[ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ 50.192535][ T6697] sshd (6697) used greatest stack depth: 23040 bytes left [ 50.206177][ T4813] systemd-udevd (4813) used greatest stack depth: 22880 bytes left [ 50.232798][ T4773] systemd-udevd (4773) used greatest stack depth: 22160 bytes left [ 50.590035][ T6702] bash (6702) used greatest stack depth: 20784 bytes left [ 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 Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ 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: [ 55.547026][ T7] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:0/7 [ 55.555986][ T7] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.562186][ T7] CPU: 0 PID: 7 Comm: kworker/u4:0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 55.571432][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.581477][ T7] Workqueue: writeback wb_workfn (flush-8:0) [ 55.587435][ T7] Call Trace: [ 55.590708][ T7] dump_stack+0x18f/0x20d [ 55.595039][ T7] check_preemption_disabled+0x20d/0x220 [ 55.600652][ T7] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.605742][ T7] ? ext4_find_extent+0x81a/0xad0 [ 55.610823][ T7] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.616267][ T7] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.622042][ T7] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.627329][ T7] ? ext4_ext_release+0x10/0x10 [ 55.632196][ T7] ? down_write_killable+0x170/0x170 [ 55.637478][ T7] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.642932][ T7] ext4_map_blocks+0x4cb/0x1640 [ 55.647783][ T7] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.652964][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.658494][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.664474][ T7] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.669913][ T7] ext4_writepages+0x1a7b/0x33c0 [ 55.675812][ T7] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.681439][ T7] ? __lock_acquire+0x2224/0x48b0 [ 55.686467][ T7] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.692442][ T7] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.698401][ T7] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.704010][ T7] ? do_writepages+0xfa/0x2a0 [ 55.708665][ T7] do_writepages+0xfa/0x2a0 [ 55.713161][ T7] ? page_writeback_cpu_online+0x10/0x10 [ 55.718781][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.724304][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.730260][ T7] ? lock_downgrade+0x840/0x840 [ 55.735525][ T7] __writeback_single_inode+0x12a/0x13d0 [ 55.741144][ T7] ? _raw_spin_unlock+0x24/0x40 [ 55.745973][ T7] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.751966][ T7] writeback_sb_inodes+0x515/0xdc0 [ 55.757062][ T7] ? __writeback_single_inode+0x13d0/0x13d0 [ 55.762958][ T7] __writeback_inodes_wb+0xc3/0x250 [ 55.768156][ T7] wb_writeback+0x8db/0xd50 [ 55.772643][ T7] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.778946][ T7] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.784819][ T7] ? cpumask_next+0x3c/0x40 [ 55.789301][ T7] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.794493][ T7] wb_workfn+0xab3/0x1090 [ 55.798805][ T7] ? inode_wait_for_writeback+0x30/0x30 [ 55.804332][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.809862][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.815822][ T7] process_one_work+0x965/0x1690 [ 55.820762][ T7] ? lock_release+0x800/0x800 [ 55.825433][ T7] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.830786][ T7] ? rwlock_bug.part.0+0x90/0x90 [ 55.835708][ T7] worker_thread+0x96/0xe10 [ 55.840197][ T7] ? process_one_work+0x1690/0x1690 [ 55.845371][ T7] kthread+0x3b5/0x4a0 [ 55.849432][ T7] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.855127][ T7] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.860823][ T7] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.1.10' (ECDSA) to the list of known hosts. 2020/06/05 07:24:23 fuzzer started 2020/06/05 07:24:23 connecting to host at 10.128.0.26:33627 2020/06/05 07:24:23 checking machine... 2020/06/05 07:24:23 checking revisions... 2020/06/05 07:24:23 testing simple program... [ 58.410561][ T6795] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6795 [ 58.419670][ T6795] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.425550][ T6795] CPU: 1 PID: 6795 Comm: syz-fuzzer Not tainted 5.7.0-next-20200605-syzkaller #0 [ 58.434729][ T6795] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.444798][ T6795] Call Trace: [ 58.448072][ T6795] dump_stack+0x18f/0x20d [ 58.452419][ T6795] check_preemption_disabled+0x20d/0x220 [ 58.458067][ T6795] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.463182][ T6795] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.468646][ T6795] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.474374][ T6795] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.479660][ T6795] ? ext4_ext_release+0x10/0x10 [ 58.484514][ T6795] ? down_write_killable+0x170/0x170 [ 58.490138][ T6795] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.495595][ T6795] ext4_map_blocks+0x4cb/0x1640 [ 58.500427][ T6795] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.505603][ T6795] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.511125][ T6795] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.517085][ T6795] ? prandom_u32_state+0xe/0x170 [ 58.522004][ T6795] ? __brelse+0x84/0xa0 [ 58.526153][ T6795] ? __ext4_new_inode+0x144/0x55e0 [ 58.531243][ T6795] ext4_getblk+0xad/0x520 [ 58.535555][ T6795] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.541255][ T6795] ? ext4_free_inode+0x1700/0x1700 [ 58.546344][ T6795] ext4_bread+0x7c/0x380 [ 58.550577][ T6795] ? ext4_getblk+0x520/0x520 [ 58.555144][ T6795] ? dquot_get_next_dqblk+0x180/0x180 [ 58.560519][ T6795] ext4_append+0x153/0x360 [ 58.564933][ T6795] ext4_mkdir+0x5e0/0xdf0 [ 58.569244][ T6795] ? ext4_rmdir+0xde0/0xde0 [ 58.573727][ T6795] ? security_inode_permission+0xc4/0xf0 [ 58.579341][ T6795] vfs_mkdir+0x419/0x690 [ 58.583578][ T6795] do_mkdirat+0x21e/0x280 [ 58.587886][ T6795] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.592715][ T6795] ? do_syscall_64+0x1c/0xe0 [ 58.597286][ T6795] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.603243][ T6795] do_syscall_64+0x60/0xe0 [ 58.607638][ T6795] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.613523][ T6795] RIP: 0033:0x4b02a0 [ 58.617398][ T6795] Code: Bad RIP value. [ 58.621456][ T6795] RSP: 002b:000000c0000cd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.629868][ T6795] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.637855][ T6795] RDX: 00000000000001c0 RSI: 000000c000026ce0 RDI: ffffffffffffff9c [ 58.645828][ T6795] RBP: 000000c0000cd510 R08: 0000000000000000 R09: 0000000000000000 [ 58.653786][ T6795] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.662027][ T6795] R13: 0000000000000068 R14: 0000000000000067 R15: 0000000000000100 [ 58.687498][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 58.697043][ T6810] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.702921][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 58.712405][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.722462][ T6810] Call Trace: [ 58.725740][ T6810] dump_stack+0x18f/0x20d [ 58.730071][ T6810] check_preemption_disabled+0x20d/0x220 [ 58.735703][ T6810] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.740830][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.746286][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.752006][ T6810] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.757294][ T6810] ? ext4_ext_release+0x10/0x10 [ 58.762135][ T6810] ? down_write_killable+0x170/0x170 [ 58.767418][ T6810] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.772939][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 58.777791][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.782976][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.788504][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.794473][ T6810] ? prandom_u32_state+0xe/0x170 [ 58.799409][ T6810] ? __brelse+0x84/0xa0 [ 58.803546][ T6810] ? __ext4_new_inode+0x144/0x55e0 [ 58.808639][ T6810] ext4_getblk+0xad/0x520 [ 58.812947][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.818648][ T6810] ? ext4_free_inode+0x1700/0x1700 [ 58.823738][ T6810] ext4_bread+0x7c/0x380 [ 58.827975][ T6810] ? ext4_getblk+0x520/0x520 [ 58.832542][ T6810] ? dquot_get_next_dqblk+0x180/0x180 [ 58.837898][ T6810] ext4_append+0x153/0x360 [ 58.842296][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 58.846610][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 58.851108][ T6810] ? security_inode_permission+0xc4/0xf0 [ 58.856739][ T6810] vfs_mkdir+0x419/0x690 [ 58.860982][ T6810] do_mkdirat+0x21e/0x280 [ 58.865307][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.870223][ T6810] ? do_syscall_64+0x1c/0xe0 [ 58.874793][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.880769][ T6810] do_syscall_64+0x60/0xe0 [ 58.885164][ T6810] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.891034][ T6810] RIP: 0033:0x45bee7 [ 58.894917][ T6810] Code: Bad RIP value. [ 58.899047][ T6810] RSP: 002b:00007ffe39469588 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.907433][ T6810] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.915380][ T6810] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffe39469760 [ 58.923341][ T6810] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000033c0 [ 58.931662][ T6810] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.939613][ T6810] R13: 00007ffe39469760 R14: 8421084210842109 R15: 00007ffe3946976c [ 59.025664][ T6811] IPVS: ftp: loaded support on port[0] = 21 [ 59.062375][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 59.072033][ T6811] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.078281][ T6811] CPU: 1 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 59.087737][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.097904][ T6811] Call Trace: [ 59.101187][ T6811] dump_stack+0x18f/0x20d [ 59.105658][ T6811] check_preemption_disabled+0x20d/0x220 [ 59.111302][ T6811] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.116404][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.121846][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.127584][ T6811] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.132852][ T6811] ? ext4_ext_release+0x10/0x10 [ 59.137694][ T6811] ? down_write_killable+0x170/0x170 [ 59.142957][ T6811] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.148396][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 59.153245][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.158436][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.163961][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.169924][ T6811] ? prandom_u32_state+0xe/0x170 [ 59.174855][ T6811] ? __brelse+0x84/0xa0 [ 59.179014][ T6811] ? __ext4_new_inode+0x144/0x55e0 [ 59.184120][ T6811] ext4_getblk+0xad/0x520 [ 59.188430][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.194320][ T6811] ? ext4_free_inode+0x1700/0x1700 [ 59.199420][ T6811] ext4_bread+0x7c/0x380 [ 59.203642][ T6811] ? ext4_getblk+0x520/0x520 [ 59.208214][ T6811] ? dquot_get_next_dqblk+0x180/0x180 [ 59.213571][ T6811] ext4_append+0x153/0x360 [ 59.217971][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 59.222300][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 59.226786][ T6811] ? security_inode_permission+0xc4/0xf0 [ 59.232445][ T6811] vfs_mkdir+0x419/0x690 [ 59.236708][ T6811] do_mkdirat+0x21e/0x280 [ 59.241039][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.245898][ T6811] ? do_syscall_64+0x1c/0xe0 [ 59.250490][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.256482][ T6811] do_syscall_64+0x60/0xe0 [ 59.260895][ T6811] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.266781][ T6811] RIP: 0033:0x45bee7 [ 59.270648][ T6811] Code: Bad RIP value. [ 59.274686][ T6811] RSP: 002b:00007ffe39469478 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.283517][ T6811] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.291642][ T6811] RDX: 00007ffe394694c3 RSI: 00000000000001ff RDI: 00007ffe394694c0 [ 59.299599][ T6811] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.307570][ T6811] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 59.315517][ T6811] R13: 00007ffe394694b0 R14: 0000000000000000 R15: 00007ffe394694c0 [ 59.368237][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 59.377861][ T6811] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.383762][ T6811] CPU: 1 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-next-20200605-syzkaller #0 [ 59.393301][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.403354][ T6811] Call Trace: [ 59.406655][ T6811] dump_stack+0x18f/0x20d [ 59.411000][ T6811] check_preemption_disabled+0x20d/0x220 [ 59.416645][ T6811] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.421762][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.427224][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.432942][ T6811] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.438232][ T6811] ? ext4_ext_release+0x10/0x10 [ 59.443099][ T6811] ? down_write_killable+0x170/0x170 [ 59.448386][ T6811] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.453851][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 59.458706][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.463900][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.469439][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.475396][ T6811] ? prandom_u32_state+0xe/0x170 [ 59.480335][ T6811] ? __brelse+0x84/0xa0 [ 59.484478][ T6811] ? __ext4_new_inode+0x144/0x55e0 [ 59.489568][ T6811] ext4_getblk+0xad/0x520 [ 59.493877][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.499603][ T6811] ? ext4_free_inode+0x1700/0x1700 [ 59.504691][ T6811] ext4_bread+0x7c/0x380 [ 59.508930][ T6811] ? ext4_getblk+0x520/0x520 [ 59.513512][ T6811] ? dquot_get_next_dqblk+0x180/0x180 [ 59.518881][ T6811] ext4_append+0x153/0x360 [ 59.523297][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 59.527611][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 59.532097][ T6811] ? security_inode_permission+0xc4/0xf0 [ 59.537803][ T6811] vfs_mkdir+0x419/0x690 [ 59.542027][ T6811] do_mkdirat+0x21e/0x280 [ 59.546336][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.551167][ T6811] ? do_syscall_64+0x1c/0xe0 [ 59.555735][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.561697][ T6811] do_syscall_64+0x60/0xe0 [ 59.566094][ T6811] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.571962][ T6811] RIP: 0033:0x45bee7 [ 59.575833][ T6811] Code: Bad RIP value. [ 59.579881][ T6811] RSP: 002b:00007ffe39469478 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.588284][ T6811] RAX: ffffffffffffffda RBX: 000000000000e7df RCX: 000000000045bee7 [ 59.596233][ T6811] RDX: 00007ffe394694c3 RSI: 00000000000001ff RDI: 00007ffe394694c0 [ 59.604198][ T6811] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/05 07:24:24 building call list... [ 59.612166][ T6811] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 59.620116][ T6811] R13: 00007ffe394694b0 R14: 000000000000e7ca R15: 00007ffe394694c0 [ 59.875855][ T6369] tipc: TX() has been purged, node left! executing program [ 61.322861][ T6837] can: request_module (can-proto-0) failed. [ 61.548856][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.558133][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.564013][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 61.573178][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.583211][ T1154] Call Trace: [ 61.586503][ T1154] dump_stack+0x18f/0x20d [ 61.590831][ T1154] check_preemption_disabled+0x20d/0x220 [ 61.596465][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.601555][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 61.606564][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.612020][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.618073][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.623357][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.628219][ T1154] ? down_write_killable+0x170/0x170 [ 61.633613][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.639062][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.643900][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.649101][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.654629][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.660617][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.666057][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 61.670979][ T1154] ? lock_release+0x710/0x800 [ 61.675682][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.681341][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.686954][ T1154] ? do_writepages+0xfa/0x2a0 [ 61.691613][ T1154] do_writepages+0xfa/0x2a0 [ 61.696101][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 61.701712][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 61.706715][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 61.712000][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 61.716832][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.722533][ T1154] ? collapse_file+0x35a2/0x4330 [ 61.727458][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.733506][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.738699][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.744662][ T1154] collapse_file+0x35ac/0x4330 [ 61.749504][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 61.755984][ T1154] ? khugepaged+0x2506/0x3fc0 [ 61.760664][ T1154] ? xas_find+0x31a/0x880 [ 61.764974][ T1154] ? check_preemption_disabled+0x38/0x220 [ 61.770691][ T1154] khugepaged+0x3041/0x3fc0 [ 61.775187][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.780825][ T1154] ? lock_downgrade+0x840/0x840 [ 61.785656][ T1154] ? finish_wait+0x260/0x260 [ 61.790227][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.796016][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.801998][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.807002][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.812623][ T1154] kthread+0x3b5/0x4a0 [ 61.816684][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.822422][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.828138][ T1154] ret_from_fork+0x1f/0x30 [ 61.898715][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.907863][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.913762][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 61.922865][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.932915][ T1154] Call Trace: [ 61.936249][ T1154] dump_stack+0x18f/0x20d [ 61.940572][ T1154] check_preemption_disabled+0x20d/0x220 [ 61.946185][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.951296][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.956735][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.962884][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.968175][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.973015][ T1154] ? down_write_killable+0x170/0x170 [ 61.978277][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.983730][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.988585][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.993778][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.999304][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.005260][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.010800][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 62.015719][ T1154] ? lock_release+0x710/0x800 [ 62.020382][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.026091][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.031712][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.036492][ T1154] do_writepages+0xfa/0x2a0 [ 62.040997][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.046611][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 62.051629][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.056827][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.061660][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.067379][ T1154] ? collapse_file+0x35a2/0x4330 [ 62.072320][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.078394][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.083589][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.089557][ T1154] collapse_file+0x35ac/0x4330 [ 62.094317][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 62.099783][ T1154] ? khugepaged+0x2506/0x3fc0 [ 62.104453][ T1154] ? xas_find+0x31a/0x880 [ 62.108771][ T1154] ? check_preemption_disabled+0x38/0x220 [ 62.114478][ T1154] khugepaged+0x3041/0x3fc0 [ 62.118979][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.124592][ T1154] ? lock_downgrade+0x840/0x840 [ 62.129424][ T1154] ? finish_wait+0x260/0x260 [ 62.133996][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.139796][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.145773][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.150785][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.156405][ T1154] kthread+0x3b5/0x4a0 [ 62.160449][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.166146][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.171849][ T1154] ret_from_fork+0x1f/0x30 [ 62.219745][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 62.229228][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.235118][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-next-20200605-syzkaller #0 [ 62.244204][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.254252][ T1154] Call Trace: [ 62.257637][ T1154] dump_stack+0x18f/0x20d [ 62.261973][ T1154] check_preemption_disabled+0x20d/0x220 [ 62.267616][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.272738][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.278379][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.284616][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.289910][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.294776][ T1154] ? down_write_killable+0x170/0x170 [ 62.300064][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.305524][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.310380][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.315579][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.321123][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.327099][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.332641][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 62.337572][ T1154] ? lock_release+0x710/0x800 [ 62.342236][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.347860][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.353482][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.358157][ T1154] do_writepages+0xfa/0x2a0 [ 62.362645][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.368253][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 62.373254][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.378435][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.383268][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.388981][ T1154] ? collapse_file+0x35a2/0x4330 [ 62.393907][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.399971][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.405673][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.411723][ T1154] collapse_file+0x35ac/0x4330 [ 62.416951][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 62.422320][ T1154] ? khugepaged+0x2506/0x3fc0 [ 62.427026][ T1154] ? xas_find+0x31a/0x880 [ 62.431344][ T1154] ? check_preemption_disabled+0x38/0x220 [ 62.437056][ T1154] khugepaged+0x3041/0x3fc0 [ 62.441583][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.447211][ T1154] ? lock_downgrade+0x840/0x840 [ 62.452045][ T1154] ? finish_wait+0x260/0x260 [ 62.456618][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.462406][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.468393][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.473432][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.479130][ T1154] kthread+0x3b5/0x4a0 [ 62.483196][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.488904][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.494635][ T1154] ret_from_fork+0x1f/0x30 [ 62.672737][ T6837] can: request_module (can-proto-0) failed. [ 62.684748][ T6837] can: request_module (can-proto-0) failed.