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WARNING in udf_truncate_extents

Status: upstream: reported C repro on 2023/03/19 00:16
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+c9e721ff7f0f74b75956@syzkaller.appspotmail.com
First crash: 999d, last: 26d
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/05/10 linux-6.1.y (ToT) ca48fc16c493 C [report] INFO: rcu detected stall in corrupted
2023/05/10 upstream (ToT) 16a8829130ca C Didn't crash
▶ ▼ Similar bugs (5)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in udf_truncate_extents -1 C error 4 1171d 1381d 0/1 upstream: reported C repro on 2022/03/01 11:21
linux-4.19 WARNING in udf_truncate_extents udf -1 C error 245 1016d 1541d 0/1 upstream: reported C repro on 2021/09/23 06:31
linux-5.15 WARNING in udf_truncate_extents origin:lts-only -1 C done 205 47d 999d 0/3 upstream: reported C repro on 2023/03/18 20:24
linux-6.6 WARNING in udf_truncate_extents origin:upstream -1 C 109 3d04h 175d 0/2 upstream: reported C repro on 2025/06/19 08:31
upstream WARNING in udf_truncate_extents udf -1 C done error 15407 3h19m 1886d 0/29 upstream: reported C repro on 2020/10/12 13:20
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/09/19 17:01 6h52m fix candidate upstream OK (1) job log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 46 at fs/udf/truncate.c:209 udf_truncate_extents+0xcb4/0xe30 fs/udf/truncate.c:209
Modules linked in:
CPU: 1 PID: 46 Comm: kworker/u4:3 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/02/2025
Workqueue: writeback wb_workfn (flush-7:0)
RIP: 0010:udf_truncate_extents+0xcb4/0xe30 fs/udf/truncate.c:209
Code: 25 28 00 00 00 48 3b 84 24 80 01 00 00 0f 85 b5 00 00 00 44 89 f8 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 cc 6c 9b fe <0f> 0b 49 bd 00 00 00 00 00 fc ff df eb 8b 44 89 e9 80 e1 07 38 c1
RSP: 0018:ffffc90000b76740 EFLAGS: 00010293
RAX: ffffffff82e56994 RBX: ffff888068f907c0 RCX: ffff88801dab0000
RDX: 0000000000000000 RSI: 00000020ffe4edfc RDI: 0000000000000000
RBP: ffffc90000b76910 R08: ffff88801dab0000 R09: 0000000000000002
R10: 0000000000000001 R11: 0000000000000000 R12: 00000020ffe4edfc
R13: ffff888079d02018 R14: 00000020fffffffc R15: 0000000000000000
FS:  0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555637525c8 CR3: 000000007e736000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_do_extend_file+0xd22/0x1030 fs/udf/inode.c:479
 inode_getblk fs/udf/inode.c:686 [inline]
 udf_get_block+0xdd3/0x3cd0 fs/udf/inode.c:359
 __mpage_writepage+0x370/0x1740 fs/mpage.c:533
 write_cache_pages+0x85b/0x1400 mm/page-writeback.c:2382
 mpage_writepages+0xe4/0x190 fs/mpage.c:664
 do_writepages+0x3b7/0x610 mm/page-writeback.c:2491
 __writeback_single_inode+0x156/0x1160 fs/fs-writeback.c:1622
 writeback_sb_inodes+0xad8/0x17d0 fs/fs-writeback.c:1913
 wb_writeback+0x468/0xd00 fs/fs-writeback.c:2087
 wb_do_writeback fs/fs-writeback.c:2230 [inline]
 wb_workfn+0x435/0xec0 fs/fs-writeback.c:2270
 process_one_work+0x898/0x1160 kernel/workqueue.c:2292
 worker_thread+0xaa2/0x1250 kernel/workqueue.c:2439
 kthread+0x29d/0x330 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
 </TASK>

Crashes (423):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/11/12 09:37 linux-6.1.y f6e38ae624cf 4e1406b4 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/01/13 01:57 linux-6.1.y c63962be84ef 6dbc6a9b .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro #1] [mounted in repro #2] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2023/05/08 01:45 linux-6.1.y ca48fc16c493 90c93c40 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/12 05:45 linux-6.1.y 58485ff1a74f 98683f8f .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2023/08/28 22:49 linux-6.1.y 024f76bca9d0 7ba13a15 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2023/07/09 15:58 linux-6.1.y 61fd484b2cf6 668cb1fa .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2023/03/31 17:53 linux-6.1.y 3b29299e5f60 f325deb0 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2023/03/19 00:16 linux-6.1.y 7eaef76fbc46 7939252e .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/11/12 06:17 linux-6.1.y f6e38ae624cf 4e1406b4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/08/11 18:10 linux-6.1.y 3594f306da12 32a0e5ed .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/07/13 23:13 linux-6.1.y dfc486ec9cce 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/28 16:33 linux-6.1.y 7e69c33e4858 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/28 12:51 linux-6.1.y 7e69c33e4858 fc9d8ee5 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/14 22:04 linux-6.1.y 58485ff1a74f 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/14 05:53 linux-6.1.y 58485ff1a74f 0e8da31f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 22:23 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 22:01 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 21:35 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 21:22 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 20:38 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 11:59 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 11:36 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 10:42 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 09:53 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/13 09:21 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/12 12:34 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/12 10:15 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/06/12 09:17 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/03/15 08:38 linux-6.1.y 344a09659766 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/28 12:34 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/28 05:26 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/28 00:04 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/27 21:03 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/27 20:57 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/27 16:20 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/22 15:14 linux-6.1.y 3a8358583626 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/02/22 05:17 linux-6.1.y 3a8358583626 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/01/13 00:59 linux-6.1.y c63962be84ef 6dbc6a9b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2024/11/09 04:56 linux-6.1.y d7039b844a1c 6b856513 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2024/08/20 08:16 linux-6.1.y ee5e09825b81 9f0ab3fb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in udf_truncate_extents
2025/11/15 13:28 linux-6.1.y f6e38ae624cf f7988ea4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/08/31 23:07 linux-6.1.y f89b6e15694c 807a3b61 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/08/27 17:09 linux-6.1.y 0bc96de781b4 e12e5ba4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/07/21 06:49 linux-6.1.y 3369c6df2fae 7117feec .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/06/15 12:30 linux-6.1.y 58485ff1a74f 5f4b362d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/06/12 05:12 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/06/12 03:42 linux-6.1.y 58485ff1a74f 98683f8f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2025/04/10 20:55 linux-6.1.y 420102835862 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2024/11/25 09:29 linux-6.1.y e4d90d63d385 68da6d95 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2024/10/21 17:33 linux-6.1.y 54d90d17e8ce f1e4447c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2024/10/19 01:45 linux-6.1.y 54d90d17e8ce cd6fc0a3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
2024/10/11 09:42 linux-6.1.y aa4cd140bba5 cd942402 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in udf_truncate_extents
* Struck through repros no longer work on HEAD.