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

Title	Replies (including bot)	Last reply
[syzbot] [jfs?] UBSAN: array-index-out-of-bounds in dbAllocDmapLev	0 (1)	2022/12/23 10:23

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[syzbot] [jfs?] UBSAN: array-index-out-of-bounds in dbAllocDmapLev

0 (1)

2022/12/23 10:23

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.14	KASAN: slab-out-of-bounds Read in dbAllocDmapLev jfs	C			1	88d	152d	0/1	upstream: reported C repro on 2022/12/30 09:33
linux-4.19	KASAN: slab-out-of-bounds Read in dbAllocDmapLev jfs	C		error	1	149d	149d	0/1	upstream: reported C repro on 2023/01/02 11:38

linux-4.14

KASAN: slab-out-of-bounds Read in dbAllocDmapLev jfs

88d

152d

0/1

upstream: reported C repro on 2022/12/30 09:33

linux-4.19

KASAN: slab-out-of-bounds Read in dbAllocDmapLev jfs

error

149d

0/1

upstream: reported C repro on 2023/01/02 11:38


Created	Duration	User	Repo	Result
2023/05/03 13:57	1h04m	bisect fix	upstream	job log (0) log
2023/04/02 17:35	41m	bisect fix	upstream	job log (0) log
2023/03/03 16:49	45m	bisect fix	upstream	job log (0) log
2023/02/01 10:24	51m	bisect fix	upstream	job log (0) log

loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:1964:6 index -84 is out of range for type 's8 [341]' CPU: 1 PID: 5074 Comm: syz-executor352 Not tainted 6.1.0-syzkaller-14321-g0a924817d2ed #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x1b1/0x290 lib/dump_stack.c:106 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xe0/0x110 lib/ubsan.c:282 dbAllocDmapLev+0x3c6/0x420 fs/jfs/jfs_dmap.c:1964 dbAllocCtl+0x113/0x970 fs/jfs/jfs_dmap.c:1808 dbAllocAG+0x28b/0x1100 fs/jfs/jfs_dmap.c:1349 dbAlloc+0x661/0xc90 fs/jfs/jfs_dmap.c:873 dtSplitUp fs/jfs/jfs_dtree.c:974 [inline] dtInsert+0xc0e/0x6b80 fs/jfs/jfs_dtree.c:863 jfs_create+0x736/0xb10 fs/jfs/namei.c:137 lookup_open fs/namei.c:3413 [inline] open_last_lookups fs/namei.c:3481 [inline] path_openat+0x12ac/0x2dd0 fs/namei.c:3711 do_filp_open+0x264/0x4f0 fs/namei.c:3741 do_sys_openat2+0x124/0x4e0 fs/open.c:1310 do_sys_open fs/open.c:1326 [inline] __do_sys_openat fs/open.c:1342 [inline] __se_sys_openat fs/open.c:1337 [inline] __x64_sys_openat+0x243/0x290 fs/open.c:1337 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fe62a3507c9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 14 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffe095987c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fe62a3507c9 RDX: 000000000000275a RSI: 0000000020000040 RDI: 00000000ffffff9c RBP: 00007fe62a310060 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fe62a3100f0 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 </TASK> ================================================================================

Crashes (1):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets	Manager	Title
2022/12/22 20:35	upstream	0a924817d2ed	9da18ae8	.config	strace log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-upstream-fs	UBSAN: array-index-out-of-bounds in dbAllocDmapLev

Crashes (1):