watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.2:7067] Modules linked in: irq event stamp: 4399273 hardirqs last enabled at (4399272): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4399273): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4375576): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4375579): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 7067 Comm: syz-executor.2 Not tainted 6.1.0-rc7-next-20221202 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x348/0x2130 Code: 8e c7 15 00 00 41 c6 46 40 01 49 c7 c0 c0 4d 4c 85 48 b8 00 00 00 00 00 fc ff df 4d 8d 48 04 4c 89 ca 48 c1 ea 03 0f b6 04 02 <4c> 89 ca 83 e2 07 38 d0 7f 08 84 c0 0f 85 e4 14 00 00 41 0f b6 40 RSP: 0018:ffff88806cf09778 EFLAGS: 00000213 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff810bad92 RDX: 1ffffffff0c080e0 RSI: ffffffff860406e8 RDI: ffffffff85d4b390 RBP: ffff88806cf098a0 R08: ffffffff86040700 R09: ffffffff86040704 R10: ffffed100d9e1316 R11: 0000000000038001 R12: ffff88806cf09889 R13: ffff88806cf098a8 R14: ffff88806cf09848 R15: ffffffff810bad92 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9ffb419e8f CR3: 0000000046f00000 CR4: 0000000000350ee0 Call Trace: __unwind_start+0x513/0x7c0 arch_stack_walk+0x63/0xf0 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+0x95/0x410 skb_release_data+0x6d8/0x810 consume_skb+0xcb/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:page_remove_rmap+0x285/0x620 Code: 1b 03 00 00 49 8b 5c 24 20 31 ff 81 e3 00 20 00 00 48 89 de e8 9c 93 d6 ff 48 85 db 0f 85 1b 02 00 00 5b 5d 41 5c 41 5d 41 5e 26 97 d6 ff e8 21 97 d6 ff 48 89 eb 31 ff 81 e3 ff 0f 00 00 48 RSP: 0018:ffff88803c89f6f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffffffff81727d14 RDX: ffff888041143580 RSI: 0000000000000000 RDI: 0000000000000007 RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff888017feb818 R13: ffffea00010efe80 R14: ffffea00010efeb0 R15: ffff88803c89fad8 unmap_page_range+0x1fdf/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+0x21b7/0x22f0 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: 0033:0x7ff43568db19 Code: Unable to access opcode bytes at 0x7ff43568daef. RSP: 002b:00007ff432c03188 EFLAGS: 00000246 ORIG_RAX: 00000000000001ac RAX: fffffffffffffffe RBX: 00007ff4357a0f60 RCX: 00007ff43568db19 RDX: 0000000000081000 RSI: 0000000020000200 RDI: ffffffffffffff9c RBP: 00007ff4356e7f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fffed0efc2f R14: 00007ff432c03300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 316 Comm: kworker/u4:6 Not tainted 6.1.0-rc7-next-20221202 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 Workqueue: phy12 ieee80211_iface_work RIP: 0010:check_preemption_disabled+0xe/0x180 Code: 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 41 56 41 55 49 89 f5 41 54 55 48 89 fd 53 <0f> 1f 44 00 00 65 44 8b 25 11 43 c4 7b 65 8b 1d 06 43 c4 7b 81 e3 RSP: 0018:ffff88801bd0f570 EFLAGS: 00000002 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff843f43b5 RDX: ffffed100d9c69e1 RSI: ffffffff848ce060 RDI: ffffffff849ef1a0 RBP: ffffffff849ef1a0 R08: 0000000000000000 R09: ffff88806ce34f03 R10: ffffed100d9c69e0 R11: 0000000000000001 R12: 0000000000000004 R13: ffffffff848ce060 R14: 00000000000e2d84 R15: ffff888018f9fcb0 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055976fe45628 CR3: 0000000020cbe000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: ct_nmi_enter+0xcd/0x1c0 ct_irq_enter_irqson+0x2c/0x50 trace_hardirqs_off+0xae/0x130 _raw_spin_lock_irqsave+0x56/0x60 __create_object+0x3c5/0xc10 __kmem_cache_alloc_node+0x25b/0x400 __kmalloc+0x46/0xc0 ieee802_11_parse_elems_full+0x106/0x1260 ieee802_11_parse_elems_crc.constprop.0+0x99/0xd0 ieee80211_bss_info_update+0x3fd/0xae0 ieee80211_ibss_rx_queued_mgmt+0x1949/0x2f40 ieee80211_iface_work+0x9cb/0xcc0 process_one_work+0xa17/0x16a0 worker_thread+0x63b/0x1260 kthread+0x2f1/0x3a0 ret_from_fork+0x2c/0x50 Process accounting resumed ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 00 00 add %al,(%rax) 2: 41 c6 46 40 01 movb $0x1,0x40(%r14) 7: 49 c7 c0 c0 4d 4c 85 mov $0xffffffff854c4dc0,%r8 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 4d 8d 48 04 lea 0x4(%r8),%r9 1c: 4c 89 ca mov %r9,%rdx 1f: 48 c1 ea 03 shr $0x3,%rdx 23: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 27: 4c 89 ca mov %r9,%rdx <-- trapping instruction 2a: 83 e2 07 and $0x7,%edx 2d: 38 d0 cmp %dl,%al 2f: 7f 08 jg 0x39 31: 84 c0 test %al,%al 33: 0f 85 e4 14 00 00 jne 0x151d 39: 41 rex.B 3a: 0f .byte 0xf 3b: b6 40 mov $0x40,%dh