UBSAN: shift-out-of-bounds in minix

Date	Name	Commit	Repro	Result
2025/08/20	linux-5.15.y (ToT)	c79648372d02	C	[report] UBSAN: shift-out-of-bounds in minix_statfs
2025/08/20	upstream (ToT)	41cd3fd15263	C	Didn't crash

Date

Name

Commit

Repro

Result

2025/08/20

linux-5.15.y (ToT)

c79648372d02

[report] UBSAN: shift-out-of-bounds in minix_statfs

2025/08/20

upstream (ToT)

41cd3fd15263

Didn't crash

Kernel	Title	Rank 🛈	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	UBSAN: shift-out-of-bounds in minix_statfs origin:upstream	-1	C		error	4	213d	294d	0/3	upstream: reported C repro on 2024/11/09 11:46
upstream	UBSAN: shift-out-of-bounds in minix_statfs fs	-1	C	inconclusive	error	67	5d09h	1356d	0/29	upstream: reported C repro on 2021/12/13 07:17

WARNING: The mand mount option has been deprecated and and is ignored by this kernel. Remove the mand option from the mount to silence this warning. ======================================================= ================================================================================ UBSAN: shift-out-of-bounds in fs/minix/inode.c:380:57 shift exponent 768 is too large for 64-bit type 'unsigned long' CPU: 1 PID: 4313 Comm: syz.0.17 Not tainted 5.15.189-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 Call Trace: <TASK> dump_stack_lvl+0x168/0x230 lib/dump_stack.c:106 ubsan_epilogue+0xa/0x30 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds+0x37c/0x400 lib/ubsan.c:321 minix_statfs+0x313/0x340 fs/minix/inode.c:380 statfs_by_dentry fs/statfs.c:66 [inline] vfs_statfs fs/statfs.c:90 [inline] fd_statfs+0x18e/0x390 fs/statfs.c:120 __do_sys_fstatfs fs/statfs.c:216 [inline] __se_sys_fstatfs fs/statfs.c:213 [inline] __x64_sys_fstatfs+0xdd/0x1a0 fs/statfs.c:213 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f673bbd4be9 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffd6f6b15e8 EFLAGS: 00000246 ORIG_RAX: 000000000000008a RAX: ffffffffffffffda RBX: 00007f673bdfbfa0 RCX: 00007f673bbd4be9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000004 RBP: 00007f673bc57e19 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f673bdfbfa0 R14: 00007f673bdfbfa0 R15: 0000000000000002 </TASK> ================================================================================

Crashes (4):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2025/08/18 10:46	linux-5.15.y	c79648372d02	1804e95e	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)]	ci2-linux-5-15-kasan	UBSAN: shift-out-of-bounds in minix_statfs
2025/08/18 09:52	linux-5.15.y	c79648372d02	1804e95e	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)]	ci2-linux-5-15-kasan	UBSAN: shift-out-of-bounds in minix_statfs
2025/08/18 08:52	linux-5.15.y	c79648372d02	1804e95e	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image] [mounted in repro (corrupt fs)]	ci2-linux-5-15-kasan	UBSAN: shift-out-of-bounds in minix_statfs
2025/08/18 07:51	linux-5.15.y	c79648372d02	1804e95e	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: shift-out-of-bounds in minix_statfs

Crashes (4):

Assets (help?)