watchdog: BUG: soft lockup - CPU#0 stuck for 21s! [syz-executor.6:26060] Modules linked in: irq event stamp: 7356957 hardirqs last enabled at (7356956): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (7356957): [] sysvec_apic_timer_interrupt+0xf/0x90 softirqs last enabled at (7312814): [] __irq_exit_rcu+0xcc/0x110 softirqs last disabled at (7312817): [] __irq_exit_rcu+0xcc/0x110 CPU: 0 PID: 26060 Comm: syz-executor.6 Not tainted 6.3.0-rc4-next-20230331 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:mac80211_hwsim_tx_frame_no_nl.isra.0+0x8df/0x1330 Code: 4d 8b bc 24 10 3e 00 00 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 ae 07 00 00 4c 23 bb 10 3e 00 00 31 ff 4c 89 fe e8 b1 de 3c fe <4d> 85 ff 0f 84 7f fe ff ff e8 d3 e2 3c fe 49 8d bc 24 18 3e 00 00 RSP: 0018:ffff88806ce09b80 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffff88803363b3e0 RCX: ffffffff830ecf8f RDX: ffff888049fad040 RSI: 0000000000000100 RDI: 0000000000000007 RBP: dffffc0000000000 R08: 0000000000000007 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffff888041e833e0 R13: ffff88804abbfc80 R14: ffff888041e83678 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd6a045bf0 CR3: 000000000ea52000 CR4: 0000000000350ef0 Call Trace: mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __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+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:free_swap_cache+0x33/0x3a0 Code: fd 53 e8 d0 71 d1 ff 48 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 0d 03 00 00 4c 8b 65 08 <31> ff 4c 89 e3 83 e3 01 48 89 de e8 6d 6d d1 ff 48 85 db 0f 85 05 RSP: 0018:ffff88804bd7f650 EFLAGS: 00000246 RAX: dffffc0000000000 RBX: ffff88804d904b78 RCX: 0000000000000000 RDX: 1ffffd40001c1819 RSI: ffffffff817a40a0 RDI: ffffea0000e0c0c8 RBP: ffffea0000e0c0c0 R08: 0000000000000004 R09: 00000000000001fe R10: 000000000000016c R11: 0000000000000001 R12: 0000000000000000 R13: dffffc0000000000 R14: ffff88804d904010 R15: 00000000000001fe free_pages_and_swap_cache+0x60/0xa0 tlb_batch_pages_flush+0xa8/0x1b0 unmap_page_range+0x1c33/0x2f10 unmap_single_vma+0x19a/0x2b0 unmap_vmas+0x233/0x390 exit_mmap+0x15e/0x8b0 mmput+0xd5/0x390 do_exit+0x9c6/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x263c/0x26c0 arch_do_signal_or_restart+0x79/0x590 exit_to_user_mode_prepare+0xeb/0x180 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7fac1b4ebb19 Code: Unable to access opcode bytes at 0x7fac1b4ebaef. RSP: 002b:00007fac18a61218 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 00007fac1b5fef68 RCX: 00007fac1b4ebb19 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 00007fac1b5fef68 RBP: 00007fac1b5fef60 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fac1b5fef6c R13: 00007ffc6417a8af R14: 00007fac18a61300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 0 Comm: swapper/1 Not tainted 6.3.0-rc4-next-20230331 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:queued_spin_lock_slowpath+0x128/0xb20 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 5c 09 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 6e 21 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e4 00 00 RSP: 0018:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8449d31b RDX: fffffbfff0b4abd5 RSI: 0000000000000004 RDI: ffffffff85a55ea0 RBP: ffffffff85a55ea0 R08: 0000000000000000 R09: ffffffff85a55ea3 R10: fffffbfff0b4abd4 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b4abd4 R14: 0000000000000001 R15: 1ffff1100d9e1346 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055e3517dd0d0 CR3: 000000000c6b6000 CR4: 0000000000350ee0 Call Trace: do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6de/0x1330 mac80211_hwsim_tx_frame+0x1ee/0x2a0 mac80211_hwsim_beacon_tx+0x427/0x730 __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+0xcc/0x110 irq_exit_rcu+0x9/0x20 sysvec_apic_timer_interrupt+0x6e/0x90 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:default_idle+0xf/0x20 Code: 4c 01 c7 4c 29 c2 e9 72 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa eb 07 0f 00 2d 53 b9 3a 00 fb f4 e9 cf 2f 02 00 66 66 2e 0f 1f 84 00 00 00 00 00 90 90 90 90 90 RSP: 0018:ffff888008dc7e68 EFLAGS: 00000206 RAX: 0000000000b0d51b RBX: 0000000000000001 RCX: ffffffff8447b50e RDX: 0000000000000000 RSI: 0000000000000000 RDI: ffffffff81285635 RBP: dffffc0000000000 R08: 0000000000000001 R09: ffff88806cf34f83 R10: ffffed100d9e69f0 R11: 0000000000000001 R12: ffffffff85d27b90 R13: 1ffff110011b8fd2 R14: 0000000000000000 R15: 0000000000000000 default_idle_call+0x67/0xa0 do_idle+0x305/0x3c0 cpu_startup_entry+0x18/0x20 start_secondary+0x1ca/0x220 secondary_startup_64_no_verify+0x106/0x10b ---------------- Code disassembly (best guess): 0: 4d 8b bc 24 10 3e 00 mov 0x3e10(%r12),%r15 7: 00 8: 48 89 f8 mov %rdi,%rax b: 48 c1 e8 03 shr $0x3,%rax f: 80 3c 28 00 cmpb $0x0,(%rax,%rbp,1) 13: 0f 85 ae 07 00 00 jne 0x7c7 19: 4c 23 bb 10 3e 00 00 and 0x3e10(%rbx),%r15 20: 31 ff xor %edi,%edi 22: 4c 89 fe mov %r15,%rsi 25: e8 b1 de 3c fe callq 0xfe3cdedb * 2a: 4d 85 ff test %r15,%r15 <-- trapping instruction 2d: 0f 84 7f fe ff ff je 0xfffffeb2 33: e8 d3 e2 3c fe callq 0xfe3ce30b 38: 49 8d bc 24 18 3e 00 lea 0x3e18(%r12),%rdi 3f: 00