[ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ 62.023201][ T6730] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6730 [ 62.033151][ T6730] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.033167][ T6730] CPU: 0 PID: 6730 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 62.033181][ T6730] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.033186][ T6730] Call Trace: [ 62.060793][ T6730] dump_stack+0x18f/0x20d [ 62.065132][ T6730] debug_smp_processor_id.cold+0x88/0x9b [[ 62.070758][ T6730] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.076180][ T6730] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.081636][ T6730] ? ext4_inode_to_goal_block+0x2df/0x3f0  OK [0[ 62.087359][ T6730] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.094023][ T6730] ? ext4_ext_release+0x10/0x10 m] [ 62.098930][ T6730] ? down_write_killable+0x170/0x170 [ 62.104497][ T6730] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.109953][ T6730] ext4_map_blocks+0x4cb/0x1640 Started Update U[ 62.114819][ T6730] ? ext4_issue_zeroout+0x1e0/0x1e0 TMP about System[ 62.121379][ T6730] ? rcu_read_lock_sched_held+0x9c/0xd0 Runlevel Change[ 62.128455][ T6730] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.135829][ T6730] ? prandom_u32_state+0xe/0x170 s.[ 62.140785][ T6730] ? __brelse+0x84/0xa0 [ 62.145100][ T6730] ? __ext4_new_inode+0x144/0x55e0 [ 62.150210][ T6730] ext4_getblk+0xad/0x520 [ 62.154696][ T6730] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.160413][ T6730] ? ext4_free_inode+0x1700/0x1700 [ 62.165526][ T6730] ext4_bread+0x7c/0x380 [ 62.169772][ T6730] ? ext4_getblk+0x520/0x520 [ 62.174367][ T6730] ? dquot_get_next_dqblk+0x180/0x180 [ 62.179734][ T6730] ext4_append+0x153/0x360 [ 62.184133][ T6730] ext4_mkdir+0x5e0/0xdf0 [ 62.188452][ T6730] ? ext4_rmdir+0xde0/0xde0 [ 62.192948][ T6730] vfs_mkdir+0x419/0x690 [ 62.197177][ T6730] do_mkdirat+0x21e/0x280 [ 62.201490][ T6730] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.206325][ T6730] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.212368][ T6730] ? do_syscall_64+0x21/0x7d0 [ 62.217024][ T6730] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.222997][ T6730] do_syscall_64+0xf6/0x7d0 [ 62.227629][ T6730] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.233501][ T6730] RIP: 0033:0x7efcfea40687 [ 62.237901][ T6730] Code: Bad RIP value. [ 62.242021][ T6730] RSP: 002b:00007ffe6736fae8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 62.250428][ T6730] RAX: ffffffffffffffda RBX: 0000555a4c432985 RCX: 00007efcfea40687 [ 62.258383][ T6730] RDX: 00007ffe6736f9b0 RSI: 00000000000001ed RDI: 0000555a4c432985 [ 62.266350][ T6730] RBP: 00007efcfea40680 R08: 0000000000000100 R09: 0000000000000000 [ 62.274312][ T6730] R10: 0000555a4c432980 R11: 0000000000000246 R12: 00000000000001ed [ 62.282262][ T6730] R13: 00007ffe6736fc70 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.10.48' (ECDSA) to the list of known hosts. 2020/06/13 17:08:08 fuzzer started 2020/06/13 17:08:08 connecting to host at 10.128.0.26:36275 2020/06/13 17:08:08 checking machine... 2020/06/13 17:08:08 checking revisions... 2020/06/13 17:08:08 testing simple program... syzkaller login: [ 65.579907][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6814 [ 65.589192][ T6814] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 65.595460][ T6814] CPU: 1 PID: 6814 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 65.603467][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.613512][ T6814] Call Trace: [ 65.616809][ T6814] dump_stack+0x18f/0x20d [ 65.621132][ T6814] debug_smp_processor_id.cold+0x88/0x9b [ 65.626758][ T6814] ext4_mb_new_blocks+0xa4d/0x3b70 [ 65.631854][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 65.637299][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 65.642998][ T6814] ext4_ext_map_blocks+0x201b/0x33e0 [ 65.648276][ T6814] ? ext4_ext_release+0x10/0x10 [ 65.653131][ T6814] ? down_write_killable+0x170/0x170 [ 65.658390][ T6814] ? ext4_es_lookup_extent+0x41d/0xd10 [ 65.663830][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 65.668661][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 65.673835][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 65.679373][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 65.685328][ T6814] ? prandom_u32_state+0xe/0x170 [ 65.690240][ T6814] ? __brelse+0x84/0xa0 [ 65.694373][ T6814] ? __ext4_new_inode+0x144/0x55e0 [ 65.699482][ T6814] ext4_getblk+0xad/0x520 [ 65.703816][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 65.709514][ T6814] ? ext4_free_inode+0x1700/0x1700 [ 65.714603][ T6814] ext4_bread+0x7c/0x380 [ 65.718818][ T6814] ? ext4_getblk+0x520/0x520 [ 65.723385][ T6814] ? dquot_get_next_dqblk+0x180/0x180 [ 65.728735][ T6814] ext4_append+0x153/0x360 [ 65.733129][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 65.737449][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 65.741935][ T6814] vfs_mkdir+0x419/0x690 [ 65.746157][ T6814] do_mkdirat+0x21e/0x280 [ 65.750472][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 65.755315][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.761275][ T6814] ? do_syscall_64+0x21/0x7d0 [ 65.765929][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 65.772407][ T6814] do_syscall_64+0xf6/0x7d0 [ 65.776888][ T6814] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 65.782755][ T6814] RIP: 0033:0x4b02a0 [ 65.786628][ T6814] Code: Bad RIP value. [ 65.790667][ T6814] RSP: 002b:000000c0000df4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 65.799048][ T6814] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 65.807004][ T6814] RDX: 00000000000001c0 RSI: 000000c00009eba0 RDI: ffffffffffffff9c [ 65.814952][ T6814] RBP: 000000c0000df510 R08: 0000000000000000 R09: 0000000000000000 [ 65.823691][ T6814] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 65.831655][ T6814] R13: 000000000000005e R14: 000000000000005d R15: 0000000000000100 [ 65.850807][ T28] audit: type=1400 audit(1592068088.817:8): avc: denied { execmem } for pid=6817 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1 [ 65.861317][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6817 [ 65.880785][ T6817] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 65.886668][ T6817] CPU: 1 PID: 6817 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 65.894880][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 65.904922][ T6817] Call Trace: [ 65.908193][ T6817] dump_stack+0x18f/0x20d [ 65.912515][ T6817] debug_smp_processor_id.cold+0x88/0x9b [ 65.918136][ T6817] ext4_mb_new_blocks+0xa4d/0x3b70 [ 65.923239][ T6817] ? ext4_ext_search_right+0x2ca/0xb20 [ 65.928672][ T6817] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 65.934373][ T6817] ext4_ext_map_blocks+0x201b/0x33e0 [ 65.939638][ T6817] ? ext4_ext_release+0x10/0x10 [ 65.944505][ T6817] ? down_write_killable+0x170/0x170 [ 65.949764][ T6817] ? ext4_es_lookup_extent+0x41d/0xd10 [ 65.955207][ T6817] ext4_map_blocks+0x4cb/0x1640 [ 65.960049][ T6817] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 65.965221][ T6817] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 65.970747][ T6817] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 65.976699][ T6817] ? prandom_u32_state+0xe/0x170 [ 65.981626][ T6817] ? __brelse+0x84/0xa0 [ 65.985757][ T6817] ? __ext4_new_inode+0x144/0x55e0 [ 65.990858][ T6817] ext4_getblk+0xad/0x520 [ 65.995176][ T6817] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 66.000874][ T6817] ? ext4_free_inode+0x1700/0x1700 [ 66.005971][ T6817] ext4_bread+0x7c/0x380 [ 66.010189][ T6817] ? ext4_getblk+0x520/0x520 [ 66.014760][ T6817] ? dquot_get_next_dqblk+0x180/0x180 [ 66.020107][ T6817] ? security_transition_sid+0x123/0x190 [ 66.025717][ T6817] ? security_transition_sid+0xed/0x190 [ 66.031241][ T6817] ext4_append+0x153/0x360 [ 66.035636][ T6817] ext4_mkdir+0x5e0/0xdf0 [ 66.039950][ T6817] ? ext4_rmdir+0xde0/0xde0 [ 66.044436][ T6817] vfs_mkdir+0x419/0x690 [ 66.048657][ T6817] do_mkdirat+0x21e/0x280 [ 66.052962][ T6817] ? __ia32_sys_mknod+0xb0/0xb0 [ 66.057804][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.063773][ T6817] ? do_syscall_64+0x21/0x7d0 [ 66.068444][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.074417][ T6817] do_syscall_64+0xf6/0x7d0 [ 66.078896][ T6817] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.084773][ T6817] RIP: 0033:0x45bee7 [ 66.088645][ T6817] Code: Bad RIP value. [ 66.092693][ T6817] RSP: 002b:00007fffe3b045e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 66.101091][ T6817] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 66.109042][ T6817] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fffe3b047c0 [ 66.116986][ T6817] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003a00 [ 66.124942][ T6817] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 66.132889][ T6817] R13: 00007fffe3b047c0 R14: 8421084210842109 R15: 00007fffe3b047cc [ 66.214888][ T6818] IPVS: ftp: loaded support on port[0] = 21 [ 66.251695][ T6818] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6818 [ 66.261345][ T6818] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.267296][ T6818] CPU: 0 PID: 6818 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 66.275504][ T6818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.285541][ T6818] Call Trace: [ 66.288828][ T6818] dump_stack+0x18f/0x20d [ 66.293148][ T6818] debug_smp_processor_id.cold+0x88/0x9b [ 66.298764][ T6818] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.303857][ T6818] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.309357][ T6818] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 66.315061][ T6818] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.320337][ T6818] ? ext4_ext_release+0x10/0x10 [ 66.325225][ T6818] ? down_write_killable+0x170/0x170 [ 66.330486][ T6818] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.336014][ T6818] ext4_map_blocks+0x4cb/0x1640 [ 66.340848][ T6818] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.346036][ T6818] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.351559][ T6818] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.357513][ T6818] ? prandom_u32_state+0xe/0x170 [ 66.362426][ T6818] ? __brelse+0x84/0xa0 [ 66.366570][ T6818] ? __ext4_new_inode+0x144/0x55e0 [ 66.371681][ T6818] ext4_getblk+0xad/0x520 [ 66.376179][ T6818] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 66.381937][ T6818] ? ext4_free_inode+0x1700/0x1700 [ 66.387034][ T6818] ext4_bread+0x7c/0x380 [ 66.391259][ T6818] ? ext4_getblk+0x520/0x520 [ 66.395827][ T6818] ? dquot_get_next_dqblk+0x180/0x180 [ 66.401175][ T6818] ? security_transition_sid+0x123/0x190 [ 66.406781][ T6818] ? security_transition_sid+0xed/0x190 [ 66.412451][ T6818] ext4_append+0x153/0x360 [ 66.416844][ T6818] ext4_mkdir+0x5e0/0xdf0 [ 66.421165][ T6818] ? ext4_rmdir+0xde0/0xde0 [ 66.425687][ T6818] vfs_mkdir+0x419/0x690 [ 66.429906][ T6818] do_mkdirat+0x21e/0x280 [ 66.434213][ T6818] ? __ia32_sys_mknod+0xb0/0xb0 [ 66.439124][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.445081][ T6818] ? do_syscall_64+0x21/0x7d0 [ 66.449819][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.455786][ T6818] do_syscall_64+0xf6/0x7d0 [ 66.460275][ T6818] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.466404][ T6818] RIP: 0033:0x45bee7 [ 66.470281][ T6818] Code: Bad RIP value. [ 66.474320][ T6818] RSP: 002b:00007fffe3b044d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 66.482805][ T6818] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 66.490837][ T6818] RDX: 00007fffe3b04523 RSI: 00000000000001ff RDI: 00007fffe3b04520 [ 66.498807][ T6818] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 66.506762][ T6818] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 66.514718][ T6818] R13: 00007fffe3b04510 R14: 0000000000000000 R15: 00007fffe3b04520 [ 66.568575][ T6818] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6818 [ 66.578185][ T6818] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.584188][ T6818] CPU: 1 PID: 6818 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 66.592424][ T6818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.602477][ T6818] Call Trace: [ 66.605771][ T6818] dump_stack+0x18f/0x20d [ 66.610115][ T6818] debug_smp_processor_id.cold+0x88/0x9b [ 66.615759][ T6818] ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.620896][ T6818] ? ext4_ext_search_right+0x2ca/0xb20 [ 66.626360][ T6818] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 66.632093][ T6818] ext4_ext_map_blocks+0x201b/0x33e0 [ 66.637390][ T6818] ? ext4_ext_release+0x10/0x10 [ 66.642231][ T6818] ? down_write_killable+0x170/0x170 [ 66.647647][ T6818] ? ext4_es_lookup_extent+0x41d/0xd10 [ 66.653087][ T6818] ext4_map_blocks+0x4cb/0x1640 [ 66.658005][ T6818] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 66.663189][ T6818] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 66.668741][ T6818] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 66.674716][ T6818] ? prandom_u32_state+0xe/0x170 [ 66.679679][ T6818] ? __brelse+0x84/0xa0 [ 66.683945][ T6818] ? __ext4_new_inode+0x144/0x55e0 [ 66.689180][ T6818] ext4_getblk+0xad/0x520 [ 66.693494][ T6818] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 66.699192][ T6818] ? ext4_free_inode+0x1700/0x1700 [ 66.704285][ T6818] ext4_bread+0x7c/0x380 [ 66.708522][ T6818] ? ext4_getblk+0x520/0x520 [ 66.713096][ T6818] ? dquot_get_next_dqblk+0x180/0x180 [ 66.718457][ T6818] ? security_transition_sid+0x123/0x190 [ 66.724076][ T6818] ? security_transition_sid+0xed/0x190 [ 66.729620][ T6818] ext4_append+0x153/0x360 [ 66.734039][ T6818] ext4_mkdir+0x5e0/0xdf0 [ 66.738428][ T6818] ? ext4_rmdir+0xde0/0xde0 [ 66.742924][ T6818] vfs_mkdir+0x419/0x690 [ 66.747152][ T6818] do_mkdirat+0x21e/0x280 [ 66.751465][ T6818] ? __ia32_sys_mknod+0xb0/0xb0 [ 66.756447][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.762412][ T6818] ? do_syscall_64+0x21/0x7d0 [ 66.767067][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 66.773064][ T6818] do_syscall_64+0xf6/0x7d0 [ 66.777556][ T6818] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 66.783428][ T6818] RIP: 0033:0x45bee7 [ 66.787303][ T6818] Code: Bad RIP value. [ 66.791502][ T6818] RSP: 002b:00007fffe3b044d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 66.800195][ T6818] RAX: ffffffffffffffda RBX: 0000000000010400 RCX: 000000000045bee7 [ 66.808226][ T6818] RDX: 00007fffe3b04523 RSI: 00000000000001ff RDI: 00007fffe3b04520 [ 66.816199][ T6818] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 66.824153][ T6818] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 66.832121][ T6818] R13: 00007fffe3b04510 R14: 00000000000103f2 R15: 00007fffe3b04520 2020/06/13 17:08:09 building call list... [ 67.040341][ T7] tipc: TX() has been purged, node left! executing program [ 68.617025][ T6805] can: request_module (can-proto-0) failed. [ 69.097026][ T6805] can: request_module (can-proto-0) failed. [ 69.108588][ T6805] can: request_module (can-proto-0) failed. [ 69.153647][ T28] audit: type=1400 audit(1592068092.117:9): avc: denied { create } for pid=6800 comm="syz-fuzzer" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=dccp_socket permissive=1