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[parent not found: <CAEt2hJ5MpDyGhxVX9OHhiA78xQNWMoKT+qL7SnkDA5tUNsWCDA@mail.gmail.com>]
[parent not found: <12128c3a-3a38-ac09-577f-320e811f421f@gmail.com>]
[parent not found: <526dbcf1-a6ee-54b5-15a4-756979ae2d90@gmail.com>]
* [syzbot] UBSAN: array-index-out-of-bounds in diWrite
@ 2022-10-21  4:45 syzbot
  2024-01-14  7:18 ` [syzbot] [jfs?] " syzbot
  0 siblings, 1 reply; 7+ messages in thread
From: syzbot @ 2022-10-21  4:45 UTC (permalink / raw)
  To: jfs-discussion, linux-kernel, shaggy, syzkaller-bugs

Hello,

syzbot found the following issue on:

HEAD commit:    493ffd6605b2 Merge tag 'ucount-rlimits-cleanups-for-v5.19'..
git tree:       upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1512cd9a880000
kernel config:  https://syzkaller.appspot.com/x/.config?x=d19f5d16783f901
dashboard link: https://syzkaller.appspot.com/bug?extid=c1056fdfe414463fdb33
compiler:       Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro:      https://syzkaller.appspot.com/x/repro.syz?x=12f431d2880000
C reproducer:   https://syzkaller.appspot.com/x/repro.c?x=1208894a880000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/f1ff6481e26f/disk-493ffd66.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/101bd3c7ae47/vmlinux-493ffd66.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/720c16671db9/mount_0.gz

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+c1056fdfe414463fdb33@syzkaller.appspotmail.com

================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:749:4
index 255 is out of range for type 'struct dtslot [128]'
CPU: 1 PID: 3606 Comm: syz-executor322 Not tainted 6.0.0-syzkaller-09423-g493ffd6605b2 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
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
 diWrite+0x1311/0x1f80 fs/jfs/jfs_imap.c:749
 txCommit+0xa2e/0x6d40 fs/jfs/jfs_txnmgr.c:1250
 jfs_mkdir+0x911/0xb00 fs/jfs/namei.c:290
 vfs_mkdir+0x3b3/0x590 fs/namei.c:4013
 do_mkdirat+0x279/0x550 fs/namei.c:4038
 __do_sys_mkdirat fs/namei.c:4053 [inline]
 __se_sys_mkdirat fs/namei.c:4051 [inline]
 __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4051
 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: 0033:0x7f1a977dfe49
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd8f230c48 EFLAGS: 00000246 ORIG_RAX: 0000000000000102
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f1a977dfe49
RDX: 00000000000001ff RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007f1a9779f610 R08: 0000000000000000 R09: 0000000000000000
R10: 00005555566302c0 R11: 0000000000000246 R12: 00000000f8008000
R13: 0000000000000000 R14: 00083878000000fc R15: 0000000000000000
 </TASK>
================================================================================


---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.

syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot can test patches for this issue, for details see:
https://goo.gl/tpsmEJ#testing-patches

^ permalink raw reply	[flat|nested] 7+ messages in thread
end of thread, other threads:[~2024-01-15 14:12 UTC | newest]

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     [not found] <a33a632b-9cb6-3187-53b2-5e3309ea0467@gmail.com>
2023-11-03  3:37 ` [syzbot] [jfs?] UBSAN: array-index-out-of-bounds in diWrite syzbot
     [not found] <CAEt2hJ5MpDyGhxVX9OHhiA78xQNWMoKT+qL7SnkDA5tUNsWCDA@mail.gmail.com>
2023-11-03  7:40 ` syzbot
     [not found] <12128c3a-3a38-ac09-577f-320e811f421f@gmail.com>
2023-11-03  7:26 ` syzbot
     [not found] <526dbcf1-a6ee-54b5-15a4-756979ae2d90@gmail.com>
2023-11-02 20:27 ` syzbot
2022-10-21  4:45 [syzbot] " syzbot
2024-01-14  7:18 ` [syzbot] [jfs?] " syzbot
2024-01-15 13:42   ` Jan Kara
2024-01-15 14:12     ` Christian Brauner

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