RBP: 00007f74e51e51d0 R08: 0000000000000000 R09: 0000000000000008 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffeb66b8e1f R14: 00007f74e51e5300 R15: 0000000000022000 BTRFS warning (device loop4): direct IO failed ino 263 op 0x8801 offset 0x4000 len 4096 err no 9 general protection fault, probably for non-canonical address 0xdffffc000000000c: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000060-0x0000000000000067] CPU: 1 PID: 12055 Comm: syz-executor.4 Not tainted 6.4.0-syzkaller-12454-g1c7873e33645 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 RIP: 0010:btrfs_finish_ordered_extent+0x3b/0x2c0 fs/btrfs/ordered-data.c:375 Code: 89 d5 41 54 55 48 89 fd 53 44 89 c3 48 83 ec 10 e8 4a d0 11 fe 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4f 02 00 00 48 8b 45 60 0f b6 db 48 89 04 24 0f RSP: 0018:ffffc9001569f4d0 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000bd56000 RDX: 000000000000000c RSI: ffffffff83731146 RDI: 0000000000000060 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000009 R11: 0000000000104de8 R12: 0000000000001000 R13: 0000000000004000 R14: 0000000000001000 R15: 0000000000000000 FS: 00007f74e51e5700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fe719186058 CR3: 000000007b4c2000 CR4: 0000000000350ee0 Call Trace: btrfs_dio_end_io+0x24e/0x460 fs/btrfs/inode.c:7810 btrfs_dio_submit_io+0x459/0x740 fs/btrfs/inode.c:7853 iomap_dio_submit_bio+0x194/0x210 fs/iomap/direct-io.c:75 iomap_dio_bio_iter+0xb26/0x1430 fs/iomap/direct-io.c:347 iomap_dio_iter fs/iomap/direct-io.c:430 [inline] __iomap_dio_rw+0x1010/0x1d80 fs/iomap/direct-io.c:575 btrfs_dio_write+0xb1/0xe0 fs/btrfs/inode.c:7884 btrfs_direct_write fs/btrfs/file.c:1526 [inline] btrfs_do_write_iter+0x971/0x11e0 fs/btrfs/file.c:1667 call_write_iter include/linux/fs.h:1871 [inline] do_iter_readv_writev+0x211/0x3b0 fs/read_write.c:735 do_iter_write+0x182/0x810 fs/read_write.c:860 vfs_writev+0x1b0/0x670 fs/read_write.c:933 do_pwritev+0x1ad/0x260 fs/read_write.c:1030 __do_sys_pwritev2 fs/read_write.c:1089 [inline] __se_sys_pwritev2 fs/read_write.c:1080 [inline] __x64_sys_pwritev2+0xef/0x150 fs/read_write.c:1080 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f74e448c389 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f74e51e5168 EFLAGS: 00000246 ORIG_RAX: 0000000000000148 RAX: ffffffffffffffda RBX: 00007f74e45abf80 RCX: 00007f74e448c389 RDX: 0000000000000002 RSI: 0000000020000240 RDI: 0000000000000005 RBP: 00007f74e51e51d0 R08: 0000000000000000 R09: 0000000000000008 R10: 0000000000004000 R11: 0000000000000246 R12: 0000000000000002 R13: 00007ffeb66b8e1f R14: 00007f74e51e5300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btrfs_finish_ordered_extent+0x3b/0x2c0 fs/btrfs/ordered-data.c:375 Code: 89 d5 41 54 55 48 89 fd 53 44 89 c3 48 83 ec 10 e8 4a d0 11 fe 48 8d 7d 60 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 4f 02 00 00 48 8b 45 60 0f b6 db 48 89 04 24 0f RSP: 0018:ffffc9001569f4d0 EFLAGS: 00010216 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc9000bd56000 RDX: 000000000000000c RSI: ffffffff83731146 RDI: 0000000000000060 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000009 R11: 0000000000104de8 R12: 0000000000001000 R13: 0000000000004000 R14: 0000000000001000 R15: 0000000000000000 FS: 00007f74e51e5700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055f806ef4130 CR3: 000000007b4c2000 CR4: 0000000000350ef0 ---------------- Code disassembly (best guess): 0: 89 d5 mov %edx,%ebp 2: 41 54 push %r12 4: 55 push %rbp 5: 48 89 fd mov %rdi,%rbp 8: 53 push %rbx 9: 44 89 c3 mov %r8d,%ebx c: 48 83 ec 10 sub $0x10,%rsp 10: e8 4a d0 11 fe callq 0xfe11d05f 15: 48 8d 7d 60 lea 0x60(%rbp),%rdi 19: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 20: fc ff df 23: 48 89 fa mov %rdi,%rdx 26: 48 c1 ea 03 shr $0x3,%rdx * 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction 2e: 0f 85 4f 02 00 00 jne 0x283 34: 48 8b 45 60 mov 0x60(%rbp),%rax 38: 0f b6 db movzbl %bl,%ebx 3b: 48 89 04 24 mov %rax,(%rsp) 3f: 0f .byte 0xf