syzbot


UBSAN: shift-out-of-bounds in jfs_open

Status: closed as dup on 2022/09/29 01:37
Reported-by: syzbot+027aa1f5f8487ba60a97@syzkaller.appspotmail.com
First crash: 61d, last: 13d
Duplicate of (1):
Title Repro Cause bisect Fix bisect Count Last Reported
UBSAN: shift-out-of-bounds in dbAllocAG C error 10 26d 58d

Sample crash report:
================================================================================
UBSAN: shift-out-of-bounds in fs/jfs/file.c:65:20
shift exponent 8205 is too large for 64-bit type '__u64' (aka 'unsigned long long')
CPU: 1 PID: 3690 Comm: syz-executor342 Not tainted 6.0.0-rc7-syzkaller-00029-g3800a713b607 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
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_shift_out_of_bounds+0x33d/0x3b0 lib/ubsan.c:322
 jfs_open+0x3a2/0x3d0 fs/jfs/file.c:65
 do_dentry_open+0x777/0x1180 fs/open.c:880
 do_open fs/namei.c:3557 [inline]
 path_openat+0x25fc/0x2df0 fs/namei.c:3691
 do_filp_open+0x264/0x4f0 fs/namei.c:3718
 do_sys_openat2+0x124/0x4e0 fs/open.c:1313
 do_sys_open fs/open.c:1329 [inline]
 __do_sys_openat fs/open.c:1345 [inline]
 __se_sys_openat fs/open.c:1340 [inline]
 __x64_sys_openat+0x243/0x290 fs/open.c:1340
 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: 0033:0x7f2044cd6ed9
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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2044c4c278 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f2044d624b0 RCX: 00007f2044cd6ed9
RDX: 0000000000161842 RSI: 000000002000c380 RDI: 00000000ffffff9c
RBP: 00007f2044d2de4c R08: 00007f2044c4c700 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f2044d29108
R13: 0030656c69662f2e R14: 00007f2044c4c400 R15: 00007f2044d624b8
 </TASK>
================================================================================

Crashes (5):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Title
ci2-upstream-fs 2022/09/27 21:49 upstream 3800a713b607 10323ddf .config log report syz C UBSAN: shift-out-of-bounds in jfs_open
ci2-upstream-fs 2022/11/12 19:42 upstream 8f2975c2bb4c f42ee5d8 .config log report info UBSAN: shift-out-of-bounds in jfs_open
ci-upstream-kasan-gce-smack-root 2022/10/12 21:29 upstream 55be6084c8e0 89b5a509 .config log report info UBSAN: shift-out-of-bounds in jfs_open
ci2-upstream-fs 2022/10/12 21:12 upstream 493ffd6605b2 16a9c9e0 .config log report info UBSAN: shift-out-of-bounds in jfs_open
ci2-upstream-fs 2022/09/26 16:53 upstream f76349cf4145 d59ba983 .config log report info UBSAN: shift-out-of-bounds in jfs_open
* Struck through repros no longer work on HEAD.