syzbot


WARNING in fiemap_process_hole

Status: auto-obsoleted due to no activity on 2024/03/11 07:42
Subsystems: btrfs
[Documentation on labels]
Reported-by: syzbot+35281eae12e6fa221f16@syzkaller.appspotmail.com
First crash: 134d, last: 134d
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [btrfs?] WARNING in fiemap_process_hole 0 (1) 2023/12/12 13:32

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 31576 at fs/btrfs/extent_io.c:2454 emit_fiemap_extent fs/btrfs/extent_io.c:2454 [inline]
WARNING: CPU: 1 PID: 31576 at fs/btrfs/extent_io.c:2454 fiemap_process_hole+0x9e0/0xaf0 fs/btrfs/extent_io.c:2695
Modules linked in:
CPU: 1 PID: 31576 Comm: syz-executor.4 Not tainted 6.7.0-rc3-syzkaller-00284-g815fb87b7530 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:emit_fiemap_extent fs/btrfs/extent_io.c:2454 [inline]
RIP: 0010:fiemap_process_hole+0x9e0/0xaf0 fs/btrfs/extent_io.c:2695
Code: 85 ed 0f 45 c8 89 4c 24 14 4c 8b 7c 24 18 49 89 dd eb 39 e8 82 d2 f0 fd eb 32 e8 7b d2 f0 fd e9 a5 00 00 00 e8 71 d2 f0 fd 90 <0f> 0b 90 41 bd ea ff ff ff 49 bc 00 00 00 00 00 fc ff df e9 87 00
RSP: 0018:ffffc90003897520 EFLAGS: 00010287
RAX: ffffffff839da7cf RBX: 0000000000027000 RCX: 0000000000040000
RDX: ffffc9000c740000 RSI: 00000000000057d1 RDI: 00000000000057d2
RBP: ffffc90003897690 R08: ffffffff839da273 R09: 1ffffffff21bae90
R10: dffffc0000000000 R11: fffffbfff21bae91 R12: 1ffff92000712f1e
R13: 00000000000d9000 R14: 0000000000101000 R15: 1ffff92000712f1f
FS:  00007f73188496c0(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f39fba05000 CR3: 000000005143e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 extent_fiemap+0xeae/0x1fe0
 btrfs_fiemap+0x178/0x1e0 fs/btrfs/inode.c:7830
 ioctl_fiemap fs/ioctl.c:220 [inline]
 do_vfs_ioctl+0x19ea/0x2b40 fs/ioctl.c:811
 __do_sys_ioctl fs/ioctl.c:869 [inline]
 __se_sys_ioctl+0x81/0x170 fs/ioctl.c:857
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x45/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f7317a7cae9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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:00007f73188490c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f7317b9c120 RCX: 00007f7317a7cae9
RDX: 00000000200000c0 RSI: 00000000c020660b RDI: 0000000000000005
RBP: 00007f7317ac847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f7317b9c120 R15: 00007fff6ffca378
 </TASK>

Crashes (1):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2023/12/02 07:41 upstream 815fb87b7530 f819d6f7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in fiemap_process_hole
* Struck through repros no longer work on HEAD.