device lo entered promiscuous mode watchdog: BUG: soft lockup - CPU#0 stuck for 134s! [syz-executor6:4539] Modules linked in: irq event stamp: 63104418 hardirqs last enabled at (63104417): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (63104417): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (63104417): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (63104417): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (63104417): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (63104418): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (4401462): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (4401127): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (4401127): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 0 PID: 4539 Comm: syz-executor6 Not tainted 4.17.0-rc4+ #19 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:783 [inline] RIP: 0010:lock_release+0x4d4/0xa10 kernel/locking/lockdep.c:3942 RSP: 0018:ffff88019f9c78a0 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10033f38f19 RCX: 1ffff10035f545f5 RDX: 1ffffffff11a316d RSI: 0000000000000005 RDI: 0000000000000286 RBP: ffff88019f9c79d0 R08: 1ffff10033f38f1d R09: ffff88019f9c7728 R10: 0000000000000003 R11: 0000000000000004 R12: ffff8801afaa2780 R13: ffff8801a996ad38 R14: ffff8801afaa2780 R15: ffff88019f9c78e8 FS: 0000000000fbe940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd1c422f8c CR3: 000000019f984000 CR4: 00000000001406f0 DR0: 00000000200001c0 DR1: 00000000200001c0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __raw_spin_unlock include/linux/spinlock_api_smp.h:150 [inline] _raw_spin_unlock+0x1a/0x30 kernel/locking/spinlock.c:176 spin_unlock include/linux/spinlock.h:350 [inline] d_walk+0x451/0xc80 fs/dcache.c:1298 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486 vfs_rmdir+0x202/0x470 fs/namei.c:3850 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455777 RSP: 002b:00007ffd1c423698 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffd1c425440 RDI: 00007ffd1c425440 RBP: 00007ffd1c425440 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000202 R12: 0000000000fbf940 R13: 0000000000000000 R14: 0000000000000765 R15: 000000000004e825 Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 a3 03 00 00 48 83 3d 73 84 74 07 00 0f 84 b8 02 00 00 48 8b bd e8 fe ff ff 57 9d <0f> 1f 44 00 00 48 b8 00 00 00 00 00 fc ff df 48 01 c3 48 c7 03 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 4543 Comm: syz-executor5 Not tainted 4.17.0-rc4+ #19 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:arch_local_save_flags arch/x86/include/asm/paravirt.h:778 [inline] RIP: 0010:arch_local_irq_save arch/x86/include/asm/paravirt.h:800 [inline] RIP: 0010:lock_acquire+0xe3/0x520 kernel/locking/lockdep.c:3915 RSP: 0018:ffff88019e01f8d8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 1ffff10033c03f20 RCX: 0000000000000000 RDX: 1ffffffff11a316c RSI: 0000000000000000 RDI: ffffffff88d18b60 RBP: ffff88019e01f9c8 R08: 0000000000000001 R09: 0000000000000000 R10: ffff88019e0142c0 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 00000000011f2940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd15047bdc CR3: 000000019e7f2000 CR4: 00000000001406e0 DR0: 0000000020000080 DR1: 00000000200001c0 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600 Call Trace: __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:144 spin_lock include/linux/spinlock.h:310 [inline] d_walk+0x261/0xc80 fs/dcache.c:1250 shrink_dcache_parent+0x179/0x230 fs/dcache.c:1486 vfs_rmdir+0x202/0x470 fs/namei.c:3850 do_rmdir+0x523/0x610 fs/namei.c:3911 __do_sys_rmdir fs/namei.c:3929 [inline] __se_sys_rmdir fs/namei.c:3927 [inline] __x64_sys_rmdir+0x36/0x40 fs/namei.c:3927 do_syscall_64+0x1b1/0x800 arch/x86/entry/common.c:287 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x455777 RSP: 002b:00007ffd150482e8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffd1504a090 RDI: 00007ffd1504a090 RBP: 00007ffd1504a090 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000006 R11: 0000000000000206 R12: 00000000011f3940 R13: 0000000000000000 R14: 000000000000074d R15: 000000000004e80c Code: 00 8b b2 34 08 00 00 85 f6 0f 85 95 01 00 00 48 c7 c7 60 8b d1 88 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <0f> 85 c9 03 00 00 48 83 3d 2f 7e 74 07 00 0f 84 1b 03 00 00 9c