454) [4209.437966][T21789] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [4209.438065][T21789] ? __nla_validate_parse (./include/net/netlink.h:1267 (discriminator 1) lib/nlattr.c:622 (discriminator 1)) [4209.438201][T21789] rtnl_dellink (net/core/rtnetlink.c:3329 net/core/rtnetlink.c:3379) [4209.438336][T21789] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [4209.438469][T21789] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3335) [4209.438600][T21789] ? find_held_lock (kernel/locking/lockdep.c:5315) [4209.438747][T21789] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [4209.438877][T21789] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [4209.439014][T21789] ? find_held_lock (kernel/locking/lockdep.c:5315) [4209.439144][T21789] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6719) [4209.439276][T21789] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [4209.439407][T21789] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [4209.439538][T21789] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [4209.439671][T21789] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [4209.439809][T21789] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) [4209.439943][T21789] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) [4209.440076][T21789] ? hlock_class (./arch/x86/include/asm/bitops.h:227 ./arch/x86/include/asm/bitops.h:239 ./include/asm-generic/bitops/instrumented-non-atomic.h:142 kernel/locking/lockdep.c:228) [4209.440209][T21789] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [4209.440311][T21789] ? __lock_acquire (kernel/locking/lockdep.c:5202) [4209.440447][T21789] netlink_rcv_skb (net/netlink/af_netlink.c:2551) [4209.440578][T21789] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) [4209.440711][T21789] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) [4209.440853][T21789] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [4209.440987][T21789] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 ./include/net/netns/generic.h:48 net/netlink/af_netlink.c:333) [4209.441121][T21789] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [4209.441253][T21789] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [4209.441384][T21789] ? find_held_lock (kernel/locking/lockdep.c:5315) [4209.441517][T21789] netlink_sendmsg (net/netlink/af_netlink.c:1901) [4209.441651][T21789] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [4209.441782][T21789] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) [4209.441921][T21789] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) [4209.442059][T21789] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) [4209.442195][T21789] ? __pfx_____sys_sendmsg (net/socket.c:2553) [4209.442326][T21789] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) [4209.442495][T21789] ___sys_sendmsg (net/socket.c:2663) [4209.442626][T21789] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [4209.442762][T21789] ? __pfx____sys_sendmsg (net/socket.c:2650) [4209.442893][T21789] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [4209.443030][T21789] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [4209.443196][T21789] ? kasan_save_stack (mm/kasan/common.c:49) [4209.443329][T21789] ? kasan_save_stack (mm/kasan/common.c:48) [4209.443459][T21789] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) [4209.443593][T21789] ? __call_rcu_common.constprop.0 (./arch/x86/include/asm/irqflags.h:26 ./arch/x86/include/asm/irqflags.h:87 ./arch/x86/include/asm/irqflags.h:123 kernel/rcu/tree.c:3087) [4209.443761][T21789] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) [4209.443895][T21789] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [4209.444032][T21789] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [4209.444201][T21789] ? __lock_acquire (kernel/locking/lockdep.c:5202) [4209.444336][T21789] ? find_held_lock (kernel/locking/lockdep.c:5315) [4209.444469][T21789] ? __lock_release (kernel/locking/lockdep.c:5501) [4209.444608][T21789] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) [4209.444714][T21789] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) [4209.444847][T21789] ? __pfx___sys_sendmsg (net/socket.c:2678) [4209.444979][T21789] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) [4209.445119][T21789] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [4209.445260][T21789] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 4209.445424][T21789] RIP: 0033:0x7fdd0ee0f7b7 [ 4209.445564][T21789] Code: 0a 00 f7 d8 64 89 02 48 c7 c0 ff ff ff ff eb b9 0f 1f 00 f3 0f 1e fa 64 8b 04 25 18 00 00 00 85 c0 75 10 b8 2e 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 51 c3 48 83 ec 28 89 54 24 1c 48 89 74 24 10 All code ======== 0: 0a 00 or (%rax),%al 2: f7 d8 neg %eax 4: 64 89 02 mov %eax,%fs:(%rdx) 7: 48 c7 c0 ff ff ff ff mov $0xffffffffffffffff,%rax e: eb b9 jmp 0xffffffffffffffc9 10: 0f 1f 00 nopl (%rax) 13: f3 0f 1e fa endbr64 17: 64 8b 04 25 18 00 00 mov %fs:0x18,%eax 1e: 00 1f: 85 c0 test %eax,%eax 21: 75 10 jne 0x33 23: b8 2e 00 00 00 mov $0x2e,%eax 28: 0f 05 syscall 2a:* 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax <-- trapping instruction 30: 77 51 ja 0x83 32: c3 ret 33: 48 83 ec 28 sub $0x28,%rsp 37: 89 54 24 1c mov %edx,0x1c(%rsp) 3b: 48 89 74 24 10 mov %rsi,0x10(%rsp) Code starting with the faulting instruction =========================================== 0: 48 3d 00 f0 ff ff cmp $0xfffffffffffff000,%rax 6: 77 51 ja 0x59 8: c3 ret 9: 48 83 ec 28 sub $0x28,%rsp d: 89 54 24 1c mov %edx,0x1c(%rsp) 11: 48 89 74 24 10 mov %rsi,0x10(%rsp) [ 4209.446031][T21789] RSP: 002b:00007fff9d2e4328 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 4209.446235][T21789] RAX: ffffffffffffffda RBX: 00007fff9d2e4a60 RCX: 00007fdd0ee0f7b7 [ 4209.446435][T21789] RDX: 0000000000000000 RSI: 00007fff9d2e4390 RDI: 0000000000000005 [ 4209.446636][T21789] RBP: 0000000000000002 R08: 0000000000000003 R09: 0000000000000078 [ 4209.446835][T21789] R10: 00007fdd0eccd4a8 R11: 0000000000000246 R12: 0000000000000002 Finger prints: neigh_ifdown:fib_netdev_event:notifier_call_chain:dev_close_many:unregister_netdevice_many_notify