------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff0000d3a94590, owner = 0x0, curr 0xffff00012a460000, list empty WARNING: CPU: 0 PID: 5150 at kernel/locking/rwsem.c:1342 __up_write kernel/locking/rwsem.c:1341 [inline] WARNING: CPU: 0 PID: 5150 at kernel/locking/rwsem.c:1342 up_write+0x384/0x438 kernel/locking/rwsem.c:1594 Modules linked in: CPU: 0 PID: 5150 Comm: syz-executor.0 Not tainted 5.15.127-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __up_write kernel/locking/rwsem.c:1341 [inline] pc : up_write+0x384/0x438 kernel/locking/rwsem.c:1594 lr : __up_write kernel/locking/rwsem.c:1341 [inline] lr : up_write+0x384/0x438 kernel/locking/rwsem.c:1594 sp : ffff8000208d7a30 x29: ffff8000208d7a40 x28: 1ffff0000411af60 x27: 1fffe000180a67ac x26: dfff800000000000 x25: 1fffe0001a7528bf x24: ffff0000d3a945e8 x23: 0000000000000000 x22: 0000000000000000 x21: ffff00012a460000 x20: ffff0000d3a94590 x19: ffff0000d3a94590 x18: 0000000000000001 x17: ff80800008334ef4 x16: ffff800011967c34 x15: ffff800008334ef4 x14: 00000000ffffffff x13: ffffffffffffffff x12: 0000000000040000 x11: 00000000000066b4 x10: ffff80001e379000 x9 : 0b4151d957dd3900 x8 : 0b4151d957dd3900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff8000208d7198 x4 : ffff8000149dfd20 x3 : ffff80000854c990 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 00000000000000bd Call trace: __up_write kernel/locking/rwsem.c:1341 [inline] up_write+0x384/0x438 kernel/locking/rwsem.c:1594 inode_unlock include/linux/fs.h:792 [inline] unlock_mount+0x1d8/0x244 fs/namespace.c:2281 do_new_mount_fc fs/namespace.c:2943 [inline] do_new_mount+0x6e4/0x8c4 fs/namespace.c:2996 path_mount+0x590/0x104c fs/namespace.c:3324 do_mount fs/namespace.c:3337 [inline] __do_sys_mount fs/namespace.c:3545 [inline] __se_sys_mount fs/namespace.c:3522 [inline] __arm64_sys_mount+0x510/0x5e0 fs/namespace.c:3522 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:596 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 irq event stamp: 130 hardirqs last enabled at (129): [] __up_console_sem+0xb4/0x100 kernel/printk/printk.c:257 hardirqs last disabled at (130): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:387 softirqs last enabled at (8): [] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:31 softirqs last disabled at (6): [] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:18 ---[ end trace ff6e480ce1fa1878 ]---