Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 57.907282][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 57.916445][ T21] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.922854][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 57.930743][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.940944][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 57.946905][ T21] Call Trace: [ 57.950194][ T21] dump_stack+0x188/0x20d [ 57.954507][ T21] debug_smp_processor_id.cold+0x88/0x9b [ 57.960140][ T21] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.965236][ T21] ? __kmalloc+0x62f/0x7a0 [ 57.970769][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.977212][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.982949][ T21] ext4_ext_map_blocks+0x2044/0x3410 [ 57.988217][ T21] ? ext4_ext_release+0x10/0x10 [ 57.993155][ T21] ? __down_timeout+0x2d0/0x2d0 [ 57.998158][ T21] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.003688][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.009401][ T21] ext4_map_blocks+0x4cb/0x1640 [ 58.014232][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.019420][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.024866][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.030390][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.036432][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.041882][ T21] ext4_writepages+0x1ab7/0x3400 [ 58.046823][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.052497][ T21] ? __lock_acquire+0x2224/0x48a0 [ 58.058122][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.064090][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.070075][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.075690][ T21] ? do_writepages+0xfa/0x2a0 [ 58.080355][ T21] do_writepages+0xfa/0x2a0 [ 58.084849][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 58.090462][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.095907][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.101431][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.107997][ T21] ? lock_downgrade+0x840/0x840 [ 58.112914][ T21] __writeback_single_inode+0x12a/0x1410 [ 58.118534][ T21] ? _raw_spin_unlock+0x24/0x40 [ 58.123796][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 58.129759][ T21] writeback_sb_inodes+0x515/0xdd0 [ 58.134873][ T21] ? __writeback_single_inode+0x1410/0x1410 [ 58.140842][ T21] __writeback_inodes_wb+0xc3/0x250 [ 58.146019][ T21] wb_writeback+0x910/0xd90 [ 58.150527][ T21] ? print_usage_bug+0x240/0x240 [ 58.155466][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 58.162154][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 58.168436][ T21] ? cpumask_next+0x3c/0x40 [ 58.172947][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 58.178132][ T21] wb_workfn+0xadf/0x10d0 [ 58.182448][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 58.188070][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.193522][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.199046][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.205363][ T21] process_one_work+0x965/0x16a0 [ 58.210305][ T21] ? lock_release+0x800/0x800 [ 58.215019][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.220394][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 58.225349][ T21] worker_thread+0x96/0xe10 [ 58.229842][ T21] ? process_one_work+0x16a0/0x16a0 [ 58.235045][ T21] kthread+0x388/0x470 [ 58.239193][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.244887][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.250594][ T21] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.15.213' (ECDSA) to the list of known hosts. 2020/06/15 08:55:30 fuzzer started 2020/06/15 08:55:30 connecting to host at 10.128.0.26:37607 2020/06/15 08:55:30 checking machine... 2020/06/15 08:55:30 checking revisions... 2020/06/15 08:55:30 testing simple program... [ 61.050268][ T6830] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6830 [ 61.059369][ T6830] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.065319][ T6830] CPU: 1 PID: 6830 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 61.073302][ T6830] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.083349][ T6830] Call Trace: [ 61.086792][ T6830] dump_stack+0x188/0x20d [ 61.091291][ T6830] debug_smp_processor_id.cold+0x88/0x9b [ 61.097203][ T6830] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.102413][ T6830] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.107861][ T6830] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.113748][ T6830] ext4_ext_map_blocks+0x2044/0x3410 [ 61.119018][ T6830] ? ext4_ext_release+0x10/0x10 [ 61.123876][ T6830] ? __down_timeout+0x2d0/0x2d0 [ 61.129091][ T6830] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.134716][ T6830] ext4_map_blocks+0x4cb/0x1640 [ 61.139869][ T6830] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.145138][ T6830] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.150682][ T6830] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.156658][ T6830] ? prandom_u32_state+0xe/0x170 [ 61.161592][ T6830] ? __brelse+0x84/0xa0 [ 61.165734][ T6830] ? __ext4_new_inode+0x144/0x57c0 [ 61.170843][ T6830] ext4_getblk+0xad/0x520 [ 61.175169][ T6830] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.180899][ T6830] ? ext4_free_inode+0x17e0/0x17e0 [ 61.186026][ T6830] ext4_bread+0x7c/0x380 [ 61.190261][ T6830] ? ext4_getblk+0x520/0x520 [ 61.194851][ T6830] ? dqget+0xff0/0xff0 [ 61.199165][ T6830] ext4_append+0x153/0x360 [ 61.203701][ T6830] ext4_mkdir+0x5e0/0xdf0 [ 61.208149][ T6830] ? ext4_rmdir+0xde0/0xde0 [ 61.212727][ T6830] ? security_inode_permission+0xc4/0xf0 [ 61.218441][ T6830] vfs_mkdir+0x419/0x690 [ 61.222666][ T6830] do_mkdirat+0x21e/0x280 [ 61.226977][ T6830] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.231843][ T6830] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.237936][ T6830] ? do_syscall_64+0x21/0x7d0 [ 61.242614][ T6830] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.248665][ T6830] do_syscall_64+0xf6/0x7d0 [ 61.253267][ T6830] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.259151][ T6830] RIP: 0033:0x4b02a0 [ 61.263045][ T6830] 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 [ 61.283550][ T6830] RSP: 002b:000000c0001574b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 61.293264][ T6830] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 61.301493][ T6830] RDX: 00000000000001c0 RSI: 000000c00009eda0 RDI: ffffffffffffff9c [ 61.309450][ T6830] RBP: 000000c000157510 R08: 0000000000000000 R09: 0000000000000000 [ 61.317397][ T6830] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 61.325353][ T6830] R13: 000000000000006e R14: 000000000000006d R15: 0000000000000100 [ 61.352373][ T6842] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6842 [ 61.361962][ T6842] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.367950][ T6842] CPU: 0 PID: 6842 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.377098][ T6842] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.387205][ T6842] Call Trace: [ 61.390502][ T6842] dump_stack+0x188/0x20d [ 61.394829][ T6842] debug_smp_processor_id.cold+0x88/0x9b [ 61.400455][ T6842] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.405606][ T6842] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.411046][ T6842] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.417109][ T6842] ext4_ext_map_blocks+0x2044/0x3410 [ 61.422398][ T6842] ? ext4_ext_release+0x10/0x10 [ 61.427249][ T6842] ? __down_timeout+0x2d0/0x2d0 [ 61.432084][ T6842] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.437525][ T6842] ext4_map_blocks+0x4cb/0x1640 [ 61.442359][ T6842] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.447538][ T6842] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.453200][ T6842] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.461662][ T6842] ? prandom_u32_state+0xe/0x170 [ 61.466591][ T6842] ? __brelse+0x84/0xa0 [ 61.470726][ T6842] ? __ext4_new_inode+0x144/0x57c0 [ 61.476016][ T6842] ext4_getblk+0xad/0x520 [ 61.480346][ T6842] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.486264][ T6842] ? ext4_free_inode+0x17e0/0x17e0 [ 61.491689][ T6842] ext4_bread+0x7c/0x380 [ 61.495928][ T6842] ? ext4_getblk+0x520/0x520 [ 61.500523][ T6842] ? dqget+0xff0/0xff0 [ 61.504721][ T6842] ext4_append+0x153/0x360 [ 61.509136][ T6842] ext4_mkdir+0x5e0/0xdf0 [ 61.513448][ T6842] ? ext4_rmdir+0xde0/0xde0 [ 61.518132][ T6842] ? security_inode_permission+0xc4/0xf0 [ 61.523747][ T6842] vfs_mkdir+0x419/0x690 [ 61.527971][ T6842] do_mkdirat+0x21e/0x280 [ 61.532377][ T6842] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.537205][ T6842] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.543173][ T6842] ? do_syscall_64+0x21/0x7d0 [ 61.547827][ T6842] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.553786][ T6842] do_syscall_64+0xf6/0x7d0 [ 61.558281][ T6842] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.564180][ T6842] RIP: 0033:0x45bed7 [ 61.568062][ T6842] 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 [ 61.587653][ T6842] RSP: 002b:00007ffe365128e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 61.596579][ T6842] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 61.604613][ T6842] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffe36512ac0 [ 61.612660][ T6842] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002c80 [ 61.620619][ T6842] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.628571][ T6842] R13: 00007ffe36512ac0 R14: 8421084210842109 R15: 00007ffe36512acc [ 61.707257][ T6843] IPVS: ftp: loaded support on port[0] = 21 [ 61.744167][ T6843] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6843 [ 61.753653][ T6843] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.759737][ T6843] CPU: 1 PID: 6843 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.767976][ T6843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.778015][ T6843] Call Trace: [ 61.781294][ T6843] dump_stack+0x188/0x20d [ 61.785606][ T6843] debug_smp_processor_id.cold+0x88/0x9b [ 61.791214][ T6843] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.796308][ T6843] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.802385][ T6843] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.808083][ T6843] ext4_ext_map_blocks+0x2044/0x3410 [ 61.813379][ T6843] ? ext4_ext_release+0x10/0x10 [ 61.818239][ T6843] ? __down_timeout+0x2d0/0x2d0 [ 61.823068][ T6843] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.828515][ T6843] ext4_map_blocks+0x4cb/0x1640 [ 61.833693][ T6843] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.838869][ T6843] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.844403][ T6843] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.850383][ T6843] ? prandom_u32_state+0xe/0x170 [ 61.855316][ T6843] ? __brelse+0x84/0xa0 [ 61.859545][ T6843] ? __ext4_new_inode+0x144/0x57c0 [ 61.864805][ T6843] ext4_getblk+0xad/0x520 [ 61.869141][ T6843] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.875375][ T6843] ? ext4_free_inode+0x17e0/0x17e0 [ 61.880476][ T6843] ext4_bread+0x7c/0x380 [ 61.884712][ T6843] ? ext4_getblk+0x520/0x520 [ 61.889370][ T6843] ? dqget+0xff0/0xff0 [ 61.893605][ T6843] ext4_append+0x153/0x360 [ 61.898014][ T6843] ext4_mkdir+0x5e0/0xdf0 [ 61.902323][ T6843] ? ext4_rmdir+0xde0/0xde0 [ 61.906805][ T6843] ? security_inode_permission+0xc4/0xf0 [ 61.912426][ T6843] vfs_mkdir+0x419/0x690 [ 61.916842][ T6843] do_mkdirat+0x21e/0x280 [ 61.921160][ T6843] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.926015][ T6843] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.931994][ T6843] ? do_syscall_64+0x21/0x7d0 [ 61.936660][ T6843] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.942831][ T6843] do_syscall_64+0xf6/0x7d0 [ 61.947425][ T6843] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.953569][ T6843] RIP: 0033:0x45bed7 [ 61.957454][ T6843] 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 [ 61.977152][ T6843] RSP: 002b:00007ffe365127d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.985552][ T6843] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 61.993501][ T6843] RDX: 00007ffe36512823 RSI: 00000000000001ff RDI: 00007ffe36512820 [ 62.001449][ T6843] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 62.010458][ T6843] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185c0 [ 62.018512][ T6843] R13: 00007ffe36512810 R14: 0000000000000000 R15: 00007ffe36512820 [ 62.067568][ T6843] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6843 [ 62.077195][ T6843] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.083095][ T6843] CPU: 0 PID: 6843 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.091327][ T6843] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.101584][ T6843] Call Trace: [ 62.104883][ T6843] dump_stack+0x188/0x20d [ 62.109225][ T6843] debug_smp_processor_id.cold+0x88/0x9b [ 62.114897][ T6843] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.120201][ T6843] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.125753][ T6843] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.131787][ T6843] ext4_ext_map_blocks+0x2044/0x3410 [ 62.137068][ T6843] ? ext4_ext_release+0x10/0x10 [ 62.141914][ T6843] ? __down_timeout+0x2d0/0x2d0 [ 62.146747][ T6843] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.152195][ T6843] ext4_map_blocks+0x4cb/0x1640 [ 62.157303][ T6843] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.162481][ T6843] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.168035][ T6843] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.174006][ T6843] ? prandom_u32_state+0xe/0x170 [ 62.179465][ T6843] ? __brelse+0x84/0xa0 [ 62.183624][ T6843] ? __ext4_new_inode+0x144/0x57c0 [ 62.188998][ T6843] ext4_getblk+0xad/0x520 [ 62.193393][ T6843] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.199115][ T6843] ? ext4_free_inode+0x17e0/0x17e0 [ 62.204295][ T6843] ext4_bread+0x7c/0x380 [ 62.208541][ T6843] ? ext4_getblk+0x520/0x520 [ 62.213204][ T6843] ? dqget+0xff0/0xff0 [ 62.217284][ T6843] ext4_append+0x153/0x360 [ 62.221693][ T6843] ext4_mkdir+0x5e0/0xdf0 [ 62.226016][ T6843] ? ext4_rmdir+0xde0/0xde0 [ 62.230509][ T6843] ? security_inode_permission+0xc4/0xf0 [ 62.236125][ T6843] vfs_mkdir+0x419/0x690 [ 62.240364][ T6843] do_mkdirat+0x21e/0x280 [ 62.244718][ T6843] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.249554][ T6843] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.255528][ T6843] ? do_syscall_64+0x21/0x7d0 [ 62.260300][ T6843] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.266267][ T6843] do_syscall_64+0xf6/0x7d0 [ 62.270772][ T6843] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.276661][ T6843] RIP: 0033:0x45bed7 [ 62.280546][ T6843] 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 [ 62.300300][ T6843] RSP: 002b:00007ffe365127d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 62.308711][ T6843] RAX: ffffffffffffffda RBX: 000000000000f26a RCX: 000000000045bed7 2020/06/15 08:55:32 building call list... [ 62.316687][ T6843] RDX: 00007ffe36512823 RSI: 00000000000001ff RDI: 00007ffe36512820 [ 62.324637][ T6843] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 62.332614][ T6843] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 62.340762][ T6843] R13: 00007ffe36512810 R14: 000000000000f25f R15: 00007ffe36512820 [ 62.685289][ T444] tipc: TX() has been purged, node left! [ 62.871129][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 62.880379][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.886379][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.894439][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.904488][ T1156] Call Trace: [ 62.907786][ T1156] dump_stack+0x188/0x20d [ 62.912116][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 62.917800][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.922924][ T1156] ? __kmalloc+0x62f/0x7a0 [ 62.927524][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.932998][ T1156] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.939087][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 62.944384][ T1156] ? ext4_ext_release+0x10/0x10 [ 62.949422][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 62.954296][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.959848][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 62.964703][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.970037][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 62.975504][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.981046][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.987030][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.992506][ T1156] ext4_writepages+0x1ab7/0x3400 [ 62.997445][ T1156] ? mark_lock+0x30/0xdd0 [ 63.001808][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.007481][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.013205][ T1156] ? do_writepages+0xfa/0x2a0 [ 63.017961][ T1156] do_writepages+0xfa/0x2a0 [ 63.022466][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 63.028370][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 63.033399][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 63.038614][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 63.043472][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.049189][ T1156] ? collapse_file+0x3575/0x4300 [ 63.054162][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 63.060277][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.065484][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.071492][ T1156] collapse_file+0x357f/0x4300 [ 63.076282][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 63.081744][ T1156] ? khugepaged+0x24fa/0x3f80 [ 63.086436][ T1156] ? dccp_feat_parse_options+0x9a8/0x1a20 [ 63.092160][ T1156] khugepaged+0x3049/0x3f80 [ 63.096689][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.102323][ T1156] ? lock_downgrade+0x840/0x840 [ 63.107174][ T1156] ? finish_wait+0x260/0x260 [ 63.111766][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.117582][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.123563][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 63.128582][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.134299][ T1156] kthread+0x388/0x470 [ 63.138363][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.144190][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.149906][ T1156] ret_from_fork+0x24/0x30 [ 63.288254][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 63.297519][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.304173][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 63.312406][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.322441][ T1156] Call Trace: [ 63.325806][ T1156] dump_stack+0x188/0x20d [ 63.330137][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 63.336294][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.341405][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.346932][ T1156] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 63.353114][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 63.358481][ T1156] ? ext4_ext_release+0x10/0x10 [ 63.363338][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 63.368170][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.373612][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 63.378488][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.383679][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 63.389136][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.394693][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.400662][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 63.406104][ T1156] ext4_writepages+0x1ab7/0x3400 [ 63.411040][ T1156] ? mark_lock+0x30/0xdd0 [ 63.415564][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.421319][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.426982][ T1156] ? do_writepages+0xfa/0x2a0 [ 63.431660][ T1156] do_writepages+0xfa/0x2a0 [ 63.436164][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 63.441786][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 63.446805][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 63.451991][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 63.456842][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.463523][ T1156] ? collapse_file+0x3575/0x4300 [ 63.468483][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 63.474632][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.480172][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.486168][ T1156] collapse_file+0x357f/0x4300 [ 63.490923][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 63.496434][ T1156] ? khugepaged+0x24fa/0x3f80 [ 63.501120][ T1156] ? dccp_feat_parse_options+0x9a8/0x1a20 [ 63.506842][ T1156] khugepaged+0x3049/0x3f80 [ 63.511406][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.517158][ T1156] ? lock_downgrade+0x840/0x840 [ 63.522115][ T1156] ? finish_wait+0x260/0x260 [ 63.526836][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.532654][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.539097][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 63.544141][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.549759][ T1156] kthread+0x388/0x470 [ 63.553896][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.559754][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.565463][ T1156] ret_from_fork+0x24/0x30 [ 63.630654][ T1156] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1156 [ 63.639834][ T1156] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.645823][ T1156] CPU: 1 PID: 1156 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 63.653964][ T1156] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.664009][ T1156] Call Trace: [ 63.667299][ T1156] dump_stack+0x188/0x20d [ 63.671629][ T1156] debug_smp_processor_id.cold+0x88/0x9b [ 63.677257][ T1156] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.682372][ T1156] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.687955][ T1156] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 63.694109][ T1156] ext4_ext_map_blocks+0x2044/0x3410 [ 63.699750][ T1156] ? ext4_ext_release+0x10/0x10 [ 63.704708][ T1156] ? __down_timeout+0x2d0/0x2d0 [ 63.709644][ T1156] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.715105][ T1156] ext4_map_blocks+0x4cb/0x1640 [ 63.719956][ T1156] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.725150][ T1156] ? debug_smp_processor_id+0x2f/0x185 [ 63.730614][ T1156] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.736162][ T1156] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.742136][ T1156] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 63.747612][ T1156] ext4_writepages+0x1ab7/0x3400 [ 63.752568][ T1156] ? mark_lock+0x30/0xdd0 [ 63.756987][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.762663][ T1156] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.768321][ T1156] ? do_writepages+0xfa/0x2a0 [ 63.773267][ T1156] do_writepages+0xfa/0x2a0 [ 63.777804][ T1156] ? page_writeback_cpu_online+0x10/0x10 [ 63.783448][ T1156] ? do_raw_spin_lock+0x129/0x2e0 [ 63.788478][ T1156] ? do_raw_spin_unlock+0x171/0x260 [ 63.793780][ T1156] ? _raw_spin_unlock+0x24/0x40 [ 63.798643][ T1156] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.804375][ T1156] ? collapse_file+0x3575/0x4300 [ 63.809313][ T1156] ? delete_from_page_cache_batch+0xec0/0xec0 [ 63.815386][ T1156] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.820579][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.826580][ T1156] collapse_file+0x357f/0x4300 executing program [ 63.831359][ T1156] ? collapse_huge_page+0x4370/0x4370 [ 63.836735][ T1156] ? khugepaged+0x24fa/0x3f80 [ 63.841451][ T1156] ? dccp_feat_parse_options+0x9a8/0x1a20 [ 63.847174][ T1156] khugepaged+0x3049/0x3f80 [ 63.852077][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.857794][ T1156] ? lock_downgrade+0x840/0x840 [ 63.862660][ T1156] ? finish_wait+0x260/0x260 [ 63.867253][ T1156] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.873059][ T1156] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.879059][ T1156] ? __kthread_parkme+0x13f/0x1e0 [ 63.884114][ T1156] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.890341][ T1156] kthread+0x388/0x470 [ 63.894407][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.900118][ T1156] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.905842][ T1156] ret_from_fork+0x24/0x30 [ 64.562085][ T6871] can: request_module (can-proto-0) failed. [ 65.590876][ T6871] can: request_module (can-proto-0) failed. [ 65.603689][ T6871] can: request_module (can-proto-0) failed.