================================ WARNING: inconsistent lock state 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Not tainted -------------------------------- inconsistent {SOFTIRQ-ON-W} -> {IN-SOFTIRQ-W} usage. modprobe/5495 [HC0[0]:SC1[1]:HE0:SE0] takes: ffff888029fd2148 (&timer->lock){+.?.}-{2:2}, at: class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline] ffff888029fd2148 (&timer->lock){+.?.}-{2:2}, at: snd_timer_interrupt.part.0+0x31/0xd80 sound/core/timer.c:818 {SOFTIRQ-ON-W} state was registered at: lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x2e/0x40 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] class_spinlock_constructor include/linux/spinlock.h:561 [inline] snd_timer_close_locked+0x65/0xbd0 sound/core/timer.c:412 snd_timer_close+0x8b/0xf0 sound/core/timer.c:464 snd_seq_timer_close+0xa4/0x100 sound/core/seq/seq_timer.c:302 queue_delete+0x49/0xa0 sound/core/seq/seq_queue.c:126 snd_seq_queue_delete+0x45/0x60 sound/core/seq/seq_queue.c:188 snd_seq_kernel_client_ctl+0x10a/0x1c0 sound/core/seq/seq_clientmgr.c:2526 delete_seq_queue.isra.0+0xc8/0x150 sound/core/seq/oss/seq_oss_init.c:371 odev_release+0x52/0x80 sound/core/seq/oss/seq_oss.c:144 __fput+0x273/0xb80 fs/file_table.c:422 __fput_sync+0x47/0x50 fs/file_table.c:507 __do_sys_close fs/open.c:1556 [inline] __se_sys_close fs/open.c:1541 [inline] __x64_sys_close+0x86/0x100 fs/open.c:1541 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xd5/0x260 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x6d/0x75 irq event stamp: 445 hardirqs last enabled at (444): [] irqentry_exit+0x3b/0x90 kernel/entry/common.c:351 hardirqs last disabled at (445): [] __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:108 [inline] hardirqs last disabled at (445): [] _raw_spin_lock_irqsave+0x52/0x60 kernel/locking/spinlock.c:162 softirqs last enabled at (202): [] local_bh_enable include/linux/bottom_half.h:33 [inline] softirqs last enabled at (202): [] fpregs_unlock arch/x86/include/asm/fpu/api.h:80 [inline] softirqs last enabled at (202): [] fpu_reset_fpregs arch/x86/kernel/fpu/core.c:733 [inline] softirqs last enabled at (202): [] fpu_flush_thread+0x306/0x410 arch/x86/kernel/fpu/core.c:777 softirqs last disabled at (391): [] invoke_softirq kernel/softirq.c:428 [inline] softirqs last disabled at (391): [] __irq_exit_rcu kernel/softirq.c:633 [inline] softirqs last disabled at (391): [] irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645 other info that might help us debug this: Possible unsafe locking scenario: CPU0 ---- lock(&timer->lock); lock(&timer->lock); *** DEADLOCK *** 2 locks held by modprobe/5495: #0: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:298 [inline] #0: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:750 [inline] #0: ffffffff8d7b49e0 (rcu_read_lock){....}-{1:2}, at: ima_match_policy+0x136/0x22f0 security/integrity/ima/ima_policy.c:750 #1: ffffc90000007cb0 ((&priv->tlist)){+.-.}-{0:0}, at: call_timer_fn+0x11a/0x5b0 kernel/time/timer.c:1789 stack backtrace: CPU: 0 PID: 5495 Comm: modprobe Not tainted 6.8.0-syzkaller-08951-gfe46a7dd189e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:114 print_usage_bug kernel/locking/lockdep.c:3971 [inline] valid_state kernel/locking/lockdep.c:4013 [inline] mark_lock_irq kernel/locking/lockdep.c:4216 [inline] mark_lock+0x923/0xc60 kernel/locking/lockdep.c:4678 mark_usage kernel/locking/lockdep.c:4567 [inline] __lock_acquire+0x13d4/0x3b30 kernel/locking/lockdep.c:5091 lock_acquire kernel/locking/lockdep.c:5754 [inline] lock_acquire+0x1b1/0x540 kernel/locking/lockdep.c:5719 __raw_spin_lock_irqsave include/linux/spinlock_api_smp.h:110 [inline] _raw_spin_lock_irqsave+0x3a/0x60 kernel/locking/spinlock.c:162 class_spinlock_irqsave_constructor include/linux/spinlock.h:574 [inline] snd_timer_interrupt.part.0+0x31/0xd80 sound/core/timer.c:818 snd_timer_interrupt sound/core/timer.c:1107 [inline] snd_timer_s_function+0x14f/0x200 sound/core/timer.c:1107 call_timer_fn+0x1a3/0x5b0 kernel/time/timer.c:1792 expire_timers kernel/time/timer.c:1843 [inline] __run_timers+0x74b/0xab0 kernel/time/timer.c:2408 __run_timer_base kernel/time/timer.c:2419 [inline] __run_timer_base kernel/time/timer.c:2412 [inline] run_timer_base+0x111/0x190 kernel/time/timer.c:2428 run_timer_softirq+0x1a/0x40 kernel/time/timer.c:2438 __do_softirq+0x21b/0x8de kernel/softirq.c:554 invoke_softirq kernel/softirq.c:428 [inline] __irq_exit_rcu kernel/softirq.c:633 [inline] irq_exit_rcu+0xb9/0x120 kernel/softirq.c:645 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1043 [inline] sysvec_apic_timer_interrupt+0x95/0xb0 arch/x86/kernel/apic/apic.c:1043 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702 RIP: 0010:ima_match_rules security/integrity/ima/ima_policy.c:596 [inline] RIP: 0010:ima_match_policy+0x370/0x22f0 security/integrity/ima/ima_policy.c:757 Code: 4f fd 85 ed 74 64 e8 5f a6 4f fd 49 8d 7e 20 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 d4 1c 00 00 48 8b 44 24 68 4d 8b 66 20 <80> 38 00 0f 85 7b 1e 00 00 48 8b 44 24 28 48 8b 68 28 48 8d 7d 60 RSP: 0018:ffffc900041d74f0 EFLAGS: 00000246 RAX: ffffed10477b705b RBX: 0000000000000004 RCX: ffffffff843e95c8 RDX: ffff888022ef3c00 RSI: ffffffff843e95d1 RDI: ffffffff8d2420c0 RBP: 0000000000000004 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000004 R11: 0000000000000000 R12: 0000000001021994 R13: 0000000000000002 R14: ffffffff8d2420a0 R15: dffffc0000000000 ima_get_action+0x82/0xb0 security/integrity/ima/ima_api.c:199 process_measurement+0x2e7/0x2100 security/integrity/ima/ima_main.c:233 ima_file_mmap+0x146/0x1d0 security/integrity/ima/ima_main.c:442 security_mmap_file+0xa8/0x1d0 security/security.c:2827 vm_mmap_pgoff+0xdb/0x3c0 mm/util.c:569 vm_mmap+0x8e/0xc0 mm/util.c:592 elf_map fs/binfmt_elf.c:385 [inline] elf_load+0x19a/0x880 fs/binfmt_elf.c:408 load_elf_interp fs/binfmt_elf.c:675 [inline] load_elf_binary+0x343a/0x4e10 fs/binfmt_elf.c:1200 search_binary_handler fs/exec.c:1777 [inline] exec_binprm fs/exec.c:1819 [inline] bprm_execve fs/exec.c:1871 [inline] bprm_execve+0x706/0x1980 fs/exec.c:1847 kernel_execve+0x3cf/0x4e0 fs/exec.c:2038 call_usermodehelper_exec_async+0x255/0x4c0 kernel/umh.c:110 ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:243 ---------------- Code disassembly (best guess): 0: 4f fd rex.WRXB std 2: 85 ed test %ebp,%ebp 4: 74 64 je 0x6a 6: e8 5f a6 4f fd call 0xfd4fa66a b: 49 8d 7e 20 lea 0x20(%r14),%rdi f: 48 89 f8 mov %rdi,%rax 12: 48 c1 e8 03 shr $0x3,%rax 16: 42 80 3c 38 00 cmpb $0x0,(%rax,%r15,1) 1b: 0f 85 d4 1c 00 00 jne 0x1cf5 21: 48 8b 44 24 68 mov 0x68(%rsp),%rax 26: 4d 8b 66 20 mov 0x20(%r14),%r12 * 2a: 80 38 00 cmpb $0x0,(%rax) <-- trapping instruction 2d: 0f 85 7b 1e 00 00 jne 0x1eae 33: 48 8b 44 24 28 mov 0x28(%rsp),%rax 38: 48 8b 68 28 mov 0x28(%rax),%rbp 3c: 48 8d 7d 60 lea 0x60(%rbp),%rdi