------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x0, magic = 0xffff0000dcb65bb0, owner = 0x0, curr 0xffff0000c9a50000, list empty
WARNING: CPU: 1 PID: 9366 at kernel/locking/rwsem.c:1343 __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343
Modules linked in:
CPU: 1 PID: 9366 Comm: syz-executor.0 Not tainted 6.7.0-rc3-syzkaller-00306-g968f35f4ab1c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343
lr : __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343
sp : ffff800098347860
x29: ffff8000983478f0 x28: 1ffff00011bf608b x27: ffff80008dfb0000
x26: dfff800000000000 x25: 0000000000000000 x24: ffff0000dcb65c08
x23: ffff0000c9a50000 x22: ffff800098347880 x21: 0000000000000000
x20: ffff0000dcb65bb0 x19: ffff0000dcb65bb0 x18: ffff800098347320
x17: 0000000000000000 x16: ffff80008031af24 x15: 0000000000000001
x14: 1fffe0003684ffb0 x13: 0000000000000000 x12: 0000000000000003
x11: 0000000000000001 x10: 0000000000000003 x9 : 21fcabbe8d34cc00
x8 : 21fcabbe8d34cc00 x7 : ffff800080272490 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000
x2 : ffff0000c9a50000 x1 : ffff80008a7adf80 x0 : ffff800126366000
Call trace:
 __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343
 up_read+0x2c/0x3c kernel/locking/rwsem.c:1622
 inode_unlock_shared include/linux/fs.h:817 [inline]
 lookup_slow+0x6c/0x84 fs/namei.c:1712
 walk_component+0x280/0x36c fs/namei.c:2002
 lookup_last fs/namei.c:2459 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2483
 filename_lookup+0x1d4/0x4e0 fs/namei.c:2512
 user_path_at_empty+0x5c/0x84 fs/namei.c:2911
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3674 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __arm64_sys_mount+0x428/0x594 fs/namespace.c:3863
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
irq event stamp: 100
hardirqs last  enabled at (99): [<ffff80008029246c>] raw_spin_rq_unlock_irq+0x14/0x24 kernel/sched/sched.h:1361
hardirqs last disabled at (100): [<ffff80008a643780>] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436
softirqs last  enabled at (8): [<ffff800080031c3c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (6): [<ffff800080031c08>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19
---[ end trace 0000000000000000 ]---
------------[ cut here ]------------
DEBUG_RWSEMS_WARN_ON(tmp < 0): count = 0xffffffffffffff00, magic = 0xffff0000dcb65bb0, owner = 0x0, curr 0xffff0000c9a50000, list empty
WARNING: CPU: 1 PID: 9366 at kernel/locking/rwsem.c:1348 __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348
Modules linked in:
CPU: 1 PID: 9366 Comm: syz-executor.0 Tainted: G        W          6.7.0-rc3-syzkaller-00306-g968f35f4ab1c #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023
pstate: 60400005 (nZCv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348
lr : __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348
sp : ffff800098347860
x29: ffff8000983478f0 x28: 1ffff00011bf608b x27: ffff80008dfb0000
x26: dfff800000000000 x25: ffffffffffffff00 x24: ffff0000dcb65c08
x23: ffff0000dcb65bb0 x22: ffffffffffffff00 x21: 0000000000000000
x20: ffff0000c9a50000 x19: ffff0000dcb65bb0 x18: ffff800098347320
x17: 0000000000000000 x16: ffff80008a647c5c x15: 0000000000000001
x14: 1ffff00013068e60 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000000003 x10: 0000000000ff0100 x9 : 21fcabbe8d34cc00
x8 : 21fcabbe8d34cc00 x7 : 0000000000000001 x6 : 0000000000000001
x5 : ffff800098347158 x4 : ffff80008e091f40 x3 : ffff800082bd4f14
x2 : 0000000000000001 x1 : 0000000100000001 x0 : 0000000000000000
Call trace:
 __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348
 up_read+0x2c/0x3c kernel/locking/rwsem.c:1622
 inode_unlock_shared include/linux/fs.h:817 [inline]
 lookup_slow+0x6c/0x84 fs/namei.c:1712
 walk_component+0x280/0x36c fs/namei.c:2002
 lookup_last fs/namei.c:2459 [inline]
 path_lookupat+0x13c/0x3d0 fs/namei.c:2483
 filename_lookup+0x1d4/0x4e0 fs/namei.c:2512
 user_path_at_empty+0x5c/0x84 fs/namei.c:2911
 user_path_at include/linux/namei.h:57 [inline]
 do_mount fs/namespace.c:3674 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount fs/namespace.c:3863 [inline]
 __arm64_sys_mount+0x428/0x594 fs/namespace.c:3863
 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155
 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678
 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595
irq event stamp: 157
hardirqs last  enabled at (157): [<ffff80008a645ab0>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline]
hardirqs last  enabled at (157): [<ffff80008a645ab0>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94
hardirqs last disabled at (156): [<ffff80008a71c640>] preempt_schedule_irq+0x90/0x188 kernel/sched/core.c:7009
softirqs last  enabled at (152): [<ffff80008002189c>] softirq_handle_end kernel/softirq.c:399 [inline]
softirqs last  enabled at (152): [<ffff80008002189c>] __do_softirq+0xac8/0xce4 kernel/softirq.c:582
softirqs last disabled at (105): [<ffff80008002aadc>] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80
---[ end trace 0000000000000000 ]---