DUID 00:04:23:4d:e4:fa:b8:c3:fe:21:2f:2a:1f:53:75:cb:fb:25 forked to background, child pid 4583 [ 105.451490][ T4584] 8021q: adding VLAN 0 to HW filter on device bond0 [ 105.516250][ T4584] eql: remember to turn off Van-Jacobson compression on your slave devices Starting sshd: OK syzkaller syzkaller login: [ 110.493948][ T114] cfg80211: failed to load regulatory.db Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. 2023/02/16 22:01:09 fuzzer started 2023/02/16 22:01:10 dialing manager at 10.128.0.169:46859 [ 152.227721][ T5004] cgroup: Unknown subsys name 'net' [ 152.395445][ T5004] cgroup: Unknown subsys name 'rlimit' 2023/02/16 22:01:11 syscalls: 3449 2023/02/16 22:01:11 code coverage: enabled 2023/02/16 22:01:11 comparison tracing: enabled 2023/02/16 22:01:11 extra coverage: enabled 2023/02/16 22:01:11 delay kcov mmap: enabled 2023/02/16 22:01:11 setuid sandbox: enabled 2023/02/16 22:01:11 namespace sandbox: enabled 2023/02/16 22:01:11 Android sandbox: 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2023/02/16 22:01:30 fetching corpus: 14400, signal 235019/408026 (executing program) [ 170.982311][ C1] ===================================================== [ 170.989477][ C1] BUG: KMSAN: uninit-value in native_apic_mem_write+0x72/0x90 [ 170.997030][ C1] native_apic_mem_write+0x72/0x90 [ 171.002223][ C1] sysvec_reschedule_ipi+0x35/0x120 [ 171.007513][ C1] asm_sysvec_reschedule_ipi+0x1f/0x30 [ 171.013068][ C1] kmsan_get_shadow_origin_ptr+0xa/0xa0 [ 171.018720][ C1] __msan_metadata_ptr_for_store_4+0x27/0x40 [ 171.024972][ C1] __copy_skb_header+0x24d/0xac0 [ 171.029994][ C1] __skb_clone+0xa2/0xa40 [ 171.034400][ C1] skb_clone+0x4a9/0x670 [ 171.038728][ C1] dev_queue_xmit_nit+0x523/0x1400 [ 171.043931][ C1] dev_hard_start_xmit+0x21d/0xb50 [ 171.049140][ C1] sch_direct_xmit+0x5f0/0x1400 [ 171.054180][ C1] __dev_queue_xmit+0x3c80/0x6290 [ 171.059302][ C1] lapbeth_data_transmit+0x569/0x5a0 [ 171.064697][ C1] lapb_data_transmit+0xd7/0x140 [ 171.069703][ C1] lapb_transmit_buffer+0x3e1/0x480 [ 171.074998][ C1] lapb_send_control+0x78a/0x840 [ 171.080075][ C1] lapb_t1timer_expiry+0xc36/0xe80 [ 171.085385][ C1] call_timer_fn+0x8d/0x580 [ 171.089989][ C1] __run_timers+0x94f/0x11c0 [ 171.094767][ C1] run_timer_softirq+0x75/0xf0 [ 171.099619][ C1] __do_softirq+0x211/0x818 [ 171.104208][ C1] __irq_exit_rcu+0x117/0x260 [ 171.109029][ C1] irq_exit_rcu+0x12/0x20 [ 171.113446][ C1] sysvec_apic_timer_interrupt+0x4d/0xc0 [ 171.119155][ C1] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 171.125262][ C1] [ 171.127632][ C1] Uninit was created at: [ 171.132011][ C1] slab_post_alloc_hook+0x271/0xf70 [ 171.137342][ C1] kmem_cache_alloc+0x586/0xb40 [ 171.142273][ C1] skb_clone+0x3ec/0x670 [ 171.146602][ C1] dev_queue_xmit_nit+0x523/0x1400 [ 171.151801][ C1] dev_hard_start_xmit+0x21d/0xb50 [ 171.157004][ C1] sch_direct_xmit+0x5f0/0x1400 [ 171.161950][ C1] __dev_queue_xmit+0x3c80/0x6290 [ 171.167130][ C1] lapbeth_data_transmit+0x569/0x5a0 [ 171.172507][ C1] lapb_data_transmit+0xd7/0x140 [ 171.177513][ C1] lapb_transmit_buffer+0x3e1/0x480 [ 171.182810][ C1] lapb_send_control+0x78a/0x840 [ 171.187845][ C1] lapb_t1timer_expiry+0xc36/0xe80 [ 171.193056][ C1] call_timer_fn+0x8d/0x580 [ 171.197650][ C1] __run_timers+0x94f/0x11c0 [ 171.202330][ C1] run_timer_softirq+0x75/0xf0 [ 171.207201][ C1] __do_softirq+0x211/0x818 [ 171.211786][ C1] [ 171.214146][ C1] CPU: 1 PID: 5000 Comm: syz-fuzzer Not tainted 6.2.0-rc8-syzkaller-80998-g9c866a280876 #0 [ 171.224200][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 [ 171.234316][ C1] ===================================================== [ 171.241294][ C1] Disabling lock debugging due to kernel taint [ 171.247487][ C1] Kernel panic - not syncing: kmsan.panic set ... [ 171.253943][ C1] CPU: 1 PID: 5000 Comm: syz-fuzzer Tainted: G B 6.2.0-rc8-syzkaller-80998-g9c866a280876 #0 [ 171.265562][ C1] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 [ 171.275682][ C1] Call Trace: [ 171.279005][ C1] [ 171.281975][ C1] dump_stack_lvl+0x200/0x290 [ 171.286819][ C1] dump_stack+0x29/0x30 [ 171.291080][ C1] panic+0x4fd/0xc70 [ 171.295081][ C1] ? add_taint+0x185/0x210 [ 171.299583][ C1] kmsan_report+0x2d0/0x2d0 [ 171.304216][ C1] ? __msan_warning+0x96/0x110 [ 171.309073][ C1] ? native_apic_mem_write+0x72/0x90 [ 171.314439][ C1] ? sysvec_reschedule_ipi+0x35/0x120 [ 171.319887][ C1] ? asm_sysvec_reschedule_ipi+0x1f/0x30 [ 171.325607][ C1] ? kmsan_get_shadow_origin_ptr+0xa/0xa0 [ 171.331444][ C1] ? __msan_metadata_ptr_for_store_4+0x27/0x40 [ 171.337704][ C1] ? __copy_skb_header+0x24d/0xac0 [ 171.342901][ C1] ? __skb_clone+0xa2/0xa40 [ 171.347495][ C1] ? skb_clone+0x4a9/0x670 [ 171.351995][ C1] ? dev_queue_xmit_nit+0x523/0x1400 [ 171.357427][ C1] ? dev_hard_start_xmit+0x21d/0xb50 [ 171.362809][ C1] ? sch_direct_xmit+0x5f0/0x1400 [ 171.367935][ C1] ? __dev_queue_xmit+0x3c80/0x6290 [ 171.373241][ C1] ? lapbeth_data_transmit+0x569/0x5a0 [ 171.378814][ C1] ? lapb_data_transmit+0xd7/0x140 [ 171.384041][ C1] ? lapb_transmit_buffer+0x3e1/0x480 [ 171.389517][ C1] ? lapb_send_control+0x78a/0x840 [ 171.394733][ C1] ? lapb_t1timer_expiry+0xc36/0xe80 [ 171.400120][ C1] ? call_timer_fn+0x8d/0x580 [ 171.404896][ C1] ? __run_timers+0x94f/0x11c0 [ 171.409752][ C1] ? run_timer_softirq+0x75/0xf0 [ 171.414778][ C1] ? __do_softirq+0x211/0x818 [ 171.419553][ C1] ? __irq_exit_rcu+0x117/0x260 [ 171.424519][ C1] ? irq_exit_rcu+0x12/0x20 [ 171.429106][ C1] ? sysvec_apic_timer_interrupt+0x4d/0xc0 [ 171.434996][ C1] ? asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 171.441276][ C1] ? unwind_get_return_address+0x90/0x130 [ 171.447103][ C1] ? asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 171.453391][ C1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 171.459322][ C1] ? filter_irq_stacks+0xb9/0x230 [ 171.464452][ C1] __msan_warning+0x96/0x110 [ 171.469149][ C1] native_apic_mem_write+0x72/0x90 [ 171.474349][ C1] sysvec_reschedule_ipi+0x35/0x120 [ 171.479635][ C1] asm_sysvec_reschedule_ipi+0x1f/0x30 [ 171.485172][ C1] RIP: 0010:kmsan_get_shadow_origin_ptr+0xa/0xa0 [ 171.491620][ C1] Code: 24 38 ff 74 24 38 9d 41 c6 85 c4 1a 00 00 01 e9 7a fd ff ff 48 c7 c7 43 e4 a0 91 e8 f0 43 57 0e 66 0f 1f 00 55 48 89 e5 41 57 <41> 56 53 41 89 d6 48 81 fe 01 10 00 00 73 39 80 3d 09 66 0c 10 00 [ 171.511327][ C1] RSP: 0000:ffff88811a173378 EFLAGS: 00000286 [ 171.517476][ C1] RAX: 0000000088811c6b RBX: 0000000000000286 RCX: 0000000000000000 [ 171.525515][ C1] RDX: 0000000000000001 RSI: 0000000000000004 RDI: ffff88811c6ba082 [ 171.533577][ C1] RBP: ffff88811a173380 R08: ffffffff8d49ab46 R09: ffff88811c2bac28 [ 171.541684][ C1] R10: ffff88811bebac28 R11: ffff88811c2ba028 R12: 0000000000000000 [ 171.549759][ C1] R13: 0000000088811c6b R14: 00000000ffffffff R15: 00000000fffbffff [ 171.557819][ C1] ? __copy_skb_header+0x1c6/0xac0 [ 171.563060][ C1] __msan_metadata_ptr_for_store_4+0x27/0x40 [ 171.569182][ C1] __copy_skb_header+0x24d/0xac0 [ 171.574244][ C1] __skb_clone+0xa2/0xa40 [ 171.578671][ C1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 171.584607][ C1] skb_clone+0x4a9/0x670 [ 171.588981][ C1] dev_queue_xmit_nit+0x523/0x1400 [ 171.594243][ C1] dev_hard_start_xmit+0x21d/0xb50 [ 171.599497][ C1] sch_direct_xmit+0x5f0/0x1400 [ 171.604590][ C1] __dev_queue_xmit+0x3c80/0x6290 [ 171.609758][ C1] ? llc_sysctl_exit+0x120/0x120 [ 171.614807][ C1] lapbeth_data_transmit+0x569/0x5a0 [ 171.620206][ C1] ? lapbeth_data_indication+0x740/0x740 [ 171.625953][ C1] lapb_data_transmit+0xd7/0x140 [ 171.630984][ C1] lapb_transmit_buffer+0x3e1/0x480 [ 171.636403][ C1] lapb_send_control+0x78a/0x840 [ 171.641462][ C1] lapb_t1timer_expiry+0xc36/0xe80 [ 171.646709][ C1] ? lapb_start_t1timer+0x190/0x190 [ 171.652035][ C1] call_timer_fn+0x8d/0x580 [ 171.656772][ C1] ? lapb_start_t1timer+0x190/0x190 [ 171.662109][ C1] __run_timers+0x94f/0x11c0 [ 171.666853][ C1] ? lapb_start_t1timer+0x190/0x190 [ 171.672211][ C1] ? kmsan_get_shadow_origin_ptr+0x4d/0xa0 [ 171.678138][ C1] run_timer_softirq+0x75/0xf0 [ 171.682999][ C1] ? timers_dead_cpu+0xb90/0xb90 [ 171.688049][ C1] __do_softirq+0x211/0x818 [ 171.692707][ C1] __irq_exit_rcu+0x117/0x260 [ 171.697498][ C1] irq_exit_rcu+0x12/0x20 [ 171.701956][ C1] sysvec_apic_timer_interrupt+0x4d/0xc0 [ 171.707718][ C1] asm_sysvec_apic_timer_interrupt+0x1f/0x30 [ 171.713821][ C1] RIP: 0033:0x410452 [ 171.717774][ C1] Code: 48 8d 51 08 31 db eb 1a 48 8d 05 a9 f9 b6 01 31 db 48 8b 6c 24 10 48 83 c4 18 c3 48 ff c3 48 83 c2 04 48 83 fb 08 73 c1 8b 32 <39> 74 24 30 75 eb 0f b6 34 0b 0f 1f 40 00 40 80 fe 01 76 dd 0f b6 [ 171.737488][ C1] RSP: 002b:000000c001163670 EFLAGS: 00000293 [ 171.743631][ C1] RAX: 0000000000a29080 RBX: 0000000000000000 RCX: 000000c0022e15b0 [ 171.751681][ C1] RDX: 000000c0022e15b8 RSI: 0000000075253864 RDI: 0000000000a29080 [ 171.759741][ C1] RBP: 000000c001163680 R08: 0000000000000038 R09: 0000000000000000 [ 171.767815][ C1] R10: 0000000000000002 R11: 000000c004e3ed4b R12: 0000000000000023 [ 171.775861][ C1] R13: 000000c004e3ed20 R14: 000000c0000001a0 R15: ffffffffffffffff [ 171.783946][ C1] [ 171.787347][ C1] Kernel Offset: disabled [ 171.791887][ C1] Rebooting in 86400 seconds..