watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.3:14010] Modules linked in: irq event stamp: 4647695 hardirqs last enabled at (4647694): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4647695): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (4623374): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (4623377): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 14010 Comm: syz-executor.3 Not tainted 6.2.0-rc5-next-20230127 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_is_held_type+0xe4/0x120 Code: 31 c0 44 39 f0 41 0f 94 c0 b8 ff ff ff ff 65 0f c1 05 50 ff bc 7b 83 f8 01 75 2e 48 f7 04 24 00 02 00 00 74 01 fb 48 83 c4 08 <44> 89 c0 5b 5d 41 5c 41 5d 41 5e 41 5f e9 4e 26 02 00 44 89 c0 e9 RSP: 0018:ffff88806ce09660 EFLAGS: 00000296 RAX: 0000000000000001 RBX: 0000000000000005 RCX: 0000000000000001 RDX: 0000000000000000 RSI: ffffffff85609c20 RDI: ffff88801587bf80 RBP: ffffffff85609c20 R08: 0000000000000000 R09: ffffffff85d0ff97 R10: fffffbfff0ba1ff2 R11: 0000000000000001 R12: ffff88801587b580 R13: ffff88801587bee0 R14: 00000000ffffffff R15: ffff88801587bf80 FS: 00007fbf12c54700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f80647963a4 CR3: 000000001ed72000 CR4: 0000000000350ef0 Call Trace: rcu_read_lock_sched_held+0x42/0x80 trace_lock_acquire+0x170/0x1e0 lock_acquire+0x32/0xc0 __is_insn_slot_addr+0x41/0x290 kernel_text_address+0x48/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node+0x187/0x330 __alloc_skb+0x21a/0x310 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d3/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:format_decode+0x46a/0xb50 Code: fd 44 89 fe bf 6c 00 00 00 e8 32 18 09 fd 41 80 ff 6c 0f 84 04 04 00 00 e8 b3 1c 09 fd 44 89 fe bf 7a 00 00 00 e8 16 18 09 fd <41> 80 ff 7a 0f 84 81 05 00 00 e8 97 1c 09 fd 44 89 fe bf 74 00 00 RSP: 0018:ffff888044b1f410 EFLAGS: 00000297 RAX: 0000000000000002 RBX: ffff888044b1f528 RCX: ffffffff8442408a RDX: ffff88801587b580 RSI: 0000000000000000 RDI: 0000000000000001 RBP: 0000000000000075 R08: 0000000000000001 R09: 000000000000007a R10: 0000000000000000 R11: 0000000000000000 R12: ffffffff849dae58 R13: 1ffff11008963e85 R14: 0000000000000001 R15: 0000000000000000 vsnprintf+0x15c/0x1650 seq_printf+0x19d/0x250 diskstats_show+0x2ea/0x690 seq_read_iter+0xbe2/0x1300 proc_reg_read_iter+0x20e/0x2e0 generic_file_splice_read+0x18b/0x4d0 do_splice_to+0x1bc/0x240 splice_direct_to_actor+0x2b0/0x8c0 do_splice_direct+0x1bc/0x290 do_sendfile+0xb1d/0x12b0 __x64_sys_sendfile64+0x1d5/0x210 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fbf156deb19 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:00007fbf12c54188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007fbf157f1f60 RCX: 00007fbf156deb19 RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000003 RBP: 00007fbf15738f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000040100000284 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff2adfe75f R14: 00007fbf12c54300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 14017 Comm: syz-executor.4 Not tainted 6.2.0-rc5-next-20230127 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:idle_cpu+0x80/0x120 Code: 00 0f 85 a5 00 00 00 48 8d bb e0 09 00 00 48 8b ab d8 09 00 00 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 <75> 79 48 3b ab e0 09 00 00 74 09 31 c0 5b 5d e9 60 5a 23 03 48 b8 RSP: 0018:ffff88806cf09898 EFLAGS: 00000046 RAX: dffffc0000000000 RBX: ffff88806cf39380 RCX: 0000000000000001 RDX: 1ffff1100d9e73ac RSI: ffffffff85609c20 RDI: ffff88806cf39d60 RBP: ffff8880444e1ac0 R08: 0000000000000000 R09: ffffffff85d0ff97 R10: fffffbfff0ba1ff2 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000056142c050890 CR3: 000000001646c000 CR4: 0000000000350ee0 Call Trace: __irq_exit_rcu+0x3c/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x38/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:___slab_alloc+0x1d1/0x1070 Code: 45 28 0f 85 f6 03 00 00 49 c7 45 28 00 00 00 00 48 c7 c6 6f 1a 7f 81 4c 89 ef e8 7a 24 ae ff 48 83 3c 24 00 0f 85 a1 01 00 00 <48> 83 7b 18 00 0f 84 8a 04 00 00 9c 41 5d fa 41 81 e5 00 02 00 00 RSP: 0018:ffff88806cf09990 EFLAGS: 00000206 RAX: 0000000000383506 RBX: ffff88806cf3dc80 RCX: ffffffff812c9c2f RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff817f1c37 RBP: ffff88800844f780 R08: 0000000000000001 R09: ffffffff87698947 R10: fffffbfff0ed3128 R11: 0000000000000001 R12: 00000000ffffffff R13: ffff88806cf3dca0 R14: 0000000000000000 R15: 0000000000000000 kmem_cache_alloc+0x2fa/0x320 __create_object+0x3c/0xc90 __kmem_cache_alloc_node+0x1ed/0x310 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3d9/0x13c0 ieee80211_beacon_get_tim+0x99/0x540 mac80211_hwsim_beacon_tx+0x1d3/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x258/0x8a2 __irq_exit_rcu+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:kasan_check_range+0x18/0x1d0 Code: 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 48 85 f6 0f 84 73 01 00 00 48 89 f8 41 54 44 0f b6 c2 55 53 <48> 01 f0 72 14 eb 2c 0f 1f 00 48 ba ff ff ff ff ff ff ff fe 48 39 RSP: 0018:ffff8880367c76a0 EFLAGS: 00000202 RAX: ffffea0000d2e5b0 RBX: 0000000000000000 RCX: ffffffff8174bcd1 RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffffea0000d2e5b0 RBP: ffffea0000d2e580 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffea0000d2e580 R13: ffff888030cd68f0 R14: 0000000000000000 R15: ffffea0000d2e580 page_remove_rmap+0xb1/0x540 unmap_page_range+0x16c5/0x2da0 unmap_single_vma+0x194/0x2a0 unmap_vmas+0x233/0x390 exit_mmap+0x15b/0x6a0 mmput+0xd5/0x390 do_exit+0x9c6/0x2800 do_group_exit+0xd4/0x2a0 get_signal+0x23c8/0x2450 arch_do_signal_or_restart+0x79/0x590 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f0b4abb0b19 Code: Unable to access opcode bytes at 0x7f0b4abb0aef. RSP: 002b:00007f0b48126188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: 0000000000000264 RBX: 00007f0b4acc3f60 RCX: 00007f0b4abb0b19 RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000003 RBP: 00007f0b4ac0af6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000040100000284 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd4120424f R14: 00007f0b48126300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 31 c0 xor %eax,%eax 2: 44 39 f0 cmp %r14d,%eax 5: 41 0f 94 c0 sete %r8b 9: b8 ff ff ff ff mov $0xffffffff,%eax e: 65 0f c1 05 50 ff bc xadd %eax,%gs:0x7bbcff50(%rip) # 0x7bbcff66 15: 7b 16: 83 f8 01 cmp $0x1,%eax 19: 75 2e jne 0x49 1b: 48 f7 04 24 00 02 00 testq $0x200,(%rsp) 22: 00 23: 74 01 je 0x26 25: fb sti 26: 48 83 c4 08 add $0x8,%rsp * 2a: 44 89 c0 mov %r8d,%eax <-- trapping instruction 2d: 5b pop %rbx 2e: 5d pop %rbp 2f: 41 5c pop %r12 31: 41 5d pop %r13 33: 41 5e pop %r14 35: 41 5f pop %r15 37: e9 4e 26 02 00 jmpq 0x2268a 3c: 44 89 c0 mov %r8d,%eax 3f: e9 .byte 0xe9