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

Date	Name	Commit	Repro	Result
2024/04/28	upstream (ToT)	e67572cd2204	C	[report] UBSAN: array-index-out-of-bounds in dtReadFirst

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	UBSAN: array-index-out-of-bounds in dtReadFirst jfs	C	error		129	13h16m	162d	0/28	upstream: reported C repro on 2024/05/01 08:36

upstream

UBSAN: array-index-out-of-bounds in dtReadFirst jfs

error

129

13h16m

162d

0/28

upstream: reported C repro on 2024/05/01 08:36

loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3385:20 index -1 is out of range for type 'struct dtslot[128]' CPU: 0 PID: 4016 Comm: syz-executor349 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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+0x108/0x15c lib/ubsan.c:282 dtReadFirst+0x4bc/0x9bc fs/jfs/jfs_dtree.c:3385 jfs_readdir+0x6f0/0x385c fs/jfs/jfs_dtree.c:3116 iterate_dir+0x1f4/0x4ec __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================================ ERROR: (device loop0): dtReadFirst: btstack overrun ERROR: (device loop0): remounting filesystem as read-only btstack dump: bn = 0, index = 0 bn = 0, index = 0 bn = 0, index = 0 bn = 0, index = 0 bn = 0, index = 0 bn = 0, index = 0 bn = 0, index = 0 bn = 0, index = 0

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/10/05 21:53	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report	syz / log	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst
2024/04/28 13:09	linux-5.15.y	b925f60c6ee7	07b455f9	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst
2024/10/05 21:22	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst
2024/05/27 23:22	linux-5.15.y	c61bd26ae81a	761766e6	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst
2024/05/27 22:08	linux-5.15.y	c61bd26ae81a	761766e6	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst
2024/05/12 13:01	linux-5.15.y	284087d4f7d5	9026e142	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst
2024/04/28 12:31	linux-5.15.y	b925f60c6ee7	07b455f9	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan-arm64	UBSAN: array-index-out-of-bounds in dtReadFirst