syzbot


WARNING in iov_iter_revert (5)

Status: upstream: reported C repro on 2024/08/20 14:21
Subsystems: fs
[Documentation on labels]
Reported-by: syzbot+1e5f71cac2c1db825478@syzkaller.appspotmail.com
First crash: 187d, last: 14d
Cause bisection: failed (error log, bisect log)
  
Fix bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [ntfs3?] WARNING in iov_iter_revert (5) 0 (1) 2024/08/20 14:21
Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream WARNING in iov_iter_revert net C 74 2407d 2474d 8/28 fixed on 2018/08/07 13:43
upstream WARNING in iov_iter_revert (2) serial C done 9 1463d 1464d 20/28 fixed on 2021/04/09 19:46
linux-6.1 WARNING in iov_iter_revert origin:lts-only C done 1 501d 556d 0/3 upstream: reported C repro on 2023/08/13 18:12
upstream WARNING in iov_iter_revert (4) ntfs3 C done error 4 570d 622d 0/28 auto-obsoleted due to no activity on 2023/11/08 23:39
upstream WARNING in iov_iter_revert (3) ntfs3 C error error 26 758d 817d 0/28 auto-obsoleted due to no activity on 2023/05/23 03:07
linux-5.15 WARNING in iov_iter_revert origin:lts-only C done 1 57d 602d 0/3 upstream: reported C repro on 2023/06/28 09:07
Last patch testing requests (6)
Created Duration User Patch Repo Result
2025/02/05 19:19 17m retest repro upstream report log
2025/01/19 13:39 14m retest repro upstream report log
2024/12/25 10:04 14m retest repro upstream report log
2024/11/10 07:25 18m retest repro upstream report log
2024/08/30 21:45 17m retest repro upstream report log
2024/08/30 21:45 15m retest repro upstream report log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6719 at lib/iov_iter.c:615 iov_iter_revert+0x52e/0x590 lib/iov_iter.c:615
Modules linked in:
CPU: 0 UID: 0 PID: 6719 Comm: syz-executor233 Not tainted 6.13.0-syzkaller-02526-gc4b9570cfb63 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024
RIP: 0010:iov_iter_revert+0x52e/0x590 lib/iov_iter.c:615
Code: 8b 5c 24 18 74 08 48 89 df e8 fe 4d 45 fd 4c 89 3b 48 83 c4 38 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc cc cc cc e8 f3 54 e1 fc 90 <0f> 0b 90 eb e2 e8 e8 54 e1 fc eb db 89 d9 80 e1 07 38 c1 0f 8c 3c
RSP: 0018:ffffc90004e7fbd8 EFLAGS: 00010293
RAX: ffffffff84be267d RBX: ffffc90004e7fd90 RCX: ffff88802de63c00
RDX: 0000000000000000 RSI: fffffffffffffc00 RDI: 000000007ffff000
RBP: fffffffffffffc00 R08: ffffffff84be218d R09: 1ffffffff2032e26
R10: dffffc0000000000 R11: fffffbfff2032e27 R12: 1ffff920009cffb5
R13: ffffc90004e7fd90 R14: dffffc0000000000 R15: ffffc90004e7fd40
FS:  00007f08bd3816c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020001000 CR3: 000000002a982000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 generic_file_read_iter+0x3a8/0x550 mm/filemap.c:2808
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x991/0xb70 fs/read_write.c:565
 ksys_read+0x18f/0x2b0 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f08bd3d30f9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 41 1d 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:00007f08bd381218 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 00007f08bd4566c8 RCX: 00007f08bd3d30f9
RDX: 0000000000001000 RSI: 0000000020000400 RDI: 0000000000000004
RBP: 00007f08bd4566c0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f08bd4222b0
R13: 0031656c69662f2e R14: 00007f08bd42004d R15: 636f6c627473616c
 </TASK>

Crashes (7):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/01/22 17:38 upstream c4b9570cfb63 a44b0418 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs WARNING in iov_iter_revert
2024/08/16 21:16 upstream d7a5aa4b3c00 e1c76ab2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-upstream-fs WARNING in iov_iter_revert
2024/08/16 16:08 upstream d7a5aa4b3c00 e1c76ab2 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs WARNING in iov_iter_revert
2025/01/22 16:34 upstream c4b9570cfb63 a44b0418 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in iov_iter_revert
2025/01/22 16:34 upstream c4b9570cfb63 a44b0418 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in iov_iter_revert
2024/10/16 05:27 upstream 2f87d0916ce0 bde2d81c .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in iov_iter_revert
2024/08/16 14:16 upstream d7a5aa4b3c00 e1c76ab2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs WARNING in iov_iter_revert
* Struck through repros no longer work on HEAD.