EXT4-fs warning (device sda1): ext4_resize_fs:1914: can't read last block, resize aborted watchdog: BUG: soft lockup - CPU#1 stuck for 134s! [syz-executor3:11609] Modules linked in: irq event stamp: 82450062 hardirqs last enabled at (82450061): [] seqcount_lockdep_reader_access include/linux/seqlock.h:83 [inline] hardirqs last enabled at (82450061): [] read_seqcount_begin include/linux/seqlock.h:164 [inline] hardirqs last enabled at (82450061): [] read_seqbegin include/linux/seqlock.h:433 [inline] hardirqs last enabled at (82450061): [] read_seqbegin_or_lock include/linux/seqlock.h:529 [inline] hardirqs last enabled at (82450061): [] d_walk+0x80f/0xc80 fs/dcache.c:1248 hardirqs last disabled at (82450062): [] interrupt_entry+0xb5/0xf0 arch/x86/entry/entry_64.S:625 softirqs last enabled at (3562038): [] __do_softirq+0x778/0xaf5 kernel/softirq.c:311 softirqs last disabled at (3561965): [] invoke_softirq kernel/softirq.c:365 [inline] softirqs last disabled at (3561965): [] irq_exit+0x1d1/0x200 kernel/softirq.c:405 CPU: 1 PID: 11609 Comm: syz-executor3 Not tainted 4.17.0-rc7+ #72 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_acquire+0x257/0x520 kernel/locking/lockdep.c:3923 RSP: 0018:ffff8801c8ba78d8 EFLAGS: 00000286 ORIG_RAX: ffffffffffffff13 RAX: dffffc0000000000 RBX: 1ffff10039174f20 RCX: 0000000000000000 RDX: 1ffffffff11a31ad RSI: ffff8801d0320bb8 RDI: 0000000000000286 RBP: ffff8801c8ba79c8 R08: 0000000000004394 R09: 0000000000000004 R10: ffff8801d0320c58 R11: ffff8801d0320380 R12: ffff8801d0320380 R13: 0000000000000000 R14: 0000000000000001 R15: 0000000000000000 FS: 0000000002941940(0000) GS:ffff8801daf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000000156c978 CR3: 00000001cb574000 CR4: 00000000001406e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: _raw_spin_lock_nested+0x28/0x40 kernel/locking/spinlock.c:354 d_walk+0x3ad/0xc80 fs/dcache.c:1274 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:00007ffc4611f918 EFLAGS: 00000206 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffc461216c0 RDI: 00007ffc461216c0 RBP: 00007ffc461216c0 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000206 R12: 0000000002942940 R13: 0000000000000000 R14: 00000000000004cd R15: 0000000000057422 Code: 00 00 00 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 5e 02 00 00 48 83 3d 80 6d 74 07 00 0f 84 c8 01 00 00 48 8b bd 20 ff 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 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 7122 Comm: syz-executor6 Not tainted 4.17.0-rc7+ #72 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:188 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:69 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0x26/0x50 kernel/kcov.c:101 RSP: 0018:ffff8801b30ff9e8 EFLAGS: 00000246 RAX: ffff8801aa2706c0 RBX: ffff8801c9b16970 RCX: ffffffff81c664b7 RDX: 0000000000000000 RSI: ffffffff81c664d9 RDI: 0000000000000005 RBP: ffff8801b30ff9e8 R08: ffff8801aa2706c0 R09: ffffed0039362d20 R10: ffffed0039362d20 R11: ffff8801c9b16903 R12: ffff8801c9b16880 R13: dffffc0000000000 R14: ffff8801c9b16900 R15: ffff8801b30ffb50 FS: 0000000000b52940(0000) GS:ffff8801dae00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000b5b978 CR3: 00000001b30b0000 CR4: 00000000001406f0 DR0: 0000000020000000 DR1: 0000000020000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: d_walk+0x3f9/0xc80 fs/dcache.c:1291 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:00007ffe950debf8 EFLAGS: 00000202 ORIG_RAX: 0000000000000054 RAX: ffffffffffffffda RBX: 0000000000000065 RCX: 0000000000455777 RDX: 0000000000000000 RSI: 00007ffe950e09a0 RDI: 00007ffe950e09a0 RBP: 00007ffe950e09a0 R08: 0000000000000000 R09: 0000000000000001 R10: 000000000000000a R11: 0000000000000202 R12: 0000000000b53940 R13: 0000000000000000 R14: 00000000000005f1 R15: 00000000000573f7 Code: 08 5d c3 66 90 55 65 48 8b 04 25 40 ee 01 00 65 8b 15 5f ab 88 7e 48 89 e5 81 e2 00 01 1f 00 48 8b 75 08 75 2b 8b 90 78 12 00 00 <83> fa 02 75 20 48 8b 88 80 12 00 00 8b 80 7c 12 00 00 48 8b 11