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

Date	Name	Commit	Repro	Result
2024/10/15	upstream (ToT)	eca631b8fe80	C	Failed due to an error; will retry later

Date

Name

Commit

Repro

Result

2024/10/15

upstream (ToT)

eca631b8fe80

Failed due to an error; will retry later

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-6.1	UBSAN: array-index-out-of-bounds in dbSplit				5	15d	15d	0/3	upstream: reported on 2024/10/07 10:48
upstream	UBSAN: array-index-out-of-bounds in dbSplit jfs	C	inconclusive		31	40d	88d	28/28	fixed on 2024/10/22 11:57

loop0: detected capacity change from 0 to 32768 loop0: detected capacity change from 32768 to 32745 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2696:27 index 4294967295 is out of range for type 's8[1365]' (aka 'signed char[1365]') CPU: 1 PID: 3578 Comm: syz-executor402 Not tainted 5.15.167-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1e3/0x2d0 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0x118/0x140 lib/ubsan.c:282 dbSplit+0x1fd/0x220 fs/jfs/jfs_dmap.c:2696 dbAllocBits+0x4e5/0x9a0 fs/jfs/jfs_dmap.c:2259 dbAllocDmap fs/jfs/jfs_dmap.c:2100 [inline] dbAllocDmapLev+0x24c/0x490 fs/jfs/jfs_dmap.c:2054 dbAllocCtl+0x113/0x920 fs/jfs/jfs_dmap.c:1891 dbAllocAG+0x28b/0x10b0 fs/jfs/jfs_dmap.c:1432 dbAlloc+0x654/0xc90 fs/jfs/jfs_dmap.c:888 diNewIAG fs/jfs/jfs_imap.c:2510 [inline] diAllocExt fs/jfs/jfs_imap.c:1905 [inline] diAllocAG+0xa95/0x1e50 fs/jfs/jfs_imap.c:1669 diAlloc+0x1cf/0x1750 fs/jfs/jfs_imap.c:1590 ialloc+0x8b/0x970 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x1c1/0xbb0 fs/jfs/namei.c:225 vfs_mkdir+0x3b6/0x590 fs/namei.c:4065 do_mkdirat+0x260/0x520 fs/namei.c:4090 __do_sys_mkdirat fs/namei.c:4105 [inline] __se_sys_mkdirat fs/namei.c:4103 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4103 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3b/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f3b31fe0c89 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 1f 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fff8a9f7298 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00007f3b31fe0c89 RDX: 0000000000000000 RSI: 00000000200005c0 RDI: 00000000ffffff9c RBP: 00007f3b320674c8 R08: 00007fff8a9f6dc0 R09: 00007fff8a9f6dc0 R10: 00007fff8a9f6dc0 R11: 0000000000000246 R12: 00007fff8a9f7310 R13: 00007fff8a9f72d0 R14: 0000000000000003 R15: 0000000000000000 </TASK> ================================================================================

Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets (help?)	Manager	Title
2024/10/07 03:12	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	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/15 06:56	linux-5.15.y	3a5928702e71	b01b6661	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/15 06:54	linux-5.15.y	3a5928702e71	b01b6661	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/07 05:09	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/07 03:30	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/07 02:26	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/07 02:25	linux-5.15.y	3a5928702e71	d7906eff	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/03 12:38	linux-5.15.y	3a5928702e71	a4c7fd36	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit
2024/10/03 12:38	linux-5.15.y	3a5928702e71	a4c7fd36	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci2-linux-5-15-kasan	UBSAN: array-index-out-of-bounds in dbSplit