IPv6: ADDRCONF(NETDEV_UP): vlan3187: link is not ready IPv6: ADDRCONF(NETDEV_UP): vlan1630: link is not ready watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.2:16750] Modules linked in: irq event stamp: 4254545 hardirqs last enabled at (4254544): [] trace_hardirqs_on_thunk+0x1a/0x1c hardirqs last disabled at (4254545): [] trace_hardirqs_off_thunk+0x1a/0x1c softirqs last enabled at (0): [] copy_process.part.0+0x15b9/0x8260 kernel/fork.c:1855 softirqs last disabled at (239): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (239): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 16750 Comm: syz-executor.2 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__kernel_text_address+0x1/0x30 kernel/extable.c:106 Code: 89 ef e8 42 ef 2d 00 0f b6 c0 eb cf 48 c7 c7 04 a7 26 8b e8 71 38 59 00 e9 64 ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 90 53 <48> 89 fb e8 07 ff ff ff 85 c0 75 17 48 81 fb 00 70 37 8c 72 0c 31 RSP: 0018:ffff8880ba0078a0 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: ffff8880ba0078d8 RCX: 0000000000000000 RDX: 1ffff11017400f24 RSI: ffff8880ba007738 RDI: ffffffff8689261a RBP: ffff8880ba007920 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba007937 R11: 0000000000074071 R12: ffff8880ba007970 R13: 0000000000000000 R14: ffff88813bff0c40 R15: 0000000000000740 FS: 00007f6bcc89c700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020003640 CR3: 0000000224132000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 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 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/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] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 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:__save_stack_trace+0x9f/0x190 arch/x86/kernel/stacktrace.c:43 Code: 85 d2 75 2d eb 62 41 8b 04 24 41 3b 44 24 04 73 76 49 8b 54 24 08 8d 48 01 41 89 0c 24 48 89 1c c2 48 8d 7d 80 e8 e1 9e 06 00 <8b> 45 80 85 c0 74 37 48 8d 7d 80 e8 71 9a 06 00 48 85 c0 48 89 c3 RSP: 0018:ffff88821d55f9d0 EFLAGS: 00000282 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffffffff870067cc RCX: 0000000000000000 RDX: dffffc0000000000 RSI: ffff88821d55f840 RDI: 0000000000000001 RBP: ffff88821d55fa60 R08: 0000000000000001 R09: 0000000000000001 R10: ffff88821d55fa3f R11: 0000000000074071 R12: ffff88821d55fa78 R13: 0000000000000000 R14: ffff88823a75a4c0 R15: 00000000000006c0 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 mm/slab.c:3397 [inline] kmem_cache_alloc+0x110/0x370 mm/slab.c:3557 sk_prot_alloc+0x5f/0x2d0 net/core/sock.c:1460 sk_alloc+0x36/0xec0 net/core/sock.c:1520 unix_create1+0xbc/0x530 net/unix/af_unix.c:785 unix_create+0xf9/0x1e0 net/unix/af_unix.c:846 __sock_create+0x3d8/0x740 net/socket.c:1365 sock_create net/socket.c:1416 [inline] __sys_socketpair+0x1be/0x570 net/socket.c:1516 __do_sys_socketpair net/socket.c:1569 [inline] __se_sys_socketpair net/socket.c:1566 [inline] __x64_sys_socketpair+0x93/0xf0 net/socket.c:1566 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665f9 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:00007f6bcc89c188 EFLAGS: 00000246 ORIG_RAX: 0000000000000035 RAX: ffffffffffffffda RBX: 000000000056bf80 RCX: 00000000004665f9 RDX: 0000000000000000 RSI: 0020000000000001 RDI: 0000000000000001 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000100 R11: 0000000000000246 R12: 000000000056bf80 R13: 00007fff734bb72f R14: 00007f6bcc89c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 16755 Comm: syz-executor.2 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:native_apic_mem_write+0x8/0x10 arch/x86/include/asm/apic.h:109 Code: 3d 1c 04 3d 0b 01 7f 02 5d c3 89 ef 5d e9 10 cd c9 06 48 c7 c7 00 87 65 8c e8 24 e2 6f 00 eb df 66 90 89 ff 89 b7 00 c0 5f ff 0f 1f 80 00 00 00 00 48 b8 00 00 00 00 00 fc ff df 53 89 fb 48 RSP: 0018:ffff8880ba1077a0 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff89cfa1a0 RCX: ffffffff83771ea3 RDX: 1ffffffff139f434 RSI: 0000000000000000 RDI: 00000000000000b0 RBP: 0000000000000000 R08: ffffffff8c664058 R09: 0000000000000000 R10: 0000000000000005 R11: ffffffff8c66405b R12: ffff88821a5ef768 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f6bcc87b700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffc1c729fac CR3: 0000000224132000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: apic_eoi arch/x86/include/asm/apic.h:394 [inline] ack_APIC_irq arch/x86/include/asm/apic.h:440 [inline] entering_ack_irq arch/x86/include/asm/apic.h:524 [inline] smp_apic_timer_interrupt+0x7d/0x550 arch/x86/kernel/apic/apic.c:1094 apic_timer_interrupt+0xf/0x20 arch/x86/entry/entry_64.S:894 RIP: 0010:kernel_text_address+0x70/0xf0 kernel/extable.c:160 Code: 00 00 83 3d e5 7a e7 09 01 76 20 e8 6a 6e 12 00 84 c0 74 32 48 89 ef e8 7e ee 1a 00 84 c0 74 4f 48 83 c4 08 b8 01 00 00 00 5d 48 81 fd 00 70 37 8c 72 d7 48 81 fd 56 60 50 8c 72 e3 e8 38 6e RSP: 0018:ffff8880ba107898 EFLAGS: 00000296 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000001 RBX: ffffffff867fe388 RCX: 0000000000000000 RDX: 1ffff11017420f24 RSI: ffff8880ba107738 RDI: ffffffff867fe388 RBP: ffff8880ba107920 R08: 0000000000000001 R09: 0000000000000001 R10: ffff8880ba107937 R11: 0000000000074071 R12: ffff8880ba107970 R13: 0000000000000000 R14: ffff88813bff0c40 R15: 0000000000000740 __kernel_text_address+0x9/0x30 kernel/extable.c:107 unwind_get_return_address arch/x86/kernel/unwind_orc.c:297 [inline] unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:292 __save_stack_trace+0xaf/0x190 arch/x86/kernel/stacktrace.c:45 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 __do_kmalloc_node mm/slab.c:3689 [inline] __kmalloc_node_track_caller+0x4c/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] mrp_pdu_init net/802/mrp.c:316 [inline] mrp_pdu_append_vecattr_event+0x7d2/0x1050 net/802/mrp.c:415 mrp_attr_event+0x15d/0x220 net/802/mrp.c:510 mrp_mad_event net/802/mrp.c:590 [inline] mrp_join_timer+0x5a/0xc0 net/802/mrp.c:607 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:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:queue_work_on+0x165/0x1f0 kernel/workqueue.c:1493 Code: 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 87 00 00 00 48 83 3d df 45 b3 08 00 74 43 e8 d0 55 24 00 48 89 df 57 9d <0f> 1f 44 00 00 eb a9 e8 bf 55 24 00 4c 89 e2 4c 89 ee 89 ef e8 82 RSP: 0018:ffff88821a5ef810 EFLAGS: 00000212 ORIG_RAX: ffffffffffffff13 RAX: 0000000000040000 RBX: 0000000000000212 RCX: ffffc9000a271000 RDX: 0000000000001b8f RSI: ffffffff813e3cf0 RDI: 0000000000000212 RBP: 0000000000000200 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff888219d28800 R13: ffff88813bfcd080 R14: 0000000000000001 R15: ffff888219d28800 queue_work include/linux/workqueue.h:512 [inline] call_usermodehelper_exec+0x34d/0x4d0 kernel/umh.c:571 call_modprobe kernel/kmod.c:99 [inline] __request_module+0x44d/0xb80 kernel/kmod.c:171 dev_load+0x1c2/0x200 net/core/dev_ioctl.c:356 dev_ioctl+0x358/0xc50 net/core/dev_ioctl.c:438 sock_do_ioctl+0x178/0x300 net/socket.c:1038 sock_ioctl+0x2ef/0x5d0 net/socket.c:1135 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688 ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x4665f9 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:00007f6bcc87b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665f9 RDX: 0000000020000680 RSI: 0000000000008923 RDI: 0000000000000008 RBP: 00000000004bfcc4 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038 R13: 00007fff734bb72f R14: 00007f6bcc87b300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 89 ef mov %ebp,%edi 2: e8 42 ef 2d 00 callq 0x2def49 7: 0f b6 c0 movzbl %al,%eax a: eb cf jmp 0xffffffdb c: 48 c7 c7 04 a7 26 8b mov $0xffffffff8b26a704,%rdi 13: e8 71 38 59 00 callq 0x593889 18: e9 64 ff ff ff jmpq 0xffffff81 1d: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 24: 00 00 00 00 28: 90 nop 29: 53 push %rbx * 2a: 48 89 fb mov %rdi,%rbx <-- trapping instruction 2d: e8 07 ff ff ff callq 0xffffff39 32: 85 c0 test %eax,%eax 34: 75 17 jne 0x4d 36: 48 81 fb 00 70 37 8c cmp $0xffffffff8c377000,%rbx 3d: 72 0c jb 0x4b 3f: 31 .byte 0x31