[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. [ 50.395892][ T4810] systemd-udevd (4810) used greatest stack depth: 22496 bytes left [ 50.412035][ T4865] systemd-udevd (4865) used greatest stack depth: 22240 bytes left [ 51.416100][ T6723] scp (6723) used greatest stack depth: 21696 bytes left Starting Load/Save RF Kill Switch Status... [ 52.199503][ T6731] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6731 [ 52.208990][ T6731] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.215871][ T6731] CPU: 0 PID: 6731 Comm: systemd-rfkill Not tainted 5.7.0-next-20200602-syzkaller #0 [ 52.225326][ T6731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.235379][ T6731] Call Trace: [ 52.238657][ T6731] dump_stack+0x18f/0x20d [ 52.242979][ T6731] check_preemption_disabled+0x20d/0x220 [ 52.248603][ T6731] ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.253801][ T6731] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.259359][ T6731] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.265113][ T6731] ext4_ext_map_blocks+0x201b/0x33e0 [ 52.270384][ T6731] ? ext4_ext_release+0x10/0x10 [ 52.275225][ T6731] ? down_write_killable+0x170/0x170 [ 52.280501][ T6731] ? ext4_es_lookup_extent+0x41d/0xd10 [ 52.285947][ T6731] ext4_map_blocks+0x4cb/0x1640 [ 52.290797][ T6731] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.295980][ T6731] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.301507][ T6731] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.307473][ T6731] ? prandom_u32_state+0xe/0x170 [ 52.312399][ T6731] ? __brelse+0x84/0xa0 [ 52.316548][ T6731] ? __ext4_new_inode+0x144/0x55e0 [ 52.321653][ T6731] ext4_getblk+0xad/0x520 [ 52.325974][ T6731] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.331682][ T6731] ? ext4_free_inode+0x1700/0x1700 [ 52.336772][ T6731] ext4_bread+0x7c/0x380 [ 52.341001][ T6731] ? ext4_getblk+0x520/0x520 [ 52.345564][ T6731] ? dquot_get_next_dqblk+0x180/0x180 [ 52.350914][ T6731] ext4_append+0x153/0x360 [ 52.355316][ T6731] ext4_mkdir+0x5e0/0xdf0 [ 52.359637][ T6731] ? ext4_rmdir+0xde0/0xde0 [ 52.364128][ T6731] ? security_inode_permission+0xc4/0xf0 [ 52.369746][ T6731] vfs_mkdir+0x419/0x690 [ 52.373965][ T6731] do_mkdirat+0x21e/0x280 [ 52.378273][ T6731] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.383105][ T6731] ? do_syscall_64+0x1c/0xe0 [ 52.387671][ T6731] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.393641][ T6731] do_syscall_64+0x60/0xe0 [ 52.398037][ T6731] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.403902][ T6731] RIP: 0033:0x7fe0d32c9687 [ 52.408382][ T6731] Code: Bad RIP value. [ 52.412420][ T6731] RSP: 002b:00007fffd5e80488 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.420819][ T6731] RAX: ffffffffffffffda RBX: 000055fab378a985 RCX: 00007fe0d32c9687 [ 52.428773][ T6731] RDX: 00007fffd5e80350 RSI: 00000000000001ed RDI: 000055fab378a985 [ 52.436729][ T6731] RBP: 00007fe0d32c9680 R08: 0000000000000100 R09: 0000000000000000 [ 52.444685][ T6731] R10: 000055fab378a980 R11: 0000000000000246 R12: 00000000000001ed [ 52.452629][ T6731] R13: 00007fffd5e80610 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 Warning: Permanently added '10.128.0.156' (ECDSA) to the list of known hosts. 2020/06/02 11:54:55 fuzzer started 2020/06/02 11:54:55 connecting to host at 10.128.0.26:38891 2020/06/02 11:54:55 checking machine... 2020/06/02 11:54:55 checking revisions... 2020/06/02 11:54:55 testing simple program... syzkaller login: [ 58.013796][ T6794] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6794 [ 58.022904][ T6794] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.028951][ T6794] CPU: 0 PID: 6794 Comm: syz-fuzzer Not tainted 5.7.0-next-20200602-syzkaller #0 [ 58.038110][ T6794] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.048138][ T6794] Call Trace: [ 58.051408][ T6794] dump_stack+0x18f/0x20d [ 58.055718][ T6794] check_preemption_disabled+0x20d/0x220 [ 58.061436][ T6794] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.066550][ T6794] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.071985][ T6794] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.077693][ T6794] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.082960][ T6794] ? ext4_ext_release+0x10/0x10 [ 58.087801][ T6794] ? down_write_killable+0x170/0x170 [ 58.093063][ T6794] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.098506][ T6794] ext4_map_blocks+0x4cb/0x1640 [ 58.103382][ T6794] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.108575][ T6794] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.114111][ T6794] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.120078][ T6794] ? prandom_u32_state+0xe/0x170 [ 58.124992][ T6794] ? __brelse+0x84/0xa0 [ 58.129121][ T6794] ? __ext4_new_inode+0x144/0x55e0 [ 58.134207][ T6794] ext4_getblk+0xad/0x520 [ 58.138512][ T6794] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.144210][ T6794] ? ext4_free_inode+0x1700/0x1700 [ 58.149305][ T6794] ext4_bread+0x7c/0x380 [ 58.153549][ T6794] ? ext4_getblk+0x520/0x520 [ 58.158113][ T6794] ? dquot_get_next_dqblk+0x180/0x180 [ 58.163476][ T6794] ext4_append+0x153/0x360 [ 58.167884][ T6794] ext4_mkdir+0x5e0/0xdf0 [ 58.172193][ T6794] ? ext4_rmdir+0xde0/0xde0 [ 58.176687][ T6794] ? security_inode_permission+0xc4/0xf0 [ 58.182314][ T6794] vfs_mkdir+0x419/0x690 [ 58.186543][ T6794] do_mkdirat+0x21e/0x280 [ 58.190851][ T6794] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.195691][ T6794] ? do_syscall_64+0x1c/0xe0 [ 58.200349][ T6794] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.206325][ T6794] do_syscall_64+0x60/0xe0 [ 58.210998][ T6794] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.216872][ T6794] RIP: 0033:0x4b02a0 [ 58.220751][ T6794] Code: Bad RIP value. [ 58.224843][ T6794] RSP: 002b:000000c0000d14b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.233229][ T6794] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 58.241186][ T6794] RDX: 00000000000001c0 RSI: 000000c0000d6ae0 RDI: ffffffffffffff9c [ 58.249134][ T6794] RBP: 000000c0000d1510 R08: 0000000000000000 R09: 0000000000000000 [ 58.257081][ T6794] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.265028][ T6794] R13: 0000000000000058 R14: 0000000000000057 R15: 0000000000000100 [ 58.289683][ T6807] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6807 [ 58.299165][ T6807] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.305323][ T6807] CPU: 1 PID: 6807 Comm: syz-executor.0 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 58.314770][ T6807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.324800][ T6807] Call Trace: [ 58.328070][ T6807] dump_stack+0x18f/0x20d [ 58.332377][ T6807] check_preemption_disabled+0x20d/0x220 [ 58.339065][ T6807] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.344169][ T6807] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.349602][ T6807] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.355319][ T6807] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.360610][ T6807] ? ext4_ext_release+0x10/0x10 [ 58.365460][ T6807] ? down_write_killable+0x170/0x170 [ 58.370740][ T6807] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.376184][ T6807] ext4_map_blocks+0x4cb/0x1640 [ 58.381018][ T6807] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.386198][ T6807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.391728][ T6807] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.397710][ T6807] ? prandom_u32_state+0xe/0x170 [ 58.402952][ T6807] ? __brelse+0x84/0xa0 [ 58.407114][ T6807] ? __ext4_new_inode+0x144/0x55e0 [ 58.412236][ T6807] ext4_getblk+0xad/0x520 [ 58.416618][ T6807] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.422351][ T6807] ? ext4_free_inode+0x1700/0x1700 [ 58.427510][ T6807] ext4_bread+0x7c/0x380 [ 58.431755][ T6807] ? ext4_getblk+0x520/0x520 [ 58.436351][ T6807] ? dquot_get_next_dqblk+0x180/0x180 [ 58.441720][ T6807] ext4_append+0x153/0x360 [ 58.446135][ T6807] ext4_mkdir+0x5e0/0xdf0 [ 58.450447][ T6807] ? ext4_rmdir+0xde0/0xde0 [ 58.454931][ T6807] ? security_inode_permission+0xc4/0xf0 [ 58.460545][ T6807] vfs_mkdir+0x419/0x690 [ 58.464766][ T6807] do_mkdirat+0x21e/0x280 [ 58.469086][ T6807] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.473929][ T6807] ? do_syscall_64+0x1c/0xe0 [ 58.478497][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.484454][ T6807] do_syscall_64+0x60/0xe0 [ 58.488845][ T6807] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.494722][ T6807] RIP: 0033:0x45bee7 [ 58.498594][ T6807] Code: Bad RIP value. [ 58.502644][ T6807] RSP: 002b:00007ffccdc16268 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.511038][ T6807] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.518985][ T6807] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffccdc16440 [ 58.526939][ T6807] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002980 [ 58.534885][ T6807] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.542831][ T6807] R13: 00007ffccdc16440 R14: 8421084210842109 R15: 00007ffccdc1644c [ 58.623528][ T6808] IPVS: ftp: loaded support on port[0] = 21 [ 58.658825][ T6808] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6808 [ 58.668332][ T6808] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.674335][ T6808] CPU: 0 PID: 6808 Comm: syz-executor.0 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 58.683782][ T6808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.693821][ T6808] Call Trace: [ 58.697091][ T6808] dump_stack+0x18f/0x20d [ 58.701398][ T6808] check_preemption_disabled+0x20d/0x220 [ 58.707096][ T6808] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.712185][ T6808] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.717632][ T6808] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.723342][ T6808] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.728605][ T6808] ? ext4_ext_release+0x10/0x10 [ 58.733444][ T6808] ? down_write_killable+0x170/0x170 [ 58.738701][ T6808] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.744162][ T6808] ext4_map_blocks+0x4cb/0x1640 [ 58.749001][ T6808] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.754175][ T6808] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.759694][ T6808] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.765648][ T6808] ? prandom_u32_state+0xe/0x170 [ 58.770574][ T6808] ? __brelse+0x84/0xa0 [ 58.774719][ T6808] ? __ext4_new_inode+0x144/0x55e0 [ 58.779818][ T6808] ext4_getblk+0xad/0x520 [ 58.784398][ T6808] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.790095][ T6808] ? ext4_free_inode+0x1700/0x1700 [ 58.795196][ T6808] ext4_bread+0x7c/0x380 [ 58.799414][ T6808] ? ext4_getblk+0x520/0x520 [ 58.803978][ T6808] ? dquot_get_next_dqblk+0x180/0x180 [ 58.809342][ T6808] ext4_append+0x153/0x360 [ 58.813752][ T6808] ext4_mkdir+0x5e0/0xdf0 [ 58.818075][ T6808] ? ext4_rmdir+0xde0/0xde0 [ 58.822570][ T6808] ? security_inode_permission+0xc4/0xf0 [ 58.828179][ T6808] vfs_mkdir+0x419/0x690 [ 58.832397][ T6808] do_mkdirat+0x21e/0x280 [ 58.836715][ T6808] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.841540][ T6808] ? do_syscall_64+0x1c/0xe0 [ 58.846104][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.852062][ T6808] do_syscall_64+0x60/0xe0 [ 58.856456][ T6808] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.862320][ T6808] RIP: 0033:0x45bee7 [ 58.866182][ T6808] Code: Bad RIP value. [ 58.870231][ T6808] RSP: 002b:00007ffccdc16158 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 58.878625][ T6808] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 58.886584][ T6808] RDX: 00007ffccdc161a3 RSI: 00000000000001ff RDI: 00007ffccdc161a0 [ 58.894553][ T6808] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 58.902508][ T6808] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 58.910507][ T6808] R13: 00007ffccdc16190 R14: 0000000000000000 R15: 00007ffccdc161a0 [ 58.973246][ T6808] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6808 [ 58.982656][ T6808] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.988786][ T6808] CPU: 0 PID: 6808 Comm: syz-executor.0 Not tainted 5.7.0-next-20200602-syzkaller #0 [ 58.998234][ T6808] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.008284][ T6808] Call Trace: [ 59.011579][ T6808] dump_stack+0x18f/0x20d [ 59.015928][ T6808] check_preemption_disabled+0x20d/0x220 [ 59.021595][ T6808] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.026722][ T6808] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.032157][ T6808] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.037857][ T6808] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.043139][ T6808] ? ext4_ext_release+0x10/0x10 [ 59.047977][ T6808] ? down_write_killable+0x170/0x170 [ 59.053243][ T6808] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.058697][ T6808] ext4_map_blocks+0x4cb/0x1640 [ 59.063528][ T6808] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.068709][ T6808] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.074268][ T6808] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.080234][ T6808] ? prandom_u32_state+0xe/0x170 [ 59.085159][ T6808] ? __brelse+0x84/0xa0 [ 59.089297][ T6808] ? __ext4_new_inode+0x144/0x55e0 [ 59.094413][ T6808] ext4_getblk+0xad/0x520 [ 59.098772][ T6808] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.104478][ T6808] ? ext4_free_inode+0x1700/0x1700 [ 59.109616][ T6808] ext4_bread+0x7c/0x380 [ 59.113837][ T6808] ? ext4_getblk+0x520/0x520 [ 59.118402][ T6808] ? dquot_get_next_dqblk+0x180/0x180 [ 59.123796][ T6808] ext4_append+0x153/0x360 [ 59.128202][ T6808] ext4_mkdir+0x5e0/0xdf0 [ 59.132516][ T6808] ? ext4_rmdir+0xde0/0xde0 [ 59.137017][ T6808] ? security_inode_permission+0xc4/0xf0 [ 59.142625][ T6808] vfs_mkdir+0x419/0x690 [ 59.146862][ T6808] do_mkdirat+0x21e/0x280 [ 59.151166][ T6808] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.155992][ T6808] ? do_syscall_64+0x1c/0xe0 [ 59.160560][ T6808] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.166519][ T6808] do_syscall_64+0x60/0xe0 [ 59.170922][ T6808] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.176803][ T6808] RIP: 0033:0x45bee7 [ 59.180669][ T6808] Code: Bad RIP value. [ 59.184715][ T6808] RSP: 002b:00007ffccdc16158 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.193125][ T6808] RAX: ffffffffffffffda RBX: 000000000000e64b RCX: 000000000045bee7 [ 59.201073][ T6808] RDX: 00007ffccdc161a3 RSI: 00000000000001ff RDI: 00007ffccdc161a0 [ 59.209024][ T6808] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/02 11:54:57 building call list... [ 59.216973][ T6808] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 59.224952][ T6808] R13: 00007ffccdc16190 R14: 000000000000e639 R15: 00007ffccdc161a0 [ 59.533255][ T285] tipc: TX() has been purged, node left! executing program [ 60.950067][ T6789] can: request_module (can-proto-0) failed. [ 61.558267][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 61.562303][ T6789] can: request_module (can-proto-0) failed. [ 61.567486][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.579353][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-next-20200602-syzkaller #0 [ 61.580948][ T6789] can: request_module (can-proto-0) failed. [ 61.588442][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.588448][ T1157] Call Trace: [ 61.588467][ T1157] dump_stack+0x18f/0x20d [ 61.588489][ T1157] check_preemption_disabled+0x20d/0x220 [ 61.588505][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.588519][ T1157] ? ext4_find_extent+0x81a/0xad0 [ 61.588538][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.633205][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.638938][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.644241][ T1157] ? ext4_ext_release+0x10/0x10 [ 61.649115][ T1157] ? down_write_killable+0x170/0x170 [ 61.654412][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.659883][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 61.664744][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.669950][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.675493][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.681472][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.686936][ T1157] ext4_writepages+0x1ab5/0x3400 [ 61.691877][ T1157] ? mark_lock+0x20/0xdd0 [ 61.696220][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.701881][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.707514][ T1157] ? do_writepages+0xfa/0x2a0 [ 61.712193][ T1157] do_writepages+0xfa/0x2a0 [ 61.716705][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 61.722344][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 61.727379][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 61.732587][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 61.737442][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.743174][ T1157] ? collapse_file+0x35a2/0x4330 [ 61.748120][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.754550][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.759752][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.765737][ T1157] collapse_file+0x35ac/0x4330 [ 61.770521][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 61.775901][ T1157] ? khugepaged+0x2506/0x3fc0 [ 61.780590][ T1157] ? xas_find+0x31a/0x880 [ 61.784920][ T1157] ? check_preemption_disabled+0x38/0x220 [ 61.790733][ T1157] khugepaged+0x3041/0x3fc0 [ 61.795265][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.800899][ T1157] ? lock_downgrade+0x840/0x840 [ 61.805758][ T1157] ? finish_wait+0x260/0x260 [ 61.810355][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.816175][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.822164][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 61.827193][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.832826][ T1157] kthread+0x3b5/0x4a0 [ 61.837155][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.842872][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.848604][ T1157] ret_from_fork+0x1f/0x30 [ 61.932756][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 61.941857][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.948315][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-next-20200602-syzkaller #0 [ 61.957511][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.967548][ T1157] Call Trace: [ 61.970862][ T1157] dump_stack+0x18f/0x20d [ 61.975175][ T1157] check_preemption_disabled+0x20d/0x220 [ 61.980787][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.985882][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.991317][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.997455][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.002720][ T1157] ? ext4_ext_release+0x10/0x10 [ 62.007557][ T1157] ? down_write_killable+0x170/0x170 [ 62.012865][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.018301][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 62.023137][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.028413][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.033934][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.039905][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.045344][ T1157] ext4_writepages+0x1ab5/0x3400 [ 62.050274][ T1157] ? mark_lock+0x20/0xdd0 [ 62.054599][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.060219][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.065826][ T1157] ? do_writepages+0xfa/0x2a0 [ 62.070478][ T1157] do_writepages+0xfa/0x2a0 [ 62.074959][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 62.080565][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 62.085574][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 62.090745][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 62.095603][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.101300][ T1157] ? collapse_file+0x35a2/0x4330 [ 62.106217][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.112283][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.117467][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.123432][ T1157] collapse_file+0x35ac/0x4330 [ 62.128191][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 62.133608][ T1157] ? khugepaged+0x2506/0x3fc0 [ 62.138273][ T1157] ? xas_find+0x31a/0x880 [ 62.142595][ T1157] ? check_preemption_disabled+0x38/0x220 [ 62.148294][ T1157] khugepaged+0x3041/0x3fc0 [ 62.152797][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.158407][ T1157] ? lock_downgrade+0x840/0x840 [ 62.163245][ T1157] ? finish_wait+0x260/0x260 [ 62.167826][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.173691][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.179657][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 62.184661][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.190273][ T1157] kthread+0x3b5/0x4a0 [ 62.194318][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.200024][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.205773][ T1157] ret_from_fork+0x1f/0x30 [ 62.252646][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 62.261781][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.267747][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-next-20200602-syzkaller #0 [ 62.276840][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.286884][ T1157] Call Trace: [ 62.290167][ T1157] dump_stack+0x18f/0x20d [ 62.294738][ T1157] check_preemption_disabled+0x20d/0x220 [ 62.300427][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.305575][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.311025][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.317159][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.322454][ T1157] ? ext4_ext_release+0x10/0x10 [ 62.327293][ T1157] ? down_write_killable+0x170/0x170 [ 62.332563][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.338002][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 62.342831][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.348019][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.353554][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.359521][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.364958][ T1157] ext4_writepages+0x1ab5/0x3400 [ 62.369886][ T1157] ? mark_lock+0x20/0xdd0 [ 62.374318][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.379939][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.385557][ T1157] ? do_writepages+0xfa/0x2a0 [ 62.390207][ T1157] do_writepages+0xfa/0x2a0 [ 62.394701][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 62.400317][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 62.405316][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 62.410492][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 62.415322][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.421016][ T1157] ? collapse_file+0x35a2/0x4330 [ 62.425929][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.431976][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.437149][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.443115][ T1157] collapse_file+0x35ac/0x4330 [ 62.447872][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 62.453223][ T1157] ? khugepaged+0x2506/0x3fc0 [ 62.457878][ T1157] ? xas_find+0x31a/0x880 [ 62.462205][ T1157] ? check_preemption_disabled+0x38/0x220 [ 62.467929][ T1157] khugepaged+0x3041/0x3fc0 [ 62.472435][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.478047][ T1157] ? lock_downgrade+0x840/0x840 [ 62.482889][ T1157] ? finish_wait+0x260/0x260 [ 62.487469][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.493256][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.499235][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 62.504239][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.509853][ T1157] kthread+0x3b5/0x4a0 [ 62.513900][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.519592][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.525289][ T1157] ret_from_fork+0x1f/0x30