watchdog: BUG: soft lockup - CPU#0 stuck for 24s! [syz-executor.0:5847] Modules linked in: irq event stamp: 4773181 hardirqs last enabled at (4773180): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (4773181): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (4752516): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (4752519): [] __irq_exit_rcu+0x11b/0x180 CPU: 0 PID: 5847 Comm: syz-executor.0 Not tainted 6.1.0-rc6-next-20221122 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x1fd/0x2130 Code: 48 89 54 24 28 48 89 74 24 20 44 89 5c 24 18 e8 a9 47 6a 00 48 8b 54 24 28 48 8b 74 24 20 44 8b 5c 24 18 8b 0c 95 48 68 49 86 <8d> 56 01 48 b8 00 00 00 00 00 fc ff df 48 8d 3c 95 48 68 49 86 49 RSP: 0018:ffff88806ce09698 EFLAGS: 00000246 RAX: 0000000000000003 RBX: 0000000000000002 RCX: 0000000000087a84 RDX: 0000000000024a1e RSI: 0000000000024a1e RDI: ffffffff865290c0 RBP: ffff88806ce09770 R08: ffffffff860f4cce R09: ffffffff860f4cd2 R10: ffffed100d9c12f0 R11: 0000000000038001 R12: ffff88806ce09759 R13: ffff88806ce09778 R14: ffff88806ce09718 R15: ffffffff834a1e09 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555556d43708 CR3: 000000003aa84000 CR4: 0000000000350ef0 Call Trace: 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_node+0x1f4/0x420 __alloc_skb+0x21a/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:_raw_spin_unlock_irqrestore+0x32/0x60 Code: 48 83 c7 18 53 48 89 f3 48 8b 74 24 10 e8 a6 53 eb fc 48 89 ef e8 6e cb eb fc 80 e7 02 74 06 e8 a4 5e 0f fd fb bf 01 00 00 00 19 27 e1 fc 65 8b 05 ba d1 c2 7b 85 c0 74 07 5b 5d e9 2b 29 00 RSP: 0018:ffff88804861f570 EFLAGS: 00000206 RAX: 000000000028916f RBX: 0000000000000246 RCX: ffffffff812b6ccf RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000001 RBP: ffff88800ed2e050 R08: 0000000000000001 R09: ffffffff8763186f R10: fffffbfff0ec630d R11: 0000000000000001 R12: 0000000000000005 R13: dffffc0000000000 R14: 0000000000000004 R15: ffffea0000c94dc0 release_pages+0x9ab/0x1040 tlb_batch_pages_flush+0xa8/0x1b0 unmap_page_range+0x164b/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f01d5e38b19 Code: Unable to access opcode bytes at 0x7f01d5e38aef. RSP: 002b:00007f01d33ae188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000006 RBX: 00007f01d5f4bf60 RCX: 00007f01d5e38b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f01d5e92f6d R08: 000000000000000b R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffeb04f781f R14: 00007f01d33ae300 R15: 0000000000022000 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 5825 Comm: syz-executor.7 Not tainted 6.1.0-rc6-next-20221122 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:__lock_acquire+0x43d/0x5e70 Code: 02 84 c0 74 06 0f 8e 98 11 00 00 48 8b 54 24 38 44 0f b6 b5 b8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 c1 ea 03 0f b6 04 02 <84> c0 74 08 3c 03 0f 8e 3c 11 00 00 41 0f b7 6d 20 66 81 e5 ff 1f RSP: 0018:ffff88806cf09540 EFLAGS: 00000012 RAX: 0000000000000000 RBX: ffff888048732420 RCX: ffffffff812ba44a RDX: 1ffff110090e6497 RSI: 0000000000000008 RDI: ffffffff87636218 RBP: ffffffff87636160 R08: 0000000000000000 R09: ffffffff8763184f R10: fffffbfff0ec6309 R11: 0000000000000001 R12: ffff888048731ac0 R13: ffff888048732498 R14: 0000000000000002 R15: 0000000000046000 FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000c000695000 CR3: 000000000d57c000 CR4: 0000000000350ee0 Call Trace: lock_acquire+0x1a6/0x530 _raw_spin_lock_irq+0x36/0x50 __hrtimer_run_queues+0x1ee/0xba0 hrtimer_interrupt+0x319/0x770 __sysvec_apic_timer_interrupt+0x148/0x500 sysvec_apic_timer_interrupt+0x3f/0xc0 asm_sysvec_apic_timer_interrupt+0x1a/0x20 RIP: 0010:queued_spin_lock_slowpath+0x128/0xc80 Code: 00 00 00 65 48 2b 04 25 28 00 00 00 0f 85 cd 0a 00 00 48 81 c4 88 00 00 00 5b 5d 41 5c 41 5d 41 5e 41 5f e9 be 1f 00 00 f3 90 71 ff ff ff 44 8b 74 24 48 41 81 fe 00 01 00 00 0f 84 e5 00 00 RSP: 0018:ffff88806cf09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8440c04b RDX: fffffbfff0b48d15 RSI: 0000000000000004 RDI: ffffffff85a468a0 RBP: ffffffff85a468a0 R08: 0000000000000000 R09: ffffffff85a468a3 R10: fffffbfff0b48d14 R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48d14 R14: 0000000000000001 R15: 1ffff1100d9e1346 do_raw_spin_lock+0x1e0/0x270 mac80211_hwsim_tx_frame_no_nl.isra.0+0x6f1/0x1360 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:do_raw_spin_unlock+0x24/0x220 Code: 90 90 90 90 90 90 66 0f 1f 00 48 b8 00 00 00 00 00 fc ff df 41 54 55 53 48 89 fb 48 83 c7 04 48 89 fa 48 c1 ea 03 0f b6 14 02 <48> 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 b9 01 00 00 81 RSP: 0018:ffff88801a65f6d0 EFLAGS: 00000217 RAX: dffffc0000000000 RBX: ffff888021458a80 RCX: ffff88801a65f678 RDX: 0000000000000000 RSI: 0000000000000001 RDI: ffff888021458a84 RBP: ffff888021458a80 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: ffffffff85d12310 R13: 0000000000000004 R14: ffff88801662a7a0 R15: ffff88801a65fad8 _raw_spin_unlock+0x1e/0x50 unmap_page_range+0xd42/0x2c10 unmap_single_vma+0x190/0x2a0 unmap_vmas+0x226/0x380 exit_mmap+0x158/0x680 mmput+0xd5/0x390 do_exit+0x99b/0x2720 do_group_exit+0xd4/0x2a0 get_signal+0x21a5/0x22e0 arch_do_signal_or_restart+0x79/0x5a0 exit_to_user_mode_prepare+0x131/0x1a0 syscall_exit_to_user_mode+0x1d/0x50 do_syscall_64+0x4c/0x90 entry_SYSCALL_64_after_hwframe+0x72/0xdc RIP: 0033:0x7f14c89f5b19 Code: Unable to access opcode bytes at 0x7f14c89f5aef. RSP: 002b:00007f14c5f6b188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: fffffffffffffe00 RBX: 00007f14c8b08f60 RCX: 00007f14c89f5b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000003 RBP: 00007f14c8a4ff6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000000005f1 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffd6d8cc9cf R14: 00007f14c5f6b300 R15: 0000000000022000 I/O error, dev loop2, sector 264064 op 0x0:(READ) flags 0x80700 phys_seg 1 prio class 2 ---------------- Code disassembly (best guess): 0: 48 89 54 24 28 mov %rdx,0x28(%rsp) 5: 48 89 74 24 20 mov %rsi,0x20(%rsp) a: 44 89 5c 24 18 mov %r11d,0x18(%rsp) f: e8 a9 47 6a 00 callq 0x6a47bd 14: 48 8b 54 24 28 mov 0x28(%rsp),%rdx 19: 48 8b 74 24 20 mov 0x20(%rsp),%rsi 1e: 44 8b 5c 24 18 mov 0x18(%rsp),%r11d 23: 8b 0c 95 48 68 49 86 mov -0x79b697b8(,%rdx,4),%ecx * 2a: 8d 56 01 lea 0x1(%rsi),%edx <-- trapping instruction 2d: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 34: fc ff df 37: 48 8d 3c 95 48 68 49 lea -0x79b697b8(,%rdx,4),%rdi 3e: 86 3f: 49 rex.WB