watchdog: BUG: soft lockup - CPU#0 stuck for 22s! [syz-executor.2:7674] Modules linked in: irq event stamp: 4889673 hardirqs last enabled at (4889672): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4889673): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4842548): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4842551): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 7674 Comm: syz-executor.2 Not tainted 6.2.0-rc3-next-20230111 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:kasan_quarantine_put+0x91/0x1f0 Code: c7 45 00 00 00 00 00 48 03 58 10 48 89 58 10 48 81 fb 00 00 10 00 77 63 41 bc 01 00 00 00 4d 85 ed 74 43 e8 01 ed d2 ff fb 5b <44> 89 e0 5d 41 5c 41 5d 41 5e e9 54 f1 c6 02 e8 2b ee d2 ff 48 c7 RSP: 0018:ffff88806ce09c50 EFLAGS: 00000206 RAX: 00000000004a9c44 RBX: ffff888044df7b40 RCX: ffffffff812b79df RDX: 0000000000000000 RSI: 0000000000000100 RDI: 0000000000000000 RBP: ffff888044df7b40 R08: 0000000000000001 R09: ffffffff87655977 R10: fffffbfff0ecab2e R11: 0000000000000001 R12: 0000000000000001 R13: 0000000000000200 R14: 00000000000206f0 R15: ffff888043c68e30 FS: 00007fa986e58700(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 00000000463c6000 CR4: 0000000000350ef0 Call Trace: kmem_cache_free+0xff/0x510 kfree_skbmem+0xef/0x1b0 consume_skb+0xd8/0x170 mac80211_hwsim_tx_frame+0x1f6/0x2a0 mac80211_hwsim_beacon_tx+0x566/0xb10 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x54b/0xcb0 hrtimer_run_softirq+0x176/0x350 __do_softirq+0x1c7/0x913 __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:__slab_free+0x77/0x380 Code: e8 1f 4d 85 e4 66 89 5c 24 48 89 04 24 41 0f 94 c3 66 85 db 74 05 45 84 db 74 06 80 3c 24 00 74 3c 41 8b 7d 08 4c 8b 4c 24 48 <4d> 89 f0 4c 89 e2 48 89 ee e8 5b b7 ff ff 84 c0 74 a5 44 0f b6 24 RSP: 0018:ffff888039707540 EFLAGS: 00000246 RAX: 0000000000000001 RBX: 0000000080150013 RCX: 0000000080150014 RDX: ffff888019eed318 RSI: ffffea000067bb00 RDI: 000000004c060000 RBP: ffffea000067bb00 R08: 0000000000000001 R09: 0000000080150013 R10: ffffea000067bb00 R11: 0000000000000000 R12: ffff888019eeda70 R13: ffff8880087833c0 R14: ffff888019eed318 R15: ffff888019eed318 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x49/0x70 kmem_cache_alloc+0x172/0x300 ptlock_alloc+0x21/0x70 pte_alloc_one+0x6c/0x200 __pte_alloc+0x6d/0x210 copy_page_range+0x1c29/0x4570 dup_mmap+0xa4a/0xfc0 copy_process+0x3b05/0x7390 kernel_clone+0xeb/0x8c0 __do_sys_fork+0x80/0xc0 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fa9898e2b19 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:00007fa986e58188 EFLAGS: 00000246 ORIG_RAX: 0000000000000039 RAX: ffffffffffffffda RBX: 00007fa9899f5f60 RCX: 00007fa9898e2b19 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 00007fa98993cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffff00b948f R14: 00007fa986e58300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at default_idle+0xf/0x20 ---------------- Code disassembly (best guess): 0: c7 45 00 00 00 00 00 movl $0x0,0x0(%rbp) 7: 48 03 58 10 add 0x10(%rax),%rbx b: 48 89 58 10 mov %rbx,0x10(%rax) f: 48 81 fb 00 00 10 00 cmp $0x100000,%rbx 16: 77 63 ja 0x7b 18: 41 bc 01 00 00 00 mov $0x1,%r12d 1e: 4d 85 ed test %r13,%r13 21: 74 43 je 0x66 23: e8 01 ed d2 ff callq 0xffd2ed29 28: fb sti 29: 5b pop %rbx * 2a: 44 89 e0 mov %r12d,%eax <-- trapping instruction 2d: 5d pop %rbp 2e: 41 5c pop %r12 30: 41 5d pop %r13 32: 41 5e pop %r14 34: e9 54 f1 c6 02 jmpq 0x2c6f18d 39: e8 2b ee d2 ff callq 0xffd2ee69 3e: 48 rex.W 3f: c7 .byte 0xc7