WARNING: locking bug in ext4_xattr_inode_update

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
linux-4.19	WARNING: locking bug in ext4_xattr_inode_update_ref ext4	C		error	2	123d	127d	0/1	upstream: reported C repro on 2023/01/21 20:53
upstream	WARNING: locking bug in ext4_xattr_inode_update_ref ext4	C	error		4	10d	137d	0/24	upstream: reported C repro on 2023/01/12 00:36

Created	Duration	User	Patch	Repo	Result
2023/02/21 23:03	24m	bisect fix		linux-4.14.y	job log (0) log

Created

Duration

User

Patch

Repo

Result

2023/02/21 23:03

24m

bisect fix

linux-4.14.y

job log (0) log

------------[ cut here ]------------ WARNING: CPU: 0 PID: 20194 at kernel/locking/lockdep.c:722 look_up_lock_class kernel/locking/lockdep.c:689 [inline] WARNING: CPU: 0 PID: 20194 at kernel/locking/lockdep.c:722 register_lock_class+0x85c/0x1180 kernel/locking/lockdep.c:756 Kernel panic - not syncing: panic_on_warn set ... CPU: 0 PID: 20194 Comm: syz-executor104 Not tainted 4.14.303-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/12/2023 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0x1b2/0x281 lib/dump_stack.c:58 panic+0x1f9/0x42d kernel/panic.c:183 __warn.cold+0x20/0x44 kernel/panic.c:547 report_bug+0x208/0x250 lib/bug.c:183 fixup_bug arch/x86/kernel/traps.c:177 [inline] fixup_bug arch/x86/kernel/traps.c:172 [inline] do_error_trap+0x195/0x2d0 arch/x86/kernel/traps.c:295 invalid_op+0x1b/0x40 arch/x86/entry/entry_64.S:967 RIP: 0010:look_up_lock_class kernel/locking/lockdep.c:722 [inline] RIP: 0010:register_lock_class+0x85c/0x1180 kernel/locking/lockdep.c:756 RSP: 0018:ffff88809241f2c0 EFLAGS: 00010083 RAX: dffffc0000000000 RBX: ffffffff87933180 RCX: 0000000000000001 RDX: 1ffff11011cc2159 RSI: 0000000000000002 RDI: ffff88808e610ac8 RBP: ffffffff8907d290 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: ffff8880b28004c0 R12: ffffffff8bed0dc0 R13: ffff88808e610ab0 R14: 0000000000000000 R15: ffffffff8ba40f30 __lock_acquire+0x167/0x3f20 kernel/locking/lockdep.c:3378 lock_acquire+0x170/0x3f0 kernel/locking/lockdep.c:3998 down_write+0x34/0x90 kernel/locking/rwsem.c:54 inode_lock include/linux/fs.h:719 [inline] ext4_xattr_inode_update_ref+0xe6/0x4d0 fs/ext4/xattr.c:1027 ext4_xattr_inode_dec_ref fs/ext4/xattr.c:1096 [inline] ext4_xattr_block_set+0x275/0x2a60 fs/ext4/xattr.c:2147 ext4_xattr_set_handle+0x881/0xda0 fs/ext4/xattr.c:2411 ext4_xattr_set+0x118/0x230 fs/ext4/xattr.c:2511 __vfs_setxattr+0xdc/0x130 fs/xattr.c:150 __vfs_setxattr_noperm+0xfd/0x3d0 fs/xattr.c:181 __vfs_setxattr_locked+0x14d/0x250 fs/xattr.c:239 vfs_setxattr+0xcf/0x230 fs/xattr.c:256 setxattr+0x1a9/0x300 fs/xattr.c:523 path_setxattr+0x118/0x130 fs/xattr.c:542 SYSC_setxattr fs/xattr.c:557 [inline] SyS_setxattr+0x36/0x50 fs/xattr.c:553 do_syscall_64+0x1d5/0x640 arch/x86/entry/common.c:292 entry_SYSCALL_64_after_hwframe+0x5e/0xd3 RIP: 0033:0x7f838e165289 RSP: 002b:00007f8385d302f8 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f838e165289 RDX: 00000000200005c0 RSI: 0000000020000180 RDI: 00000000200000c0 RBP: 00007f838e1e97b8 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000002000 R11: 0000000000000246 R12: 00007f838e1e97b0 R13: 0000000020000a00 R14: 0030656c69662f2e R15: 2f30656c69662f2e Kernel Offset: disabled Rebooting in 86400 seconds..

Crashes (2):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	Syz repro	C repro	VM info	Assets	Manager	Title
2023/01/22 13:41	linux-4.14.y	97205fccccdc	cc0f9968	.config	console log	report	syz	C		[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-4-14	WARNING: locking bug in ext4_xattr_inode_update_ref
2023/01/16 15:55	linux-4.14.y	c4215ee4771b	a63719e7	.config	console log	report	syz			[disk image] [vmlinux] [kernel image] [mounted in repro]	ci2-linux-4-14	WARNING: locking bug in ext4_xattr_inode_update_ref

Crashes (2):