[ 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 Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.461467][ T38] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/38 [ 56.470534][ T38] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 56.476570][ T38] CPU: 1 PID: 38 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 56.484480][ T38] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.494552][ T38] Workqueue: writeback wb_workfn (flush-8:0) [ 56.500508][ T38] Call Trace: [ 56.503797][ T38] dump_stack+0x188/0x20d [ 56.508128][ T38] debug_smp_processor_id.cold+0x88/0x9b [ 56.513780][ T38] ext4_mb_new_blocks+0xa77/0x3b30 [ 56.518879][ T38] ? __kmalloc+0x62f/0x7a0 [ 56.523287][ T38] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.528751][ T38] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.535429][ T38] ext4_ext_map_blocks+0x2044/0x3410 [ 56.540756][ T38] ? ext4_ext_release+0x10/0x10 [ 56.545666][ T38] ? __down_timeout+0x2d0/0x2d0 [ 56.550510][ T38] ? ext4_es_lookup_extent+0x41d/0xd30 [ 56.555955][ T38] ? debug_smp_processor_id+0x2f/0x185 [ 56.561417][ T38] ext4_map_blocks+0x4cb/0x1640 [ 56.566253][ T38] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.571427][ T38] ? debug_smp_processor_id+0x2f/0x185 [ 56.576874][ T38] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.582591][ T38] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.588664][ T38] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.594339][ T38] ext4_writepages+0x1ab7/0x3400 [ 56.599355][ T38] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.604975][ T38] ? __lock_acquire+0x2224/0x48a0 [ 56.609988][ T38] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.615968][ T38] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.621931][ T38] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.627556][ T38] ? do_writepages+0xfa/0x2a0 [ 56.632297][ T38] do_writepages+0xfa/0x2a0 [ 56.636787][ T38] ? page_writeback_cpu_online+0x10/0x10 [ 56.642396][ T38] ? debug_smp_processor_id+0x2f/0x185 [ 56.647924][ T38] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.653450][ T38] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.659408][ T38] ? lock_downgrade+0x840/0x840 [ 56.664246][ T38] __writeback_single_inode+0x12a/0x1410 [ 56.669897][ T38] ? _raw_spin_unlock+0x24/0x40 [ 56.674752][ T38] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.680723][ T38] writeback_sb_inodes+0x515/0xdd0 [ 56.685825][ T38] ? __writeback_single_inode+0x1410/0x1410 [ 56.691713][ T38] __writeback_inodes_wb+0xc3/0x250 [ 56.696915][ T38] wb_writeback+0x910/0xd90 [ 56.701399][ T38] ? print_usage_bug+0x240/0x240 [ 56.706320][ T38] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.712716][ T38] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.718635][ T38] ? cpumask_next+0x3c/0x40 [ 56.723136][ T38] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.728321][ T38] wb_workfn+0xadf/0x10d0 [ 56.732643][ T38] ? inode_wait_for_writeback+0x30/0x30 [ 56.738169][ T38] ? debug_smp_processor_id+0x2f/0x185 [ 56.743630][ T38] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.749339][ T38] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.755329][ T38] process_one_work+0x965/0x16a0 [ 56.760272][ T38] ? lock_release+0x800/0x800 [ 56.765041][ T38] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.771277][ T38] ? rwlock_bug.part.0+0x90/0x90 [ 56.776217][ T38] worker_thread+0x96/0xe10 [ 56.780732][ T38] ? process_one_work+0x16a0/0x16a0 [ 56.786064][ T38] kthread+0x388/0x470 [ 56.790243][ T38] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.795967][ T38] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.801673][ T38] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. 2020/06/13 17:42:48 fuzzer started 2020/06/13 17:42:49 connecting to host at 10.128.0.26:35117 2020/06/13 17:42:49 checking machine... 2020/06/13 17:42:49 checking revisions... 2020/06/13 17:42:49 testing simple program... [ 58.312026][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6810 [ 58.321219][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.327153][ T6810] CPU: 0 PID: 6810 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.335038][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.345094][ T6810] Call Trace: [ 58.348391][ T6810] dump_stack+0x188/0x20d [ 58.352717][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 58.358346][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.363467][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.368998][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.374955][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 58.380251][ T6810] ? ext4_ext_release+0x10/0x10 [ 58.385098][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 58.389951][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.395393][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 58.400242][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.405443][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.410971][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.416949][ T6810] ? prandom_u32_state+0xe/0x170 [ 58.421868][ T6810] ? __brelse+0x84/0xa0 [ 58.426003][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 58.431109][ T6810] ext4_getblk+0xad/0x520 [ 58.435438][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.441143][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 58.446236][ T6810] ext4_bread+0x7c/0x380 [ 58.450458][ T6810] ? ext4_getblk+0x520/0x520 [ 58.455031][ T6810] ? dqget+0xff0/0xff0 [ 58.459081][ T6810] ext4_append+0x153/0x360 [ 58.463482][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 58.467794][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 58.472279][ T6810] ? security_inode_permission+0xc4/0xf0 [ 58.478000][ T6810] vfs_mkdir+0x419/0x690 [ 58.482288][ T6810] do_mkdirat+0x21e/0x280 [ 58.486608][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.491456][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.497434][ T6810] ? do_syscall_64+0x21/0x7d0 [ 58.502093][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.508157][ T6810] do_syscall_64+0xf6/0x7d0 [ 58.512698][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.518583][ T6810] RIP: 0033:0x4b02a0 [ 58.522485][ T6810] 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 [ 58.543198][ T6810] RSP: 002b:000000c0000e34b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.551642][ T6810] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.559645][ T6810] RDX: 00000000000001c0 RSI: 000000c00009e600 RDI: ffffffffffffff9c [ 58.567623][ T6810] RBP: 000000c0000e3510 R08: 0000000000000000 R09: 0000000000000000 [ 58.575575][ T6810] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.583828][ T6810] R13: 0000000000000031 R14: 0000000000000030 R15: 0000000000000100 [ 58.612655][ T6824] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6824 [ 58.622173][ T6824] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.628087][ T6824] CPU: 1 PID: 6824 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.636323][ T6824] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.646386][ T6824] Call Trace: [ 58.649671][ T6824] dump_stack+0x188/0x20d [ 58.654016][ T6824] debug_smp_processor_id.cold+0x88/0x9b [ 58.659762][ T6824] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.664898][ T6824] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.670448][ T6824] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.676164][ T6824] ext4_ext_map_blocks+0x2044/0x3410 [ 58.681454][ T6824] ? ext4_ext_release+0x10/0x10 [ 58.686327][ T6824] ? __down_timeout+0x2d0/0x2d0 [ 58.691161][ T6824] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.696691][ T6824] ext4_map_blocks+0x4cb/0x1640 [ 58.701531][ T6824] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.706706][ T6824] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.712229][ T6824] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.718200][ T6824] ? prandom_u32_state+0xe/0x170 [ 58.723213][ T6824] ? __brelse+0x84/0xa0 [ 58.727345][ T6824] ? __ext4_new_inode+0x144/0x57c0 [ 58.732451][ T6824] ext4_getblk+0xad/0x520 [ 58.736760][ T6824] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.742471][ T6824] ? ext4_free_inode+0x17e0/0x17e0 [ 58.747571][ T6824] ext4_bread+0x7c/0x380 [ 58.752089][ T6824] ? ext4_getblk+0x520/0x520 [ 58.757529][ T6824] ? dqget+0xff0/0xff0 [ 58.761608][ T6824] ext4_append+0x153/0x360 [ 58.766057][ T6824] ext4_mkdir+0x5e0/0xdf0 [ 58.770391][ T6824] ? ext4_rmdir+0xde0/0xde0 [ 58.774903][ T6824] ? security_inode_permission+0xc4/0xf0 [ 58.780746][ T6824] vfs_mkdir+0x419/0x690 [ 58.784983][ T6824] do_mkdirat+0x21e/0x280 [ 58.789413][ T6824] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.794273][ T6824] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.800251][ T6824] ? do_syscall_64+0x21/0x7d0 [ 58.804915][ T6824] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.810888][ T6824] do_syscall_64+0xf6/0x7d0 [ 58.815398][ T6824] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.821304][ T6824] RIP: 0033:0x45bee7 [ 58.825178][ T6824] 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 [ 58.844791][ T6824] RSP: 002b:00007ffc71e86a18 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.853897][ T6824] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.861847][ T6824] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc71e86bf0 [ 58.869831][ T6824] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002f40 [ 58.877802][ T6824] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.885754][ T6824] R13: 00007ffc71e86bf0 R14: 8421084210842109 R15: 00007ffc71e86bfc [ 58.968327][ T6825] IPVS: ftp: loaded support on port[0] = 21 [ 59.007876][ T6825] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6825 [ 59.017717][ T6825] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.024003][ T6825] CPU: 0 PID: 6825 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.032442][ T6825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.042590][ T6825] Call Trace: [ 59.045953][ T6825] dump_stack+0x188/0x20d [ 59.050414][ T6825] debug_smp_processor_id.cold+0x88/0x9b [ 59.056055][ T6825] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.061787][ T6825] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.067249][ T6825] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.072952][ T6825] ext4_ext_map_blocks+0x2044/0x3410 [ 59.078231][ T6825] ? ext4_ext_release+0x10/0x10 [ 59.083068][ T6825] ? __down_timeout+0x2d0/0x2d0 [ 59.087893][ T6825] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.093336][ T6825] ext4_map_blocks+0x4cb/0x1640 [ 59.098217][ T6825] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.103402][ T6825] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.108944][ T6825] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.114930][ T6825] ? prandom_u32_state+0xe/0x170 [ 59.120704][ T6825] ? __brelse+0x84/0xa0 [ 59.124873][ T6825] ? __ext4_new_inode+0x144/0x57c0 [ 59.130167][ T6825] ext4_getblk+0xad/0x520 [ 59.134512][ T6825] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.140230][ T6825] ? ext4_free_inode+0x17e0/0x17e0 [ 59.145325][ T6825] ext4_bread+0x7c/0x380 [ 59.149546][ T6825] ? ext4_getblk+0x520/0x520 [ 59.154131][ T6825] ? dqget+0xff0/0xff0 [ 59.158194][ T6825] ext4_append+0x153/0x360 [ 59.162612][ T6825] ext4_mkdir+0x5e0/0xdf0 [ 59.167899][ T6825] ? ext4_rmdir+0xde0/0xde0 [ 59.172401][ T6825] ? security_inode_permission+0xc4/0xf0 [ 59.178045][ T6825] vfs_mkdir+0x419/0x690 [ 59.182280][ T6825] do_mkdirat+0x21e/0x280 [ 59.186604][ T6825] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.191443][ T6825] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.197439][ T6825] ? do_syscall_64+0x21/0x7d0 [ 59.202100][ T6825] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.209027][ T6825] do_syscall_64+0xf6/0x7d0 [ 59.213551][ T6825] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.219442][ T6825] RIP: 0033:0x45bee7 [ 59.223317][ T6825] 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 [ 59.244161][ T6825] RSP: 002b:00007ffc71e86908 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.252552][ T6825] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.260512][ T6825] RDX: 00007ffc71e86953 RSI: 00000000000001ff RDI: 00007ffc71e86950 [ 59.268573][ T6825] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.276612][ T6825] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 59.284573][ T6825] R13: 00007ffc71e86940 R14: 0000000000000000 R15: 00007ffc71e86950 [ 59.334749][ T6825] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6825 [ 59.344963][ T6825] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.350869][ T6825] CPU: 1 PID: 6825 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.359104][ T6825] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.369596][ T6825] Call Trace: [ 59.372897][ T6825] dump_stack+0x188/0x20d [ 59.377272][ T6825] debug_smp_processor_id.cold+0x88/0x9b [ 59.382916][ T6825] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.388154][ T6825] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.393758][ T6825] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.399483][ T6825] ext4_ext_map_blocks+0x2044/0x3410 [ 59.404765][ T6825] ? ext4_ext_release+0x10/0x10 [ 59.409627][ T6825] ? __down_timeout+0x2d0/0x2d0 [ 59.414526][ T6825] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.419980][ T6825] ext4_map_blocks+0x4cb/0x1640 [ 59.424837][ T6825] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.430037][ T6825] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.435697][ T6825] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.441689][ T6825] ? prandom_u32_state+0xe/0x170 [ 59.446690][ T6825] ? __brelse+0x84/0xa0 [ 59.450850][ T6825] ? __ext4_new_inode+0x144/0x57c0 [ 59.455979][ T6825] ext4_getblk+0xad/0x520 [ 59.460297][ T6825] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.466001][ T6825] ? ext4_free_inode+0x17e0/0x17e0 [ 59.471130][ T6825] ext4_bread+0x7c/0x380 [ 59.475375][ T6825] ? ext4_getblk+0x520/0x520 [ 59.479956][ T6825] ? dqget+0xff0/0xff0 [ 59.484080][ T6825] ext4_append+0x153/0x360 [ 59.488491][ T6825] ext4_mkdir+0x5e0/0xdf0 [ 59.492803][ T6825] ? ext4_rmdir+0xde0/0xde0 [ 59.497311][ T6825] ? security_inode_permission+0xc4/0xf0 [ 59.502932][ T6825] vfs_mkdir+0x419/0x690 [ 59.507205][ T6825] do_mkdirat+0x21e/0x280 [ 59.511522][ T6825] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.516408][ T6825] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.522394][ T6825] ? do_syscall_64+0x21/0x7d0 [ 59.527092][ T6825] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.533192][ T6825] do_syscall_64+0xf6/0x7d0 [ 59.537708][ T6825] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.543784][ T6825] RIP: 0033:0x45bee7 [ 59.547678][ T6825] 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 [ 59.567354][ T6825] RSP: 002b:00007ffc71e86908 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.575759][ T6825] RAX: ffffffffffffffda RBX: 000000000000e7bd RCX: 000000000045bee7 2020/06/13 17:42:50 building call list... [ 59.583716][ T6825] RDX: 00007ffc71e86953 RSI: 00000000000001ff RDI: 00007ffc71e86950 [ 59.591683][ T6825] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.599653][ T6825] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 59.607693][ T6825] R13: 00007ffc71e86940 R14: 000000000000e7ad R15: 00007ffc71e86950 [ 59.907655][ T38] tipc: TX() has been purged, node left! [ 61.050775][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.060052][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.066024][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.073904][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.083962][ T1155] Call Trace: [ 61.087264][ T1155] dump_stack+0x188/0x20d [ 61.091598][ T1155] debug_smp_processor_id.cold+0x88/0x9b [ 61.097228][ T1155] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.102330][ T1155] ? __kmalloc+0x62f/0x7a0 [ 61.106752][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.112202][ T1155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.117920][ T1155] ext4_ext_map_blocks+0x2044/0x3410 [ 61.123908][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.128769][ T1155] ? __down_timeout+0x2d0/0x2d0 [ 61.133614][ T1155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.139083][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.143937][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 executing program [ 61.149127][ T1155] ? debug_smp_processor_id+0x2f/0x185 [ 61.154594][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.160137][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.166220][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.172042][ T1155] ext4_writepages+0x1ab7/0x3400 [ 61.176978][ T1155] ? mark_lock+0x30/0xdd0 [ 61.181318][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.186974][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.192602][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.197285][ T1155] do_writepages+0xfa/0x2a0 [ 61.201816][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.207454][ T1155] ? do_raw_spin_lock+0x129/0x2e0 [ 61.212516][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.217726][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.222581][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.228326][ T1155] ? collapse_file+0x3575/0x4300 [ 61.233280][ T1155] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.239511][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.244717][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.251123][ T1155] collapse_file+0x357f/0x4300 [ 61.255929][ T1155] ? collapse_huge_page+0x4370/0x4370 [ 61.261328][ T1155] ? khugepaged+0x24fa/0x3f80 [ 61.261359][ T1155] khugepaged+0x3049/0x3f80 [ 61.270522][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.276156][ T1155] ? lock_downgrade+0x840/0x840 [ 61.281023][ T1155] ? finish_wait+0x260/0x260 [ 61.281042][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.291430][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.297421][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.302452][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.308084][ T1155] kthread+0x388/0x470 [ 61.312235][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.317947][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.323662][ T1155] ret_from_fork+0x24/0x30 [ 61.388175][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.397300][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.403195][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.411070][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.423383][ T1155] Call Trace: [ 61.426675][ T1155] dump_stack+0x188/0x20d [ 61.431022][ T1155] debug_smp_processor_id.cold+0x88/0x9b [ 61.436648][ T1155] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.441775][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.447235][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.453383][ T1155] ext4_ext_map_blocks+0x2044/0x3410 [ 61.458671][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.463533][ T1155] ? __down_timeout+0x2d0/0x2d0 [ 61.468383][ T1155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.473843][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.478699][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.483890][ T1155] ? debug_smp_processor_id+0x2f/0x185 [ 61.489354][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.494897][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.500877][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.506340][ T1155] ext4_writepages+0x1ab7/0x3400 [ 61.511296][ T1155] ? mark_lock+0x30/0xdd0 [ 61.516333][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.521995][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.527622][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.532291][ T1155] do_writepages+0xfa/0x2a0 [ 61.536794][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.542433][ T1155] ? do_raw_spin_lock+0x129/0x2e0 [ 61.547451][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.552663][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.557512][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.563226][ T1155] ? collapse_file+0x3575/0x4300 [ 61.568157][ T1155] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.574400][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.580723][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.586708][ T1155] collapse_file+0x357f/0x4300 [ 61.591501][ T1155] ? collapse_huge_page+0x4370/0x4370 [ 61.596869][ T1155] ? khugepaged+0x24fa/0x3f80 [ 61.601562][ T1155] khugepaged+0x3049/0x3f80 [ 61.606086][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.611714][ T1155] ? lock_downgrade+0x840/0x840 [ 61.616560][ T1155] ? finish_wait+0x260/0x260 [ 61.621172][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.626990][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.632974][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.638000][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.643637][ T1155] kthread+0x388/0x470 [ 61.647698][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.653410][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.659127][ T1155] ret_from_fork+0x24/0x30 [ 61.730672][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.739731][ T1155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.745760][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.753738][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.763791][ T1155] Call Trace: [ 61.767076][ T1155] dump_stack+0x188/0x20d [ 61.771407][ T1155] debug_smp_processor_id.cold+0x88/0x9b [ 61.777131][ T1155] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.782238][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.787681][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.793835][ T1155] ext4_ext_map_blocks+0x2044/0x3410 [ 61.799129][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.803972][ T1155] ? __down_timeout+0x2d0/0x2d0 [ 61.808804][ T1155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.814256][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.819107][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.824283][ T1155] ? debug_smp_processor_id+0x2f/0x185 [ 61.829728][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.835255][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.841214][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.846657][ T1155] ext4_writepages+0x1ab7/0x3400 [ 61.851582][ T1155] ? mark_lock+0x30/0xdd0 [ 61.855908][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.861539][ T1155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.867159][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.871839][ T1155] do_writepages+0xfa/0x2a0 [ 61.876329][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.881962][ T1155] ? do_raw_spin_lock+0x129/0x2e0 [ 61.886965][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.892147][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.896980][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.902681][ T1155] ? collapse_file+0x3575/0x4300 [ 61.907615][ T1155] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.913667][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.918847][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.924812][ T1155] collapse_file+0x357f/0x4300 [ 61.929571][ T1155] ? collapse_huge_page+0x4370/0x4370 [ 61.934940][ T1155] ? khugepaged+0x24fa/0x3f80 [ 61.939609][ T1155] khugepaged+0x3049/0x3f80 [ 61.944113][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.949739][ T1155] ? lock_downgrade+0x840/0x840 [ 61.954842][ T1155] ? finish_wait+0x260/0x260 [ 61.959414][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.965217][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.971297][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.976320][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.981932][ T1155] kthread+0x388/0x470 [ 61.985984][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.992999][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.998702][ T1155] ret_from_fork+0x24/0x30 [ 62.071007][ T6808] can: request_module (can-proto-0) failed. [ 62.452259][ T6808] can: request_module (can-proto-0) failed. [ 62.464488][ T6808] can: request_module (can-proto-0) failed.