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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: 546d, last: 5m
▶ ▼ 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 Rank 🛈 Repro Cause bisect Fix bisect Count Last Reported Patched Status
android-5-15 UBSAN: shift-out-of-bounds in parse_options ext4 origin:lts -1 C error 1386 now 1133d 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 -1 C inconclusive 290 12h11m 549d 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 -1 C unreliable 448 9d12h 818d 0/3 upstream: reported C repro on 2023/11/19 20:08
▶ ▼ Last patch testing requests (3)
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

Sample crash report:
loop2: detected capacity change from 0 to 40427
F2FS-fs (loop2): fault_injection options not supported
================================================================================
UBSAN: shift-out-of-bounds in fs/f2fs/super.c:942:5
shift exponent 160 is too large for 64-bit type 'unsigned long'
CPU: 0 PID: 373 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
Call Trace:
 <TASK>
 __dump_stack+0x21/0x24 lib/dump_stack.c:88
 dump_stack_lvl+0x110/0x170 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+0x4aa0/0x4ab0 fs/f2fs/super.c:942
 f2fs_fill_super+0x22bf/0x6df0 fs/f2fs/super.c:4397
 mount_bdev+0x2bc/0x3f0 fs/super.c:1445
 f2fs_mount+0x34/0x40 fs/f2fs/super.c:4832
 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:3078
 path_mount+0x659/0xfc0 fs/namespace.c:3408
 do_mount fs/namespace.c:3421 [inline]
 __do_sys_mount fs/namespace.c:3629 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3606
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3606
 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: 0033:0x7f0f30f9bf4a
Code: 48 c7 c2 e8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff c3 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 e8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffeb82d0848 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffeb82d08d0 RCX: 00007f0f30f9bf4a
RDX: 0000200000000000 RSI: 0000200000000040 RDI: 00007ffeb82d0890
RBP: 0000200000000000 R08: 00007ffeb82d08d0 R09: 0000000000000008
R10: 0000000000000008 R11: 0000000000000246 R12: 0000200000000040
R13: 00007ffeb82d0890 R14: 0000000000005529 R15: 00002000000004c0
 </TASK>
================================================================================
F2FS-fs (loop2): Not support 4294967296, larger than 256

Crashes (522):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/01/20 03:47 android14-6.1 37a76cbe8f87 572effc1 .config console 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
2025/12/10 16:41 android14-6.1 0ac176d7ef4d d6526ea3 .config console 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
2025/12/05 01:56 android14-6.1 5ddae867b428 d6526ea3 .config console 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
2025/09/20 17:53 android14-6.1 462bdb2cb1b1 67c37560 .config console 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
2025/06/14 08:02 android14-6.1 6246d345f550 0e8da31f .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
2025/06/11 15:23 android14-6.1 47e5d7e91778 5d7e17ca .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
2025/05/12 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
2026/02/14 22:01 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 21:43 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 17:39 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 15:58 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 12:08 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 09:04 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 03:52 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/14 02:32 android14-6.1 edbe3e111301 1e62d198 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/13 13:36 android14-6.1 edbe3e111301 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/13 12:12 android14-6.1 edbe3e111301 6a673c50 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/12 14:46 android14-6.1 edbe3e111301 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/12 12:23 android14-6.1 edbe3e111301 76a109e2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/11 23:34 android14-6.1 edbe3e111301 75707236 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/11 04:52 android14-6.1 edbe3e111301 441e25b7 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/10 10:54 android14-6.1 c9e2710a7bd0 4ab09a02 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/09 21:00 android14-6.1 c9e2710a7bd0 df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/09 20:22 android14-6.1 c9e2710a7bd0 df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/09 18:04 android14-6.1 c9e2710a7bd0 df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/09 16:54 android14-6.1 c9e2710a7bd0 df949cd9 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/09 09:02 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/09 05:49 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/08 17:46 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/08 15:56 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/08 13:47 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/08 08:05 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/08 06:07 android14-6.1 c9e2710a7bd0 4c131dc4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/06 10:48 android14-6.1 c9e2710a7bd0 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/06 07:59 android14-6.1 c9e2710a7bd0 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/06 05:20 android14-6.1 c9e2710a7bd0 f03c4191 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/05 09:09 android14-6.1 775f23d50ca8 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/04 23:22 android14-6.1 775f23d50ca8 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/04 22:03 android14-6.1 775f23d50ca8 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/04 19:15 android14-6.1 775f23d50ca8 ea10c935 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/04 05:07 android14-6.1 775f23d50ca8 42b01fab .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/03 07:25 android14-6.1 0ddae4186735 d78927dd .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/02 16:08 android14-6.1 478ca7133d0e 018ebef2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/02 11:41 android14-6.1 478ca7133d0e 018ebef2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/02 07:53 android14-6.1 478ca7133d0e 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/02 05:34 android14-6.1 478ca7133d0e 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/02/01 21:27 android14-6.1 478ca7133d0e 6b8752f2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/01/31 22:14 android14-6.1 defbecba6f63 afc0c4d4 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/01/31 05:34 android14-6.1 defbecba6f63 c75a2f6e .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.