[ 52.380325][ T6761] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.385764][ T6761] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.391468][ T6761] ext4_ext_map_blocks+0x2044/0x3410 [ 52.396755][ T6761] ? ext4_ext_release+0x10/0x10 [ 52.401694][ T6761] ? __down_timeout+0x2d0/0x2d0 [ 52.406545][ T6761] ? ext4_es_lookup_extent+0x41d/0xd30 [ 52.411987][ T6761] ext4_map_blocks+0x4cb/0x1640 [ 52.416838][ T6761] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.422013][ T6761] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.427547][ T6761] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.433503][ T6761] ? prandom_u32_state+0xe/0x170 [ 52.438437][ T6761] ? __brelse+0x84/0xa0 [ 52.442585][ T6761] ? __ext4_new_inode+0x144/0x57c0 [ 52.447678][ T6761] ext4_getblk+0xad/0x520 [ 52.452003][ T6761] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.457703][ T6761] ? ext4_free_inode+0x17e0/0x17e0 [ 52.462815][ T6761] ext4_bread+0x7c/0x380 [ 52.467042][ T6761] ? ext4_getblk+0x520/0x520 [ 52.471609][ T6761] ? dqget+0xff0/0xff0 [ 52.475657][ T6761] ext4_append+0x153/0x360 [ 52.480055][ T6761] ext4_mkdir+0x5e0/0xdf0 [ 52.484381][ T6761] ? ext4_rmdir+0xde0/0xde0 [ 52.488868][ T6761] ? security_inode_permission+0xc4/0xf0 [ 52.494484][ T6761] vfs_mkdir+0x419/0x690 [ 52.498707][ T6761] do_mkdirat+0x21e/0x280 [ 52.503040][ T6761] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.507883][ T6761] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.513839][ T6761] ? do_syscall_64+0x21/0x7d0 [ 52.518494][ T6761] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.524453][ T6761] do_syscall_64+0xf6/0x7d0 [ 52.528936][ T6761] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.534820][ T6761] RIP: 0033:0x7fcf447dd687 [ 52.539212][ T6761] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 52.558824][ T6761] RSP: 002b:00007fff87c5e2a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.567218][ T6761] RAX: ffffffffffffffda RBX: 00005595757b9985 RCX: 00007fcf447dd687 [ 52.575181][ T6761] RDX: 00007fff87c5e170 RSI: 00000000000001ed RDI: 00005595757b9985 [ 52.583131][ T6761] RBP: 00007fcf447dd680 R08: 0000000000000100 R09: 0000000000000000 [ 52.591084][ T6761] R10: 00005595757b9980 R11: 0000000000000246 R12: 00000000000001ed [ 52.599054][ T6761] R13: 00007fff87c5e430 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.93' (ECDSA) to the list of known hosts. 2020/06/11 23:12:59 fuzzer started 2020/06/11 23:12:59 connecting to host at 10.128.0.26:40411 2020/06/11 23:12:59 checking machine... 2020/06/11 23:12:59 checking revisions... 2020/06/11 23:12:59 testing simple program... syzkaller login: [ 58.235729][ T6835] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6835 [ 58.244921][ T6835] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.250801][ T6835] CPU: 0 PID: 6835 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.258821][ T6835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.268967][ T6835] Call Trace: [ 58.272263][ T6835] dump_stack+0x188/0x20d [ 58.276584][ T6835] debug_smp_processor_id.cold+0x88/0x9b [ 58.282213][ T6835] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.287312][ T6835] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.292750][ T6835] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.298468][ T6835] ext4_ext_map_blocks+0x2044/0x3410 [ 58.303735][ T6835] ? ext4_ext_release+0x10/0x10 [ 58.308575][ T6835] ? __down_timeout+0x2d0/0x2d0 [ 58.313403][ T6835] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.318862][ T6835] ext4_map_blocks+0x4cb/0x1640 [ 58.323696][ T6835] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.328875][ T6835] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.334423][ T6835] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.340410][ T6835] ? prandom_u32_state+0xe/0x170 [ 58.345327][ T6835] ? __brelse+0x84/0xa0 [ 58.349460][ T6835] ? __ext4_new_inode+0x144/0x57c0 [ 58.354567][ T6835] ext4_getblk+0xad/0x520 [ 58.358879][ T6835] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.364579][ T6835] ? ext4_free_inode+0x17e0/0x17e0 [ 58.369667][ T6835] ext4_bread+0x7c/0x380 [ 58.373908][ T6835] ? ext4_getblk+0x520/0x520 [ 58.378489][ T6835] ? dqget+0xff0/0xff0 [ 58.382539][ T6835] ext4_append+0x153/0x360 [ 58.386934][ T6835] ext4_mkdir+0x5e0/0xdf0 [ 58.391241][ T6835] ? ext4_rmdir+0xde0/0xde0 [ 58.395725][ T6835] ? security_inode_permission+0xc4/0xf0 [ 58.401362][ T6835] vfs_mkdir+0x419/0x690 [ 58.405585][ T6835] do_mkdirat+0x21e/0x280 [ 58.409909][ T6835] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.414737][ T6835] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.420695][ T6835] ? do_syscall_64+0x21/0x7d0 [ 58.425350][ T6835] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.431329][ T6835] do_syscall_64+0xf6/0x7d0 [ 58.435820][ T6835] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.441687][ T6835] RIP: 0033:0x4b02a0 [ 58.445567][ T6835] Code: 8b 7c 24 10 48 8b 74 24 18 48 8b 54 24 20 49 c7 c2 00 00 00 00 49 c7 c0 00 00 00 00 49 c7 c1 00 00 00 00 48 8b 44 24 08 0f 05 <48> 3d 01 f0 ff ff 76 20 48 c7 44 24 28 ff ff ff ff 48 c7 44 24 30 [ 58.465174][ T6835] RSP: 002b:000000c0000cb4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.474950][ T6835] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.482914][ T6835] RDX: 00000000000001c0 RSI: 000000c0000e4c60 RDI: ffffffffffffff9c [ 58.491037][ T6835] RBP: 000000c0000cb510 R08: 0000000000000000 R09: 0000000000000000 [ 58.498985][ T6835] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.506949][ T6835] R13: 0000000000000064 R14: 0000000000000063 R15: 0000000000000100 [ 58.524480][ T6846] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6846 [ 58.533987][ T6846] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.539895][ T6846] CPU: 0 PID: 6846 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.548121][ T6846] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.558170][ T6846] Call Trace: [ 58.561443][ T6846] dump_stack+0x188/0x20d [ 58.565755][ T6846] debug_smp_processor_id.cold+0x88/0x9b [ 58.571362][ T6846] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.576461][ T6846] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.581897][ T6846] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.587629][ T6846] ext4_ext_map_blocks+0x2044/0x3410 [ 58.592897][ T6846] ? ext4_ext_release+0x10/0x10 [ 58.597737][ T6846] ? __down_timeout+0x2d0/0x2d0 [ 58.602567][ T6846] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.608014][ T6846] ext4_map_blocks+0x4cb/0x1640 [ 58.612847][ T6846] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.618024][ T6846] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.623547][ T6846] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.629524][ T6846] ? prandom_u32_state+0xe/0x170 [ 58.634441][ T6846] ? __brelse+0x84/0xa0 [ 58.638574][ T6846] ? __ext4_new_inode+0x144/0x57c0 [ 58.643681][ T6846] ext4_getblk+0xad/0x520 [ 58.647992][ T6846] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.653693][ T6846] ? ext4_free_inode+0x17e0/0x17e0 [ 58.658791][ T6846] ext4_bread+0x7c/0x380 [ 58.663011][ T6846] ? ext4_getblk+0x520/0x520 [ 58.667581][ T6846] ? dqget+0xff0/0xff0 [ 58.671635][ T6846] ext4_append+0x153/0x360 [ 58.676052][ T6846] ext4_mkdir+0x5e0/0xdf0 [ 58.680377][ T6846] ? ext4_rmdir+0xde0/0xde0 [ 58.684882][ T6846] ? security_inode_permission+0xc4/0xf0 [ 58.690496][ T6846] vfs_mkdir+0x419/0x690 [ 58.694724][ T6846] do_mkdirat+0x21e/0x280 [ 58.699032][ T6846] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.703881][ T6846] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.709861][ T6846] ? do_syscall_64+0x21/0x7d0 [ 58.714520][ T6846] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.720496][ T6846] do_syscall_64+0xf6/0x7d0 [ 58.724982][ T6846] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.730865][ T6846] RIP: 0033:0x45bee7 [ 58.734816][ T6846] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 58.754707][ T6846] RSP: 002b:00007ffec4ad6cb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.763125][ T6846] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.771088][ T6846] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffec4ad6e90 [ 58.779488][ T6846] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003500 [ 58.787442][ T6846] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.795392][ T6846] R13: 00007ffec4ad6e90 R14: 8421084210842109 R15: 00007ffec4ad6e9c [ 58.877672][ T6847] IPVS: ftp: loaded support on port[0] = 21 [ 58.916677][ T6847] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6847 [ 58.926203][ T6847] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.932083][ T6847] CPU: 1 PID: 6847 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.940302][ T6847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.950336][ T6847] Call Trace: [ 58.953610][ T6847] dump_stack+0x188/0x20d [ 58.957945][ T6847] debug_smp_processor_id.cold+0x88/0x9b [ 58.963571][ T6847] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.968670][ T6847] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.974130][ T6847] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.980951][ T6847] ext4_ext_map_blocks+0x2044/0x3410 [ 58.986233][ T6847] ? ext4_ext_release+0x10/0x10 [ 58.991088][ T6847] ? __down_timeout+0x2d0/0x2d0 [ 58.995933][ T6847] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.001372][ T6847] ext4_map_blocks+0x4cb/0x1640 [ 59.006208][ T6847] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.011382][ T6847] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.016925][ T6847] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.022902][ T6847] ? prandom_u32_state+0xe/0x170 [ 59.027820][ T6847] ? __brelse+0x84/0xa0 [ 59.031954][ T6847] ? __ext4_new_inode+0x144/0x57c0 [ 59.037045][ T6847] ext4_getblk+0xad/0x520 [ 59.041355][ T6847] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.047075][ T6847] ? ext4_free_inode+0x17e0/0x17e0 [ 59.052178][ T6847] ext4_bread+0x7c/0x380 [ 59.056462][ T6847] ? ext4_getblk+0x520/0x520 [ 59.061049][ T6847] ? dqget+0xff0/0xff0 [ 59.065115][ T6847] ext4_append+0x153/0x360 [ 59.069532][ T6847] ext4_mkdir+0x5e0/0xdf0 [ 59.074459][ T6847] ? ext4_rmdir+0xde0/0xde0 [ 59.078966][ T6847] ? security_inode_permission+0xc4/0xf0 [ 59.084595][ T6847] vfs_mkdir+0x419/0x690 [ 59.088849][ T6847] do_mkdirat+0x21e/0x280 [ 59.093162][ T6847] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.098013][ T6847] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.103974][ T6847] ? do_syscall_64+0x21/0x7d0 [ 59.108645][ T6847] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.114632][ T6847] do_syscall_64+0xf6/0x7d0 [ 59.119118][ T6847] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.125285][ T6847] RIP: 0033:0x45bee7 [ 59.129172][ T6847] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.148825][ T6847] RSP: 002b:00007ffec4ad6ba8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.157272][ T6847] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.165431][ T6847] RDX: 00007ffec4ad6bf3 RSI: 00000000000001ff RDI: 00007ffec4ad6bf0 [ 59.173474][ T6847] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.181483][ T6847] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 59.189450][ T6847] R13: 00007ffec4ad6be0 R14: 0000000000000000 R15: 00007ffec4ad6bf0 [ 59.241406][ T6847] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6847 [ 59.250951][ T6847] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.257093][ T6847] CPU: 1 PID: 6847 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.265334][ T6847] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.275389][ T6847] Call Trace: [ 59.278689][ T6847] dump_stack+0x188/0x20d [ 59.283045][ T6847] debug_smp_processor_id.cold+0x88/0x9b [ 59.288685][ T6847] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.293854][ T6847] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.299326][ T6847] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.305061][ T6847] ext4_ext_map_blocks+0x2044/0x3410 [ 59.310351][ T6847] ? ext4_ext_release+0x10/0x10 [ 59.315224][ T6847] ? __down_timeout+0x2d0/0x2d0 [ 59.320070][ T6847] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.325512][ T6847] ext4_map_blocks+0x4cb/0x1640 [ 59.330364][ T6847] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.335543][ T6847] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.341088][ T6847] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.347059][ T6847] ? prandom_u32_state+0xe/0x170 [ 59.351976][ T6847] ? __brelse+0x84/0xa0 [ 59.357065][ T6847] ? __ext4_new_inode+0x144/0x57c0 [ 59.362159][ T6847] ext4_getblk+0xad/0x520 [ 59.366470][ T6847] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.372170][ T6847] ? ext4_free_inode+0x17e0/0x17e0 [ 59.377278][ T6847] ext4_bread+0x7c/0x380 [ 59.381531][ T6847] ? ext4_getblk+0x520/0x520 [ 59.386109][ T6847] ? dqget+0xff0/0xff0 [ 59.390178][ T6847] ext4_append+0x153/0x360 [ 59.394593][ T6847] ext4_mkdir+0x5e0/0xdf0 [ 59.398904][ T6847] ? ext4_rmdir+0xde0/0xde0 [ 59.403386][ T6847] ? security_inode_permission+0xc4/0xf0 [ 59.409027][ T6847] vfs_mkdir+0x419/0x690 [ 59.413250][ T6847] do_mkdirat+0x21e/0x280 [ 59.417588][ T6847] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.422435][ T6847] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.428421][ T6847] ? do_syscall_64+0x21/0x7d0 [ 59.433091][ T6847] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.439053][ T6847] do_syscall_64+0xf6/0x7d0 [ 59.443552][ T6847] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.449437][ T6847] RIP: 0033:0x45bee7 [ 59.453338][ T6847] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 59.472937][ T6847] RSP: 002b:00007ffec4ad6ba8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.481437][ T6847] RAX: ffffffffffffffda RBX: 000000000000e75f RCX: 000000000045bee7 2020/06/11 23:13:00 building call list... [ 59.489495][ T6847] RDX: 00007ffec4ad6bf3 RSI: 00000000000001ff RDI: 00007ffec4ad6bf0 [ 59.497450][ T6847] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.505417][ T6847] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 59.513372][ T6847] R13: 00007ffec4ad6be0 R14: 000000000000e74c R15: 00007ffec4ad6bf0 [ 59.783577][ T3554] tipc: TX() has been purged, node left! executing program [ 61.176043][ T6835] can: request_module (can-proto-0) failed. [ 61.788230][ T6835] can: request_module (can-proto-0) failed. [ 61.799887][ T6835] can: request_module (can-proto-0) failed.