XFS (loop0): metadata I/O error in "xfs_btree_read_buf_block+0x1d3/0x2c0" at daddr 0x8 len 8 error 74 XFS (loop0): page discard on page ffffea0001986380, inode 0x50b, offset 0. general protection fault, probably for non-canonical address 0xdffffc0000000039: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000001c8-0x00000000000001cf] CPU: 1 PID: 4187 Comm: syz-executor382 Not tainted 5.15.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 RIP: 0010:errseq_set+0x23/0x110 lib/errseq.c:72 Code: 9c fd eb f4 00 00 cc 55 41 57 41 56 41 54 53 89 f3 49 89 fe e8 1e 49 9c fd 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 b7 00 00 00 41 8b 2e bf 01 f0 ff ff 89 de RSP: 0018:ffffc90002eef0d0 EFLAGS: 00010206 RAX: 0000000000000039 RBX: 00000000ffffff8b RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 00000000ffffff8b RDI: 00000000000001c8 RBP: 00000000ffffff8b R08: dffffc0000000000 R09: fffffbfff1ff3437 R10: fffffbfff1ff3437 R11: 1ffffffff1ff3436 R12: dffffc0000000000 R13: ffffea0001986380 R14: 00000000000001c8 R15: 1ffffd4000330c73 FS: 00007f7ead9be6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000200000001740 CR3: 0000000079c01000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __filemap_set_wb_err+0x1c/0x1b0 mm/filemap.c:730 mapping_set_error include/linux/pagemap.h:60 [inline] iomap_writepage_map fs/iomap/buffered-io.c:1383 [inline] iomap_do_writepage+0x1de0/0x2120 fs/iomap/buffered-io.c:1485 write_cache_pages+0x984/0xfa0 mm/page-writeback.c:2277 iomap_writepages+0x5a/0x210 fs/iomap/buffered-io.c:1516 xfs_vm_writepages+0x129/0x180 fs/xfs/xfs_aops.c:488 do_writepages+0x48d/0x6d0 mm/page-writeback.c:2386 filemap_fdatawrite_wbc+0x1eb/0x240 mm/filemap.c:400 __filemap_fdatawrite_range mm/filemap.c:433 [inline] file_write_and_wait_range+0x129/0x1e0 mm/filemap.c:810 xfs_file_fsync+0x193/0x950 fs/xfs/xfs_file.c:182 generic_write_sync include/linux/fs.h:2989 [inline] xfs_file_buffered_write+0x89b/0x9a0 fs/xfs/xfs_file.c:793 do_iter_readv_writev+0x497/0x600 fs/read_write.c:-1 do_iter_write+0x205/0x7b0 fs/read_write.c:855 vfs_writev fs/read_write.c:928 [inline] do_writev+0x254/0x410 fs/read_write.c:971 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f7eae210339 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 1f 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f7ead9be168 EFLAGS: 00000246 ORIG_RAX: 0000000000000014 RAX: ffffffffffffffda RBX: 00007f7eae29b6e8 RCX: 00007f7eae210339 RDX: 0000000000000001 RSI: 0000200000001740 RDI: 0000000000000004 RBP: 00007f7eae29b6e0 R08: 00007f7ead9be6c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f7eae29b6ec R13: 0000000000000010 R14: 00007ffd7bce17c0 R15: 00007ffd7bce18a8 Modules linked in: ---[ end trace be942d551b7ea99c ]--- RIP: 0010:errseq_set+0x23/0x110 lib/errseq.c:72 Code: 9c fd eb f4 00 00 cc 55 41 57 41 56 41 54 53 89 f3 49 89 fe e8 1e 49 9c fd 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 b7 00 00 00 41 8b 2e bf 01 f0 ff ff 89 de RSP: 0018:ffffc90002eef0d0 EFLAGS: 00010206 RAX: 0000000000000039 RBX: 00000000ffffff8b RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 00000000ffffff8b RDI: 00000000000001c8 RBP: 00000000ffffff8b R08: dffffc0000000000 R09: fffffbfff1ff3437 R10: fffffbfff1ff3437 R11: 1ffffffff1ff3436 R12: dffffc0000000000 R13: ffffea0001986380 R14: 00000000000001c8 R15: 1ffffd4000330c73 FS: 00007f7ead9be6c0(0000) GS:ffff8880b9000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7eae25cea8 CR3: 0000000079c01000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 9c pushf 1: fd std 2: eb f4 jmp 0xfffffff8 4: 00 00 add %al,(%rax) 6: cc int3 7: 55 push %rbp 8: 41 57 push %r15 a: 41 56 push %r14 c: 41 54 push %r12 e: 53 push %rbx f: 89 f3 mov %esi,%ebx 11: 49 89 fe mov %rdi,%r14 14: e8 1e 49 9c fd call 0xfd9c4937 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 b7 00 00 00 jne 0xed 36: 41 8b 2e mov (%r14),%ebp 39: bf 01 f0 ff ff mov $0xfffff001,%edi 3e: 89 de mov %ebx,%esi