audit: type=1400 audit(1663580323.009:8): avc: denied { kernel } for pid=3708 comm="syz-executor.4" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 ------------[ cut here ]------------ WARNING: CPU: 0 PID: 3709 at kernel/events/core.c:2233 perf_event_task_tick+0xbeb/0x1050 Modules linked in: CPU: 0 PID: 3709 Comm: syz-executor.4 Not tainted 6.0.0-rc5-next-20220916 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014 RIP: 0010:perf_event_task_tick+0xbeb/0x1050 Code: e9 34 fd ff ff e8 75 3b ef ff 65 44 8b 35 e9 99 ab 7e 31 ff 44 89 f6 e8 13 38 ef ff 45 85 f6 0f 84 04 01 00 00 e8 55 3b ef ff <0f> 0b e9 60 fa ff ff e8 49 3b ef ff 65 8b 1d be 99 ab 7e 31 ff 89 RSP: 0000:ffff88806ce09cf0 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff8880086605c8 RCX: 0000000000000100 RDX: ffff88803fea9ac0 RSI: ffffffff8156dbeb RDI: 0000000000000005 RBP: ffff8880101fdd08 R08: 0000000000000005 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888008660660 R13: 0000000000000000 R14: 0000000000000000 R15: dffffc0000000000 FS: 00007fb7a18fd700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005566b4b83080 CR3: 0000000039002000 CR4: 0000000000350ef0 Call Trace: scheduler_tick+0x17e/0x350 update_process_times+0x138/0x190 tick_sched_handle+0x9b/0x180 tick_sched_timer+0xf2/0x120 __hrtimer_run_queues+0x1ca/0xbd0 hrtimer_interrupt+0x315/0x770 __sysvec_apic_timer_interrupt+0x144/0x500 sysvec_apic_timer_interrupt+0x89/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0010:check_preemption_disabled+0x45/0x180 Code: 65 8b 1d 8e 2e de 7b 81 e3 ff ff ff 7f 31 ff 89 de 0f 1f 44 00 00 85 db 74 15 0f 1f 44 00 00 44 89 e0 5b 5d 41 5c 41 5d 41 5e e6 fa 3b 00 0f 1f 44 00 00 9c 5b 81 e3 00 02 00 00 31 ff 48 89 RSP: 0000:ffff888018417c78 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 1ffff11003082f97 RCX: ffffffff812a3fcf RDX: dffffc0000000000 RSI: 0000000000000102 RDI: 0000000000000000 RBP: 0000000000000000 R08: 0000000000000000 R09: ffffffff85b02f17 R10: fffffbfff0b605e2 R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000000 R14: ffffffff85406e80 R15: 0000000000000000 rcu_is_watching+0x11/0xb0 rcu_read_lock_sched_held+0x20/0x80 lock_acquire+0x45e/0x530 rcu_core+0x780/0x2080 __do_softirq+0x1c8/0x8d0 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x5/0x20 sysvec_apic_timer_interrupt+0x40/0xc0 asm_sysvec_apic_timer_interrupt+0x16/0x20 RIP: 0033:0x7fb7a4387b19 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 bc ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fb7a18fd188 EFLAGS: 00000246 RAX: 0000000000000004 RBX: 00007fb7a449af60 RCX: 00007fb7a4387b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007fb7a43e1f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffde2c86caf R14: 00007fb7a18fd300 R15: 0000000000022000 irq event stamp: 2397 hardirqs last enabled at (2396): [] asm_sysvec_apic_timer_interrupt+0x16/0x20 hardirqs last disabled at (2397): [] sysvec_apic_timer_interrupt+0xb/0xc0 softirqs last enabled at (1590): [] inet6_fill_ifla6_attrs+0x1a08/0x1fd0 softirqs last disabled at (2043): [] __irq_exit_rcu+0x11b/0x180 ---[ end trace 0000000000000000 ]--- ====================================================== ---------------- Code disassembly (best guess): 0: 65 8b 1d 8e 2e de 7b mov %gs:0x7bde2e8e(%rip),%ebx # 0x7bde2e95 7: 81 e3 ff ff ff 7f and $0x7fffffff,%ebx d: 31 ff xor %edi,%edi f: 89 de mov %ebx,%esi 11: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 16: 85 db test %ebx,%ebx 18: 74 15 je 0x2f 1a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 1f: 44 89 e0 mov %r12d,%eax 22: 5b pop %rbx 23: 5d pop %rbp 24: 41 5c pop %r12 26: 41 5d pop %r13 28: 41 5e pop %r14 * 2a: e9 e6 fa 3b 00 jmpq 0x3bfb15 <-- trapping instruction 2f: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1) 34: 9c pushfq 35: 5b pop %rbx 36: 81 e3 00 02 00 00 and $0x200,%ebx 3c: 31 ff xor %edi,%edi 3e: 48 rex.W 3f: 89 .byte 0x89