[ 54.233054][ T6727] RBP: 00007ff6c163f680 R08: 0000000000000100 R09: 0000000000000000 [ 54.233062][ T6727] R10: 000056166a66d980 R11: 0000000000000246 R12: 00000000000001ed [ 54.233070][ T6727] R13: 00007ffc699daa60 R14: 0000000000000000 R15: 0000000000000000 Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.1.58' (ECDSA) to the list of known hosts. 2020/06/13 02:21:58 fuzzer started 2020/06/13 02:21:58 connecting to host at 10.128.0.26:44647 2020/06/13 02:21:58 checking machine... 2020/06/13 02:21:58 checking revisions... 2020/06/13 02:21:58 testing simple program... syzkaller login: [ 60.226972][ T6796] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6796 [ 60.236362][ T6796] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.242578][ T6796] CPU: 1 PID: 6796 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.250555][ T6796] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.260870][ T6796] Call Trace: [ 60.264196][ T6796] dump_stack+0x18f/0x20d [ 60.268588][ T6796] debug_smp_processor_id.cold+0x88/0x9b [ 60.274232][ T6796] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.279499][ T6796] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.285310][ T6796] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.291210][ T6796] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.296597][ T6796] ? ext4_ext_release+0x10/0x10 [ 60.301640][ T6796] ? down_write_killable+0x170/0x170 [ 60.306939][ T6796] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.312848][ T6796] ext4_map_blocks+0x4cb/0x1640 [ 60.317794][ T6796] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.323118][ T6796] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.328658][ T6796] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.339308][ T6796] ? prandom_u32_state+0xe/0x170 [ 60.344236][ T6796] ? __brelse+0x84/0xa0 [ 60.348368][ T6796] ? __ext4_new_inode+0x144/0x55e0 [ 60.353478][ T6796] ext4_getblk+0xad/0x520 [ 60.357788][ T6796] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.363489][ T6796] ? ext4_free_inode+0x1700/0x1700 [ 60.368593][ T6796] ext4_bread+0x7c/0x380 [ 60.372820][ T6796] ? ext4_getblk+0x520/0x520 [ 60.377402][ T6796] ? dquot_get_next_dqblk+0x180/0x180 [ 60.382786][ T6796] ext4_append+0x153/0x360 [ 60.387552][ T6796] ext4_mkdir+0x5e0/0xdf0 [ 60.391981][ T6796] ? ext4_rmdir+0xde0/0xde0 [ 60.396486][ T6796] ? security_inode_permission+0xc4/0xf0 [ 60.402099][ T6796] vfs_mkdir+0x419/0x690 [ 60.406342][ T6796] do_mkdirat+0x21e/0x280 [ 60.410660][ T6796] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.417451][ T6796] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.423433][ T6796] ? do_syscall_64+0x21/0x7d0 [ 60.428104][ T6796] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.434079][ T6796] do_syscall_64+0xf6/0x7d0 [ 60.438588][ T6796] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.444548][ T6796] RIP: 0033:0x4b02a0 [ 60.448421][ T6796] Code: Bad RIP value. [ 60.452598][ T6796] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.461102][ T6796] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 60.469129][ T6796] RDX: 00000000000001c0 RSI: 000000c000026b60 RDI: ffffffffffffff9c [ 60.477089][ T6796] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 60.485053][ T6796] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.493296][ T6796] R13: 000000000000005c R14: 000000000000005b R15: 0000000000000100 [ 60.510004][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 60.520770][ T6814] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.527041][ T6814] CPU: 1 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.536441][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.547272][ T6814] Call Trace: [ 60.550571][ T6814] dump_stack+0x18f/0x20d [ 60.555027][ T6814] debug_smp_processor_id.cold+0x88/0x9b [ 60.568503][ T6814] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.573992][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.579711][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.586005][ T6814] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.591569][ T6814] ? ext4_ext_release+0x10/0x10 [ 60.599427][ T6814] ? down_write_killable+0x170/0x170 [ 60.607710][ T6814] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.614365][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 60.622105][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.634572][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.644412][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.656128][ T6814] ? prandom_u32_state+0xe/0x170 [ 60.661340][ T6814] ? __brelse+0x84/0xa0 [ 60.670355][ T6814] ? __ext4_new_inode+0x144/0x55e0 [ 60.686773][ T6814] ext4_getblk+0xad/0x520 [ 60.691568][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.700603][ T6814] ? ext4_free_inode+0x1700/0x1700 [ 60.706465][ T6814] ext4_bread+0x7c/0x380 [ 60.714920][ T6814] ? ext4_getblk+0x520/0x520 [ 60.720064][ T6814] ? dquot_get_next_dqblk+0x180/0x180 [ 60.729237][ T6814] ext4_append+0x153/0x360 [ 60.736241][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 60.740986][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 60.746027][ T6814] ? security_inode_permission+0xc4/0xf0 [ 60.752345][ T6814] vfs_mkdir+0x419/0x690 [ 60.756785][ T6814] do_mkdirat+0x21e/0x280 [ 60.763305][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.768173][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.774328][ T6814] ? do_syscall_64+0x21/0x7d0 [ 60.778997][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.785134][ T6814] do_syscall_64+0xf6/0x7d0 [ 60.789622][ T6814] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.795491][ T6814] RIP: 0033:0x45bee7 [ 60.799379][ T6814] Code: Bad RIP value. [ 60.803440][ T6814] RSP: 002b:00007ffd2817ea48 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.812268][ T6814] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 60.820223][ T6814] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd2817ec20 [ 60.828177][ T6814] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003a00 [ 60.836144][ T6814] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.844121][ T6814] R13: 00007ffd2817ec20 R14: 8421084210842109 R15: 00007ffd2817ec2c [ 60.925906][ T6815] IPVS: ftp: loaded support on port[0] = 21 [ 60.963532][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 60.973238][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.979198][ T6815] CPU: 0 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.987411][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.997440][ T6815] Call Trace: [ 61.000712][ T6815] dump_stack+0x18f/0x20d [ 61.005021][ T6815] debug_smp_processor_id.cold+0x88/0x9b [ 61.010627][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.015763][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.021197][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.026893][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.032248][ T6815] ? ext4_ext_release+0x10/0x10 [ 61.037086][ T6815] ? down_write_killable+0x170/0x170 [ 61.042347][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.047897][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 61.053398][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.062283][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.069902][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.077300][ T6815] ? prandom_u32_state+0xe/0x170 [ 61.082225][ T6815] ? __brelse+0x84/0xa0 [ 61.086467][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 61.091862][ T6815] ext4_getblk+0xad/0x520 [ 61.096476][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.103331][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 61.108462][ T6815] ext4_bread+0x7c/0x380 [ 61.113125][ T6815] ? ext4_getblk+0x520/0x520 [ 61.117704][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 61.123066][ T6815] ext4_append+0x153/0x360 [ 61.127476][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 61.131787][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 61.136270][ T6815] ? security_inode_permission+0xc4/0xf0 [ 61.141883][ T6815] vfs_mkdir+0x419/0x690 [ 61.146106][ T6815] do_mkdirat+0x21e/0x280 [ 61.150410][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.155237][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.161208][ T6815] ? do_syscall_64+0x21/0x7d0 [ 61.165871][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.171833][ T6815] do_syscall_64+0xf6/0x7d0 [ 61.176314][ T6815] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.182180][ T6815] RIP: 0033:0x45bee7 [ 61.186052][ T6815] Code: Bad RIP value. [ 61.190200][ T6815] RSP: 002b:00007ffd2817e938 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.198619][ T6815] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 61.206591][ T6815] RDX: 00007ffd2817e983 RSI: 00000000000001ff RDI: 00007ffd2817e980 [ 61.214538][ T6815] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.222495][ T6815] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 61.230454][ T6815] R13: 00007ffd2817e970 R14: 0000000000000000 R15: 00007ffd2817e980 [ 61.279482][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 61.289028][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.295150][ T6815] CPU: 0 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.303382][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.313431][ T6815] Call Trace: [ 61.316724][ T6815] dump_stack+0x18f/0x20d [ 61.321064][ T6815] debug_smp_processor_id.cold+0x88/0x9b [ 61.326699][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.331849][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.337319][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.343055][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.348357][ T6815] ? ext4_ext_release+0x10/0x10 [ 61.353258][ T6815] ? down_write_killable+0x170/0x170 [ 61.358551][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.364022][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 61.368870][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.374059][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.379615][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.385579][ T6815] ? prandom_u32_state+0xe/0x170 [ 61.390508][ T6815] ? __brelse+0x84/0xa0 [ 61.394650][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 61.400007][ T6815] ext4_getblk+0xad/0x520 [ 61.404316][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.410029][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 61.415116][ T6815] ext4_bread+0x7c/0x380 [ 61.419333][ T6815] ? ext4_getblk+0x520/0x520 [ 61.423896][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 61.429294][ T6815] ext4_append+0x153/0x360 [ 61.433703][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 61.438042][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 61.442535][ T6815] ? security_inode_permission+0xc4/0xf0 [ 61.448336][ T6815] vfs_mkdir+0x419/0x690 [ 61.452563][ T6815] do_mkdirat+0x21e/0x280 [ 61.456882][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.461719][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.467683][ T6815] ? do_syscall_64+0x21/0x7d0 [ 61.473216][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 2020/06/13 02:22:00 building call list... [ 61.479179][ T6815] do_syscall_64+0xf6/0x7d0 [ 61.483696][ T6815] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.489578][ T6815] RIP: 0033:0x45bee7 [ 61.493452][ T6815] Code: Bad RIP value. [ 61.497504][ T6815] RSP: 002b:00007ffd2817e938 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 61.505953][ T6815] RAX: ffffffffffffffda RBX: 000000000000ef50 RCX: 000000000045bee7 [ 61.514089][ T6815] RDX: 00007ffd2817e983 RSI: 00000000000001ff RDI: 00007ffd2817e980 [ 61.522782][ T6815] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.531372][ T6815] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 61.539714][ T6815] R13: 00007ffd2817e970 R14: 000000000000ef4b R15: 00007ffd2817e980 [ 61.810609][ T38] tipc: TX() has been purged, node left! executing program [ 63.201201][ T6805] can: request_module (can-proto-0) failed. [ 63.796841][ T6805] can: request_module (can-proto-0) failed. [ 63.808797][ T6805] can: request_module (can-proto-0) failed.