watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz-executor.3:5350] Modules linked in: irq event stamp: 3875323 hardirqs last enabled at (3875322): [] asm_sysvec_apic_timer_interrupt+0x1a/0x20 hardirqs last disabled at (3875323): [] sysvec_apic_timer_interrupt+0xf/0xc0 softirqs last enabled at (3869870): [] __irq_exit_rcu+0x11b/0x180 softirqs last disabled at (3869873): [] __irq_exit_rcu+0x11b/0x180 CPU: 1 PID: 5350 Comm: syz-executor.3 Not tainted 6.1.0-rc6-next-20221123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:unwind_next_frame+0x348/0x2130 Code: 8e c7 15 00 00 41 c6 46 40 01 49 c7 c0 40 50 4c 85 48 b8 00 00 00 00 00 fc ff df 4d 8d 48 04 4c 89 ca 48 c1 ea 03 0f b6 04 02 <4c> 89 ca 83 e2 07 38 d0 7f 08 84 c0 0f 85 e4 14 00 00 41 0f b6 40 RSP: 0018:ffff88806cf096b0 EFLAGS: 00000213 RAX: 0000000000000000 RBX: 0000000000000002 RCX: ffffffff811824ca RDX: 1ffffffff0c0c201 RSI: ffffffff86060ff8 RDI: ffffffff85d64958 RBP: ffff88806cf09788 R08: ffffffff8606100a R09: ffffffff8606100e R10: ffffed100d9e12f3 R11: 0000000000038001 R12: ffff88806cf09771 R13: ffff88806cf09790 R14: ffff88806cf09730 R15: ffffffff811824ca FS: 0000000000000000(0000) GS:ffff88806cf00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555606c98 CR3: 0000000039404000 CR4: 0000000000350ee0 Call Trace: arch_stack_walk+0x87/0xf0 stack_trace_save+0x90/0xd0 kasan_save_stack+0x22/0x50 kasan_set_track+0x25/0x30 __kasan_kmalloc+0x82/0x90 __kmalloc_node_track_caller+0x53/0xb0 __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:__sanitizer_cov_trace_const_cmp4+0x4/0x20 Code: d6 0f b7 f7 bf 03 00 00 00 e9 58 fe ff ff 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa <48> 8b 0c 24 89 f2 89 fe bf 05 00 00 00 e9 2a fe ff ff 66 2e 0f 1f RSP: 0018:ffff88802189f6f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: 0000000000000002 RCX: 0000000000000000 RDX: ffff888021a40000 RSI: 0000000000000000 RDI: 0000000000000001 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801a5e5798 R13: ffffea0000ebb6c0 R14: 0000000000000000 R15: ffff88802189fad8 unmap_page_range+0x214b/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: 0033:0x7fbba26d2b19 Code: Unable to access opcode bytes at 0x7fbba26d2aef. RSP: 002b:00007fbb9fc27188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: 0000000000000220 RBX: 00007fbba27e6020 RCX: 00007fbba26d2b19 RDX: 0000000000000000 RSI: 0000000000000003 RDI: 0000000000000004 RBP: 00007fbba272cf6d R08: 0000000000000000 R09: 0000000000000000 R10: 00000000fffffdef R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffe1abbb7bf R14: 00007fbb9fc27300 R15: 0000000000022000 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 5382 Comm: syz-executor.6 Not tainted 6.1.0-rc6-next-20221123 #1 Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS 1.12.0-1 04/01/2014 RIP: 0010:lock_is_held_type+0x6/0x130 Code: 44 24 04 eb b5 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 41 57 <41> 56 41 55 41 bd ff ff ff ff 41 54 55 53 48 83 ec 08 8b 0d 5e 02 RSP: 0018:ffff88806ce09798 EFLAGS: 00000046 RAX: 0000000000000000 RBX: ffff888045a3eb20 RCX: 0000000000000100 RDX: ffff888045d5b580 RSI: 00000000ffffffff RDI: ffff88806ce2b858 RBP: 0000000000000001 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000001 R12: 0000008f9252a704 R13: ffff88806ce2b840 R14: ffff88806ce2b8c0 R15: dffffc0000000000 FS: 0000000000000000(0000) GS:ffff88806ce00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005650b9de9af0 CR3: 000000001a528000 CR4: 0000000000350ef0 Call Trace: __hrtimer_run_queues+0x77a/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 de 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:ffff88806ce09a28 EFLAGS: 00000202 RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffffff8441502b RDX: fffffbfff0b48e8d RSI: 0000000000000004 RDI: ffffffff85a47460 RBP: ffffffff85a47460 R08: 0000000000000000 R09: ffffffff85a47463 R10: fffffbfff0b48e8c R11: 0000000000000001 R12: 0000000000000003 R13: fffffbfff0b48e8c R14: 0000000000000001 R15: 1ffff1100d9c1346 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:rcu_is_watching+0x10/0xb0 Code: e8 35 97 49 00 e9 50 ff ff ff 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 53 48 83 ec 08 65 ff 05 e8 13 d0 7e 4b c7 0b 03 48 c7 c3 00 4f 03 00 48 ba 00 00 00 00 00 fc ff df RSP: 0018:ffff88801d87f5e0 EFLAGS: 00000286 RAX: 0000000000000001 RBX: 0000000000000000 RCX: ffffffff812c0aec RDX: dffffc0000000000 RSI: 0000000000000008 RDI: ffffffff85d11e50 RBP: 1ffff11003b0fec3 R08: 0000000000000000 R09: ffffffff85d11e57 R10: fffffbfff0ba23ca R11: 0000000000000001 R12: 0000000000000001 R13: ffffea0000fd15c0 R14: ffffea0000fd15f0 R15: ffff88801d87fad8 rcu_read_lock_sched_held+0x24/0x80 lock_release+0x54b/0x750 page_remove_rmap+0x23f/0x620 unmap_page_range+0x1fdf/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: 0033:0x7f71419d8b19 Code: Unable to access opcode bytes at 0x7f71419d8aef. RSP: 002b:00007f713ef2d188 EFLAGS: 00000246 ORIG_RAX: 000000000000012a RAX: 0000000000000008 RBX: 00007f7141aec020 RCX: 00007f71419d8b19 RDX: ffffffffffffffff RSI: 0000000000000000 RDI: 0000000020000280 RBP: 00007f7141a32f6d R08: 0000000000000000 R09: 0000000000000000 R10: ffffffffffffffff R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcb39e6fcf R14: 00007f713ef2d300 R15: 0000000000022000 ---------------- Code disassembly (best guess), 3 bytes skipped: 0: 00 00 add %al,(%rax) 2: 41 c6 46 40 01 movb $0x1,0x40(%r14) 7: 49 c7 c0 40 50 4c 85 mov $0xffffffff854c5040,%r8 e: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax 15: fc ff df 18: 4d 8d 48 04 lea 0x4(%r8),%r9 1c: 4c 89 ca mov %r9,%rdx 1f: 48 c1 ea 03 shr $0x3,%rdx 23: 0f b6 04 02 movzbl (%rdx,%rax,1),%eax * 27: 4c 89 ca mov %r9,%rdx <-- trapping instruction 2a: 83 e2 07 and $0x7,%edx 2d: 38 d0 cmp %dl,%al 2f: 7f 08 jg 0x39 31: 84 c0 test %al,%al 33: 0f 85 e4 14 00 00 jne 0x151d 39: 41 rex.B 3a: 0f .byte 0xf 3b: b6 40 mov $0x40,%dh