[ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 37.513196][ T6937] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6937 [ 37.522805][ T6937] caller is ext4_mb_new_blocks+0x301/0x1620 [ 37.529440][ T6937] CPU: 1 PID: 6937 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 37.537702][ T6937] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 37.547735][ T6937] Call Trace: [ 37.551028][ T6937] dump_stack+0x1f0/0x31e [ 37.555334][ T6937] check_preemption_disabled+0x1c9/0x240 [ 37.560943][ T6937] ext4_mb_new_blocks+0x301/0x1620 [ 37.566047][ T6937] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 37.571323][ T6937] ? lock_acquire+0x169/0x480 [ 37.575970][ T6937] ? ext4_map_blocks+0x7ea/0x19e0 [ 37.580994][ T6937] ext4_map_blocks+0x8c1/0x19e0 [ 37.585826][ T6937] ext4_getblk+0xa4/0x460 [ 37.590219][ T6937] ext4_bread+0x48/0x330 [ 37.594437][ T6937] ext4_append+0x153/0x2d0 [ 37.598831][ T6937] ext4_mkdir+0x75f/0x14c0 [ 37.603247][ T6937] vfs_mkdir+0x42a/0x620 [ 37.607467][ T6937] do_mkdirat+0x1b9/0x310 [ 37.611772][ T6937] do_syscall_64+0xf3/0x1b0 [ 37.616257][ T6937] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 37.622152][ T6937] RIP: 0033:0x7f6c9788b687 [ 37.626554][ T6937] Code: Bad RIP value. [ 37.630607][ T6937] RSP: 002b:00007ffdf27fe1f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 37.639245][ T6937] RAX: ffffffffffffffda RBX: 0000560dbaaf7985 RCX: 00007f6c9788b687 [ 37.647191][ T6937] RDX: 00007ffdf27fe0c0 RSI: 00000000000001ed RDI: 0000560dbaaf7985 [ 37.655134][ T6937] RBP: 00007f6c9788b680 R08: 0000000000000100 R09: 0000000000000000 [ 37.663077][ T6937] R10: 0000560dbaaf7980 R11: 0000000000000246 R12: 00000000000001ed [ 37.671022][ T6937] R13: 00007ffdf27fe380 R14: 0000000000000000 R15: 0000000000000000 Warning: Permanently added '10.128.10.62' (ECDSA) to the list of known hosts. 2020/06/13 06:54:58 fuzzer started 2020/06/13 06:54:58 connecting to host at 10.128.0.26:37033 2020/06/13 06:54:58 checking machine... 2020/06/13 06:54:58 checking revisions... 2020/06/13 06:54:58 testing simple program... [ 42.685335][ T6960] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6960 [ 42.694441][ T6960] caller is ext4_mb_new_blocks+0x301/0x1620 [ 42.700752][ T6960] CPU: 0 PID: 6960 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 42.708630][ T6960] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.718691][ T6960] Call Trace: [ 42.721988][ T6960] dump_stack+0x1f0/0x31e [ 42.726330][ T6960] check_preemption_disabled+0x1c9/0x240 [ 42.731975][ T6960] ext4_mb_new_blocks+0x301/0x1620 [ 42.737108][ T6960] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 42.742416][ T6960] ? lock_acquire+0x169/0x480 [ 42.747097][ T6960] ? ext4_map_blocks+0x7ea/0x19e0 [ 42.752143][ T6960] ext4_map_blocks+0x8c1/0x19e0 [ 42.756996][ T6960] ext4_getblk+0xa4/0x460 [ 42.761387][ T6960] ext4_bread+0x48/0x330 [ 42.765698][ T6960] ext4_append+0x153/0x2d0 [ 42.770152][ T6960] ext4_mkdir+0x75f/0x14c0 [ 42.774798][ T6960] vfs_mkdir+0x42a/0x620 [ 42.779023][ T6960] do_mkdirat+0x1b9/0x310 [ 42.783352][ T6960] do_syscall_64+0xf3/0x1b0 [ 42.787842][ T6960] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 42.793709][ T6960] RIP: 0033:0x4b02a0 [ 42.797572][ T6960] Code: Bad RIP value. [ 42.801610][ T6960] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 42.810007][ T6960] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 42.817951][ T6960] RDX: 00000000000001c0 RSI: 000000c0000ece20 RDI: ffffffffffffff9c [ 42.825895][ T6960] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 42.833850][ T6960] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 42.841796][ T6960] R13: 0000000000000072 R14: 0000000000000071 R15: 0000000000000100 [ 42.859981][ T6964] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6964 [ 42.869542][ T6964] caller is ext4_mb_new_blocks+0x301/0x1620 [ 42.875608][ T6964] CPU: 0 PID: 6964 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 42.883839][ T6964] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 42.893872][ T6964] Call Trace: [ 42.897143][ T6964] dump_stack+0x1f0/0x31e [ 42.901461][ T6964] check_preemption_disabled+0x1c9/0x240 [ 42.907069][ T6964] ext4_mb_new_blocks+0x301/0x1620 [ 42.912177][ T6964] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 42.917445][ T6964] ? lock_acquire+0x169/0x480 [ 42.922093][ T6964] ? ext4_map_blocks+0x7ea/0x19e0 [ 42.927104][ T6964] ext4_map_blocks+0x8c1/0x19e0 [ 42.931939][ T6964] ext4_getblk+0xa4/0x460 [ 42.936246][ T6964] ext4_bread+0x48/0x330 [ 42.940464][ T6964] ext4_append+0x153/0x2d0 [ 42.944855][ T6964] ext4_mkdir+0x75f/0x14c0 [ 42.949254][ T6964] vfs_mkdir+0x42a/0x620 [ 42.953471][ T6964] do_mkdirat+0x1b9/0x310 [ 42.957774][ T6964] do_syscall_64+0xf3/0x1b0 [ 42.962250][ T6964] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 42.968114][ T6964] RIP: 0033:0x45bee7 [ 42.971980][ T6964] Code: Bad RIP value. [ 42.976017][ T6964] RSP: 002b:00007ffcaa1f5748 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 42.984407][ T6964] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 42.992356][ T6964] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffcaa1f5920 [ 43.000365][ T6964] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002e00 [ 43.008335][ T6964] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 43.016285][ T6964] R13: 00007ffcaa1f5920 R14: 8421084210842109 R15: 00007ffcaa1f592c [ 43.095092][ T6967] IPVS: ftp: loaded support on port[0] = 21 [ 43.128902][ T6967] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6967 [ 43.138449][ T6967] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.144571][ T6967] CPU: 1 PID: 6967 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 43.152903][ T6967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.162936][ T6967] Call Trace: [ 43.166205][ T6967] dump_stack+0x1f0/0x31e [ 43.170563][ T6967] check_preemption_disabled+0x1c9/0x240 [ 43.176175][ T6967] ext4_mb_new_blocks+0x301/0x1620 [ 43.181268][ T6967] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.186536][ T6967] ? lock_acquire+0x169/0x480 [ 43.191186][ T6967] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.196279][ T6967] ext4_map_blocks+0x8c1/0x19e0 [ 43.201167][ T6967] ext4_getblk+0xa4/0x460 [ 43.205498][ T6967] ext4_bread+0x48/0x330 [ 43.209729][ T6967] ext4_append+0x153/0x2d0 [ 43.214128][ T6967] ext4_mkdir+0x75f/0x14c0 [ 43.218528][ T6967] vfs_mkdir+0x42a/0x620 [ 43.222765][ T6967] do_mkdirat+0x1b9/0x310 [ 43.227071][ T6967] do_syscall_64+0xf3/0x1b0 [ 43.231565][ T6967] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 43.237432][ T6967] RIP: 0033:0x45bee7 [ 43.241294][ T6967] Code: Bad RIP value. [ 43.245335][ T6967] RSP: 002b:00007ffcaa1f5638 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 43.253716][ T6967] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 43.261665][ T6967] RDX: 00007ffcaa1f5683 RSI: 00000000000001ff RDI: 00007ffcaa1f5680 [ 43.269784][ T6967] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 43.277745][ T6967] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 43.285690][ T6967] R13: 00007ffcaa1f5670 R14: 0000000000000000 R15: 00007ffcaa1f5680 [ 43.335548][ T6967] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6967 [ 43.345038][ T6967] caller is ext4_mb_new_blocks+0x301/0x1620 [ 43.350950][ T6967] CPU: 1 PID: 6967 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 43.359286][ T6967] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 43.369328][ T6967] Call Trace: [ 43.372620][ T6967] dump_stack+0x1f0/0x31e [ 43.376926][ T6967] check_preemption_disabled+0x1c9/0x240 [ 43.382537][ T6967] ext4_mb_new_blocks+0x301/0x1620 [ 43.387629][ T6967] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 43.392917][ T6967] ? lock_acquire+0x169/0x480 [ 43.397565][ T6967] ? ext4_map_blocks+0x7ea/0x19e0 [ 43.402587][ T6967] ext4_map_blocks+0x8c1/0x19e0 [ 43.407420][ T6967] ext4_getblk+0xa4/0x460 [ 43.411742][ T6967] ext4_bread+0x48/0x330 [ 43.415965][ T6967] ext4_append+0x153/0x2d0 [ 43.420357][ T6967] ext4_mkdir+0x75f/0x14c0 [ 43.424777][ T6967] vfs_mkdir+0x42a/0x620 [ 43.428997][ T6967] do_mkdirat+0x1b9/0x310 [ 43.433305][ T6967] do_syscall_64+0xf3/0x1b0 [ 43.437780][ T6967] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 43.443645][ T6967] RIP: 0033:0x45bee7 [ 43.447535][ T6967] Code: Bad RIP value. [ 43.451587][ T6967] RSP: 002b:00007ffcaa1f5638 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 43.459995][ T6967] RAX: ffffffffffffffda RBX: 000000000000a93a RCX: 000000000045bee7 [ 43.467952][ T6967] RDX: 00007ffcaa1f5683 RSI: 00000000000001ff RDI: 00007ffcaa1f5680 [ 43.475907][ T6967] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 43.483873][ T6967] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 43.491833][ T6967] R13: 00007ffcaa1f5670 R14: 000000000000a936 R15: 00007ffcaa1f5680 2020/06/13 06:54:59 building call list... [ 43.742012][ T301] tipc: TX() has been purged, node left! [ 44.731833][ T6954] can: request_module (can-proto-0) failed. executing program [ 45.511966][ T6954] can: request_module (can-proto-0) failed. [ 45.523738][ T6954] can: request_module (can-proto-0) failed. [ 45.546711][ T1159] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1159 [ 45.556077][ T1159] caller is ext4_mb_new_blocks+0x301/0x1620 [ 45.562057][ T1159] CPU: 1 PID: 1159 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 45.569950][ T1159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.580016][ T1159] Call Trace: [ 45.583315][ T1159] dump_stack+0x1f0/0x31e [ 45.587658][ T1159] check_preemption_disabled+0x1c9/0x240 [ 45.593392][ T1159] ext4_mb_new_blocks+0x301/0x1620 [ 45.598532][ T1159] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 45.603854][ T1159] ? lock_acquire+0x169/0x480 [ 45.608541][ T1159] ? ext4_map_blocks+0x7ea/0x19e0 [ 45.613589][ T1159] ext4_map_blocks+0x8c1/0x19e0 [ 45.618470][ T1159] ext4_writepages+0x150c/0x3750 [ 45.623440][ T1159] ? __lock_acquire+0x116c/0x2c30 [ 45.628499][ T1159] ? ext4_readpage+0x140/0x140 [ 45.633281][ T1159] do_writepages+0xda/0x1f0 [ 45.637804][ T1159] __filemap_fdatawrite_range+0x2a5/0x350 [ 45.643559][ T1159] collapse_file+0x2edc/0x39d0 [ 45.648362][ T1159] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 45.654010][ T1159] ? __lock_acquire+0x116c/0x2c30 [ 45.659075][ T1159] ? lock_acquire+0x169/0x480 [ 45.663757][ T1159] ? khugepaged_do_scan+0x1ac/0x590 [ 45.668978][ T1159] khugepaged_do_scan+0x22f/0x590 [ 45.674018][ T1159] khugepaged+0xa5/0x7b0 [ 45.678270][ T1159] ? init_wait_entry+0xd0/0xd0 [ 45.683048][ T1159] kthread+0x37e/0x3a0 [ 45.687121][ T1159] ? start_stop_khugepaged+0x3b0/0x3b0 [ 45.692581][ T1159] ? kthread_blkcg+0xd0/0xd0 [ 45.697183][ T1159] ret_from_fork+0x24/0x30 [ 45.771093][ T1159] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1159 [ 45.780346][ T1159] caller is ext4_mb_new_blocks+0x301/0x1620 [ 45.786623][ T1159] CPU: 1 PID: 1159 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 45.794635][ T1159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.804695][ T1159] Call Trace: [ 45.807982][ T1159] dump_stack+0x1f0/0x31e [ 45.808015][ T1159] check_preemption_disabled+0x1c9/0x240 [ 45.818018][ T1159] ext4_mb_new_blocks+0x301/0x1620 [ 45.823275][ T1159] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 45.828573][ T1159] ? lock_acquire+0x169/0x480 [ 45.833242][ T1159] ? ext4_map_blocks+0x7ea/0x19e0 [ 45.838270][ T1159] ext4_map_blocks+0x8c1/0x19e0 [ 45.843110][ T1159] ext4_writepages+0x150c/0x3750 [ 45.848077][ T1159] ? ext4_readpage+0x140/0x140 [ 45.852822][ T1159] do_writepages+0xda/0x1f0 [ 45.857320][ T1159] __filemap_fdatawrite_range+0x2a5/0x350 [ 45.863037][ T1159] collapse_file+0x2edc/0x39d0 [ 45.867815][ T1159] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 45.873574][ T1159] ? __lock_acquire+0x116c/0x2c30 [ 45.878595][ T1159] ? lock_acquire+0x169/0x480 [ 45.883255][ T1159] ? khugepaged_do_scan+0x1ac/0x590 [ 45.888434][ T1159] khugepaged_do_scan+0x22f/0x590 [ 45.893458][ T1159] khugepaged+0xa5/0x7b0 [ 45.897674][ T1159] ? init_wait_entry+0xd0/0xd0 [ 45.902557][ T1159] kthread+0x37e/0x3a0 [ 45.906633][ T1159] ? start_stop_khugepaged+0x3b0/0x3b0 [ 45.912085][ T1159] ? kthread_blkcg+0xd0/0xd0 [ 45.916655][ T1159] ret_from_fork+0x24/0x30 [ 45.953386][ T1159] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1159 [ 45.962585][ T1159] caller is ext4_mb_new_blocks+0x301/0x1620 [ 45.968475][ T1159] CPU: 1 PID: 1159 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 45.976446][ T1159] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 45.986495][ T1159] Call Trace: [ 45.989802][ T1159] dump_stack+0x1f0/0x31e [ 45.994144][ T1159] check_preemption_disabled+0x1c9/0x240 [ 45.999793][ T1159] ext4_mb_new_blocks+0x301/0x1620 [ 46.004934][ T1159] ext4_ext_map_blocks+0x2ad5/0x6d20 [ 46.010240][ T1159] ? lock_acquire+0x169/0x480 [ 46.014927][ T1159] ? ext4_map_blocks+0x7ea/0x19e0 [ 46.019960][ T1159] ext4_map_blocks+0x8c1/0x19e0 [ 46.024812][ T1159] ext4_writepages+0x150c/0x3750 [ 46.029755][ T1159] ? ext4_readpage+0x140/0x140 [ 46.034518][ T1159] do_writepages+0xda/0x1f0 [ 46.039001][ T1159] __filemap_fdatawrite_range+0x2a5/0x350 [ 46.044703][ T1159] collapse_file+0x2edc/0x39d0 [ 46.049455][ T1159] khugepaged_scan_mm_slot+0x6353/0x69a0 [ 46.055082][ T1159] ? __lock_acquire+0x116c/0x2c30 [ 46.060112][ T1159] ? lock_acquire+0x169/0x480 [ 46.064763][ T1159] ? khugepaged_do_scan+0x1ac/0x590 [ 46.069941][ T1159] khugepaged_do_scan+0x22f/0x590 [ 46.074962][ T1159] khugepaged+0xa5/0x7b0 [ 46.079195][ T1159] ? init_wait_entry+0xd0/0xd0 [ 46.083944][ T1159] kthread+0x37e/0x3a0 [ 46.087990][ T1159] ? start_stop_khugepaged+0x3b0/0x3b0 [ 46.093425][ T1159] ? kthread_blkcg+0xd0/0xd0 [ 46.098093][ T1159] ret_from_fork+0x24/0x30