watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.7:15241] Modules linked in: irq event stamp: 2748101 hardirqs last enabled at (2748100): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2748101): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2678342): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2678345): [] irq_exit_rcu+0x94/0xc0 CPU: 0 UID: 0 PID: 15241 Comm: syz-executor.7 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x2ba/0x2490 Code: 8d bc 3f f0 c3 75 86 48 81 ff ec e7 c1 86 0f 87 a6 13 00 00 44 29 da 48 8d 3c 85 48 01 43 86 4c 89 c6 e8 89 f3 ff ff 48 89 c1 c2 03 00 00 80 3d 04 d9 27 05 00 4d 8d 4f 40 75 3a 48 89 ea c6 RSP: 0018:ffff88806ce09558 EFLAGS: 00000282 RAX: ffffffff868399e2 RBX: 0000000000000001 RCX: ffffffff868399e2 RDX: 0000000000000000 RSI: ffffffff868399e2 RDI: ffffffff864c3a94 RBP: ffff88806ce09620 R08: ffffffff868399e2 R09: ffff88806ce09608 R10: 000000000003c001 R11: 0000000000024e53 R12: ffff88806ce09628 R13: ffff88806ce09610 R14: ffff88806ce09609 R15: ffff88806ce095c8 FS: 00007f431e918700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000563e7e2a5000 CR3: 00000000156b2000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_node_noprof+0x311/0x3e0 kmalloc_reserve+0x189/0x2b0 __alloc_skb+0x162/0x370 __netdev_alloc_skb+0x7a/0x7a0 __ieee80211_beacon_get+0x3f4/0xfc0 ieee80211_beacon_get_tim+0xa6/0x280 mac80211_hwsim_beacon_tx+0x49b/0x950 __iterate_interfaces+0x2cb/0x5d0 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa70 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:qlist_free_all+0x25/0x160 Code: 90 90 90 90 90 48 8b 07 48 85 c0 0f 84 41 01 00 00 41 57 41 56 41 55 49 89 fd 41 54 49 89 f4 55 53 eb 3e 48 63 95 c0 00 00 00 <48> 8b 18 48 89 ef 48 29 d0 48 89 c6 49 89 c6 e8 e7 f0 ff ff 49 89 RSP: 0018:ffff8880338df7b0 EFLAGS: 00000246 RAX: ffff8880187d61b8 RBX: ffff8880187d61b8 RCX: ffffea000061f400 RDX: 0000000000000968 RSI: ffffea000061f401 RDI: ffffffff8183f876 RBP: ffff88800b3bd3c0 R08: 0000000000000001 R09: fffffbfff0fda9d9 R10: ffffffff87ed4ecf R11: 0000000000000000 R12: 0000000000000000 R13: ffff8880338df7e8 R14: ffff88800cf50228 R15: ffff88800cf50228 kasan_quarantine_reduce+0x19c/0x230 __kasan_slab_alloc+0x49/0x70 __kmalloc_noprof+0x195/0x4b0 sk_prot_alloc+0x157/0x280 sk_alloc+0x34/0xb50 tun_chr_open+0x80/0x5f0 misc_open+0x31e/0x420 chrdev_open+0x235/0x690 do_dentry_open+0x71c/0x1420 vfs_open+0x82/0x3f0 path_openat+0x1cf3/0x2980 do_filp_open+0x1b8/0x410 do_sys_openat2+0x164/0x1d0 __x64_sys_openat+0x143/0x200 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f43213a2b19 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:00007f431e918188 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f43214b5f60 RCX: 00007f43213a2b19 RDX: 0000000000000000 RSI: 0000000020000280 RDI: ffffffffffffff9c RBP: 00007f43213fcf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff88c8efdf R14: 00007f431e918300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 UID: 0 PID: 0 Comm: swapper/1 Not tainted 6.12.0-rc3-next-20241016 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:update_group_capacity+0x69a/0x950 Code: 85 6a fe ff ff 0f 1f 44 00 00 e9 67 fe ff ff e8 3c 5b 62 00 e9 fa f9 ff ff e8 32 5b 62 00 e9 b7 fa ff ff e8 58 32 10 00 84 c0 <0f> 85 73 fe ff ff 80 3d 25 8e 13 05 00 0f 85 66 fe ff ff c6 05 18 RSP: 0018:ffff88806cf099b8 EFLAGS: 00000202 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8128daf5 RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88806cf36380 RBP: 0000000000000001 R08: 0000000000000000 R09: fffffbfff0c7e4e9 R10: ffffffff863f274f R11: 00000000f5257d14 R12: ffff888009642d00 R13: 0000000000000400 R14: ffff88806cf3b980 R15: 000000000003a6cc FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fcb7c2fb1e0 CR3: 00000000161fe000 CR4: 0000000000350ef0 Call Trace: sched_balance_find_src_group+0x21f/0x3190 sched_balance_rq+0x397/0x2930 sched_balance_domains+0x673/0xc20 handle_softirqs+0x1b1/0x770 irq_exit_rcu+0x94/0xc0 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0x1e/0x30 Code: 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 0f 1f 44 00 00 eb 0c 0f 1f 44 00 00 0f 00 2d 69 41 40 00 0f 1f 44 00 00 fb f4 e9 5c 28 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff8880096c7e68 EFLAGS: 00000202 RAX: 000000000030b973 RBX: 0000000000000001 RCX: ffffffff848238d7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812ad1ed RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6c70 R10: ffff88806cf36383 R11: 0000000000000000 R12: ffffffff863f2748 R13: 1ffff110012d8fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fd/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 syz-executor.0 (15381): /proc/15381/oom_adj is deprecated, please use /proc/15381/oom_score_adj instead. ---------------- Code disassembly (best guess): 0: 8d bc 3f f0 c3 75 86 lea -0x798a3c10(%rdi,%rdi,1),%edi 7: 48 81 ff ec e7 c1 86 cmp $0xffffffff86c1e7ec,%rdi e: 0f 87 a6 13 00 00 ja 0x13ba 14: 44 29 da sub %r11d,%edx 17: 48 8d 3c 85 48 01 43 lea -0x79bcfeb8(,%rax,4),%rdi 1e: 86 1f: 4c 89 c6 mov %r8,%rsi 22: e8 89 f3 ff ff callq 0xfffff3b0 27: 48 89 c1 mov %rax,%rcx * 2a: e9 c2 03 00 00 jmpq 0x3f1 <-- trapping instruction 2f: 80 3d 04 d9 27 05 00 cmpb $0x0,0x527d904(%rip) # 0x527d93a 36: 4d 8d 4f 40 lea 0x40(%r15),%r9 3a: 75 3a jne 0x76 3c: 48 89 ea mov %rbp,%rdx 3f: c6 .byte 0xc6