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WARNING in __udf_add_aext

Status: upstream: reported C repro on 2023/08/20 05:08
Bug presence: origin:lts-only
[Documentation on labels]
Reported-by: syzbot+6a9661c8887dbe7bd474@syzkaller.appspotmail.com
First crash: 256d, last: 2d04h
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

  
Fix bisection: the issue occurs on the latest tested release (bisect log)
Crash: WARNING in __udf_add_aext (log)
Repro: C syz .config
  
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2023/08/20 linux-5.15.y (ToT) f6f7927ac664 C [report] WARNING in __udf_add_aext
2023/08/20 upstream (ToT) b320441c04c9 C Didn't crash
▶ ▼ Similar bugs (6)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-4.14 WARNING in __udf_add_aext udf C 3 426d 804d 0/1 upstream: reported C repro on 2022/02/18 06:47
upstream WARNING in __udf_add_aext (3) udf C 68 21h46m 24d 0/26 upstream: reported C repro on 2024/04/08 08:26
linux-4.19 WARNING in __udf_add_aext udf C error 20 437d 838d 0/1 upstream: reported C repro on 2022/01/14 21:09
upstream WARNING in __udf_add_aext udf C error 170 332d 569d 22/26 fixed on 2023/06/08 14:41
upstream WARNING in __udf_add_aext (2) udf syz error done 6 143d 324d 26/26 fixed on 2024/01/30 15:47
linux-6.1 WARNING in __udf_add_aext origin:lts-only C done 19 3d19h 206d 0/3 upstream: reported C repro on 2023/10/08 20:16
▶ ▼ Fix bisection attempts (4)
Created Duration User Patch Repo Result
2024/01/03 14:29 4h30m fix candidate upstream job log (1)
2023/12/12 18:51 1h09m bisect fix linux-5.15.y job log (0) log
2023/11/11 17:27 50m bisect fix linux-5.15.y job log (0) log
2023/10/10 07:16 1h11m bisect fix linux-5.15.y job log (0) log

Sample crash report:
loop0: detected capacity change from 0 to 2048
UDF-fs: error (device loop0): udf_read_tagged: tag checksum failed, block 99: 0x27 != 0x4d
------------[ cut here ]------------
WARNING: CPU: 0 PID: 3500 at fs/udf/inode.c:2025 __udf_add_aext+0x54c/0x6f0
Modules linked in:
CPU: 0 PID: 3500 Comm: syz-executor106 Not tainted 5.15.155-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
RIP: 0010:__udf_add_aext+0x54c/0x6f0 fs/udf/inode.c:2024
Code: 4c 89 e7 e8 96 ff ef fe 49 8b 3c 24 4c 89 fe e8 ba 65 0b ff 31 c0 48 83 c4 30 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 74 3c a6 fe <0f> 0b e9 ed fb ff ff e8 68 3c a6 fe 0f 0b e9 5c fc ff ff e8 5c 3c
RSP: 0018:ffffc90002b97118 EFLAGS: 00010293
RAX: ffffffff82da206c RBX: 1ffff92000572ee1 RCX: ffff888078941dc0
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000000001d0
RBP: 00000000000001d0 R08: ffffffff82da1c52 R09: ffffffff82da1b82
R10: 0000000000000002 R11: ffff888078941dc0 R12: ffffc90002b97700
R13: 0000000000000000 R14: dffffc0000000000 R15: ffffc90002b97708
FS:  0000555556a0d380(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc167fef78 CR3: 00000000198f8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 udf_setup_indirect_aext+0x6bc/0x980 fs/udf/inode.c:1990
 udf_add_aext fs/udf/inode.c:2077 [inline]
 udf_do_extend_file+0x6df/0x1140 fs/udf/inode.c:562
 inode_getblk fs/udf/inode.c:798 [inline]
 udf_get_block+0x1727/0x5360 fs/udf/inode.c:448
 __block_write_begin_int+0x60b/0x1650 fs/buffer.c:2012
 __block_write_begin fs/buffer.c:2062 [inline]
 block_write_begin+0x4f/0xc0 fs/buffer.c:2122
 udf_write_begin+0x36/0x70 fs/udf/inode.c:212
 generic_perform_write+0x2bf/0x5b0 mm/filemap.c:3785
 __generic_file_write_iter+0x243/0x4f0 mm/filemap.c:3912
 udf_file_write_iter+0x28d/0x530 fs/udf/file.c:163
 call_write_iter include/linux/fs.h:2172 [inline]
 new_sync_write fs/read_write.c:507 [inline]
 vfs_write+0xacf/0xe50 fs/read_write.c:594
 ksys_pwrite64 fs/read_write.c:701 [inline]
 __do_sys_pwrite64 fs/read_write.c:711 [inline]
 __se_sys_pwrite64 fs/read_write.c:708 [inline]
 __x64_sys_pwrite64+0x1a9/0x230 fs/read_write.c:708
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7f028485ca39
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:00007ffda4a843c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000012
RAX: ffffffffffffffda RBX: 67726f663d646975 RCX: 00007f028485ca39
RDX: 0000000000000001 RSI: 0000000020000000 RDI: 0000000000000004
RBP: 00007f02848d0610 R08: 0000000000000000 R09: 00007ffda4a84598
R10: 000004010000bffd R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffda4a84588 R14: 0000000000000001 R15: 0000000000000001
 </TASK>

Crashes (23):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/04/14 04:06 linux-5.15.y fa3df276cd36 c8349e48 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2023/08/20 05:08 linux-5.15.y f6f7927ac664 d216d8a0 .config console log report syz C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/30 09:57 linux-5.15.y b925f60c6ee7 f10afd69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/30 09:04 linux-5.15.y b925f60c6ee7 f10afd69 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/29 16:09 linux-5.15.y b925f60c6ee7 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/29 14:44 linux-5.15.y b925f60c6ee7 27e33c58 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/29 05:35 linux-5.15.y b925f60c6ee7 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/28 18:43 linux-5.15.y b925f60c6ee7 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/27 09:20 linux-5.15.y c52b9710c83d 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/25 15:59 linux-5.15.y c52b9710c83d 8bdc0f22 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/24 10:26 linux-5.15.y c52b9710c83d 21339d7b .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/22 15:12 linux-5.15.y c52b9710c83d 36c961ad .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/22 04:19 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/22 01:05 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/21 15:17 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/21 12:39 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/20 15:41 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/20 07:03 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/19 11:46 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/19 10:18 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/14 03:34 linux-5.15.y fa3df276cd36 c8349e48 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan WARNING in __udf_add_aext
2024/04/27 08:54 linux-5.15.y c52b9710c83d 07b455f9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __udf_add_aext
2024/04/19 05:53 linux-5.15.y c52b9710c83d af24b050 .config console log report info [disk image] [vmlinux] [kernel image] ci2-linux-5-15-kasan-arm64 WARNING in __udf_add_aext
* Struck through repros no longer work on HEAD.