watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.5:23305] Modules linked in: irq event stamp: 4826203 hardirqs last enabled at (4826202): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4826203): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4808050): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4808053): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 23305 Comm: syz-executor.5 Not tainted 6.1.0-rc7-next-20221202 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__orc_find+0x63/0xf0 Code: eb 0c 48 8d 6b 04 49 89 de 49 39 ec 72 4d 4c 89 e0 48 29 e8 48 89 c2 48 c1 e8 3f 48 c1 fa 02 48 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 RSP: 0018:ffff88806cf09568 EFLAGS: 00000256 RAX: 0000000000000000 RBX: ffffffff85db4058 RCX: ffffffff81708ffb RDX: 0000000000000000 RSI: ffffffff860dda14 RDI: ffffffff85db4058 RBP: ffffffff85db4058 R08: ffffffff860dda14 R09: ffffffff860dd94c R10: ffff88806cf09ff8 R11: 0000000000038001 R12: ffffffff85db4058 R13: ffffffff85db4058 R14: ffffffff85db4058 R15: dffffc0000000000 FS: 00007fdbbf9dd700(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005555566b1c58 CR3: 000000003daa4000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: unwind_next_frame+0x2b1/0x2130 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+0x1e1/0x410 __create_object+0x3d/0xc10 __kmem_cache_alloc_node+0x25b/0x400 __kmalloc_node_track_caller+0x43/0xb0 __alloc_skb+0xe9/0x310 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:___cache_free+0x4e/0xf0 Code: dc ac 03 48 01 d0 48 c1 e8 0c 48 c1 e0 06 48 03 05 37 dc ac 03 48 8b 50 08 49 89 c2 f6 c2 01 0f 85 87 00 00 00 66 90 49 8b 02 c4 02 b8 00 00 00 00 4c 0f 44 d0 48 8b 07 65 48 03 05 e3 15 85 RSP: 0018:ffff88804336fa98 EFLAGS: 00000202 RAX: 0100000000010200 RBX: ffff88801031bb00 RCX: ffff88801031bb00 RDX: ffffea000040c681 RSI: ffff88801031bb00 RDI: ffff88800844f780 RBP: 0000000000000000 R08: ffff88801031bb00 R09: ffffffff817d4d6f R10: ffffea000040c680 R11: 0000000000000001 R12: dffffc0000000000 R13: ffff88804336fae8 R14: ffff88800844f780 R15: ffff88801031bb00 qlist_free_all+0x6d/0x1a0 kasan_quarantine_reduce+0x196/0x230 __kasan_slab_alloc+0x4c/0x70 kmem_cache_alloc+0x1e1/0x410 __create_object+0x3d/0xc10 kmem_cache_alloc+0x273/0x410 vm_area_alloc+0x20/0x100 mmap_region+0x44e/0x1b90 do_mmap+0x82c/0xf50 vm_mmap_pgoff+0x1b3/0x270 ksys_mmap_pgoff+0x3d4/0x500 do_syscall_64+0x3f/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fdbc2467b62 Code: 00 00 00 00 00 0f 1f 00 41 f7 c1 ff 0f 00 00 75 27 55 48 89 fd 53 89 cb 48 85 ff 74 3b 41 89 da 48 89 ef b8 09 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 66 5b 5d c3 0f 1f 00 48 c7 c0 bc ff ff ff 64 RSP: 002b:00007fdbbf9dd0f8 EFLAGS: 00000206 ORIG_RAX: 0000000000000009 RAX: ffffffffffffffda RBX: 0000000000008011 RCX: 00007fdbc2467b62 RDX: 0000000000000003 RSI: 0000000000120140 RDI: 0000000020ff6000 RBP: 0000000020ff6000 R08: 0000000000000004 R09: 0000000000000000 R10: 0000000000008011 R11: 0000000000000206 R12: 00000000200002c0 R13: 0000000020ff8000 R14: 0000000020000140 R15: 0000000020ff6000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0xf/0x20 audit: type=1326 audit(1669979509.327:16): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23451 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdbc2467b19 code=0x0 audit: type=1326 audit(1669979510.154:17): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23451 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdbc2467b19 code=0x0 audit: type=1326 audit(1669979511.262:18): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23592 comm="syz-executor.5" exe="/syz-executor.5" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7fdbc2467b19 code=0x0 audit: type=1326 audit(1669979511.691:19): auid=0 uid=0 gid=0 ses=4 subj=system_u:system_r:kernel_t:s0 pid=23715 comm="syz-executor.7" exe="/syz-executor.7" sig=31 arch=c000003e syscall=202 compat=0 ip=0x7f72d7d16b19 code=0x0 ---------------- Code disassembly (best guess): 0: eb 0c jmp 0xe 2: 48 8d 6b 04 lea 0x4(%rbx),%rbp 6: 49 89 de mov %rbx,%r14 9: 49 39 ec cmp %rbp,%r12 c: 72 4d jb 0x5b e: 4c 89 e0 mov %r12,%rax 11: 48 29 e8 sub %rbp,%rax 14: 48 89 c2 mov %rax,%rdx 17: 48 c1 e8 3f shr $0x3f,%rax 1b: 48 c1 fa 02 sar $0x2,%rdx 1f: 48 01 d0 add %rdx,%rax 22: 48 d1 f8 sar %rax 25: 48 8d 5c 85 00 lea 0x0(%rbp,%rax,4),%rbx * 2a: 48 89 d8 mov %rbx,%rax <-- trapping instruction 2d: 48 c1 e8 03 shr $0x3,%rax 31: 42 0f b6 14 38 movzbl (%rax,%r15,1),%edx 36: 48 89 d8 mov %rbx,%rax 39: 83 e0 07 and $0x7,%eax 3c: 83 c0 03 add $0x3,%eax 3f: 38 .byte 0x38