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UBSAN: shift-out-of-bounds in parse_options

Status: upstream: reported C repro on 2024/08/17 08:59
Bug presence: origin:lts
[Documentation on labels]
Reported-by: syzbot+561af80c4a21ada6cf3e@syzkaller.appspotmail.com
First crash: 280d, last: 2d20h
▶ ▼ Bug presence (2)
Date Name Commit Repro Result
2024/08/17 lts (merge base) 909ba1f1b414 C [report] UBSAN: shift-out-of-bounds in parse_options
2024/08/17 upstream (ToT) e5fa841af679 C Didn't crash
▶ ▼ Similar bugs (3)
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 UBSAN: shift-out-of-bounds in parse_options ext4 origin:lts C error 451 2d20h 867d 0/2 upstream: reported C repro on 2023/01/08 05:56
linux-6.1 UBSAN: shift-out-of-bounds in parse_options origin:lts-only C error 110 6h04m 284d 0/3 upstream: reported C repro on 2024/08/13 23:52
linux-5.15 UBSAN: shift-out-of-bounds in parse_options origin:lts-only C unreliable 273 3d14h 552d 0/3 upstream: reported C repro on 2023/11/19 20:08
▶ ▼ Last patch testing requests (5)
Created Duration User Patch Repo Result
2025/03/03 07:00 11m retest repro android14-6.1 report log
2025/03/03 07:00 6m retest repro android14-6.1 report log
2025/03/03 07:00 6m retest repro android14-6.1 report log
2025/03/03 07:00 6m retest repro android14-6.1 report log
2025/03/03 07:00 9m retest repro android14-6.1 report log

Sample crash report:
================================================================================
UBSAN: shift-out-of-bounds in fs/f2fs/super.c:919:5
shift exponent 92 is too large for 64-bit type 'unsigned long'
CPU: 1 PID: 290 Comm: syz-executor252 Not tainted 6.1.134-syzkaller-00012-g646380b087a5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0xee/0x150 lib/dump_stack.c:106
 dump_stack+0x15/0x24 lib/dump_stack.c:113
 ubsan_epilogue+0xe/0x40 lib/ubsan.c:151
 __ubsan_handle_shift_out_of_bounds+0x37c/0x400 lib/ubsan.c:321
 parse_options+0x4829/0x4830 fs/f2fs/super.c:919
 f2fs_fill_super+0x2281/0x6c70 fs/f2fs/super.c:4307
 mount_bdev+0x2bc/0x3f0 fs/super.c:1445
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4743
 legacy_get_tree+0xfe/0x1a0 fs/fs_context.c:632
 vfs_get_tree+0x9a/0x270 fs/super.c:1575
 do_new_mount+0x25a/0xa20 fs/namespace.c:3056
 path_mount+0x675/0x1010 fs/namespace.c:3386
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount+0x318/0x380 fs/namespace.c:3584
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3584
 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f5705c47cfa
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007ffe58991ab8 EFLAGS: 00000286 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffe58991ad0 RCX: 00007f5705c47cfa
RDX: 0000200000000140 RSI: 00002000000000c0 RDI: 00007ffe58991ad0
RBP: 00002000000000c0 R08: 00007ffe58991b10 R09: 00000000000054ff
R10: 0000000000000003 R11: 0000000000000286 R12:

Crashes (243):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/05/12 04:22 android14-6.1 646380b087a5 77908e5f .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/05 18:50 android14-6.1 0c1a07d9c284 6ca47dd8 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/05 08:12 android14-6.1 0c1a07d9c284 b0714e37 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/01/25 00:25 android14-6.1 72db89d3d913 1293872d .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/01/22 22:52 android14-6.1 0405a25a6ed7 a44b0418 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/01/21 01:48 android14-6.1 d12538e9da37 6e87cfa2 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2024/11/25 11:15 android14-6.1 226e9f92a06c 68da6d95 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2024/08/17 09:04 android14-6.1 d6a513a78492 dbc93b08 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2024/08/17 08:58 android14-6.1 d6a513a78492 dbc93b08 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2024/08/17 08:52 android14-6.1 d6a513a78492 dbc93b08 .config strace log report syz / log C [disk image] [vmlinux] [kernel image] [mounted in repro] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/22 04:05 android14-6.1 3c6d0251e1fb 0919b50b .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/19 03:48 android14-6.1 a0fa2316cce1 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/19 01:08 android14-6.1 a0fa2316cce1 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/19 00:37 android14-6.1 a0fa2316cce1 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/17 14:38 android14-6.1 a0fa2316cce1 f41472b0 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/12 07:39 android14-6.1 646380b087a5 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/11 20:51 android14-6.1 646380b087a5 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/11 09:06 android14-6.1 646380b087a5 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/10 22:32 android14-6.1 646380b087a5 77908e5f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/05 10:37 android14-6.1 0c1a07d9c284 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/05 08:05 android14-6.1 0c1a07d9c284 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/04 07:02 android14-6.1 0c1a07d9c284 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/04 01:58 android14-6.1 0c1a07d9c284 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/05/03 03:46 android14-6.1 0c1a07d9c284 b0714e37 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/29 20:32 android14-6.1 242f90b45e89 85a5a23f .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/28 03:28 android14-6.1 a4fc1bef0501 c6b4fb39 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/23 16:29 android14-6.1 642656a36791 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/23 07:26 android14-6.1 642656a36791 53a8b9bd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/21 04:13 android14-6.1 bc3d1d352ab6 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/20 10:06 android14-6.1 bc3d1d352ab6 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/19 10:51 android14-6.1 bc3d1d352ab6 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/19 06:04 android14-6.1 bc3d1d352ab6 2a20f901 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/14 16:19 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/14 06:25 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/14 01:09 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/13 21:14 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/13 17:05 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/13 15:37 android14-6.1 19a0fb1d3513 0bd6db41 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/08 14:26 android14-6.1 ca24c52e3c25 a775275d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/04/02 08:26 android14-6.1 3e6e324f5b47 c799dfdd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/29 20:38 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/29 20:38 android14-6.1 c1fd50266bd6 d3999433 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/16 19:55 android14-6.1 33c9d4844afc e2826670 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/13 21:51 android14-6.1 efd0bedd2cb2 44be8b44 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/12 15:02 android14-6.1 9bcabbda673a ee70e6db .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/10 07:09 android14-6.1 44db4837f75e 163f510d .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/05 05:24 android14-6.1 471a10d3af3b c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/05 00:58 android14-6.1 471a10d3af3b c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/04 06:14 android14-6.1 471a10d3af3b c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/03/03 16:24 android14-6.1 471a10d3af3b c3901742 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/02/17 06:46 android14-6.1 ccc915784332 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/02/16 19:52 android14-6.1 ccc915784332 40a34ec9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/02/12 22:58 android14-6.1 c93dcf3b5358 b27c2402 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2025/02/12 17:23 android14-6.1 c93dcf3b5358 b27c2402 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2024/08/17 08:44 android14-6.1 d6a513a78492 dbc93b08 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
* Struck through repros no longer work on HEAD.