BTRFS: error (device loop2 state A) in __cow_file_range_inline:678: errno=-5 IO failure BTRFS info (device loop2 state EA): forced readonly Oops: general protection fault, probably for non-canonical address 0xdffffc0000000026: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000130-0x0000000000000137] CPU: 0 UID: 0 PID: 52 Comm: kworker/u8:3 Not tainted 6.10.0-syzkaller-12562-g1722389b0d86 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 Workqueue: writeback wb_workfn (flush-btrfs-7) RIP: 0010:errseq_set+0x28/0x120 lib/errseq.c:72 Code: 90 90 f3 0f 1e fa 55 41 57 41 56 41 54 53 41 89 f7 49 89 fe e8 e9 05 ec fc 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 cd 00 00 00 45 8b 26 bf 01 f0 ff ff 44 89 RSP: 0018:ffffc90000bc6d48 EFLAGS: 00010202 RAX: 0000000000000026 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 00000000fffffffb RDI: 0000000000000130 RBP: 00000000fffffffb R08: ffffffff934e98b7 R09: 1ffffffff269d316 R10: dffffc0000000000 R11: fffffbfff269d317 R12: ffffc90000bc6f18 R13: dffffc0000000000 R14: 0000000000000130 R15: 00000000fffffffb FS: 0000000000000000(0000) GS:ffff8880b9200000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd3adf9f38 CR3: 00000000541ea000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __filemap_set_wb_err+0x22/0x210 mm/filemap.c:705 mapping_set_error include/linux/pagemap.h:235 [inline] __extent_writepage fs/btrfs/extent_io.c:1594 [inline] extent_write_cache_pages fs/btrfs/extent_io.c:2251 [inline] btrfs_writepages+0x13d5/0x2760 fs/btrfs/extent_io.c:2373 do_writepages+0x35d/0x870 mm/page-writeback.c:2683 __writeback_single_inode+0x165/0x10b0 fs/fs-writeback.c:1651 writeback_sb_inodes+0x99c/0x1380 fs/fs-writeback.c:1947 wb_writeback+0x481/0xd40 fs/fs-writeback.c:2127 wb_do_writeback fs/fs-writeback.c:2274 [inline] wb_workfn+0x410/0x1090 fs/fs-writeback.c:2314 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3312 worker_thread+0x86d/0xd40 kernel/workqueue.c:3390 kthread+0x2f0/0x390 kernel/kthread.c:389 ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:errseq_set+0x28/0x120 lib/errseq.c:72 Code: 90 90 f3 0f 1e fa 55 41 57 41 56 41 54 53 41 89 f7 49 89 fe e8 e9 05 ec fc 4c 89 f0 48 c1 e8 03 48 b9 00 00 00 00 00 fc ff df <0f> b6 04 08 84 c0 0f 85 cd 00 00 00 45 8b 26 bf 01 f0 ff ff 44 89 RSP: 0018:ffffc90000bc6d48 EFLAGS: 00010202 RAX: 0000000000000026 RBX: 0000000000000000 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 00000000fffffffb RDI: 0000000000000130 RBP: 00000000fffffffb R08: ffffffff934e98b7 R09: 1ffffffff269d316 R10: dffffc0000000000 R11: fffffbfff269d317 R12: ffffc90000bc6f18 R13: dffffc0000000000 R14: 0000000000000130 R15: 00000000fffffffb FS: 0000000000000000(0000) GS:ffff8880b9300000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f63ef03a440 CR3: 00000000234c2000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 90 nop 1: 90 nop 2: f3 0f 1e fa endbr64 6: 55 push %rbp 7: 41 57 push %r15 9: 41 56 push %r14 b: 41 54 push %r12 d: 53 push %rbx e: 41 89 f7 mov %esi,%r15d 11: 49 89 fe mov %rdi,%r14 14: e8 e9 05 ec fc call 0xfcec0602 19: 4c 89 f0 mov %r14,%rax 1c: 48 c1 e8 03 shr $0x3,%rax 20: 48 b9 00 00 00 00 00 movabs $0xdffffc0000000000,%rcx 27: fc ff df * 2a: 0f b6 04 08 movzbl (%rax,%rcx,1),%eax <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 cd 00 00 00 jne 0x103 36: 45 8b 26 mov (%r14),%r12d 39: bf 01 f0 ff ff mov $0xfffff001,%edi 3e: 44 rex.R 3f: 89 .byte 0x89