FAT-fs (loop4): Invalid FSINFO signature: 0x00000000, 0x00000000 (sector = 1) Quota error (device loop3): qtree_write_dquot: Error -1079867134 occurred while creating quota BUG: unable to handle kernel paging request at fffffbfff7f4513f PGD 23fff1067 P4D 23fff1067 PUD 23fff0067 PMD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 8147 Comm: syz-executor.3 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022 RIP: 0010:bytes_is_nonzero mm/kasan/kasan.c:167 [inline] RIP: 0010:memory_is_nonzero mm/kasan/kasan.c:184 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline] RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline] RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline] RIP: 0010:check_memory_region+0xc8/0x170 mm/kasan/kasan.c:267 Code: 39 d0 74 0e 80 38 00 74 f2 48 85 c0 0f 85 9c 00 00 00 5b 5d 41 5c c3 48 85 d2 74 f6 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 e8 <80> 38 00 74 f2 eb d8 41 bc 08 00 00 00 48 89 ea 45 29 dc 4e 8d 5c RSP: 0000:ffff888097a9f9b8 EFLAGS: 00010292 RAX: fffffbfff7f4513f RBX: fffffbfff7f45140 RCX: ffffffff81be289e RDX: fffffbfff7f45140 RSI: 0000000000000004 RDI: ffffffffbfa289fa RBP: fffffbfff7f4513f R08: 0000000000000000 R09: fffffbfff7f4513f R10: ffffffffbfa289fd R11: 0000000000000000 R12: ffffffffbfa289fa R13: 0000000000000005 R14: fffffbfff7f4513f R15: ffff8880527ff998 FS: 0000555556bb5400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff7f4513f CR3: 00000000a1537000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: atomic_read include/asm-generic/atomic-instrumented.h:21 [inline] dqput.part.0+0xae/0x830 fs/quota/dquot.c:765 dqput fs/quota/dquot.c:752 [inline] dqput_all fs/quota/dquot.c:391 [inline] __dquot_drop+0x19c/0x270 fs/quota/dquot.c:1568 dquot_drop fs/quota/dquot.c:1593 [inline] dquot_drop+0x14b/0x1a0 fs/quota/dquot.c:1571 ext4_clear_inode+0x31/0x1d0 fs/ext4/super.c:1178 ext4_evict_inode+0x25b/0x17b0 fs/ext4/inode.c:357 evict+0x2ed/0x760 fs/inode.c:559 dispose_list+0x124/0x1f0 fs/inode.c:594 evict_inodes+0x341/0x430 fs/inode.c:644 generic_shutdown_super+0xb3/0x370 fs/super.c:448 kill_block_super+0x97/0xf0 fs/super.c:1185 deactivate_locked_super+0x94/0x160 fs/super.c:329 deactivate_super+0x174/0x1a0 fs/super.c:360 cleanup_mnt+0x1a8/0x290 fs/namespace.c:1098 task_work_run+0x148/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x251/0x2a0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x538/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7f4c29cde837 Code: ff ff ff f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 31 f6 e9 09 00 00 00 66 0f 1f 84 00 00 00 00 00 b8 a6 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff24d8c558 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f4c29cde837 RDX: 00007fff24d8c631 RSI: 000000000000000a RDI: 00007fff24d8c620 RBP: 00007fff24d8c620 R08: 00000000ffffffff R09: 00007fff24d8c3f0 R10: 0000555556bbe8c3 R11: 0000000000000246 R12: 00007f4c29d37466 R13: 00007fff24d8d720 R14: 0000555556bbe850 R15: 00007fff24d8e820 Modules linked in: CR2: fffffbfff7f4513f ---[ end trace 7c4837e356c16f15 ]--- RIP: 0010:bytes_is_nonzero mm/kasan/kasan.c:167 [inline] RIP: 0010:memory_is_nonzero mm/kasan/kasan.c:184 [inline] RIP: 0010:memory_is_poisoned_n mm/kasan/kasan.c:210 [inline] RIP: 0010:memory_is_poisoned mm/kasan/kasan.c:241 [inline] RIP: 0010:check_memory_region_inline mm/kasan/kasan.c:257 [inline] RIP: 0010:check_memory_region+0xc8/0x170 mm/kasan/kasan.c:267 Code: 39 d0 74 0e 80 38 00 74 f2 48 85 c0 0f 85 9c 00 00 00 5b 5d 41 5c c3 48 85 d2 74 f6 48 01 ea eb 09 48 83 c0 01 48 39 d0 74 e8 <80> 38 00 74 f2 eb d8 41 bc 08 00 00 00 48 89 ea 45 29 dc 4e 8d 5c RSP: 0000:ffff888097a9f9b8 EFLAGS: 00010292 RAX: fffffbfff7f4513f RBX: fffffbfff7f45140 RCX: ffffffff81be289e RDX: fffffbfff7f45140 RSI: 0000000000000004 RDI: ffffffffbfa289fa RBP: fffffbfff7f4513f R08: 0000000000000000 R09: fffffbfff7f4513f R10: ffffffffbfa289fd R11: 0000000000000000 R12: ffffffffbfa289fa R13: 0000000000000005 R14: fffffbfff7f4513f R15: ffff8880527ff998 FS: 0000555556bb5400(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: fffffbfff7f4513f CR3: 00000000a1537000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 39 d0 cmp %edx,%eax 2: 74 0e je 0x12 4: 80 38 00 cmpb $0x0,(%rax) 7: 74 f2 je 0xfffffffb 9: 48 85 c0 test %rax,%rax c: 0f 85 9c 00 00 00 jne 0xae 12: 5b pop %rbx 13: 5d pop %rbp 14: 41 5c pop %r12 16: c3 retq 17: 48 85 d2 test %rdx,%rdx 1a: 74 f6 je 0x12 1c: 48 01 ea add %rbp,%rdx 1f: eb 09 jmp 0x2a 21: 48 83 c0 01 add $0x1,%rax 25: 48 39 d0 cmp %rdx,%rax 28: 74 e8 je 0x12 * 2a: 80 38 00 cmpb $0x0,(%rax) <-- trapping instruction 2d: 74 f2 je 0x21 2f: eb d8 jmp 0x9 31: 41 bc 08 00 00 00 mov $0x8,%r12d 37: 48 89 ea mov %rbp,%rdx 3a: 45 29 dc sub %r11d,%r12d 3d: 4e rex.WRX 3e: 8d .byte 0x8d 3f: 5c pop %rsp