watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.1:12357] Modules linked in: irq event stamp: 2364713 hardirqs last enabled at (2364712): [] irqentry_exit+0x3b/0x90 hardirqs last disabled at (2364713): [] sysvec_apic_timer_interrupt+0xf/0x80 softirqs last enabled at (2332342): [] handle_softirqs+0x50c/0x770 softirqs last disabled at (2332345): [] __irq_exit_rcu+0xc4/0x100 CPU: 0 UID: 0 PID: 12357 Comm: syz-executor.1 Not tainted 6.13.0-rc1-next-20241205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kernel_text_address+0x13/0xc0 Code: bb 66 0f 1f 44 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 48 89 fd 48 83 ec 08 e8 3f ff ff ff 85 c0 <74> 0f b8 01 00 00 00 48 83 c4 08 5d e9 6c 02 65 03 e8 47 13 17 00 RSP: 0018:ffff88806ce09608 EFLAGS: 00000202 RAX: 0000000000000001 RBX: ffffffff845f1e30 RCX: 0000000000000001 RDX: 1ffff1100d9c12d4 RSI: ffff88806ce09d38 RDI: ffffffff845f1e30 RBP: ffffffff845f1e30 R08: 0000000000000001 R09: ffff88806ce09688 R10: 000000000003c001 R11: 0000000000082696 R12: ffff88806ce09710 R13: 0000000000000000 R14: ffff88803e813780 R15: 0000000000000820 FS: 00007f4146ccc700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f4146c48718 CR3: 000000000e2f2000 CR4: 0000000000350ef0 Call Trace: __kernel_text_address+0xd/0x40 unwind_get_return_address+0x59/0xa0 arch_stack_walk+0x9d/0xf0 stack_trace_save+0x8f/0xc0 kasan_save_stack+0x24/0x50 kasan_save_track+0x14/0x30 __kasan_slab_alloc+0x59/0x70 kmem_cache_alloc_node_noprof+0x14c/0x3e0 __alloc_skb+0x2ad/0x370 skb_copy+0x1d5/0x3b0 mac80211_hwsim_tx_frame_no_nl.isra.0+0xafb/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x70/0x80 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:put_cpu_partial+0x10a/0x1b0 Code: 24 28 75 5b 49 c7 44 24 28 00 00 00 00 4c 89 e7 48 8d 35 00 00 00 00 e8 f4 ac ab ff 4d 85 ed 74 06 e8 1a 75 d5 ff fb 4d 85 f6 <74> 1c 5b 4c 89 f6 48 89 ef 5d 41 5c 41 5d 41 5e e9 c1 fa ff ff 44 RSP: 0018:ffff8880388c77b0 EFLAGS: 00000246 RAX: 00000000001f6f6b RBX: ffffea0000f18600 RCX: 1ffffffff0fe04c7 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff818477d6 RBP: ffff888008c4f780 R08: 0000000000000001 R09: fffffbfff0fde3e9 R10: ffffffff87ef1f4f R11: 0000000000000000 R12: ffff88806ce40390 R13: 0000000000000200 R14: 0000000000000000 R15: ffff88803c618b90 qlist_free_all+0x50/0x160 kasan_quarantine_reduce+0x19f/0x240 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc_noprof+0x13d/0x3d0 __alloc_object+0x2f/0x270 __create_object+0x1d/0x80 kmem_cache_alloc_noprof+0x300/0x3d0 __kernfs_new_node+0xd4/0x850 kernfs_new_node+0x18b/0x250 __kernfs_create_file+0x55/0x360 cgroup_addrm_files+0x51d/0xbe0 css_populate_dir+0x30a/0x490 cgroup_mkdir+0x350/0xfd0 kernfs_iop_mkdir+0x151/0x1e0 vfs_mkdir+0x291/0x4f0 do_mkdirat+0x1a4/0x350 __x64_sys_mkdirat+0x84/0xb0 do_syscall_64+0xbf/0x1d0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f4149756b19 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:00007f4146ccc188 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f4149869f60 RCX: 00007f4149756b19 RDX: 00000000000001ff RSI: 00000000200001c0 RDI: ffffffffffffff9c RBP: 00007f41497b0f6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007fff88ebc99f R14: 00007f4146ccc300 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 6.13.0-rc1-next-20241205 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:srso_safe_ret+0x0/0x20 Code: cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc cc 48 b8 <48> 8d 64 24 08 c3 cc cc 0f ae e8 e8 f0 ff ff ff 0f 0b 66 66 2e 0f RSP: 0018:ffff88806cf099d0 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000000000001 RCX: ffffffff8487108f RDX: fffffbfff0c1b94d RSI: 0000000000000004 RDI: ffffffff860dca60 RBP: ffffffff860dca60 R08: 0000000000000000 R09: fffffbfff0c1b94c R10: ffffffff860dca63 R11: 0000000000000001 R12: 1ffff1100d9e133d R13: 0000000000000003 R14: fffffbfff0c1b94c R15: ffff88806cf09a18 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f7b4e2af010 CR3: 000000000daba000 CR4: 0000000000350ef0 Call Trace: srso_return_thunk+0x5/0x5f queued_spin_lock_slowpath+0xaf/0xb60 do_raw_spin_lock+0x1de/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6d1/0x1320 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x546/0x950 __iterate_interfaces+0x2e0/0x650 ieee80211_iterate_active_interfaces_atomic+0x71/0x1b0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x1ab/0xa80 hrtimer_run_softirq+0x14c/0x310 handle_softirqs+0x1b1/0x770 __irq_exit_rcu+0xc4/0x100 irq_exit_rcu+0x9/0x20 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 e9 95 3d 00 0f 1f 44 00 00 fb f4 e9 fc 2e 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff8880096cfe68 EFLAGS: 00000202 RAX: 00000000002afed5 RBX: 0000000000000001 RCX: ffffffff8484e837 RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff812b180a RBP: dffffc0000000000 R08: 0000000000000001 R09: ffffed100d9e6cba R10: ffff88806cf365d3 R11: 0000000000000000 R12: ffffffff863fae90 R13: 1ffff110012d9fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x6d/0xb0 do_idle+0x2fa/0x3b0 cpu_startup_entry+0x4f/0x60 start_secondary+0x1c1/0x220 common_startup_64+0x12c/0x138 ---------------- Code disassembly (best guess): 0: bb 66 0f 1f 44 mov $0x441f0f66,%ebx 5: 00 00 add %al,(%rax) 7: 90 nop 8: 90 nop 9: 90 nop a: 90 nop b: 90 nop c: 90 nop d: 90 nop e: 90 nop f: 90 nop 10: 90 nop 11: 90 nop 12: 90 nop 13: 90 nop 14: 90 nop 15: 90 nop 16: 90 nop 17: 66 0f 1f 00 nopw (%rax) 1b: 55 push %rbp 1c: 48 89 fd mov %rdi,%rbp 1f: 48 83 ec 08 sub $0x8,%rsp 23: e8 3f ff ff ff callq 0xffffff67 28: 85 c0 test %eax,%eax * 2a: 74 0f je 0x3b <-- trapping instruction 2c: b8 01 00 00 00 mov $0x1,%eax 31: 48 83 c4 08 add $0x8,%rsp 35: 5d pop %rbp 36: e9 6c 02 65 03 jmpq 0x36502a7 3b: e8 47 13 17 00 callq 0x171387