audit: type=1400 audit(1669282895.860:10): avc: denied { block_suspend } for pid=7729 comm="syz-executor.6" capability=36 scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=capability2 permissive=1 watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.6:7737] Modules linked in: irq event stamp: 3702973 hardirqs last enabled at (3702972): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3702973): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3639914): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3639917): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 7737 Comm: syz-executor.6 Not tainted 6.1.0-rc6-next-20221123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x790/0x1360 Code: 44 24 08 e8 e2 34 4c fe 0f b6 44 24 08 84 c0 0f 85 09 06 00 00 e8 00 39 4c fe e8 fb 38 4c fe 48 89 d8 48 c1 e8 03 80 3c 28 00 <0f> 85 3f 09 00 00 48 8b 1b 48 81 fb 20 74 a4 85 0f 84 54 04 00 00 RSP: 0018:ffff88806ce09b80 EFLAGS: 00000246 RAX: 1ffff11008a4a674 RBX: ffff8880452533a0 RCX: 0000000000000100 RDX: ffff888019139ac0 RSI: ffffffff82fcccc5 RDI: 0000000000000004 RBP: dffffc0000000000 R08: 0000000000000004 R09: 0000000000000003 R10: 0000000000000002 R11: 0000000000000001 R12: ffff888017dfc280 R13: ffff8880453e33a0 R14: ffff8880453e3638 R15: 0000000000000002 FS: 00007f414d45c700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fffcc277c58 CR3: 000000003c89e000 CR4: 0000000000350ef0 Call Trace: mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 __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:___slab_alloc+0x877/0x1080 Code: 00 00 48 c7 c6 37 8c 7c 81 48 89 df e8 02 7e af ff 48 f7 44 24 10 00 02 00 00 74 06 e8 d2 90 d3 ff fb 48 8b 84 24 80 00 00 00 <65> 48 2b 04 25 28 00 00 00 0f 85 ef 07 00 00 48 81 c4 88 00 00 00 RSP: 0018:ffff8880108efc00 EFLAGS: 00000206 RAX: 02cb5b3dd74daf00 RBX: ffff88806ce42b80 RCX: ffffffff812b6c4f RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000 RBP: ffff8880095c8140 R08: 0000000000000001 R09: ffffffff876348b7 R10: fffffbfff0ec6916 R11: 0000000000000001 R12: 0000000000042b80 R13: ffffea00003d6a80 R14: ffff888019139ac0 R15: ffff88800f5aa240 __slab_alloc.constprop.0+0x4d/0x90 kmem_cache_alloc+0x355/0x410 do_epoll_ctl+0xc60/0x2da0 __x64_sys_epoll_ctl+0x143/0x1d0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f414fee6b19 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:00007f414d45c188 EFLAGS: 00000246 ORIG_RAX: 00000000000000e9 RAX: ffffffffffffffda RBX: 00007f414fff9f60 RCX: 00007f414fee6b19 RDX: 0000000000000005 RSI: 0000000000000001 RDI: 0000000000000004 RBP: 00007f414ff40f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000020000240 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffefdfaf53f R14: 00007f414d45c300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 19 Comm: ksoftirqd/1 Not tainted 6.1.0-rc6-next-20221123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__kasan_check_read+0x8/0x20 Code: 02 eb dd 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 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 <89> f6 31 d2 e9 8f f4 ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f RSP: 0018:ffff888008eef908 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8441502b RDX: fffffbfff0b48e8d RSI: 0000000000000004 RDI: ffffffff85a47460 RBP: ffffffff85a47460 R08: 0000000000000000 R09: ffffffff85a47463 R10: fffffbfff0b48e8c R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48e8c R14: 0000000000000001 R15: 1ffff110011ddf23 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000564778da6628 CR3: 000000000f304000 CR4: 0000000000350ee0 Call Trace: queued_spin_lock_slowpath+0xab/0xc80 do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xab0 __iterate_interfaces+0x2d3/0x560 ieee80211_iterate_active_interfaces_atomic+0x74/0x180 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xba0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x8f9 run_ksoftirqd+0x35/0x60 smpboot_thread_fn+0x683/0xa20 kthread+0x2f1/0x3a0 ret_from_fork+0x2c/0x50 ---------------- Code disassembly (best guess): 0: 44 24 08 rex.R and $0x8,%al 3: e8 e2 34 4c fe callq 0xfe4c34ea 8: 0f b6 44 24 08 movzbl 0x8(%rsp),%eax d: 84 c0 test %al,%al f: 0f 85 09 06 00 00 jne 0x61e 15: e8 00 39 4c fe callq 0xfe4c391a 1a: e8 fb 38 4c fe callq 0xfe4c391a 1f: 48 89 d8 mov %rbx,%rax 22: 48 c1 e8 03 shr $0x3,%rax 26: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) * 2a: 0f 85 3f 09 00 00 jne 0x96f <-- trapping instruction 30: 48 8b 1b mov (%rbx),%rbx 33: 48 81 fb 20 74 a4 85 cmp $0xffffffff85a47420,%rbx 3a: 0f 84 54 04 00 00 je 0x494