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WARNING in __udf_add_aext

Status: upstream: reported C repro on 2023/10/08 20:16
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+99e246db59b583c8f706@syzkaller.appspotmail.com
First crash: 648d, last: 6d14h
Fix commit to backport (bisect log) :
tree: upstream
commit c2efd13a2ed4f29bf9ef14ac2fbb7474084655f8
Author: Jan Kara <jack@suse.cz>
Date: Wed Jan 25 16:56:06 2023 +0000

  udf: Limit file size to 4TB

[report pending]
  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/10/08 linux-6.1.y (ToT) ecda77b46871 C [report] WARNING in __udf_add_aext
2023/10/08 upstream (ToT) 37faf07bf90a C Didn't crash
▶ ▼ Similar bugs (6)
Kernel Title Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 WARNING in __udf_add_aext origin:upstream -1 C done 120 1d03h 697d 0/3 upstream: reported C repro on 2023/08/20 05:08
linux-4.14 WARNING in __udf_add_aext udf -1 C 3 868d 1245d 0/1 upstream: reported C repro on 2022/02/18 06:47
upstream WARNING in __udf_add_aext (3) udf -1 C error 1201 5h01m 465d 0/29 upstream: reported C repro on 2024/04/08 08:26
linux-4.19 WARNING in __udf_add_aext udf -1 C error 20 879d 1280d 0/1 upstream: reported C repro on 2022/01/14 21:09
upstream WARNING in __udf_add_aext udf -1 C error 170 773d 1011d 22/29 fixed on 2023/06/08 14:41
upstream WARNING in __udf_add_aext (2) udf -1 syz error done 6 584d 765d 25/29 fixed on 2024/01/30 15:47
▶ ▼ Fix bisection attempts (1)
Created Duration User Patch Repo Result
2023/10/25 20:19 3h58m fix candidate upstream OK (1) job log

Sample crash report:
loop0: detected capacity change from 0 to 2048
UDF-fs: INFO Mounting volume 'LinuxUDF', timestamp 2022/11/22 14:59 (1000)
loop0: detected capacity change from 2048 to 64
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4245 at fs/udf/inode.c:1928 __udf_add_aext+0x564/0x6f0
Modules linked in:
CPU: 1 PID: 4245 Comm: syz-executor184 Not tainted 6.1.131-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025
RIP: 0010:__udf_add_aext+0x564/0x6f0 fs/udf/inode.c:1927
Code: c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 c4 da 81 fe 0f 0b e9 ed fb ff ff e8 b8 da 81 fe 0f 0b e9 5c fc ff ff e8 ac da 81 fe <0f> 0b e9 4f fd ff ff 44 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c d1 fa
RSP: 0018:ffffc90003d273f8 EFLAGS: 00010293
RAX: ffffffff8308cf14 RBX: 0000000000000150 RCX: ffff8880197e0000
RDX: 0000000000000000 RSI: 0000000000000150 RDI: ffffffffffffff68
RBP: 00000000bffffe00 R08: ffffffff8308cc5c R09: ffffffff8308ca12
R10: 0000000000000002 R11: ffff8880197e0000 R12: ffffc90003d27620
R13: ffffffffffffff68 R14: dffffc0000000000 R15: 0000000000000010
FS:  0000555587a3d380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000562884783b28 CR3: 0000000020b80000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_add_aext fs/udf/inode.c:1989 [inline]
 udf_insert_aext fs/udf/inode.c:2160 [inline]
 udf_update_extents fs/udf/inode.c:1060 [inline]
 inode_getblk fs/udf/inode.c:776 [inline]
 udf_get_block+0x3cc7/0x5370 fs/udf/inode.c:359
 __block_write_begin_int+0x544/0x1a30 fs/buffer.c:1991
 __block_write_begin fs/buffer.c:2041 [inline]
 block_write_begin+0x98/0x1f0 fs/buffer.c:2102
 udf_write_begin+0x2d/0x60 fs/udf/inode.c:212
 generic_perform_write+0x2fc/0x5e0 mm/filemap.c:3845
 __generic_file_write_iter+0x176/0x400 mm/filemap.c:3973
 udf_file_write_iter+0x291/0x670 fs/udf/file.c:164
 call_write_iter include/linux/fs.h:2265 [inline]
 new_sync_write fs/read_write.c:491 [inline]
 vfs_write+0x857/0xbc0 fs/read_write.c:584
 ksys_write+0x19c/0x2c0 fs/read_write.c:637
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fa4e695a939
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 17 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:00007fffa5d5dd18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fffa5d5dee8 RCX: 00007fa4e695a939
RDX: 0000000000000050 RSI: 0000400000000140 RDI: 0000000000000004
RBP: 00007fa4e69ce610 R08: 00007fffa5d5dee8 R09: 00007fffa5d5dee8
R10: 00007fffa5d5dee8 R11: 0000000000000246 R12: 0000000000000001
R13: 00007fffa5d5ded8 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (119):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/03/15 05:41 linux-6.1.y 344a09659766 e2826670 .config console log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/04/03 09:08 linux-6.1.y e5cd595e23c1 7925100d .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2023/10/08 20:15 linux-6.1.y ecda77b46871 5e837c76 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/11/20 23:02 linux-6.1.y b67dc5c9ade9 4fca1650 .config console log report syz / log [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
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_add_aext
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_add_aext
2025/05/26 04:53 linux-6.1.y da3c5173c55f 2d4582d0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/05/13 21:43 linux-6.1.y 02b72ccb5f9d 7344edeb .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/05/09 13:26 linux-6.1.y 02b72ccb5f9d bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/05/09 07:10 linux-6.1.y ac7079a42ea5 bb813bcc .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/05/01 19:19 linux-6.1.y 535ec20c5027 51b137cd .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/29 02:13 linux-6.1.y 535ec20c5027 aeb6ec69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/24 11:47 linux-6.1.y 420102835862 9882047a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/21 05:34 linux-6.1.y 420102835862 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/17 16:34 linux-6.1.y 420102835862 229db4cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/12 00:17 linux-6.1.y 420102835862 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/10 23:46 linux-6.1.y 420102835862 1ef3ab4d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/04/10 02:50 linux-6.1.y 3dfebb87d7eb 988b336c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/03/15 04:59 linux-6.1.y 344a09659766 e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/02/28 07:14 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/02/27 16:13 linux-6.1.y 3a8358583626 6a8fcbc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/02/24 08:42 linux-6.1.y 3a8358583626 d34966d1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/02/19 07:40 linux-6.1.y 0cbb5f65e52f 9a14138f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/02/18 20:26 linux-6.1.y 0cbb5f65e52f c37c7249 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/01/07 22:41 linux-6.1.y 7dc732d24ff7 f3558dbf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/01/02 10:09 linux-6.1.y 563edd786f0a d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/12/30 10:09 linux-6.1.y 563edd786f0a d3ccff63 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/10/31 22:19 linux-6.1.y 7ec6f9fa3d97 96eb609f .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/10/28 02:04 linux-6.1.y 7ec6f9fa3d97 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/10/26 21:36 linux-6.1.y 7ec6f9fa3d97 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/10/26 16:41 linux-6.1.y 7ec6f9fa3d97 65e8686b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/10/07 04:44 linux-6.1.y aa4cd140bba5 d7906eff .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/09/13 19:41 linux-6.1.y 5f55cad62cc9 b58f933c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/09/04 11:09 linux-6.1.y 311d8503ef9f 9d47f20a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/08/01 20:24 linux-6.1.y c1cec4dad96b 1e9c4cf3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/07/29 19:39 linux-6.1.y c1cec4dad96b 5187fc86 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/07/12 07:46 linux-6.1.y 266ee8e06d5b eaeb5c15 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/07/07 16:32 linux-6.1.y 7753af06eebf 2a40360c .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/07/02 18:59 linux-6.1.y 99e6a620de00 07f0a0a0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/07/01 06:59 linux-6.1.y 99e6a620de00 757f06b1 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/06/24 11:29 linux-6.1.y eb44d83053d6 edc5149a .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/06/12 22:35 linux-6.1.y ae9f2a70d69e f815599d .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/06/11 13:19 linux-6.1.y 88690811da69 b7d9eb04 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/06/06 19:12 linux-6.1.y 88690811da69 121701b6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/06/05 20:36 linux-6.1.y 88690811da69 5aa1a7c9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/06/04 06:07 linux-6.1.y 88690811da69 a1feae05 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2024/05/28 09:17 linux-6.1.y 88690811da69 f550015e .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan WARNING in __udf_add_aext
2025/07/11 13:01 linux-6.1.y dfc486ec9cce 3cda49cf .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
2025/05/27 08:20 linux-6.1.y da3c5173c55f 874a1386 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
2025/03/05 15:01 linux-6.1.y 3a8358583626 60f5d8d9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
2025/02/11 11:22 linux-6.1.y 0cbb5f65e52f 43f51a00 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
2024/11/20 17:56 linux-6.1.y b67dc5c9ade9 4fca1650 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
2024/08/01 18:57 linux-6.1.y c1cec4dad96b 1e9c4cf3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-6-1-kasan-arm64 WARNING in __udf_add_aext
* Struck through repros no longer work on HEAD.