watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.0:209424] Modules linked in: irq event stamp: 6048087 hardirqs last enabled at (6048086): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (6048087): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (6040464): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (6040467): [] irq_exit_rcu+0x93/0xc0 CPU: 0 PID: 209424 Comm: syz-executor.0 Not tainted 6.5.0-rc6-next-20230818 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x174/0x25d0 Code: f2 83 e2 07 38 d0 7f 08 84 c0 0f 85 81 0b 00 00 48 8b 14 24 0f b6 6b 41 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 17 1e 00 00 31 ff 89 ee 4c 8b 6b 58 e8 89 d4 39 00 40 84 ed RSP: 0018:ffff88806ce09860 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88806ce098e0 RCX: 0000000000000100 RDX: 1ffff1100d9c1327 RSI: ffffffff8113b78f RDI: 0000000000000005 RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000001 R12: 0000000000000002 R13: 0000000000000000 R14: ffff88806ce09921 R15: ffff88806ce09980 FS: 00007f337f05b700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f319ca07000 CR3: 00000000421ec000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0xe6/0x160 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 kasan_save_free_info+0x2b/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0x10d/0x4d0 kfree_skbmem+0xef/0x1b0 consume_skb+0x126/0x2e0 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:mas_next_slot+0x142e/0x1950 Code: a8 12 fa fc 48 8b 7c 24 10 48 89 ee e8 ab 0d fa fc 0f b6 44 24 20 48 39 6c 24 10 0f 45 c3 88 44 24 20 e9 c5 ec ff ff 49 89 ed 98 fa ff ff e8 78 12 fa fc 49 8d 5c 24 50 e9 f0 f1 ff ff e8 69 RSP: 0018:ffff88802b7a7a00 EFLAGS: 00000286 RAX: 0000000000000000 RBX: 0000000000000001 RCX: 0000000000000000 RDX: ffff88802a19d1c0 RSI: ffffffff84536e43 RDI: 0000000000000005 RBP: ffff88802c39b000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff8880092d0a00 R13: ffff88802c39b000 R14: dffffc0000000000 R15: ffff88802b7a7b38 mas_find+0xcb/0x340 acct_collect+0x1ce/0x880 do_exit+0x7a0/0x2740 do_group_exit+0xd4/0x2a0 get_signal+0x2693/0x2720 arch_do_signal_or_restart+0x81/0x790 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f3381ae5b19 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:00007f337f05b188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000007 RBX: 00007f3381bf8f60 RCX: 00007f3381ae5b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007f3381b3ff6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffa7ed822f R14: 00007f337f05b300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: f2 83 e2 07 repnz and $0x7,%edx 4: 38 d0 cmp %dl,%al 6: 7f 08 jg 0x10 8: 84 c0 test %al,%al a: 0f 85 81 0b 00 00 jne 0xb91 10: 48 8b 14 24 mov (%rsp),%rdx 14: 0f b6 6b 41 movzbl 0x41(%rbx),%ebp 18: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1f: fc ff df 22: 48 c1 ea 03 shr $0x3,%rdx 26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 2a: 0f 85 17 1e 00 00 jne 0x1e47 <-- trapping instruction 30: 31 ff xor %edi,%edi 32: 89 ee mov %ebp,%esi 34: 4c 8b 6b 58 mov 0x58(%rbx),%r13 38: e8 89 d4 39 00 callq 0x39d4c6 3d: 40 84 ed test %bpl,%bpl