================================ WARNING: inconsistent lock state 5.10.0-syzkaller #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. systemd-udevd/24257 [HC0[0]:SC1[1]:HE1:SE0] takes: ffff888144d448a8 (&file_data->lock){+.?.}-{2:2}, at: spin_lock include/linux/spinlock.h:354 [inline] ffff888144d448a8 (&file_data->lock){+.?.}-{2:2}, at: io_file_data_ref_zero+0x75/0x480 fs/io_uring.c:7361 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5437 [inline] lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] io_sqe_files_register fs/io_uring.c:7496 [inline] __io_uring_register fs/io_uring.c:9665 [inline] __do_sys_io_uring_register+0x338f/0x4080 fs/io_uring.c:9755 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 irq event stamp: 3482 hardirqs last enabled at (3482): [] __raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:160 [inline] hardirqs last enabled at (3482): [] _raw_spin_unlock_irqrestore+0x42/0x50 kernel/locking/spinlock.c:191 hardirqs last disabled at (3481): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (3481): [] _raw_spin_lock_irqsave+0x4e/0x50 kernel/locking/spinlock.c:159 softirqs last enabled at (2854): [] asm_call_irq_on_stack+0xf/0x20 softirqs last disabled at (3245): [] asm_call_irq_on_stack+0xf/0x20 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&file_data->lock); lock(&file_data->lock); *** DEADLOCK *** 3 locks held by systemd-udevd/24257: #0: ffffffff8ba00338 (tomoyo_ss){....}-{0:0}, at: tomoyo_check_open_permission+0xe8/0x380 security/tomoyo/file.c:761 #1: ffffffff8b339f40 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2479 [inline] #1: ffffffff8b339f40 (rcu_callback){....}-{0:0}, at: rcu_core+0x582/0xf00 kernel/rcu/tree.c:2723 #2: ffffffff8b33a060 (rcu_read_lock){....}-{1:2}, at: percpu_ref_put_many.constprop.0+0x0/0x250 net/netfilter/xt_cgroup.c:62 stack backtrace: CPU: 1 PID: 24257 Comm: systemd-udevd Not tainted 5.10.0-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x107/0x163 lib/dump_stack.c:120 print_usage_bug kernel/locking/lockdep.c:3740 [inline] valid_state kernel/locking/lockdep.c:3751 [inline] mark_lock_irq kernel/locking/lockdep.c:3954 [inline] mark_lock.cold+0x31/0x73 kernel/locking/lockdep.c:4411 mark_usage kernel/locking/lockdep.c:4306 [inline] __lock_acquire+0x11a5/0x5500 kernel/locking/lockdep.c:4786 lock_acquire kernel/locking/lockdep.c:5437 [inline] lock_acquire+0x29d/0x740 kernel/locking/lockdep.c:5402 __raw_spin_lock include/linux/spinlock_api_smp.h:142 [inline] _raw_spin_lock+0x2a/0x40 kernel/locking/spinlock.c:151 spin_lock include/linux/spinlock.h:354 [inline] io_file_data_ref_zero+0x75/0x480 fs/io_uring.c:7361 percpu_ref_put_many.constprop.0+0x217/0x250 include/linux/percpu-refcount.h:322 rcu_do_batch kernel/rcu/tree.c:2489 [inline] rcu_core+0x5eb/0xf00 kernel/rcu/tree.c:2723 __do_softirq+0x2a0/0x9f6 kernel/softirq.c:298 asm_call_irq_on_stack+0xf/0x20 __run_on_irqstack arch/x86/include/asm/irq_stack.h:26 [inline] run_on_irqstack_cond arch/x86/include/asm/irq_stack.h:77 [inline] do_softirq_own_stack+0xaa/0xd0 arch/x86/kernel/irq_64.c:77 invoke_softirq kernel/softirq.c:393 [inline] __irq_exit_rcu kernel/softirq.c:423 [inline] irq_exit_rcu+0x132/0x200 kernel/softirq.c:435 sysvec_apic_timer_interrupt+0x4d/0x100 arch/x86/kernel/apic/apic.c:1096 asm_sysvec_apic_timer_interrupt+0x12/0x20 arch/x86/include/asm/idtentry.h:628 RIP: 0010:tomoyo_domain_quota_is_ok+0x2ec/0x550 security/tomoyo/util.c:1093 Code: 84 e4 0f 84 9d 01 00 00 45 31 e4 e8 4e 79 ee fd 44 89 e0 48 83 c4 18 5b 5d 41 5c 41 5d 41 5e 41 5f c3 41 bc 01 00 00 00 31 db 2f 79 ee fd 89 d9 44 89 e0 31 ff d3 f8 83 e0 01 41 89 c7 89 c6 RSP: 0018:ffffc900173475b0 EFLAGS: 00000283 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff838223ba RDX: 0000000000000001 RSI: ffff88801a263580 RDI: 0000000000000001 RBP: ffff88801e547980 R08: 0000000000000001 R09: ffffffff8f08df87 R10: 0000000000000010 R11: 0000000000000001 R12: 0000000000000026 R13: 0000000000000221 R14: dffffc0000000000 R15: 0000000000000000 tomoyo_supervisor+0x2f2/0xef0 security/tomoyo/common.c:2089 tomoyo_audit_path_log security/tomoyo/file.c:168 [inline] tomoyo_path_permission security/tomoyo/file.c:587 [inline] tomoyo_path_permission+0x270/0x3a0 security/tomoyo/file.c:573 tomoyo_check_open_permission+0x33e/0x380 security/tomoyo/file.c:777 tomoyo_file_open security/tomoyo/tomoyo.c:313 [inline] tomoyo_file_open+0xa3/0xd0 security/tomoyo/tomoyo.c:308 security_file_open+0x52/0x4f0 security/security.c:1576 do_dentry_open+0x358/0x11b0 fs/open.c:804 do_open fs/namei.c:3252 [inline] path_openat+0x1b9a/0x2730 fs/namei.c:3369 do_filp_open+0x17e/0x3c0 fs/namei.c:3396 do_sys_openat2+0x16d/0x420 fs/open.c:1168 do_sys_open fs/open.c:1184 [inline] __do_sys_open fs/open.c:1192 [inline] __se_sys_open fs/open.c:1188 [inline] __x64_sys_open+0x119/0x1c0 fs/open.c:1188 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x7f8fca9c3840 Code: 73 01 c3 48 8b 0d 68 77 20 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 89 bb 20 00 00 75 10 b8 02 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 1e f6 ff ff 48 89 04 24 RSP: 002b:00007ffe9b8544e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 RAX: ffffffffffffffda RBX: 000055b27efd6df0 RCX: 00007f8fca9c3840 RDX: 000055b27e914fe3 RSI: 00000000000a0800 RDI: 000055b27efc22b0 RBP: 00007ffe9b854660 R08: 000055b27e914670 R09: 0000000000000010 R10: 000055b27e914d0c R11: 0000000000000246 R12: 00007ffe9b8545b0 R13: 000055b27efc1d50 R14: 0000000000000003 R15: 000000000000000e mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71 mceusb 6-1:0.0: Error: urb status = -71