------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff0000df419bc0, owner = 0x0, curr 0xffff0000c3153c80, list empty WARNING: CPU: 0 PID: 7633 at kernel/locking/rwsem.c:1370 __up_write kernel/locking/rwsem.c:1369 [inline] WARNING: CPU: 0 PID: 7633 at kernel/locking/rwsem.c:1370 up_write+0x524/0x760 kernel/locking/rwsem.c:1632 Modules linked in: CPU: 0 PID: 7633 Comm: syz-executor.2 Tainted: G W 6.10.0-rc3-syzkaller-gac2193b4b460 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024 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 : ffff80009c217a60 x29: ffff80009c217ae0 x28: ffff0000c3153c80 x27: 1fffe0001be83385 x26: dfff800000000000 x25: 1fffe0001be83379 x24: ffff0000df419c18 x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000c3153c80 x20: ffff0000df419bc0 x19: ffff0000df419bc0 x18: ffff80009c216f60 x17: 0000000000034ffb x16: ffff800080338014 x15: 0000000000000001 x14: 1ffff00011f4c0a6 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : 0cff5ba0dea5dc00 x8 : 0cff5ba0dea5dc00 x7 : ffff80008005fd70 x6 : ffff80008005ff6c x5 : ffff0000f98b1940 x4 : ffff80009c2173d0 x3 : 0000000000000000 x2 : 0000000000000007 x1 : ffff80008b1e00a0 x0 : ffff800124c6a000 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] chmod_common+0x248/0x418 fs/open.c:653 do_fchmodat fs/open.c:698 [inline] __do_sys_fchmodat fs/open.c:717 [inline] __se_sys_fchmodat fs/open.c:714 [inline] __arm64_sys_fchmodat+0x118/0x1dc fs/open.c:714 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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: 3782 hardirqs last enabled at (3781): [] __call_rcu_common kernel/rcu/tree.c:3094 [inline] hardirqs last enabled at (3781): [] call_rcu+0x648/0xb08 kernel/rcu/tree.c:3176 hardirqs last disabled at (3782): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:470 softirqs last enabled at (3728): [] softirq_handle_end kernel/softirq.c:400 [inline] softirqs last enabled at (3728): [] handle_softirqs+0xa3c/0xbfc kernel/softirq.c:582 softirqs last disabled at (3521): [] __do_softirq+0x14/0x20 kernel/softirq.c:588 ---[ end trace 0000000000000000 ]---