| TITLE: BUG: soft lockup in sys_rmdir |
| TYPE: HANG |
| |
| [ 281.646907] watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor4:4588] |
| [ 281.654759] Modules linked in: |
| [ 281.657946] irq event stamp: 76609500 |
| [ 281.661752] hardirqs last enabled at (76609499): [<ffffffff81c66ccf>] d_walk+0x80f/0xc80 |
| [ 281.670066] hardirqs last disabled at (76609500): [<ffffffff87800905>] interrupt_entry+0xb5/0xf0 |
| [ 281.679024] softirqs last enabled at (468244): [<ffffffff87a00778>] __do_softirq+0x778/0xaf5 |
| [ 281.687696] softirqs last disabled at (468177): [<ffffffff814762c1>] irq_exit+0x1d1/0x200 |
| [ 281.696008] CPU: 1 PID: 4588 Comm: syz-executor4 Not tainted 4.17.0-rc7+ #81 |
| [ 281.703881] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 281.713233] RIP: 0010:d_walk+0x840/0xc80 |
| [ 281.717286] RSP: 0018:ffff880183f5f9f8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 |
| [ 281.724995] RAX: ffff8801b0d3c680 RBX: 0000000000000293 RCX: 1ffff100361a79e5 |
| [ 281.732263] RDX: 0000000000000000 RSI: ffffffff81c66cfb RDI: 0000000000000293 |
| [ 281.739552] RBP: ffff880183f5fb78 R08: ffff8801b0d3ceb8 R09: 0000000000000006 |
| [ 281.746815] R10: ffff8801b0d3c680 R11: 0000000000000000 R12: 0000000000000200 |
| [ 281.754080] R13: dffffc0000000000 R14: 1ffff100307ebf82 R15: ffff880183f5fb50 |
| [ 281.761359] FS: 000000000217c940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 |
| [ 281.769577] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| [ 281.775450] CR2: 00007ffca8309eac CR3: 0000000183eb2000 CR4: 00000000001406e0 |
| [ 281.782717] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 |
| [ 281.789980] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 |
| [ 281.797240] Call Trace: |
| [ 281.829726] shrink_dcache_parent+0x179/0x230 |
| [ 281.859894] vfs_rmdir+0x202/0x470 |
| [ 281.863431] do_rmdir+0x523/0x610 |
| [ 281.890027] __x64_sys_rmdir+0x36/0x40 |
| [ 281.893915] do_syscall_64+0x1b1/0x800 |
| [ 281.922815] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 281.927998] RIP: 0033:0x455777 |
| [ 281.931184] RSP: 002b:00007ffca830a5b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 |
| [ 281.938889] RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 |
| [ 281.946179] RDX: 0000000000000000 RSI: 00007ffca830c360 RDI: 00007ffca830c360 |
| [ 281.953444] RBP: 00007ffca830c360 R08: 0000000000000000 R09: 0000000000000001 |
| [ 281.960792] R10: 0000000000000006 R11: 0000000000000206 R12: 000000000217d940 |
| [ 281.968057] R13: 0000000000000000 R14: 0000000000000198 R15: 000000000001f12d |
| [ 281.994904] Sending NMI from CPU 1 to CPUs 0: |
| [ 281.999398] NMI backtrace for cpu 0 |
| [ 281.999408] CPU: 0 PID: 4581 Comm: syz-executor6 Not tainted 4.17.0-rc7+ #81 |
| [ 281.999413] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 281.999428] RIP: 0010:select_collect+0x249/0x5f0 |
| [ 281.999433] RSP: 0018:ffff880189947908 EFLAGS: 00000286 |
| [ 281.999440] RAX: 0000000000000000 RBX: ffffed0031328f24 RCX: ffffffff81c5c3b4 |
| [ 281.999445] RDX: 0000000000000000 RSI: ffffffff81c5c4fa RDI: ffff880189947c28 |
| [ 281.999450] RBP: ffff8801899479e8 R08: ffff88018993e5c0 R09: ffffed0039dde7a4 |
| [ 281.999455] R10: ffffed0039dde7a4 R11: ffff8801ceef3d23 R12: 0000000000000000 |
| [ 281.999461] R13: 1ffff10031328f28 R14: ffff880189947c18 R15: dffffc0000000000 |
| [ 281.999468] FS: 0000000001790940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 |
| [ 281.999474] CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 |
| [ 281.999479] CR2: 00007ffebea69e9c CR3: 000000018989f000 CR4: 00000000001406f0 |
| [ 281.999487] DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 |
| [ 281.999491] DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 |
| [ 281.999493] Call Trace: |
| [ 281.999541] d_walk+0x3c3/0xc80 |
| [ 281.999601] shrink_dcache_parent+0x179/0x230 |
| [ 281.999670] vfs_rmdir+0x202/0x470 |
| [ 281.999679] do_rmdir+0x523/0x610 |
| [ 281.999740] __x64_sys_rmdir+0x36/0x40 |
| [ 281.999748] do_syscall_64+0x1b1/0x800 |
| [ 281.999806] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 281.999812] RIP: 0033:0x455777 |
| [ 281.999816] RSP: 002b:00007ffebea6a5a8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 |
| [ 281.999824] RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 |
| [ 281.999829] RDX: 0000000000000000 RSI: 00007ffebea6c350 RDI: 00007ffebea6c350 |
| [ 281.999833] RBP: 00007ffebea6c350 R08: 0000000000000000 R09: 0000000000000001 |
| [ 281.999838] R10: 0000000000000006 R11: 0000000000000202 R12: 0000000001791940 |
| [ 281.999843] R13: 0000000000000000 R14: 0000000000000192 R15: 000000000001f12b |
| [ 282.000407] Kernel panic - not syncing: softlockup: hung tasks |
| [ 282.316419] CPU: 1 PID: 4588 Comm: syz-executor4 Tainted: G L 4.17.0-rc7+ #81 |
| [ 282.324992] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 |
| [ 282.334334] Call Trace: |
| [ 282.336997] <IRQ> |
| [ 282.339152] dump_stack+0x1b9/0x294 |
| [ 282.352760] panic+0x22f/0x4de |
| [ 282.375494] watchdog_timer_fn.cold.5+0xf3/0x126 |
| [ 282.380251] __hrtimer_run_queues+0x3e3/0x10a0 |
| [ 282.432572] hrtimer_interrupt+0x2f3/0x750 |
| [ 282.436818] smp_apic_timer_interrupt+0x15d/0x710 |
| [ 282.468292] apic_timer_interrupt+0xf/0x20 |
| [ 282.472527] </IRQ> |
| [ 282.474759] RIP: 0010:d_walk+0x840/0xc80 |
| [ 282.478811] RSP: 0018:ffff880183f5f9f8 EFLAGS: 00000293 ORIG_RAX: ffffffffffffff13 |
| [ 282.486516] RAX: ffff8801b0d3c680 RBX: 0000000000000293 RCX: 1ffff100361a79e5 |
| [ 282.493778] RDX: 0000000000000000 RSI: ffffffff81c66cfb RDI: 0000000000000293 |
| [ 282.501043] RBP: ffff880183f5fb78 R08: ffff8801b0d3ceb8 R09: 0000000000000006 |
| [ 282.508310] R10: ffff8801b0d3c680 R11: 0000000000000000 R12: 0000000000000200 |
| [ 282.515587] R13: dffffc0000000000 R14: 1ffff100307ebf82 R15: ffff880183f5fb50 |
| [ 282.556091] shrink_dcache_parent+0x179/0x230 |
| [ 282.586289] vfs_rmdir+0x202/0x470 |
| [ 282.589830] do_rmdir+0x523/0x610 |
| [ 282.616379] __x64_sys_rmdir+0x36/0x40 |
| [ 282.620264] do_syscall_64+0x1b1/0x800 |
| [ 282.649064] entry_SYSCALL_64_after_hwframe+0x49/0xbe |
| [ 282.654251] RIP: 0033:0x455777 |
| [ 282.657434] RSP: 002b:00007ffca830a5b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 |
| [ 282.665140] RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 |
| [ 282.672404] RDX: 0000000000000000 RSI: 00007ffca830c360 RDI: 00007ffca830c360 |
| [ 282.679668] RBP: 00007ffca830c360 R08: 0000000000000000 R09: 0000000000000001 |
| [ 282.687015] R10: 0000000000000006 R11: 0000000000000206 R12: 000000000217d940 |
| [ 282.694282] R13: 0000000000000000 R14: 0000000000000198 R15: 000000000001f12d |
| [ 282.702335] Dumping ftrace buffer: |
| [ 282.706164] (ftrace buffer empty) |
| [ 282.709862] Kernel Offset: disabled |
| [ 282.713505] Rebooting in 86400 seconds.. |
