watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.4:8098] Modules linked in: irq event stamp: 11255903 hardirqs last enabled at (11255902): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (11255903): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (11135336): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (11135339): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 8098 Comm: syz-executor.4 Not tainted 6.1.0-rc5-next-20221116 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x83/0xf0 Code: 01 d0 48 d1 f8 48 8d 5c 85 00 48 89 d8 48 c1 e8 03 42 0f b6 14 38 48 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 50 48 63 03 <48> 01 d8 48 39 c1 73 b0 4c 8d 63 fc 49 39 ec 73 b3 4d 29 ee 49 c1 RSP: 0018:ffff88806ce097d8 EFLAGS: 00000246 RAX: fffffffffe5eb33c RBX: ffffffff860160f4 RCX: ffffffff84601449 RDX: 0000000000000000 RSI: ffffffff8646bb66 RDI: ffffffff860160d8 RBP: ffffffff860160d8 R08: ffffffff8646bb66 R09: ffffffff86461d5a R10: ffff88806ce09ff8 R11: 0000000000038001 R12: ffffffff86016114 R13: ffffffff860160d8 R14: ffffffff860160d8 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557354dfad88 CR3: 000000000966e000 CR4: 0000000000350ef0 Call Trace: unwind_next_frame+0x2b1/0x2130 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 set_track_prepare+0x74/0xd0 __create_object+0x378/0xc00 kmem_cache_alloc_node+0x282/0x420 __alloc_skb+0x21a/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+0x541/0xb50 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:unmap_page_range+0xbf0/0x2c30 Code: eb 18 48 c1 e8 03 48 c1 e3 06 80 3c 28 00 0f 85 18 18 00 00 48 03 1d ff 1b bd 03 48 8d 7b 28 48 89 f8 48 c1 e8 03 80 3c 28 00 <0f> 85 f2 17 00 00 48 8b 43 28 48 bb 00 f0 ff ff ff ff 0f 00 48 89 RSP: 0018:ffff8880414f7700 EFLAGS: 00000246 RAX: 1ffffd40000ffb1d RBX: ffffea00007fd8c0 RCX: 0000000000000000 RDX: ffff8880344db580 RSI: ffffffff816cc3d9 RDI: ffffea00007fd8e8 RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 000000000001ff63 R13: 000000001ff63067 R14: 0000000000000000 R15: ffff8880414f7ad8 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: 0033:0x7f12f860cb19 Code: Unable to access opcode bytes at 0x7f12f860caef. RSP: 002b:00007f12f5b82188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000004 RBX: 00007f12f871ff60 RCX: 00007f12f860cb19 RDX: 0000000000004042 RSI: 0000000020000100 RDI: ffffffffffffff9c RBP: 00007f12f8666f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff3c02dd8f R14: 00007f12f5b82300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 8110 Comm: syz-executor.7 Not tainted 6.1.0-rc5-next-20221116 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:core_kernel_text+0x81/0xa0 Code: a8 07 b2 04 01 76 0b 44 89 e0 5b 41 5c e9 9b 49 21 03 48 81 fb 00 00 5b 86 72 ec 48 81 fb 00 16 6b 86 73 e3 41 bc 01 00 00 00 <5b> 44 89 e0 41 5c e9 78 49 21 03 48 c7 c7 44 cd d0 85 e8 08 0e 5e RSP: 0018:ffff88806cf09870 EFLAGS: 00000283 RAX: dffffc0000000000 RBX: ffffffff8115a945 RCX: 0000000000000000 RDX: 1ffff1100d9e1324 RSI: ffff88804384fba0 RDI: ffffffff8115a945 RBP: ffffffff8115a945 R08: ffffffff860e3654 R09: ffffffff860e3658 R10: ffff88806cf09ff8 R11: ffff88806cf09908 R12: 0000000000000001 R13: 0000000000000000 R14: ffff888043ee5040 R15: ffff88800878fdc0 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000557354db1668 CR3: 000000000e50a000 CR4: 0000000000350ee0 Call Trace: kernel_text_address+0x11/0xc0 __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_save_free_info+0x2e/0x50 __kasan_slab_free+0x10a/0x190 kmem_cache_free+0xfb/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+0x541/0xb50 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:unmap_single_vma+0xcc/0x2a0 Code: ff db ff 48 8d 45 70 48 89 c2 49 89 c6 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 0f 85 9f 01 00 00 48 83 7d 70 00 <74> 13 e8 6d ff db ff 4c 89 ea 4c 89 e6 48 89 ef e8 1f bd f0 ff e8 RSP: 0018:ffff88804384f888 EFLAGS: 00000286 RAX: dffffc0000000000 RBX: ffff88804384f910 RCX: 0000000000000000 RDX: 1ffff11001d68160 RSI: ffffffff816ce505 RDI: 0000000000000006 RBP: ffff88800eb40a90 R08: 0000000000000006 R09: 0000001b33a20000 R10: 0000001b34a20000 R11: 0000000000000001 R12: 0000001b33a20000 R13: 0000001b34a20000 R14: ffff88800eb40b00 R15: 0000001b33a20000 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: 0033:0x7f3b5fe78b19 Code: Unable to access opcode bytes at 0x7f3b5fe78aef. RSP: 002b:00007f3b5d3ee188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: 0000000000000008 RBX: 00007f3b5ff8bf60 RCX: 00007f3b5fe78b19 RDX: 0000000000105802 RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007f3b5fed2f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff22fd2c5f R14: 00007f3b5d3ee300 R15: 0000000000022000 ---------------- Code disassembly (best guess): 0: 01 d0 add %edx,%eax 2: 48 d1 f8 sar %rax 5: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 16: 48 89 d8 mov %rbx,%rax 19: 83 e0 07 and $0x7,%eax 1c: 83 c0 03 add $0x3,%eax 1f: 38 d0 cmp %dl,%al 21: 7c 04 jl 0x27 23: 84 d2 test %dl,%dl 25: 75 50 jne 0x77 27: 48 63 03 movslq (%rbx),%rax * 2a: 48 01 d8 add %rbx,%rax <-- trapping instruction 2d: 48 39 c1 cmp %rax,%rcx 30: 73 b0 jae 0xffffffe2 32: 4c 8d 63 fc lea -0x4(%rbx),%r12 36: 49 39 ec cmp %rbp,%r12 39: 73 b3 jae 0xffffffee 3b: 4d 29 ee sub %r13,%r14 3e: 49 rex.WB 3f: c1 .byte 0xc1