syzbot


UBSAN: array-index-out-of-bounds in xtTruncate

Status: auto-obsoleted due to no activity on 2023/09/10 20:47
Subsystems: jfs
[Documentation on labels]
Reported-by: syzbot+75c177aa1291e7fe423d@syzkaller.appspotmail.com
First crash: 561d, last: 356d
Cause bisection: failed (error log, bisect log)
  
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] UBSAN: array-index-out-of-bounds in xtTruncate 0 (2) 2022/12/07 18:47
Similar bugs (2)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
linux-5.15 UBSAN: array-index-out-of-bounds in xtTruncate 1 155d 155d 0/3 auto-obsoleted due to no activity on 2024/03/29 17:24
linux-6.1 UBSAN: array-index-out-of-bounds in xtTruncate 2 170d 194d 0/3 auto-obsoleted due to no activity on 2024/03/15 03:21
Last patch testing requests (1)
Created Duration User Patch Repo Result
2023/08/11 21:25 32m retest repro upstream OK log
Fix bisection attempts (3)
Created Duration User Patch Repo Result
2023/06/02 19:49 57m bisect fix upstream job log (0) log
2023/04/17 13:45 1h17m bisect fix upstream job log (0) log
2023/02/22 22:51 53m bisect fix upstream job log (0) log

Sample crash report:
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_xtree.c:2304:9
index 19 is out of range for type 'xad_t [18]'
CPU: 1 PID: 4024 Comm: syz-executor.2 Not tainted 6.1.0-rc8-syzkaller-00014-g8ed710da2873 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1b1/0x28e lib/dump_stack.c:106
 ubsan_epilogue lib/ubsan.c:151 [inline]
 __ubsan_handle_out_of_bounds+0xdb/0x130 lib/ubsan.c:283
 xtTruncate+0x2778/0x32d0 fs/jfs/jfs_xtree.c:2304
 jfs_truncate_nolock+0x192/0x390 fs/jfs/inode.c:393
 jfs_truncate+0xc6/0x140 fs/jfs/inode.c:417
 jfs_setattr+0x59f/0x7d0 fs/jfs/file.c:119
 notify_change+0xe38/0x10f0 fs/attr.c:420
 do_truncate+0x1fb/0x2e0 fs/open.c:65
 handle_truncate fs/namei.c:3216 [inline]
 do_open fs/namei.c:3561 [inline]
 path_openat+0x2770/0x2df0 fs/namei.c:3714
 do_filp_open+0x264/0x4f0 fs/namei.c:3741
 do_sys_openat2+0x124/0x4e0 fs/open.c:1310
 do_sys_open fs/open.c:1326 [inline]
 __do_sys_open fs/open.c:1334 [inline]
 __se_sys_open fs/open.c:1330 [inline]
 __x64_sys_open+0x221/0x270 fs/open.c:1330
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fad9288c0d9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 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:00007fad93556168 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fad929ac1f0 RCX: 00007fad9288c0d9
RDX: 0000000000000000 RSI: 000000000014d27e RDI: 0000000020000180
RBP: 00007fad928e7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcbcc0bcff R14: 00007fad93556300 R15: 0000000000022000
 </TASK>
================================================================================

Crashes (5):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2022/12/07 18:47 upstream 8ed710da2873 d88f3abb .config console log report syz [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-upstream-fs UBSAN: array-index-out-of-bounds in xtTruncate
2023/03/18 13:44 upstream 478a351ce0d6 7939252e .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in xtTruncate
2023/01/21 09:22 upstream edc00350d205 cc0f9968 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in xtTruncate
2022/11/19 09:14 upstream ab290eaddc4c 5bb70014 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in xtTruncate
2022/11/10 03:26 upstream f67dd6ce0723 b2488a87 .config console log report info [disk image] [vmlinux] [kernel image] ci2-upstream-fs UBSAN: array-index-out-of-bounds in xtTruncate
* Struck through repros no longer work on HEAD.