syzbot has found a reproducer for the following issue on: HEAD commit: a27648c74210 afs: Fix setting of mtime when creating a fil.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=12b04695280000 kernel config: https://syzkaller.appspot.com/x/.config?x=7474de833c217bf4 dashboard link: https://syzkaller.appspot.com/bug?extid=ee90502d5c8fd1d0dd93 compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=120b88fd280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17e6a23b280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/33fadb6220e9/disk-a27648c7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/31a2f6248c1a/vmlinux-a27648c7.xz kernel image: https://storage.googleapis.com/syzbot-assets/c97df5fe3d0b/bzImage-a27648c7.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/735d868a5353/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+ee90502d5c8fd1d0dd93@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5017 at fs/btrfs/ordered-data.c:1138 btrfs_split_ordered_extent+0x628/0x840 Modules linked in: CPU: 1 PID: 5017 Comm: syz-executor199 Not tainted 6.4.0-rc5-syzkaller-00017-ga27648c74210 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 RIP: 0010:btrfs_split_ordered_extent+0x628/0x840 fs/btrfs/ordered-data.c:1138 Code: fe 48 c7 c7 a0 94 2a 8b 48 c7 c6 20 90 2a 8b ba 6c 04 00 00 e8 09 a9 1d 07 e8 f4 4a fb fd 0f 0b e9 21 fb ff ff e8 e8 4a fb fd <0f> 0b bb ea ff ff ff eb b0 e8 da 4a fb fd 0f 0b bb ea ff ff ff eb RSP: 0018:ffffc90003cbedd8 EFLAGS: 00010293 RAX: ffffffff83903448 RBX: 0000000000010000 RCX: ffff88801929bb80 RDX: 0000000000000000 RSI: 0000000000010000 RDI: 0000000000001000 RBP: 1ffff1100fde111b R08: ffffffff83903012 R09: fffffbfff1cab9ae R10: 0000000000000000 R11: dffffc0000000001 R12: dffffc0000000000 R13: ffff88807ef088d8 R14: 0000000000001000 R15: 0000000000000000 FS: 00007f807fad4700(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9cf00c2723 CR3: 000000002b121000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> btrfs_extract_ordered_extent+0x12c/0xb00 fs/btrfs/inode.c:2625 btrfs_dio_submit_io+0x239/0x340 fs/btrfs/inode.c:7737 iomap_dio_submit_bio fs/iomap/direct-io.c:75 [inline] iomap_dio_bio_iter+0xe15/0x1430 fs/iomap/direct-io.c:355 __iomap_dio_rw+0x12c3/0x22e0 fs/iomap/direct-io.c:598 btrfs_dio_write+0xb6/0x100 fs/btrfs/inode.c:7770 btrfs_direct_write fs/btrfs/file.c:1529 [inline] btrfs_do_write_iter+0x870/0x1270 fs/btrfs/file.c:1674 do_iter_write+0x7b1/0xcb0 fs/read_write.c:860 iter_file_splice_write+0x843/0xfe0 fs/splice.c:795 do_splice_from fs/splice.c:873 [inline] direct_splice_actor+0xe7/0x1c0 fs/splice.c:1039 splice_direct_to_actor+0x4c4/0xbd0 fs/splice.c:994 do_splice_direct+0x283/0x3d0 fs/splice.c:1082 do_sendfile+0x620/0xff0 fs/read_write.c:1254 __do_sys_sendfile64 fs/read_write.c:1322 [inline] __se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1308 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f8086f49329 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 15 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:00007f807fad42f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f8086fd27b0 RCX: 00007f8086f49329 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004 RBP: 00007f8086f9f1f4 R08: 00007f807fad4700 R09: 0000000000000000 R10: 0000000008800000 R11: 0000000000000246 R12: 6f63617461646f6e R13: 70735f6473736f6e R14: 0030656c69662f2e R15: 00007f8086fd27b8 </TASK> --- If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing.
