audit: type=1400 audit(1673257363.613:11): avc: denied { write } for pid=6912 comm="syz-executor.6" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=perf_event permissive=1 syz-executor.1 (6961) used greatest stack depth: 23968 bytes left watchdog: BUG: soft lockup - CPU#1 stuck for 26s! [syz-executor.7:6932] Modules linked in: irq event stamp: 4520001 hardirqs last enabled at (4520000): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4520001): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4501106): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4501109): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 6932 Comm: syz-executor.7 Not tainted 6.2.0-rc2-next-20230106 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x83/0xf0 Code: 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 <48> 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 RSP: 0018:ffff88806cf097e0 EFLAGS: 00000246 RAX: fffffffffd578d44 RBX: ffffffff85f63d84 RCX: ffffffff834dca25 RDX: 0000000000000000 RSI: ffffffff86365f7c RDI: ffffffff85f63d78 RBP: ffffffff85f63d78 R08: ffffffff86365f7c R09: ffffffff863654b8 R10: ffffed100d9e1322 R11: 0000000000038001 R12: ffffffff85f63d90 R13: ffffffff85f63d78 R14: ffffffff85f63d78 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fb553d786f4 CR3: 000000001eb20000 CR4: 0000000000350ee0 Call Trace: unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x3b4/0xc40 kmem_cache_alloc_node+0x215/0x310 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d2/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __irq_exit_rcu+0x11b/0x180 irq_exit_rcu+0x9/0x30 sysvec_apic_timer_interrupt+0x92/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x8/0x20 Code: 00 00 00 e9 2a fe ff ff 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 8b 0c 24 <48> 89 f2 48 89 fe bf 07 00 00 00 e9 f8 fd ff ff 0f 1f 84 00 00 00 RSP: 0018:ffff8880402b7658 EFLAGS: 00000246 RAX: 1ffff11008056ed1 RBX: dffffc0000000000 RCX: ffffffff816d75b7 RDX: ffff888016058000 RSI: 80000000450f9007 RDI: 0000000000000000 RBP: 1ffff11008056ecd R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff88800e64eb60 R13: 00007f8edbb4e000 R14: 80000000450f9007 R15: ffff8880402b7ad8 vm_normal_page+0x97/0x2e0 unmap_page_range+0x1819/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x6a0 mmput+0xd5/0x390 do_exit+0x99b/0x2780 do_group_exit+0xd4/0x2a0 get_signal+0x2255/0x2390 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f8eddd35b19 Code: Unable to access opcode bytes at 0x7f8eddd35aef. RSP: 002b:00007f8edb2ab218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007f8edde48f68 RCX: 00007f8eddd35b19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007f8edde48f68 RBP: 00007f8edde48f60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8edde48f6c R13: 00007fff1c88a1ff R14: 00007f8edb2ab300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: 01 d0 add %edx,%eax 2: 48 d1 f8 sar %rax 5: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 16: 48 89 d8 mov %rbx,%rax 19: 83 e0 07 and $0x7,%eax 1c: 83 c0 03 add $0x3,%eax 1f: 38 d0 cmp %dl,%al 21: 7c 04 jl 0x27 23: 84 d2 test %dl,%dl 25: 75 50 jne 0x77 27: 48 63 03 movslq (%rbx),%rax * 2a: 48 01 d8 add %rbx,%rax <-- trapping instruction 2d: 48 39 c1 cmp %rax,%rcx 30: 73 b0 jae 0xffffffe2 32: 4c 8d 63 fc lea -0x4(%rbx),%r12 36: 49 39 ec cmp %rbp,%r12 39: 73 b3 jae 0xffffffee 3b: 4d 29 ee sub %r13,%r14 3e: 49 rex.WB 3f: c1 .byte 0xc1