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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff0000e10e0e50, owner = 0x0, curr 0xffff0000dd6a9bc0, list empty
WARNING: CPU: 1 PID: 8017 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 1 PID: 8017 at kernel/locking/rwsem.c:1372 up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 1 PID: 8017 Comm: syz.8.661 Tainted: G        W          6.1.121-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __up_write kernel/locking/rwsem.c:1371 [inline]
pc : up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
lr : __up_write kernel/locking/rwsem.c:1371 [inline]
lr : up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
sp : ffff8000221579e0
x29: ffff800022157a70 x28: 1ffff0000442af68 x27: 1fffe0001c21c1d7
x26: dfff800000000000 x25: 1fffe0001c21c1cb x24: ffff0000e10e0ea8
x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000dd6a9bc0
x20: ffff0000e10e0e50 x19: ffff0000e10e0e50 x18: 1fffe000367a0176
x17: ffff800015a8d000 x16: ffff80000830158c x15: ffff0001b3d00bbc
x14: 1ffff00002b520b2 x13: dfff800000000000 x12: 0000000000000003
x11: 0000000000ff0100 x10: 0000000000000003 x9 : 42677b8b26cd4200
x8 : 42677b8b26cd4200 x7 : ffff800008278b0c x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff800022157540 x1 : ffff80001248c5c0 x0 : ffff80019e31d000
Call trace:
 __up_write kernel/locking/rwsem.c:1371 [inline]
 up_write+0x5c4/0x76c kernel/locking/rwsem.c:1626
 inode_unlock include/linux/fs.h:763 [inline]
 unlock_mount+0x1d8/0x244 fs/namespace.c:2325
 do_new_mount_fc fs/namespace.c:2999 [inline]
 do_new_mount+0x700/0x8fc fs/namespace.c:3058
 path_mount+0x590/0xe5c fs/namespace.c:3386
 do_mount fs/namespace.c:3399 [inline]
 __do_sys_mount fs/namespace.c:3607 [inline]
 __se_sys_mount fs/namespace.c:3584 [inline]
 __arm64_sys_mount+0x45c/0x594 fs/namespace.c:3584
 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
 invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52
 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140
 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204
 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637
 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
irq event stamp: 640
hardirqs last  enabled at (639): [<ffff800008278bac>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline]
hardirqs last  enabled at (639): [<ffff800008278bac>] finish_lock_switch+0xbc/0x1e8 kernel/sched/core.c:5000
hardirqs last disabled at (640): [<ffff800012327fd4>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (622): [<ffff8000081c3418>] softirq_handle_end kernel/softirq.c:414 [inline]
softirqs last  enabled at (622): [<ffff8000081c3418>] handle_softirqs+0xb84/0xd58 kernel/softirq.c:599
softirqs last disabled at (615): [<ffff800008020174>] __do_softirq+0x14/0x20 kernel/softirq.c:605
---[ end trace 0000000000000000 ]---