watchdog: BUG: soft lockup - CPU#1 stuck for 24s! [syz-executor.1:53579] Modules linked in: irq event stamp: 5403023 hardirqs last enabled at (5403022): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (5403023): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (5288636): [] irq_exit_rcu+0x93/0xc0 softirqs last disabled at (5288639): [] irq_exit_rcu+0x93/0xc0 CPU: 1 PID: 53579 Comm: syz-executor.1 Not tainted 6.5.0-rc7-next-20230821 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__create_object+0x2a8/0xc90 Code: 0f 85 75 09 00 00 48 c7 c0 00 f2 40 85 48 ba 00 00 00 00 00 fc ff df 41 c7 87 b4 00 00 00 00 00 00 00 48 c1 e8 03 80 3c 10 00 <0f> 85 7d 08 00 00 49 8d bf d0 00 00 00 48 8b 1d 84 0a ba 03 48 b8 RSP: 0018:ffff88806cf09a68 EFLAGS: 00000246 RAX: 1ffffffff0a81e40 RBX: 0000000000000001 RCX: 1ffff1100569d5d0 RDX: dffffc0000000000 RSI: 0000000000000004 RDI: ffff88802b4eaef4 RBP: 00000000000000e8 R08: 0000000000000001 R09: ffffed100569d5da R10: ffff88802b4eaed3 R11: 0000000000000001 R12: ffff8880408433c0 R13: 0000000000000000 R14: ffff88802b4eae88 R15: ffff88802b4eae40 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f56b250e718 CR3: 0000000005482000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7: 0000000000000600 Call Trace: kmem_cache_alloc_node+0x23d/0x3b0 __alloc_skb+0x28c/0x330 __netdev_alloc_skb+0x72/0x370 __ieee80211_beacon_get+0x3f6/0xfc0 ieee80211_beacon_get_tim+0xa1/0x550 mac80211_hwsim_beacon_tx+0x402/0x730 __iterate_interfaces+0x2d3/0x580 ieee80211_iterate_active_interfaces_atomic+0x73/0x1c0 mac80211_hwsim_beacon+0x105/0x200 __hrtimer_run_queues+0x59d/0xb60 hrtimer_run_softirq+0x14c/0x310 __do_softirq+0x1b7/0x7d4 irq_exit_rcu+0x93/0xc0 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:write_comp_data+0x3c/0x90 Code: 81 e6 00 01 00 00 65 48 8b 14 25 80 8d 03 00 a9 00 01 ff 00 74 0e 85 f6 74 59 8b 82 9c 14 00 00 85 c0 74 4f 8b 82 78 14 00 00 <83> f8 03 75 44 48 8b 82 80 14 00 00 8b 92 7c 14 00 00 48 8b 38 48 RSP: 0018:ffff888009367728 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 00007f662c86f000 RCX: ffffffff8172c51a RDX: ffff888039d39b40 RSI: 0000000000000000 RDI: 0000000000000006 RBP: 00007f662c8de000 R08: 0000000000000006 R09: 00007f662c86f000 R10: 00007f662c8de000 R11: 0000000000000001 R12: 0000000000000000 R13: ffff8880455ef000 R14: ffff8880455ef378 R15: dffffc0000000000 unmap_page_range+0x99a/0x2300 unmap_single_vma+0x19a/0x2b0 unmap_vmas+0x1b2/0x300 exit_mmap+0x16a/0x9b0 mmput+0xd5/0x390 do_exit+0x99f/0x2740 do_group_exit+0xd4/0x2a0 get_signal+0x2693/0x2720 arch_do_signal_or_restart+0x81/0x790 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x6e/0xd8 RIP: 0033:0x7f662eb66b19 Code: Unable to access opcode bytes at 0x7f662eb66aef. RSP: 002b:00007f662c0dc188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000005 RBX: 00007f662ec79f60 RCX: 00007f662eb66b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000080 RBP: 00007f662ebc0f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffc05b4b14f R14: 00007f662c0dc300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 skipped: idling at default_idle+0x1e/0x30 ---------------- Code disassembly (best guess): 0: 0f 85 75 09 00 00 jne 0x97b 6: 48 c7 c0 00 f2 40 85 mov $0xffffffff8540f200,%rax d: 48 ba 00 00 00 00 00 movabs $0xdffffc0000000000,%rdx 14: fc ff df 17: 41 c7 87 b4 00 00 00 movl $0x0,0xb4(%r15) 1e: 00 00 00 00 22: 48 c1 e8 03 shr $0x3,%rax 26: 80 3c 10 00 cmpb $0x0,(%rax,%rdx,1) * 2a: 0f 85 7d 08 00 00 jne 0x8ad <-- trapping instruction 30: 49 8d bf d0 00 00 00 lea 0xd0(%r15),%rdi 37: 48 8b 1d 84 0a ba 03 mov 0x3ba0a84(%rip),%rbx # 0x3ba0ac2 3e: 48 rex.W 3f: b8 .byte 0xb8