watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.6:15397] Modules linked in: irq event stamp: 4451887 hardirqs last enabled at (4451886): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4451887): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4396014): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4396017): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 15397 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:strncpy+0x4/0xb0 Code: e8 21 cb 51 fd 48 8b 34 24 eb c2 66 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 <41> 56 49 89 fe 41 55 41 54 55 53 48 83 ec 08 48 85 d2 74 5c 4c 8d RSP: 0018:ffff88806ce09a80 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000200 RCX: 1ffff11001c2a94c RDX: 0000000000000010 RSI: ffffffff848fd6e0 RDI: ffff88800e154b7c RBP: ffff888047ba5000 R08: 0000000000000001 R09: ffff88800e154ab3 R10: ffffed1001c2a956 R11: 0000000000000001 R12: ffff88800e154a68 R13: 0000000000000000 R14: ffff88800e154b7c R15: ffff88800e154a20 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555559ccc58 CR3: 000000000e82a000 CR4: 0000000000350ef0 DR0: 00000000000009f6 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: __create_object+0x615/0xc10 __kmem_cache_alloc_node+0x257/0x400 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 __netdev_alloc_skb+0x76/0x3e0 __ieee80211_beacon_get+0x3de/0x1380 ieee80211_beacon_get_tim+0x99/0x4f0 mac80211_hwsim_beacon_tx+0x1d2/0xab0 __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:__sanitizer_cov_trace_pc+0x0/0x70 Code: be a8 01 00 00 e8 a0 ff ff ff 31 c0 e9 dd 6a f8 02 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 0f 1e fa 65 8b 05 3d 83 ba 7e 89 c1 48 8b 34 24 81 e1 00 01 00 RSP: 0018:ffff8880455cf6f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff816cdc1c RDX: ffff88801cb2b580 RSI: 0000000000000000 RDI: 0000000000000007 RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880455cfad8 R14: 000000003fffffff R15: 0000000021000fff unmap_page_range+0x1306/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 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: 0033:0x7f55b7160a04 Code: Unable to access opcode bytes at 0x7f55b71609da. RSP: 002b:00007f55b4722cc0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101 RAX: 0000000000000006 RBX: 6666666666666667 RCX: 00007f55b7160a04 RDX: 0000000000000002 RSI: 00007f55b4722d60 RDI: 00000000ffffff9c RBP: 00007f55b4722d60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002 R13: 00007ffc4ff094af R14: 00007f55b4723300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 15426 Comm: syz-executor.4 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:lock_release+0x54b/0x750 Code: c7 c0 a0 e8 ce 85 48 ba 00 00 00 00 00 fc ff df 48 c1 e8 03 80 3c 10 00 0f 85 c8 01 00 00 48 8b 05 0a d9 a2 04 e8 25 e7 06 00 <85> c0 74 17 65 ff 0d 62 79 d7 7e 0f 85 4e fb ff ff 0f 1f 44 00 00 RSP: 0018:ffff88806cf094f0 EFLAGS: 00000002 RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000001 RDX: 0000000000000000 RSI: 0000000000010102 RDI: 0000000000000000 RBP: 1ffff1100d9e12a0 R08: 0000000000000000 R09: ffffffff85d11e57 R10: fffffbfff0ba23ca R11: 0000000000000001 R12: ffffffff85628588 R13: 0000000000000000 R14: 0000000000000001 R15: dffffc0000000000 FS: 00007fb576380700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2ce23000 CR3: 0000000043e6c000 CR4: 0000000000350ee0 Call Trace: ktime_get+0x91/0x1f0 clockevents_program_event+0x14f/0x360 tick_program_event+0xb0/0x150 hrtimer_interrupt+0x36a/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:stack_access_ok+0x97/0x1d0 Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 17 01 00 00 48 8b 43 10 49 39 ed 77 1a 48 39 e8 76 15 4a 8d 54 25 00 48 39 d0 0f 93 c0 <49> 39 d5 0f 92 c2 20 d0 75 38 48 8d 7b 28 48 8d 4b 20 48 b8 00 00 RSP: 0018:ffff88806cf097e8 EFLAGS: 00000202 RAX: ffff88806cf0a001 RBX: ffff88806cf098a0 RCX: 0000000000000002 RDX: ffff88806cf09bf0 RSI: ffff88806cf09be8 RDI: ffff88806cf098b0 RBP: ffff88806cf09be8 R08: ffffffff860f6a10 R09: ffffffff860f6a14 R10: ffffed100d9e1321 R11: 0000000000038001 R12: 0000000000000008 R13: ffff88806cf02000 R14: ffff88806cf098a0 R15: ffffffff860f6a15 unwind_next_frame+0x94e/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 __kasan_record_aux_stack+0x95/0xb0 __call_rcu_common.constprop.0+0x6a/0xa40 kmem_cache_free+0xc1/0x610 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 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:__sys_socket+0x119/0x250 Code: 38 00 0f 85 1d 01 00 00 4d 8b a4 24 88 07 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d 7c 24 28 48 89 f9 48 c1 e9 03 80 3c 01 00 <0f> 85 07 01 00 00 49 8b 7c 24 28 8b 34 24 45 31 c9 44 89 e9 4c 8d RSP: 0018:ffff88803418fe80 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 1ffff110011d4e87 RDX: 0000000000000002 RSI: ffffffff8348309f RDI: ffff888008ea7438 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888008ea7410 R13: 0000000000000000 R14: 1ffff11006831fd1 R15: dffffc0000000000 __x64_sys_socket+0x73/0xb0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fb578e0ab19 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:00007fb576380188 EFLAGS: 00000246 ORIG_RAX: 0000000000000029 RAX: ffffffffffffffda RBX: 00007fb578f1df60 RCX: 00007fb578e0ab19 RDX: 0000000000000000 RSI: 0000000000000002 RDI: 0000000000000002 RBP: 00007fb578e64f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdc5310eaf R14: 00007fb576380300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: e8 21 cb 51 fd callq 0xfd51cb26 5: 48 8b 34 24 mov (%rsp),%rsi 9: eb c2 jmp 0xffffffcd b: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1) 12: 00 00 00 00 16: 90 nop 17: 90 nop 18: 90 nop 19: 90 nop 1a: 90 nop 1b: 90 nop 1c: 90 nop 1d: 90 nop 1e: 90 nop 1f: 90 nop 20: 90 nop 21: 90 nop 22: 90 nop 23: 90 nop 24: 90 nop 25: 90 nop 26: f3 0f 1e fa endbr64 * 2a: 41 56 push %r14 <-- trapping instruction 2c: 49 89 fe mov %rdi,%r14 2f: 41 55 push %r13 31: 41 54 push %r12 33: 55 push %rbp 34: 53 push %rbx 35: 48 83 ec 08 sub $0x8,%rsp 39: 48 85 d2 test %rdx,%rdx 3c: 74 5c je 0x9a 3e: 4c rex.WR 3f: 8d .byte 0x8d