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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: 613d, last: 11h23m
▶ ▼ 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 1769 2d15h 1201d 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 323 2d18h 617d 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 465 2d19h 885d 0/3 upstream: reported C repro on 2023/11/19 20:08
▶ ▼ Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/03/03 07:00 11m retest repro android14-6.1 report log

Sample crash report:
loop2: detected capacity change from 0 to 40427
================================================================================
UBSAN: shift-out-of-bounds in fs/f2fs/super.c:942:5
shift exponent 118 is too large for 64-bit type 'unsigned long'
CPU: 0 PID: 362 Comm: syz.2.17 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2026
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+0x2318/0x6e20 fs/f2fs/super.c:4399
 mount_bdev+0x2bc/0x3f0 fs/super.c:1448
 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:1578
 do_new_mount+0x251/0xb30 fs/namespace.c:3081
 path_mount+0x659/0xfc0 fs/namespace.c:3411
 do_mount fs/namespace.c:3424 [inline]
 __do_sys_mount fs/namespace.c:3632 [inline]
 __se_sys_mount+0x320/0x390 fs/namespace.c:3609
 __x64_sys_mount+0xbf/0xd0 fs/namespace.c:3609
 x64_sys_call+0x65d/0x9a0 arch/x86/include/generated/asm/syscalls_64.h:166
 do_syscall_x64 arch/x86/entry/common.c:46 [inline]
 do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:76
 entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7fea48d9da8a
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:00007ffcbf1aa218 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007ffcbf1aa2a0 RCX: 00007fea48d9da8a
RDX: 0000200000000080 RSI: 00002000000000c0 RDI: 00007ffcbf1aa260
RBP: 0000200000000080 R08: 00007ffcbf1aa2a0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00002000000000c0
R13: 00007ffcbf1aa260 R14: 000000000000550d R15: 0000200000000380
 </TASK>
================================================================================
F2FS-fs (loop2): Not support 18014398509481984, larger than 256

Crashes (705):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2026/03/29 12:47 android14-6.1 1c08e57193aa b5ceaad2 .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
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
2026/04/22 21:13 android14-6.1 15ea42c3d32a 4595e353 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/20 12:41 android14-6.1 b90b7c3ecfee 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/20 10:44 android14-6.1 b90b7c3ecfee 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/20 03:58 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/19 23:29 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/19 21:13 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/19 18:03 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/19 10:04 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/19 02:18 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/18 23:42 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/18 14:09 android14-6.1 7790109d9d13 303e2802 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/16 11:20 android14-6.1 98d5d8f31585 df15c5f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/16 03:46 android14-6.1 98d5d8f31585 df15c5f3 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/14 22:27 android14-6.1 5f8c7313b0cf 362d1323 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/13 05:02 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/13 02:35 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/12 22:48 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/12 19:13 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/12 15:22 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/12 11:12 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/12 08:56 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/12 01:22 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/11 20:54 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/11 16:45 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/11 14:03 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/11 05:34 android14-6.1 4a2a41bddacb 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/10 13:23 android14-6.1 b1e92db6a41f 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/10 12:17 android14-6.1 b1e92db6a41f 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/10 08:27 android14-6.1 b1e92db6a41f 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/10 05:17 android14-6.1 b1e92db6a41f 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/09 22:45 android14-6.1 b1e92db6a41f 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/09 15:52 android14-6.1 a0f30a943e32 38c8e246 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/08 07:31 android14-6.1 0a2e62b2578f 2c961e87 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/07 21:45 android14-6.1 f013f2ef1e00 628666c6 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/07 02:52 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/06 21:35 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/06 19:11 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/06 01:35 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/05 17:54 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/04 13:51 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/04 10:46 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/04 09:31 android14-6.1 9ab204675a62 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/03 11:07 android14-6.1 b5e515a3e6a7 4440e7c2 .config console log report info [disk image] [vmlinux] [kernel image] ci2-android-6-1 UBSAN: shift-out-of-bounds in parse_options
2026/04/02 15:32 android14-6.1 b5e515a3e6a7 91bc79b0 .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.