====================================== | | WAIT TIMEOUT stdout | [ 33.546702][ T306] Oops: general protection fault, probably for non-canonical address 0xfbd59c0000000024: 0000 [#1] PREEMPT SMP KASAN NOPTI | [ 33.547126][ T306] KASAN: maybe wild-memory-access in range [0xdead000000000120-0xdead000000000127] [ 33.547554][ T306] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014 [ 33.547845][ T306] RIP: 0010:neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) [ 33.548015][ T306] 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 [ 33.548493][ T306] RSP: 0018:ffffc90000e6ef10 EFLAGS: 00010a06 [ 33.548662][ T306] RAX: 1bd5a00000000024 RBX: 0000000000000000 RCX: 0000000000000000 [ 33.548859][ T306] RDX: 1ffff11000d2999e RSI: ffff88800694c000 RDI: ffff888008112808 [ 33.549055][ T306] RBP: dead000000000122 R08: ffff888008112800 R09: fffff520001cdde3 [ 33.549250][ T306] R10: 0000000000000003 R11: ffffc90000e6eac9 R12: ffff88800811293c [ 33.549447][ T306] R13: dffffc0000000000 R14: ffff88800694c000 R15: ffff888008112800 [ 33.549643][ T306] FS: 00007f4e89ef6800(0000) GS:ffff888036000000(0000) knlGS:0000000000000000 [ 33.549870][ T306] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 [ 33.550042][ T306] CR2: 00000000004e2a80 CR3: 000000000707e003 CR4: 0000000000772ef0 [ 33.550242][ T306] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 [ 33.550437][ T306] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 [ 33.550630][ T306] PKRU: 55555554 [ 33.550731][ T306] Call Trace: [ 33.550828][ T306] <TASK> [ 33.550899][ T306] ? die_addr (arch/x86/kernel/dumpstack.c:421 arch/x86/kernel/dumpstack.c:460) [ 33.551003][ T306] ? exc_general_protection (arch/x86/kernel/traps.c:751 arch/x86/kernel/traps.c:693) [ 33.551139][ T306] ? asm_exc_general_protection (./arch/x86/include/asm/idtentry.h:617) [ 33.551272][ T306] ? neigh_flush_dev.isra.0 (./include/linux/list.h:988 ./include/linux/rculist.h:516 net/core/neighbour.c:384) [ 33.551401][ T306] ? lock_acquire (kernel/locking/lockdep.c:5798) [ 33.551533][ T306] __neigh_ifdown.isra.0 (net/core/neighbour.c:826 net/core/neighbour.c:426) [ 33.551664][ T306] ? fib_flush (net/ipv4/fib_frontend.c:195 (discriminator 11)) [ 33.551765][ T306] neigh_ifdown (net/core/neighbour.c:445) [ 33.551863][ T306] fib_netdev_event (net/ipv4/fib_frontend.c:1521) [ 33.551993][ T306] notifier_call_chain (kernel/notifier.c:93 (discriminator 2)) [ 33.552129][ T306] dev_close_many (net/core/dev.c:1590) [ 33.552262][ T306] ? __pfx_dev_close_many (net/core/dev.c:1577) [ 33.552393][ T306] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 33.552525][ T306] unregister_netdevice_many_notify (net/core/dev.c:11503) [ 33.552687][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 33.552818][ T306] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 33.552949][ T306] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 33.553079][ T306] ? __pfx_unregister_netdevice_many_notify (net/core/dev.c:11470) [ 33.553242][ T306] ? sock_def_readable (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/core/sock.c:3464) [ 33.553374][ T306] ? 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) [ 33.553504][ T306] ? rtnl_is_locked (net/core/rtnetlink.c:164) [ 33.553632][ T306] ? unregister_netdevice_queue (net/core/dev.c:11455) [ 33.553793][ T306] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11454) [ 33.553954][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 33.554085][ T306] ? __pfx_unregister_netdevice_queue (net/core/dev.c:11454) [ 33.554251][ T306] rtnl_dellink (net/core/rtnetlink.c:3329 net/core/rtnetlink.c:3379) [ 33.554382][ T306] ? 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) [ 33.554511][ T306] ? __pfx_rtnl_dellink (net/core/rtnetlink.c:3335) [ 33.554642][ T306] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 33.554783][ T306] ? trace_contention_end (./include/trace/events/lock.h:122 (discriminator 52)) [ 33.554913][ T306] ? __mutex_lock (./arch/x86/include/asm/preempt.h:94 kernel/locking/mutex.c:618 kernel/locking/mutex.c:752) [ 33.555045][ T306] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 33.555178][ T306] ? rtnetlink_rcv_msg (net/core/rtnetlink.c:6719) [ 33.555308][ T306] ? __pfx___mutex_lock (kernel/locking/mutex.c:751) [ 33.555441][ T306] ? __pfx___lock_release (kernel/locking/lockdep.c:5477) [ 33.555570][ T306] ? __pfx_lock_acquire.part.0 (kernel/locking/lockdep.c:5790) [ 33.555701][ T306] ? trace_lock_acquire (./include/trace/events/lock.h:24 (discriminator 52)) [ 33.555832][ T306] rtnetlink_rcv_msg (net/core/rtnetlink.c:6721) [ 33.555964][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) [ 33.556093][ T306] ? 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) [ 33.556225][ T306] ? mark_lock (kernel/locking/lockdep.c:4703 (discriminator 3)) [ 33.556325][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 33.556458][ T306] netlink_rcv_skb (net/netlink/af_netlink.c:2551) [ 33.556590][ T306] ? __pfx_rtnetlink_rcv_msg (net/core/rtnetlink.c:6615) [ 33.556721][ T306] ? __pfx_netlink_rcv_skb (net/netlink/af_netlink.c:2528) [ 33.556856][ T306] ? netlink_deliver_tap (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:880 net/netlink/af_netlink.c:340) [ 33.556988][ T306] ? 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) [ 33.557120][ T306] netlink_unicast (net/netlink/af_netlink.c:1331 net/netlink/af_netlink.c:1357) [ 33.557250][ T306] ? __pfx_netlink_unicast (net/netlink/af_netlink.c:1342) [ 33.557384][ T306] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 33.557515][ T306] netlink_sendmsg (net/netlink/af_netlink.c:1901) [ 33.557647][ T306] ? __pfx_netlink_sendmsg (net/netlink/af_netlink.c:1820) [ 33.557776][ T306] ? __might_fault (mm/memory.c:6700 mm/memory.c:6693) [ 33.557907][ T306] ? __import_iovec (lib/iov_iter.c:1433 lib/iov_iter.c:1449) [ 33.558041][ T306] ____sys_sendmsg (net/socket.c:729 net/socket.c:744 net/socket.c:2607) [ 33.558174][ T306] ? __pfx_____sys_sendmsg (net/socket.c:2553) [ 33.558304][ T306] ? __pfx_copy_msghdr_from_user (net/socket.c:2533) [ 33.558486][ T306] ___sys_sendmsg (net/socket.c:2663) [ 33.558619][ T306] ? __pfx_stack_trace_save (kernel/stacktrace.c:114) [ 33.558749][ T306] ? __pfx____sys_sendmsg (net/socket.c:2650) [ 33.558877][ T306] ? __pfx_validate_chain (kernel/locking/lockdep.c:3860) [ 33.559005][ T306] ? __pfx_slab_free_after_rcu_debug (mm/slub.c:4609) [ 33.559168][ T306] ? kasan_save_stack (mm/kasan/common.c:49) [ 33.559297][ T306] ? kasan_save_stack (mm/kasan/common.c:48) [ 33.559424][ T306] ? __kasan_record_aux_stack (mm/kasan/generic.c:541) [ 33.559556][ T306] ? __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) [ 33.559719][ T306] ? __x64_sys_close (fs/open.c:1568 fs/open.c:1550 fs/open.c:1550) [ 33.559851][ T306] ? do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 33.559982][ T306] ? entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 33.560142][ T306] ? __lock_acquire (kernel/locking/lockdep.c:5202) [ 33.560275][ T306] ? find_held_lock (kernel/locking/lockdep.c:5315) [ 33.560406][ T306] ? __lock_release (kernel/locking/lockdep.c:5501) [ 33.560536][ T306] ? fdget (./include/linux/atomic/atomic-arch-fallback.h:479 ./include/linux/atomic/atomic-instrumented.h:50 fs/file.c:1114 fs/file.c:1128) [ 33.560638][ T306] __sys_sendmsg (./include/linux/file.h:35 net/socket.c:2692) [ 33.560773][ T306] ? __pfx___sys_sendmsg (net/socket.c:2678) [ 33.560902][ T306] ? __virt_addr_valid (./include/linux/rcupdate.h:347 ./include/linux/rcupdate.h:962 ./include/linux/mmzone.h:2053 arch/x86/mm/physaddr.c:65) [ 33.561038][ T306] do_syscall_64 (arch/x86/entry/common.c:52 arch/x86/entry/common.c:83) [ 33.561168][ T306] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:130) [ 33.561329][ T306] RIP: 0033:0x7f4e8a1027b7 [ 33.561464][ T306] 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) [ 33.561924][ T306] RSP: 002b:00007ffcf7331488 EFLAGS: 00000246 ORIG_RAX: 000000000000002e [ 33.562119][ T306] RAX: ffffffffffffffda RBX: 00007ffcf7331bb0 RCX: 00007f4e8a1027b7 [ 33.562313][ T306] RDX: 0000000000000000 RSI: 00007ffcf73314f0 RDI: 0000000000000005 [ 33.562508][ T306] RBP: 0000000000000001 R08: 0000000000000003 R09: 0000000000000078 [ 33.562703][ T306] R10: 00007f4e89fc0ef8 R11: 0000000000000246 R12: 0000000000000001 Finger prints: neigh_ifdown:fib_netdev_event:notifier_call_chain:dev_close_many:unregister_netdevice_many_notify