------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON(!is_rwsem_reader_owned(sem)): count = 0x1, magic = 0xffff0000dffcccf0, owner = 0xffff0000d1f31bc0, curr 0xffff0000d4685340, list empty WARNING: CPU: 0 PID: 6751 at kernel/locking/rwsem.c:1343 __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343 Modules linked in: CPU: 0 PID: 6751 Comm: syz-executor.0 Not tainted 6.5.0-rc7-syzkaller-00071-gfe4469582053 #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_read+0x554/0x5f8 kernel/locking/rwsem.c:1343 lr : __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343 sp : ffff800097177880 x29: ffff800097177910 x28: 1ffff00011c140bd x27: ffff80008e0a0000 x26: dfff800000000000 x25: 0000000000000001 x24: ffff0000dffccd48 x23: ffff0000d4685340 x22: ffff8000971778a0 x21: ffff0000d1f31bc0 x20: ffff0000dffcccf0 x19: ffff0000dffcccf0 x18: 1fffe0003683adc6 x17: ffff80008e09d000 x16: ffff8000803199ec x15: 0000000000000001 x14: 1fffe0003683d530 x13: 0000000000000000 x12: 0000000000000003 x11: 0000000000000001 x10: 0000000000000003 x9 : b67869fee474f900 x8 : b67869fee474f900 x7 : ffff800080292a1c x6 : 0000000000000000 x5 : 0000000000000001 x4 : 0000000000000001 x3 : 0000000000000000 x2 : ffff0000d4685340 x1 : ffff80008a6dc4a0 x0 : ffff8001261ea000 Call trace: __up_read+0x554/0x5f8 kernel/locking/rwsem.c:1343 up_read+0x2c/0x3c kernel/locking/rwsem.c:1616 inode_unlock_shared include/linux/fs.h:786 [inline] lookup_slow+0x6c/0x84 fs/namei.c:1708 walk_component+0x280/0x36c fs/namei.c:1998 lookup_last fs/namei.c:2455 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2479 filename_lookup+0x1d4/0x4e0 fs/namei.c:2508 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2907 user_path_at include/linux/namei.h:57 [inline] __do_sys_chdir fs/open.c:551 [inline] __se_sys_chdir fs/open.c:545 [inline] __arm64_sys_chdir+0xc0/0x2d0 fs/open.c:545 __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+0x58/0x16c 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:591 irq event stamp: 1750 hardirqs last enabled at (1749): [] raw_spin_rq_unlock_irq kernel/sched/sched.h:1378 [inline] hardirqs last enabled at (1749): [] finish_lock_switch+0xbc/0x1e4 kernel/sched/core.c:5133 hardirqs last disabled at (1750): [] el1_dbg+0x24/0x80 arch/arm64/kernel/entry-common.c:436 softirqs last enabled at (1742): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (1742): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:582 softirqs last disabled at (1631): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]--- ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON(tmp < 0): count = 0xffffffffffffff00, magic = 0xffff0000dffcccf0, owner = 0x0, curr 0xffff0000d4685340, list empty WARNING: CPU: 0 PID: 6751 at kernel/locking/rwsem.c:1348 __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348 Modules linked in: CPU: 0 PID: 6751 Comm: syz-executor.0 Tainted: G W 6.5.0-rc7-syzkaller-00071-gfe4469582053 #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_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348 lr : __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348 sp : ffff800097177880 x29: ffff800097177910 x28: 1ffff00011c140bd x27: ffff80008e0a0000 x26: dfff800000000000 x25: ffffffffffffff00 x24: ffff0000dffccd48 x23: ffff0000dffcccf0 x22: ffffffffffffff00 x21: 0000000000000000 x20: ffff0000d4685340 x19: ffff0000dffcccf0 x18: 1fffe0003683adc6 x17: 0000000000000000 x16: ffff80008a4bedb0 x15: 0000000000000001 x14: 1ffff00012e2ee2c x13: 0000000000000000 x12: 0000000000000000 x11: 0000000000000001 x10: 0000000000000000 x9 : b67869fee474f900 x8 : b67869fee474f900 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800097177178 x4 : ffff80008e17f000 x3 : ffff800080365c08 x2 : 0000000000000001 x1 : 0000000000000001 x0 : 0000000000000000 Call trace: __up_read+0x3bc/0x5f8 kernel/locking/rwsem.c:1348 up_read+0x2c/0x3c kernel/locking/rwsem.c:1616 inode_unlock_shared include/linux/fs.h:786 [inline] lookup_slow+0x6c/0x84 fs/namei.c:1708 walk_component+0x280/0x36c fs/namei.c:1998 lookup_last fs/namei.c:2455 [inline] path_lookupat+0x13c/0x3d0 fs/namei.c:2479 filename_lookup+0x1d4/0x4e0 fs/namei.c:2508 user_path_at_empty+0x5c/0x1a4 fs/namei.c:2907 user_path_at include/linux/namei.h:57 [inline] __do_sys_chdir fs/open.c:551 [inline] __se_sys_chdir fs/open.c:545 [inline] __arm64_sys_chdir+0xc0/0x2d0 fs/open.c:545 __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+0x58/0x16c 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:591 irq event stamp: 1927 hardirqs last enabled at (1927): [] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:84 [inline] hardirqs last enabled at (1927): [] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:94 hardirqs last disabled at (1926): [] preempt_schedule_irq+0x90/0x188 kernel/sched/core.c:7023 softirqs last enabled at (1922): [] softirq_handle_end kernel/softirq.c:399 [inline] softirqs last enabled at (1922): [] __do_softirq+0xac0/0xd54 kernel/softirq.c:582 softirqs last disabled at (1753): [] ____do_softirq+0x14/0x20 arch/arm64/kernel/irq.c:80 ---[ end trace 0000000000000000 ]---