watchdog: BUG: soft lockup - CPU#0 stuck for 26s! [syz-executor.4:7861] Modules linked in: irq event stamp: 4658143 hardirqs last enabled at (4658142): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4658143): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4578356): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4578359): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 7861 Comm: syz-executor.4 Not tainted 6.1.0-rc6-next-20221124 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x97/0x2130 Code: f8 17 00 00 49 8b 46 58 48 89 44 24 08 49 8d 46 48 48 89 c2 48 89 04 24 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 <0f> 85 93 17 00 00 49 8b 46 48 bf 01 00 00 00 48 89 44 24 10 e8 80 RSP: 0018:ffff88806ce097c8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: 1ffff1100d9c1312 RSI: ffffffff81182aa9 RDI: ffff88806ce09848 RBP: ffff88806ce098a0 R08: ffffffff8606067a R09: ffffffff8606067e R10: ffffed100d9c1316 R11: ffff88806ce09888 R12: ffff88806ce09910 R13: 0000000000000000 R14: ffff88806ce09848 R15: ffff888008441c80 FS: 00007f1275363700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f12c3f123a4 CR3: 000000003835e000 CR4: 0000000000350ef0 Call Trace: 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+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:__module_text_address+0x4/0x1b0 Code: 5d 4c 89 e0 41 5c e9 3f c9 09 03 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 66 0f 1f 00 <41> 54 55 53 48 89 fb e8 a0 bc 11 00 4c 8b 25 89 a8 09 04 48 89 df RSP: 0018:ffff88801df376b8 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: 00007f1277e0eb19 RCX: 1ffffffff0f380e8 RDX: 1ffff11002166c70 RSI: ffffffff81374b8f RDI: 00007f1277e0eb19 RBP: 00007f1277e0eb19 R08: 0000000000000007 R09: ffffffffff600000 R10: 00007f1277e0e000 R11: 0000000000038001 R12: ffff88801df377e0 R13: 0000000000000000 R14: ffff888010b35040 R15: ffff88800d006870 is_module_text_address+0x21/0x70 kernel_text_address+0x35/0xc0 __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x90/0xd0 __create_object+0x389/0xc10 kmem_cache_alloc_bulk+0x409/0x790 mas_alloc_nodes+0x2ff/0x800 mas_node_count_gfp+0x106/0x140 mas_expected_entries+0x117/0x210 dup_mmap+0x45d/0x10b0 copy_process+0x6b69/0x7220 kernel_clone+0xeb/0x950 __do_sys_fork+0x80/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f1277e0eb19 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:00007f1275363188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f1277f22020 RCX: 00007f1277e0eb19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f1277e68f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc9bbcb32f R14: 00007f1275363300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7850 Comm: syz-executor.7 Not tainted 6.1.0-rc6-next-20221124 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__sanitizer_cov_trace_const_cmp1+0x8/0x20 Code: bf 06 00 00 00 e9 b8 fe ff ff 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 48 8b 0c 24 <40> 0f b6 d6 40 0f b6 f7 bf 01 00 00 00 e9 86 fe ff ff 66 0f 1f 44 RSP: 0018:ffff88806cf09348 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff88806cf2b8c0 RCX: ffffffff813948ca RDX: ffff8880466fd040 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffff888046c547e0 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000000000000 R14: ffff88806cf2b8c0 R15: dffffc0000000000 FS: 00007f626b948700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005558cea45628 CR3: 0000000036724000 CR4: 0000000000350ee0 Call Trace: enqueue_hrtimer+0x27a/0x350 __hrtimer_run_queues+0x93a/0xba0 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 49 4e 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 64 75 49 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 64 75 49 86 49 RSP: 0018:ffff88806cf095f0 EFLAGS: 00000246 RAX: 0000000000000007 RBX: 0000000000000001 RCX: 00000000000b4ab5 RDX: 0000000000036014 RSI: 0000000000036014 RDI: ffffffff8656f5b4 RBP: ffff88806cf096c8 R08: ffffffff86465a5e R09: ffffffff86465a62 R10: ffff88806cf09ff8 R11: 0000000000038001 R12: ffff88806cf096b1 R13: ffff88806cf096d0 R14: ffff88806cf09670 R15: ffffffff84601449 arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_slab_alloc+0x5c/0x70 kmem_cache_alloc+0x1e0/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc_node+0x282/0x420 __alloc_skb+0x21a/0x310 skb_copy+0x13d/0x3d0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xb6d/0x1360 mac80211_hwsim_tx_frame+0x1ee/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:put_cpu_partial+0x115/0x1c0 Code: 39 43 28 75 61 48 c7 43 28 00 00 00 00 48 c7 c6 10 7b 7c 81 48 89 df e8 29 8f af ff 48 85 ed 74 06 e8 0f a2 d3 ff fb 4d 85 ed <74> 21 5b 4c 89 ee 5d 4c 89 e7 41 5c 41 5d 41 5e 41 5f e9 54 fa ff RSP: 0018:ffff88803e5079d0 EFLAGS: 00000246 RAX: 0000000000078bf1 RBX: ffff88806cf3d8e0 RCX: 1ffffffff0ba1e21 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000200 R08: 0000000000000001 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88800844f780 R13: 0000000000000000 R14: ffffea00005f7800 R15: 0000000000000006 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x4c/0x70 kmem_cache_alloc+0x1e0/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc+0x272/0x410 copy_process+0x1f5b/0x7220 kernel_clone+0xeb/0x950 __do_sys_fork+0x80/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f626e3d2b19 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:00007f626b948188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007f626e4e5f60 RCX: 00007f626e3d2b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007f626e42cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffdfee4e95f R14: 00007f626b948300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 2 bytes skipped: 0: 00 00 add %al,(%rax) 2: 49 8b 46 58 mov 0x58(%r14),%rax 6: 48 89 44 24 08 mov %rax,0x8(%rsp) b: 49 8d 46 48 lea 0x48(%r14),%rax f: 48 89 c2 mov %rax,%rdx 12: 48 89 04 24 mov %rax,(%rsp) 16: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 1d: fc ff df 20: 48 c1 ea 03 shr $0x3,%rdx 24: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) * 28: 0f 85 93 17 00 00 jne 0x17c1 <-- trapping instruction 2e: 49 8b 46 48 mov 0x48(%r14),%rax 32: bf 01 00 00 00 mov $0x1,%edi 37: 48 89 44 24 10 mov %rax,0x10(%rsp) 3c: e8 .byte 0xe8 3d: 80 .byte 0x80