UBSAN: array-index-out-of-bounds in f2fs

Date	Name	Commit	Repro	Result
2023/08/30	upstream (ToT)	d68b4b6f307d	C	[report] UBSAN: array-index-out-of-bounds in f2fs_iget

Date

Name

Commit

Repro

Result

2023/08/30

upstream (ToT)

d68b4b6f307d

[report] UBSAN: array-index-out-of-bounds in f2fs_iget

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	UBSAN: array-index-out-of-bounds in f2fs_iget f2fs	C	done		6	246d	291d	23/26	fixed on 2023/10/12 12:48
linux-5.15	KASAN: use-after-free Read in f2fs_iget origin:upstream	C			2	22h54m	23h49m	0/3	upstream: reported C repro on 2024/05/05 12:48

F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop0): invalid crc value F2FS-fs (loop0): Found nat_bits in checkpoint ================================================================================ UBSAN: array-index-out-of-bounds in fs/f2fs/f2fs.h:3257:19 index 1409 is out of range for type '__le32[923]' (aka 'unsigned int[923]') CPU: 1 PID: 4219 Comm: syz-executor128 Not tainted 6.1.46-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282 inline_data_addr fs/f2fs/f2fs.h:3257 [inline] __recover_inline_status fs/f2fs/inode.c:111 [inline] do_read_inode fs/f2fs/inode.c:402 [inline] f2fs_iget+0x43a0/0x4938 fs/f2fs/inode.c:519 f2fs_fill_super+0x4d88/0x6338 fs/f2fs/super.c:4356 mount_bdev+0x274/0x370 fs/super.c:1432 f2fs_mount+0x44/0x58 fs/f2fs/super.c:4595 legacy_get_tree+0xd4/0x16c fs/fs_context.c:611 vfs_get_tree+0x90/0x274 fs/super.c:1562 do_new_mount+0x25c/0x8c4 fs/namespace.c:3040 path_mount+0x590/0xe58 fs/namespace.c:3370 do_mount fs/namespace.c:3383 [inline] __do_sys_mount fs/namespace.c:3591 [inline] __se_sys_mount fs/namespace.c:3568 [inline] __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3568 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:581 ================================================================================ F2FS-fs (loop0): sanity_check_inode: inode (ino=3) is with extra_attr, but extra_attr feature is off F2FS-fs (loop0): Failed to read root inode

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2023/08/20 21:19	linux-6.1.y	6c44e13dc284	d216d8a0	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-6-1-kasan-arm64	UBSAN: array-index-out-of-bounds in f2fs_iget

Crashes (1):

Assets (help?)