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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff0000ef5b3d58, owner = 0x0, curr 0xffff0000cc5a5ac0, list empty
WARNING: CPU: 0 PID: 6807 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline]
WARNING: CPU: 0 PID: 6807 at kernel/locking/rwsem.c:1370 up_write+0x524/0x760 kernel/locking/rwsem.c:1632
Modules linked in:
CPU: 0 PID: 6807 Comm: syz.2.77 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __up_write kernel/locking/rwsem.c:1369 [inline]
pc : up_write+0x524/0x760 kernel/locking/rwsem.c:1632
lr : __up_write kernel/locking/rwsem.c:1369 [inline]
lr : up_write+0x524/0x760 kernel/locking/rwsem.c:1632
sp : ffff8000a07179c0
x29: ffff8000a0717a40 x28: ffff80008f5eb1c0 x27: 1fffe0001deb67b8
x26: dfff800000000000 x25: 1fffe0001deb67ac x24: ffff0000ef5b3db0
x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000cc5a5ac0
x20: ffff0000ef5b3d58 x19: ffff0000ef5b3d58 x18: 1fffe000367a3dde
x17: ffff80008f2dd000 x16: ffff80008032d32c x15: 0000000000000001
x14: 1fffe000367a6a00 x13: 0000000000000000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : ad9951ddd4454000
x8 : ad9951ddd4454000 x7 : ffff8000802a3bb0 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : 0000000000000007 x1 : ffff80008b2c0360 x0 : ffff800124af7000
Call trace:
 __up_write kernel/locking/rwsem.c:1369 [inline]
 up_write+0x524/0x760 kernel/locking/rwsem.c:1632
 inode_unlock include/linux/fs.h:796 [inline]
 chown_common+0x444/0x700 fs/open.c:792
 do_fchownat+0x15c/0x234 fs/open.c:821
 __do_sys_fchownat fs/open.c:836 [inline]
 __se_sys_fchownat fs/open.c:833 [inline]
 __arm64_sys_fchownat+0xb8/0xd4 fs/open.c:833
 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
irq event stamp: 586
hardirqs last  enabled at (585): [<ffff8000802a3c50>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1418 [inline]
hardirqs last  enabled at (585): [<ffff8000802a3c50>] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5162
hardirqs last disabled at (586): [<ffff80008b13d724>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470
softirqs last  enabled at (578): [<ffff8000801e2570>] softirq_handle_end kernel/softirq.c:400 [inline]
softirqs last  enabled at (578): [<ffff8000801e2570>] handle_softirqs+0xa3c/0xbfc kernel/softirq.c:582
softirqs last disabled at (461): [<ffff800080020de8>] __do_softirq+0x14/0x20 kernel/softirq.c:588
---[ end trace 0000000000000000 ]---