INFO: trying to register non-static key. The code is fine but needs lockdep annotation, or maybe you didn't initialize this object before use? turning off the locking correctness validator. CPU: 1 PID: 14797 Comm: syz-executor.5 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 assign_lock_key+0x134/0x140 kernel/locking/lockdep.c:981 register_lock_class+0xc0/0x2f4 kernel/locking/lockdep.c:1294 __lock_acquire+0xa8/0x2f48 kernel/locking/lockdep.c:4934 lock_acquire+0x164/0x334 kernel/locking/lockdep.c:5668 down_write+0x5c/0x88 kernel/locking/rwsem.c:1562 ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline] ext4_xattr_set_handle+0xcc/0x9bc fs/ext4/xattr.c:2321 ext4_xattr_set+0x104/0x1d4 fs/ext4/xattr.c:2508 ext4_xattr_trusted_set+0x4c/0x64 fs/ext4/xattr_trusted.c:38 __vfs_setxattr+0x28c/0x298 fs/xattr.c:202 __vfs_setxattr_noperm+0xcc/0x320 fs/xattr.c:236 __vfs_setxattr_locked+0x168/0x190 fs/xattr.c:297 vfs_setxattr+0xf4/0x1f4 fs/xattr.c:323 do_setxattr fs/xattr.c:608 [inline] setxattr+0x24c/0x2cc fs/xattr.c:631 path_setxattr+0xd0/0x17c fs/xattr.c:650 __do_sys_setxattr fs/xattr.c:666 [inline] __se_sys_setxattr fs/xattr.c:662 [inline] __arm64_sys_setxattr+0x2c/0x40 fs/xattr.c:662 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON(sem->magic != sem): count = 0x1, magic = 0x0, owner = 0xffff0000e231b400, curr 0xffff0000e231b400, list not empty WARNING: CPU: 0 PID: 14797 at kernel/locking/rwsem.c:1355 __up_write kernel/locking/rwsem.c:1355 [inline] WARNING: CPU: 0 PID: 14797 at kernel/locking/rwsem.c:1355 up_write+0x248/0x2dc kernel/locking/rwsem.c:1615 Modules linked in: CPU: 0 PID: 14797 Comm: syz-executor.5 Not tainted 6.2.0-rc7-syzkaller-17907-g2d3827b3f393 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __up_write kernel/locking/rwsem.c:1355 [inline] pc : up_write+0x248/0x2dc kernel/locking/rwsem.c:1615 lr : __up_write kernel/locking/rwsem.c:1355 [inline] lr : up_write+0x248/0x2dc kernel/locking/rwsem.c:1615 sp : ffff8000140fb7f0 x29: ffff8000140fb810 x28: ffff0000c0587f38 x27: 0000000000000000 x26: ffff80000ce696ef x25: 00000000fffffff4 x24: ffff8000140fb8a8 x23: 0000000000000000 x22: ffff0000c0588190 x21: ffff80000d36c000 x20: 0000000000000000 x19: ffff0000c0587f38 x18: 0000000000000000 x17: 6e69676e45206574 x16: 0000000000000001 x15: 0000000000000000 x14: 0000000000000005 x13: 205d373937343154 x12: 0000000000040000 x11: 000000000003ffff x10: ffff8000197b0000 x9 : aa0e92b68f82f700 x8 : aa0e92b68f82f700 x7 : 545b5d3832343934 x6 : ffff8000081bda54 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff8000140fb378 x1 : 0000000100000000 x0 : 0000000000000086 Call trace: __up_write kernel/locking/rwsem.c:1355 [inline] up_write+0x248/0x2dc kernel/locking/rwsem.c:1615 ext4_write_unlock_xattr fs/ext4/xattr.h:173 [inline] ext4_xattr_set_handle+0x3e4/0x9bc fs/ext4/xattr.c:2444 ext4_xattr_set+0x104/0x1d4 fs/ext4/xattr.c:2508 ext4_xattr_trusted_set+0x4c/0x64 fs/ext4/xattr_trusted.c:38 __vfs_setxattr+0x28c/0x298 fs/xattr.c:202 __vfs_setxattr_noperm+0xcc/0x320 fs/xattr.c:236 __vfs_setxattr_locked+0x168/0x190 fs/xattr.c:297 vfs_setxattr+0xf4/0x1f4 fs/xattr.c:323 do_setxattr fs/xattr.c:608 [inline] setxattr+0x24c/0x2cc fs/xattr.c:631 path_setxattr+0xd0/0x17c fs/xattr.c:650 __do_sys_setxattr fs/xattr.c:666 [inline] __se_sys_setxattr fs/xattr.c:662 [inline] __arm64_sys_setxattr+0x2c/0x40 fs/xattr.c:662 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x64/0x178 arch/arm64/kernel/syscall.c:52 el0_svc_common+0xbc/0x180 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x110 arch/arm64/kernel/syscall.c:193 el0_svc+0x58/0x14c arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 irq event stamp: 2861 hardirqs last enabled at (2861): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline] hardirqs last enabled at (2861): [] _raw_spin_unlock_irqrestore+0x44/0x84 kernel/locking/spinlock.c:194 hardirqs last disabled at (2860): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (2860): [] _raw_spin_lock_irqsave+0x2c/0x88 kernel/locking/spinlock.c:162 softirqs last enabled at (2850): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (2848): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]---