FAT-fs (loop7): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:5894] Modules linked in: irq event stamp: 116999874 hardirqs last enabled at (116999873): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (116999873): [] _raw_spin_unlock_irqrestore+0x34/0x40 kernel/locking/spinlock.c:191 hardirqs last disabled at (116999874): [] sysvec_apic_timer_interrupt+0xb/0xa0 arch/x86/kernel/apic/apic.c:1095 softirqs last enabled at (7796698): [] asm_call_irq_on_stack+0x12/0x20 softirqs last disabled at (7796683): [] asm_call_irq_on_stack+0x12/0x20 CPU: 0 PID: 5894 Comm: syz-executor.4 Not tainted 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:__preempt_count_sub arch/x86/include/asm/preempt.h:84 [inline] RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:161 [inline] RIP: 0010:_raw_spin_unlock_irqrestore+0x25/0x40 kernel/locking/spinlock.c:191 Code: 80 00 00 00 00 55 48 89 fd 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 ca 9c 61 fd 48 89 ef e8 52 58 62 fd f6 c7 02 75 0c 53 9d <65> ff 0d 34 e1 3c 7c 5b 5d c3 e8 2c bc 80 fd eb ed 66 2e 0f 1f 84 RSP: 0018:ffff888048cb7d88 EFLAGS: 00000206 RAX: 0000000006f946c1 RBX: 0000000000000206 RCX: 1ffffffff0a89799 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff83c50dd4 RBP: ffff888008ff9450 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000001 R13: ffff888008ff9000 R14: ffff888008ff9450 R15: ffff888008ff9000 FS: 00007f260dda9700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f66db680580 CR3: 000000003c42c000 CR4: 0000000000350ef0 Call Trace: io_cqring_wait fs/io_uring.c:7054 [inline] __do_sys_io_uring_enter+0xded/0x1910 fs/io_uring.c:9119 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 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:00007f260dda9188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609 RDX: 000000000000bae1 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffdbce6c91f R14: 00007f260dda9300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5892 Comm: syz-executor.1 Not tainted 5.10.45 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:kasan_mem_to_shadow include/linux/kasan.h:35 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/generic.c:134 [inline] RIP: 0010:memory_is_poisoned mm/kasan/generic.c:165 [inline] RIP: 0010:check_memory_region_inline mm/kasan/generic.c:183 [inline] RIP: 0010:check_memory_region+0x57/0x1e0 mm/kasan/generic.c:192 Code: 39 f8 0f 87 bc 00 00 00 49 83 e9 01 48 89 fd 48 b8 00 00 00 00 00 fc ff df 4d 89 ca 48 c1 ed 03 49 c1 ea 03 48 01 c5 49 01 c2 <48> 89 e8 49 8d 5a 01 48 89 da 48 29 ea 48 83 fa 10 0f 8e 08 01 00 RSP: 0018:ffff88801916fa98 EFLAGS: 00000086 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: ffffffff812648cb RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff864f06e8 RBP: fffffbfff0c9e0dd R08: 0000000000000000 R09: ffffffff864f06ef R10: fffffbfff0c9e0dd R11: 0000000000000001 R12: 0000000000000000 R13: ffff88800ea308b0 R14: 000000000000065e R15: ffff8880222f0468 FS: 00007f5eba27a700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f66db63bd30 CR3: 0000000021c22000 CR4: 0000000000350ee0 Call Trace: instrument_atomic_read include/linux/instrumented.h:71 [inline] test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline] hlock_class kernel/locking/lockdep.c:198 [inline] check_wait_context kernel/locking/lockdep.c:4509 [inline] __lock_acquire+0x46b/0x5a80 kernel/locking/lockdep.c:4784 lock_acquire kernel/locking/lockdep.c:5444 [inline] lock_acquire+0x197/0x6c0 kernel/locking/lockdep.c:5409 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x36/0x50 kernel/locking/spinlock.c:159 prepare_to_wait_exclusive+0x7d/0x220 kernel/sched/wait.c:258 io_cqring_wait fs/io_uring.c:7041 [inline] __do_sys_io_uring_enter+0x821/0x1910 fs/io_uring.c:9119 do_syscall_64+0x33/0x40 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x466609 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:00007f5eba27a188 EFLAGS: 00000246 ORIG_RAX: 00000000000001aa RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 0000000000466609 RDX: 000000000000bae1 RSI: 0000000000000000 RDI: 0000000000000003 RBP: 00000000004bfcb9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 000000000056c038 R13: 00007ffdfea1a8cf R14: 00007f5eba27a300 R15: 0000000000022000