UBSAN: shift-out-of-bounds in dbSplit

Title	Replies (including bot)	Last reply
[syzbot] UBSAN: shift-out-of-bounds in dbSplit	0 (1)	2022/10/04 09:00

Title

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[syzbot] UBSAN: shift-out-of-bounds in dbSplit

0 (1)

2022/10/04 09:00


Created	Duration	User	Repo	Result
2023/05/24 23:08	21m	bisect fix	upstream	job log (0) log
2023/04/24 21:29	39m	bisect fix	upstream	job log (0) log
2023/03/25 20:54	34m	bisect fix	upstream	job log (0) log
2023/02/23 10:40	46m	bisect fix	upstream	job log (0) log
2023/01/23 22:23	47m	bisect fix	upstream	job log (0) log
2022/11/07 13:46	35m	bisect fix	upstream	job log (0) log

loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: shift-out-of-bounds in fs/jfs/jfs_dmap.c:2606:11 shift exponent 109 is too large for 32-bit type 'int' CPU: 1 PID: 3606 Comm: syz-executor198 Not tainted 6.0.0-syzkaller-06475-g4c86114194e6 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/22/2022 Call Trace: <TASK> __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106 ubsan_epilogue+0xb/0x50 lib/ubsan.c:151 __ubsan_handle_shift_out_of_bounds.cold+0xb1/0x187 lib/ubsan.c:322 dbSplit.cold+0x19/0x1e fs/jfs/jfs_dmap.c:2606 dbAllocBits+0x14f/0x5f0 fs/jfs/jfs_dmap.c:2158 dbAllocDmap+0x61/0x110 fs/jfs/jfs_dmap.c:1999 dbAllocNear fs/jfs/jfs_dmap.c:1228 [inline] dbAlloc+0x78a/0xa70 fs/jfs/jfs_dmap.c:813 diNewExt+0x724/0x1a10 fs/jfs/jfs_imap.c:2251 diAllocExt fs/jfs/jfs_imap.c:1945 [inline] diAllocAG+0x15f1/0x2200 fs/jfs/jfs_imap.c:1662 diAlloc+0x82d/0x1730 fs/jfs/jfs_imap.c:1583 ialloc+0x89/0xaa0 fs/jfs/jfs_inode.c:56 jfs_mkdir+0x1f0/0xab0 fs/jfs/namei.c:225 vfs_mkdir+0x489/0x740 fs/namei.c:4013 do_mkdirat+0x28c/0x310 fs/namei.c:4038 __do_sys_mkdir fs/namei.c:4058 [inline] __se_sys_mkdir fs/namei.c:4056 [inline] __x64_sys_mkdir+0xf2/0x140 fs/namei.c:4056 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7fc71381edc9 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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:00007ffc4f441de8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fc71381edc9 RDX: 00007fc7137dd2c3 RSI: 0000000000000000 RDI: 00000000200052c0 RBP: 00007fc7137de590 R08: 00005555573bd2c0 R09: 0000000000000000 R10: 00007ffc4f441cb0 R11: 0000000000000246 R12: 00000000f8008000 R13: 0000000000000000 R14: 00080000000000fc R15: 0000000000000000 </TASK> ================================================================================

Crashes (3):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets	Manager	Title
2022/10/08 06:31	upstream	4c86114194e6	0de35f24	.config	strace log	report	syz	C		[disk image] [vmlinux] [mounted in repro]	ci-upstream-kasan-gce-root	UBSAN: shift-out-of-bounds in dbSplit
2022/10/02 17:40	upstream	b357fd1c2afc	feb56351	.config	strace log	report	syz	C		[disk image] [vmlinux]	ci2-upstream-fs	UBSAN: shift-out-of-bounds in dbSplit
2023/02/23 20:54	linux-next	0222aa9800b2	9e2ebb3c	.config	console log	report			info	[disk image] [vmlinux] [kernel image]	ci-upstream-linux-next-kasan-gce-root	UBSAN: shift-out-of-bounds in dbSplit

Crashes (3):