UBSAN: shift-out-of-bounds in ext4_handle

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[syzbot] [ext4?] UBSAN: shift-out-of-bounds in ext4_handle_clustersize	1 (2)	2023/06/29 03:35

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[syzbot] [ext4?] UBSAN: shift-out-of-bounds in ext4_handle_clustersize

1 (2)

2023/06/29 03:35

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	UBSAN: shift-out-of-bounds in ext4_handle_clustersize (2) ext4	C	error	done	3	133d	137d	26/26	fixed on 2024/02/02 11:15
android-6-1	UBSAN: shift-out-of-bounds in ext4_handle_clustersize origin:upstream	C	error		1	18d	136d	0/2	upstream: reported C repro on 2023/12/24 13:33

EXT4-fs (loop4): mounting ext3 file system using the ext4 subsystem ================================================================================ UBSAN: shift-out-of-bounds in fs/ext4/super.c:4409:27 shift exponent 1970238055 is too large for 32-bit type 'int' CPU: 1 PID: 8654 Comm: syz-executor.4 Not tainted 6.4.0-syzkaller-12365-g8689f4f2ea56 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/03/2023 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_shift_out_of_bounds+0x3c3/0x420 lib/ubsan.c:387 ext4_handle_clustersize+0x592/0x5c0 fs/ext4/super.c:4409 __ext4_fill_super fs/ext4/super.c:5287 [inline] ext4_fill_super+0x3a14/0x6ce0 fs/ext4/super.c:5696 get_tree_bdev+0x468/0x6c0 fs/super.c:1318 vfs_get_tree+0x8c/0x270 fs/super.c:1519 do_new_mount+0x28f/0xae0 fs/namespace.c:3335 do_mount fs/namespace.c:3675 [inline] __do_sys_mount fs/namespace.c:3884 [inline] __se_sys_mount+0x2d9/0x3c0 fs/namespace.c:3861 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7ff30748d8ba Code: 48 c7 c2 b8 ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 b8 04 00 00 0f 1f 84 00 00 00 00 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:00007ff308286f88 EFLAGS: 00000202 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 000000000000043e RCX: 00007ff30748d8ba RDX: 0000000020000080 RSI: 0000000020000480 RDI: 00007ff308286fe0 RBP: 00007ff308287020 R08: 00007ff308287020 R09: 00000000c0ed0006 R10: 00000000c0ed0006 R11: 0000000000000202 R12: 0000000020000080 R13: 0000000020000480 R14: 00007ff308286fe0 R15: 0000000020000140 </TASK> ================================================================================

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/07/08 19:24	upstream	8689f4f2ea56	668cb1fa	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	UBSAN: shift-out-of-bounds in ext4_handle_clustersize
2023/06/18 11:56	upstream	1b29d271614a	f3921d4d	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-upstream-fs	UBSAN: shift-out-of-bounds in ext4_handle_clustersize

Crashes (2):

Assets (help?)