IPv6: ADDRCONF(NETDEV_UP): bond790: link is not ready 8021q: adding VLAN 0 to HW filter on device bond790 bond790: making interface bridge743 the new active one bond790: Enslaving bridge743 as an active interface with an up link watchdog: BUG: soft lockup - CPU#1 stuck for 23s! [syz-executor.3:7782] Modules linked in: irq event stamp: 3943221 hardirqs last enabled at (3943220): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (3943221): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (2889124): [] __do_softirq+0x678/0x980 kernel/softirq.c:318 softirqs last disabled at (2889127): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (2889127): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 1 PID: 7782 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:orc_ip arch/x86/kernel/unwind_orc.c:26 [inline] RIP: 0010:__orc_find+0x6f/0xf0 arch/x86/kernel/unwind_orc.c:48 Code: 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 48 48 63 03 48 01 RSP: 0018:ffff8880ba107198 EFLAGS: 00000a07 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff16f8be1 RBX: ffffffff8b7c5f0c RCX: ffffffff8703424a RDX: 0000000000000000 RSI: ffffffff8bfeeb04 RDI: ffffffff8b7c5f0c RBP: ffffffff8b7c5f0c R08: 0000000000000000 R09: ffffffff8bfeeb04 R10: ffff8880ba10736f R11: 0000000000074071 R12: ffffffff8b7c5f0c R13: ffffffff8b7c5f0c R14: ffffffff8b7c5f0c R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fbf32bda058 CR3: 000000021b119000 CR4: 00000000003426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: orc_find arch/x86/kernel/unwind_orc.c:159 [inline] unwind_next_frame+0x339/0x1400 arch/x86/kernel/unwind_orc.c:422 __save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:44 save_stack mm/kasan/kasan.c:448 [inline] set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc+0xeb/0x160 mm/kasan/kasan.c:553 slab_post_alloc_hook mm/slab.h:445 [inline] slab_alloc_node mm/slab.c:3340 [inline] kmem_cache_alloc_node_trace+0x13c/0x3b0 mm/slab.c:3666 __do_kmalloc_node mm/slab.c:3688 [inline] __kmalloc_node_track_caller+0x38/0x70 mm/slab.c:3703 __kmalloc_reserve net/core/skbuff.c:137 [inline] __alloc_skb+0xae/0x560 net/core/skbuff.c:205 alloc_skb include/linux/skbuff.h:995 [inline] nlmsg_new include/net/netlink.h:511 [inline] __neigh_notify+0x84/0x160 net/core/neighbour.c:2915 neigh_cleanup_and_release+0x71/0xd0 net/core/neighbour.c:106 neigh_del+0x1e5/0x2b0 net/core/neighbour.c:142 neigh_forced_gc net/core/neighbour.c:191 [inline] neigh_alloc net/core/neighbour.c:317 [inline] __neigh_create+0xd72/0x1c40 net/core/neighbour.c:501 ip6_finish_output2+0x8cc/0x2290 net/ipv6/ip6_output.c:117 ip6_finish_output+0x89b/0x10f0 net/ipv6/ip6_output.c:192 NF_HOOK_COND include/linux/netfilter.h:278 [inline] ip6_output+0x205/0x770 net/ipv6/ip6_output.c:209 dst_output include/net/dst.h:455 [inline] NF_HOOK include/linux/netfilter.h:289 [inline] ndisc_send_skb+0xa24/0x1720 net/ipv6/ndisc.c:491 ndisc_send_rs+0x131/0x690 net/ipv6/ndisc.c:685 addrconf_rs_timer+0x384/0x6a0 net/ipv6/addrconf.c:3835 call_timer_fn+0x177/0x700 kernel/time/timer.c:1338 expire_timers+0x243/0x4e0 kernel/time/timer.c:1375 __run_timers kernel/time/timer.c:1696 [inline] run_timer_softirq+0x21c/0x670 kernel/time/timer.c:1709 __do_softirq+0x265/0x980 kernel/softirq.c:292 invoke_softirq kernel/softirq.c:372 [inline] irq_exit+0x215/0x260 kernel/softirq.c:412 exiting_irq arch/x86/include/asm/apic.h:536 [inline] smp_apic_timer_interrupt+0x136/0x550 arch/x86/kernel/apic/apic.c:1098 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:mm_update_next_owner+0x332/0x650 kernel/exit.c:449 Code: c8 29 00 48 8b 04 24 48 8d b8 d0 03 00 00 48 89 f8 48 c1 e8 03 80 3c 18 00 0f 85 aa 02 00 00 48 8b 04 24 48 8b a8 d0 03 00 00 <48> 8d 85 30 fc ff ff 48 81 fd 50 84 e7 89 48 89 04 24 0f 84 0b 01 RSP: 0018:ffff88820dbdfa98 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: ffff88802534a480 RBX: dffffc0000000000 RCX: ffffffff8138bd9e RDX: 0000000000000000 RSI: ffffffff8138bd1b RDI: ffff88802534a850 RBP: ffff888095e804d0 R08: ffff8880b13e8620 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: ffff88802464e080 R13: 0000000000200000 R14: ffff888229e82140 R15: ffff888048536ac0 exit_mm kernel/exit.c:548 [inline] do_exit+0xae4/0x2be0 kernel/exit.c:857 do_group_exit+0x125/0x310 kernel/exit.c:967 get_signal+0x3f2/0x1f70 kernel/signal.c:2589 do_signal+0x8f/0x1670 arch/x86/kernel/signal.c:799 exit_to_usermode_loop+0x204/0x2a0 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fb8c3bdee99 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb8c2554168 EFLAGS: 00000246 ORIG_RAX: 000000000000010e RAX: fffffffffffffdfe RBX: 00007fb8c3cf1f60 RCX: 00007fb8c3bdee99 RDX: 0000000000000000 RSI: 00000000200001c0 RDI: 0000000000000040 RBP: 00007fb8c3c38ff1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000140 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff609b662f R14: 00007fb8c2554300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8005 Comm: kworker/u4:3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:queued_write_lock_slowpath+0x116/0x290 kernel/locking/qrwlock.c:88 Code: df 4c 8d 74 24 28 48 c1 ea 03 41 83 e7 07 4c 8d 2c 02 41 83 c7 03 41 0f b6 45 00 41 38 c7 7c 08 84 c0 0f 85 34 01 00 00 8b 03 <3d> 00 01 00 00 74 1a f3 90 41 0f b6 45 00 41 38 c7 7c eb 84 c0 74 RSP: 0018:ffff88820b007d30 EFLAGS: 00000046 RAX: 0000000000000300 RBX: ffffffff89e09080 RCX: ffffffff814bfec6 RDX: 1ffffffff13c1210 RSI: 0000000000000004 RDI: ffffffff89e09080 RBP: 1ffff11041600fa7 R08: 0000000000000001 R09: fffffbfff13c1210 R10: ffffffff89e09083 R11: 0000000000000000 R12: ffffffff89e09084 R13: fffffbfff13c1210 R14: ffff88820b007d58 R15: 0000000000000003 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c61772e8e0 CR3: 0000000092a61000 CR4: 00000000003426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: queued_write_lock include/asm-generic/qrwlock.h:103 [inline] do_raw_write_lock+0xcf/0x1e0 kernel/locking/spinlock_debug.c:203 exit_notify kernel/exit.c:715 [inline] do_exit+0xc41/0x2be0 kernel/exit.c:890 call_usermodehelper_exec_async+0x48d/0x6a0 kernel/umh.c:129 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 ---------------- Code disassembly (best guess): 0: 72 4d jb 0x4f 2: 4c 89 e0 mov %r12,%rax 5: 48 29 e8 sub %rbp,%rax 8: 48 89 c2 mov %rax,%rdx b: 48 c1 e8 3f shr $0x3f,%rax f: 48 c1 fa 02 sar $0x2,%rdx 13: 48 01 d0 add %rdx,%rax 16: 48 d1 f8 sar %rax 19: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx 1e: 48 89 d8 mov %rbx,%rax 21: 48 c1 e8 03 shr $0x3,%rax 25: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 83 e0 07 and $0x7,%eax 30: 83 c0 03 add $0x3,%eax 33: 38 d0 cmp %dl,%al 35: 7c 04 jl 0x3b 37: 84 d2 test %dl,%dl 39: 75 48 jne 0x83 3b: 48 63 03 movslq (%rbx),%rax 3e: 48 rex.W 3f: 01 .byte 0x1