ip6_tunnel: ip6gretap433 xmit: Local address not yet configured! ip6_tunnel: ip6gretap379 xmit: Local address not yet configured! ip6_tunnel: ip6gretap289 xmit: Local address not yet configured! ip6_tunnel: ip6gretap310 xmit: Local address not yet configured! watchdog: BUG: soft lockup - CPU#0 stuck for 23s! [syz-executor.5:23094] Modules linked in: irq event stamp: 3878019 hardirqs last enabled at (3878018): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (3878018): [] _raw_spin_unlock_irqrestore+0x79/0xe0 kernel/locking/spinlock.c:184 hardirqs last disabled at (3878019): [] 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 (1215): [] invoke_softirq kernel/softirq.c:372 [inline] softirqs last disabled at (1215): [] irq_exit+0x215/0x260 kernel/softirq.c:412 CPU: 0 PID: 23094 Comm: syz-executor.5 Not tainted 4.19.206-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_irq_restore arch/x86/include/asm/paravirt.h:789 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0xa3/0xe0 kernel/locking/spinlock.c:184 Code: 48 c7 c0 c8 82 f1 89 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 75 2f 48 83 3d fc 5e d8 01 00 74 15 48 89 df 57 9d <0f> 1f 44 00 00 eb b2 e8 3b 19 e7 f8 eb c0 0f 0b 0f 0b 48 c7 c7 c8 RSP: 0018:ffff8880ba007cb0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3059 RBX: 0000000000000286 RCX: 1ffff11012e2393f RDX: dffffc0000000000 RSI: ffff88809711c9d8 RDI: 0000000000000286 RBP: ffff888094df6af0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffff888094df6af0 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f7ea833f700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7ea833efe8 CR3: 0000000207285000 CR4: 00000000001426f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: spin_unlock_irqrestore include/linux/spinlock.h:384 [inline] skb_dequeue+0x125/0x180 net/core/skbuff.c:2839 mrp_queue_xmit net/802/mrp.c:366 [inline] mrp_join_timer+0x97/0xc0 net/802/mrp.c:611 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:shmem_inode_acct_block mm/shmem.c:201 [inline] RIP: 0010:shmem_alloc_and_acct_page+0xf1/0x850 mm/shmem.c:1513 Code: 3c 02 00 0f 85 cb 06 00 00 4c 8b bb 40 ff ff ff 31 ff 41 81 e7 00 00 20 00 4c 89 fe e8 e8 27 dd ff 4d 85 ff 0f 85 7e 03 00 00 4a 26 dd ff 4c 89 f2 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 RSP: 0018:ffff888211427920 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff13 RAX: 0000000000000002 RBX: ffff8880a0770630 RCX: ffffffff8185703a RDX: 0000000000000000 RSI: ffff88809711c100 RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000005 R11: 0000000000000000 R12: 0000000000000001 R13: 0000000000000001 R14: ffff8880b5b22d00 R15: 0000000000000000 shmem_getpage_gfp+0x4e9/0x37f0 mm/shmem.c:1797 shmem_getpage mm/shmem.c:132 [inline] shmem_write_begin+0xff/0x1e0 mm/shmem.c:2446 generic_perform_write+0x1f8/0x4d0 mm/filemap.c:3170 __generic_file_write_iter+0x24b/0x610 mm/filemap.c:3295 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_pwrite64 fs/read_write.c:653 [inline] __do_sys_pwrite64 fs/read_write.c:663 [inline] __se_sys_pwrite64 fs/read_write.c:660 [inline] __x64_sys_pwrite64+0x1f7/0x250 fs/read_write.c:660 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x419797 Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b RSP: 002b:00007f7ea833ef20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00000000004afcc0 RCX: 0000000000419797 RDX: 00000000000001f2 RSI: 0000000020010000 RDI: 0000000000000005 RBP: 0000000000000001 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000005 R13: 0000000000000005 R14: 0000000020000080 R15: 0000000000000000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 23093 Comm: syz-executor.3 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:ffff8880ba107ab8 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffffffff89cfa1a0 RCX: 0000000000000020 RDX: 1ffffffff139f436 RSI: 000000000000006d RDI: 0000000000000380 RBP: ffff8880ba11e2c0 R08: ffffffff8c664058 R09: 0000000000000000 R10: 0000000000000007 R11: ffffffff8c66405b R12: 000000000000006d R13: 0000000000000000 R14: ffff8880ba124cc0 R15: ffff8880ba124d30 FS: 00007f6f278e5700(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f23891e1718 CR3: 000000020a510000 CR4: 00000000001426e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: apic_write arch/x86/include/asm/apic.h:389 [inline] lapic_next_event+0x4d/0x80 arch/x86/kernel/apic/apic.c:460 clockevents_program_event+0x234/0x350 kernel/time/clockevents.c:344 tick_program_event+0xac/0x140 kernel/time/tick-oneshot.c:48 hrtimer_interrupt+0x40a/0x9e0 kernel/time/hrtimer.c:1552 local_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1071 [inline] smp_apic_timer_interrupt+0x10c/0x550 arch/x86/kernel/apic/apic.c:1096 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:lock_acquire+0x1ec/0x3c0 kernel/locking/lockdep.c:3911 Code: 08 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 0f 85 b7 01 00 00 48 83 3d e9 1f a6 08 00 0f 84 2a 01 00 00 48 8b 7c 24 08 57 9d <0f> 1f 44 00 00 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 65 8b RSP: 0018:ffff8880ba107cd0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e3059 RBX: ffff8880449981c0 RCX: 000000000000135d RDX: dffffc0000000000 RSI: 0000000016ab9706 RDI: 0000000000000286 RBP: ffff8880ba107d58 R08: ffffffff8cd20028 R09: 0000000000000002 R10: ffff888044998a98 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001 call_timer_fn+0x113/0x700 kernel/time/timer.c:1335 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:preempt_schedule_irq+0xa6/0x140 kernel/sched/core.c:3744 Code: 00 00 e8 2d 42 29 f9 e8 38 7c 4f f9 4c 89 e8 48 c1 e8 03 80 3c 18 00 75 69 48 83 3d 6b 48 d9 01 00 74 5b fb 66 0f 1f 44 00 00 01 00 00 00 e8 40 d1 ff ff 48 c7 c0 d0 82 f1 89 48 c1 e8 03 80 RSP: 0018:ffff88820ec87b70 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: 1ffffffff13e305b RBX: dffffc0000000000 RCX: 1ffff11008933152 RDX: 0000000000000000 RSI: ffff888044998a70 RDI: ffff888044998a44 RBP: ffffed1008933038 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880449981c0 R13: ffffffff89f182d8 R14: 0000000000000000 R15: 0000000000000000 retint_kernel+0x1b/0x2d RIP: 0010:__generic_file_write_iter+0x18d/0x610 mm/filemap.c:3300 Code: b8 00 00 00 00 00 fc ff df 65 48 8b 1c 25 c0 df 01 00 48 8d bb 28 10 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 07 04 00 00 <48> c7 83 28 10 00 00 00 00 00 00 e8 03 34 e5 ff 4c 89 e0 48 83 c4 RSP: 0018:ffff88820ec87c40 EFLAGS: 00000246 ORIG_RAX: ffffffffffffff02 RAX: dffffc0000000000 RBX: ffff8880449981c0 RCX: ffffc9000c2ff000 RDX: 1ffff1100893323d RSI: ffffffff817d5faa RDI: ffff8880449991e8 RBP: ffff88809d868500 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000007 R11: 0000000000000000 R12: 00000000000000b5 R13: ffff88820ec87d50 R14: ffff8880b5078d68 R15: 0000000000000000 generic_file_write_iter+0x3f8/0x730 mm/filemap.c:3323 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_pwrite64 fs/read_write.c:653 [inline] __do_sys_pwrite64 fs/read_write.c:663 [inline] __se_sys_pwrite64 fs/read_write.c:660 [inline] __x64_sys_pwrite64+0x1f7/0x250 fs/read_write.c:660 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x419797 Code: 08 89 3c 24 48 89 4c 24 18 e8 e5 f8 ff ff 4c 8b 54 24 18 48 8b 54 24 10 41 89 c0 48 8b 74 24 08 8b 3c 24 b8 12 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 04 24 e8 15 f9 ff ff 48 8b RSP: 002b:00007f6f278e4f20 EFLAGS: 00000293 ORIG_RAX: 0000000000000012 RAX: ffffffffffffffda RBX: 00000000004afcc0 RCX: 0000000000419797 RDX: 00000000000000b5 RSI: 0000000020000980 RDI: 0000000000000006 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000600 R11: 0000000000000293 R12: 0000000000000006 R13: 0000000000000006 R14: 0000000020000318 R15: 0000000000000001 ---------------- Code disassembly (best guess): 0: 48 c7 c0 c8 82 f1 89 mov $0xffffffff89f182c8,%rax 7: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx e: fc ff df 11: 48 c1 e8 03 shr $0x3,%rax 15: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) 19: 75 2f jne 0x4a 1b: 48 83 3d fc 5e d8 01 cmpq $0x0,0x1d85efc(%rip) # 0x1d85f1f 22: 00 23: 74 15 je 0x3a 25: 48 89 df mov %rbx,%rdi 28: 57 push %rdi 29: 9d popfq * 2a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) <-- trapping instruction 2f: eb b2 jmp 0xffffffe3 31: e8 3b 19 e7 f8 callq 0xf8e71971 36: eb c0 jmp 0xfffffff8 38: 0f 0b ud2 3a: 0f 0b ud2 3c: 48 rex.W 3d: c7 .byte 0xc7 3e: c7 (bad) 3f: c8 .byte 0xc8