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DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff0000e01d0330, owner = 0x0, curr 0xffff0000da311bc0, list empty
WARNING: CPU: 0 PID: 5414 at kernel/locking/rwsem.c:1372 __up_write kernel/locking/rwsem.c:1371 [inline]
WARNING: CPU: 0 PID: 5414 at kernel/locking/rwsem.c:1372 up_write+0x494/0x5c0 kernel/locking/rwsem.c:1626
Modules linked in:
CPU: 0 PID: 5414 Comm: syz.6.193 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/30/2025
pstate: 62400005 (nZCv daif +PAN -UAO +TCO -DIT -SSBS BTYPE=--)
pc : __up_write kernel/locking/rwsem.c:1371 [inline]
pc : up_write+0x494/0x5c0 kernel/locking/rwsem.c:1626
lr : __up_write kernel/locking/rwsem.c:1371 [inline]
lr : up_write+0x494/0x5c0 kernel/locking/rwsem.c:1626
sp : ffff800020d67440
x29: ffff800020d67450 x28: 0000000000000004 x27: dfff800000000000
x26: dfff800000000000 x25: 1fffe0001c03a073 x24: ffff0000e01d0388
x23: 0000000000000000 x22: 0000000000000000 x21: ffff0000da311bc0
x20: ffff0000e01d0330 x19: ffff0000e01d0330 x18: ffff800011abbcc0
x17: 1fffe00033ed797e x16: ffff8000082d22d4 x15: ffff8000150bd000
x14: 0000000000000100 x13: 1ffff00002a180b1 x12: 0000000000000001
x11: 1fffe0001b465d90 x10: 0000000000000000 x9 : 20960f2cf9ab9b00
x8 : 20960f2cf9ab9b00 x7 : ffff800008251e10 x6 : 0000000000000000
x5 : 0000000000000080 x4 : 0000000000000001 x3 : ffff800008240d6c
x2 : 0000000000000001 x1 : 0000000000000004 x0 : 0000000000000001
Call trace:
 __up_write kernel/locking/rwsem.c:1371 [inline]
 up_write+0x494/0x5c0 kernel/locking/rwsem.c:1626
 inode_unlock include/linux/fs.h:763 [inline]
 ovl_workdir_create+0x57c/0x634 fs/overlayfs/super.c:842
 ovl_make_workdir fs/overlayfs/super.c:1389 [inline]
 ovl_get_workdir+0x2fc/0x1068 fs/overlayfs/super.c:1539
 ovl_fill_super+0x139c/0x2294 fs/overlayfs/super.c:2095
 mount_nodev+0x68/0x104 fs/super.c:1489
 ovl_mount+0x3c/0x50 fs/overlayfs/super.c:2186
 legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
 vfs_get_tree+0x90/0x274 fs/super.c:1573
 do_new_mount+0x228/0x810 fs/namespace.c:3069
 path_mount+0x5b4/0xe78 fs/namespace.c:3399
 do_mount fs/namespace.c:3412 [inline]
 __do_sys_mount fs/namespace.c:3620 [inline]
 __se_sys_mount fs/namespace.c:3597 [inline]
 __arm64_sys_mount+0x49c/0x584 fs/namespace.c:3597
 __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+0x58/0x138 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: 17492
hardirqs last  enabled at (17491): [<ffff800008251ea4>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1367 [inline]
hardirqs last  enabled at (17491): [<ffff800008251ea4>] finish_lock_switch+0xb0/0x1c4 kernel/sched/core.c:5003
hardirqs last disabled at (17492): [<ffff800011956c70>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:405
softirqs last  enabled at (16190): [<ffff80000803092c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (16188): [<ffff8000080308f8>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---