[ 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: [ 56.631072][ T26] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/26 [ 56.640110][ T26] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 56.646616][ T26] CPU: 1 PID: 26 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 56.654515][ T26] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.664570][ T26] Workqueue: writeback wb_workfn (flush-8:0) [ 56.670546][ T26] Call Trace: [ 56.673829][ T26] dump_stack+0x188/0x20d [ 56.678268][ T26] debug_smp_processor_id.cold+0x88/0x9b [ 56.683879][ T26] ext4_mb_new_blocks+0xa77/0x3b30 [ 56.688966][ T26] ? __kmalloc+0x62f/0x7a0 [ 56.693370][ T26] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.698807][ T26] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.704523][ T26] ext4_ext_map_blocks+0x2044/0x3410 [ 56.709808][ T26] ? ext4_ext_release+0x10/0x10 [ 56.714651][ T26] ? __down_timeout+0x2d0/0x2d0 [ 56.719483][ T26] ? ext4_es_lookup_extent+0x41d/0xd30 [ 56.724936][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 56.730378][ T26] ext4_map_blocks+0x4cb/0x1640 [ 56.735214][ T26] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.740388][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 56.745830][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.751374][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.757510][ T26] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.762980][ T26] ext4_writepages+0x1ab7/0x3400 [ 56.767933][ T26] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.773581][ T26] ? __lock_acquire+0x2224/0x48a0 [ 56.778592][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.784558][ T26] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.790519][ T26] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.796148][ T26] ? do_writepages+0xfa/0x2a0 [ 56.800801][ T26] do_writepages+0xfa/0x2a0 [ 56.805286][ T26] ? page_writeback_cpu_online+0x10/0x10 [ 56.810896][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 56.816336][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.821860][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.827819][ T26] ? lock_downgrade+0x840/0x840 [ 56.832653][ T26] __writeback_single_inode+0x12a/0x1410 [ 56.838365][ T26] ? _raw_spin_unlock+0x24/0x40 [ 56.843205][ T26] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.849166][ T26] writeback_sb_inodes+0x515/0xdd0 [ 56.854341][ T26] ? __writeback_single_inode+0x1410/0x1410 [ 56.860288][ T26] __writeback_inodes_wb+0xc3/0x250 [ 56.865474][ T26] wb_writeback+0x910/0xd90 [ 56.869961][ T26] ? print_usage_bug+0x240/0x240 [ 56.874882][ T26] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.881209][ T26] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.887083][ T26] ? cpumask_next+0x3c/0x40 [ 56.891568][ T26] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.896751][ T26] wb_workfn+0xadf/0x10d0 [ 56.901074][ T26] ? inode_wait_for_writeback+0x30/0x30 [ 56.906600][ T26] ? debug_smp_processor_id+0x2f/0x185 [ 56.912170][ T26] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.917856][ T26] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.923857][ T26] process_one_work+0x965/0x16a0 [ 56.928783][ T26] ? lock_release+0x800/0x800 [ 56.933445][ T26] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.938798][ T26] ? rwlock_bug.part.0+0x90/0x90 [ 56.943720][ T26] worker_thread+0x96/0xe10 [ 56.948222][ T26] ? process_one_work+0x16a0/0x16a0 [ 56.953423][ T26] kthread+0x388/0x470 [ 56.957467][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.963165][ T26] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.968870][ T26] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.1.36' (ECDSA) to the list of known hosts. 2020/06/12 15:37:11 fuzzer started 2020/06/12 15:37:12 connecting to host at 10.128.0.26:36089 2020/06/12 15:37:12 checking machine... 2020/06/12 15:37:12 checking revisions... 2020/06/12 15:37:12 testing simple program... [ 62.113107][ T6851] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6851 [ 62.122230][ T6851] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.128117][ T6851] CPU: 1 PID: 6851 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 62.135993][ T6851] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.146025][ T6851] Call Trace: [ 62.149304][ T6851] dump_stack+0x188/0x20d [ 62.153617][ T6851] debug_smp_processor_id.cold+0x88/0x9b [ 62.159228][ T6851] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.164327][ T6851] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.169764][ T6851] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.175466][ T6851] ext4_ext_map_blocks+0x2044/0x3410 [ 62.180749][ T6851] ? ext4_ext_release+0x10/0x10 [ 62.185596][ T6851] ? __down_timeout+0x2d0/0x2d0 [ 62.190442][ T6851] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.195898][ T6851] ext4_map_blocks+0x4cb/0x1640 [ 62.200731][ T6851] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.205907][ T6851] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.211432][ T6851] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.217409][ T6851] ? prandom_u32_state+0xe/0x170 [ 62.222330][ T6851] ? __brelse+0x84/0xa0 [ 62.226527][ T6851] ? __ext4_new_inode+0x144/0x57c0 [ 62.231718][ T6851] ext4_getblk+0xad/0x520 [ 62.236037][ T6851] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.241746][ T6851] ? ext4_free_inode+0x17e0/0x17e0 [ 62.246861][ T6851] ext4_bread+0x7c/0x380 [ 62.251089][ T6851] ? ext4_getblk+0x520/0x520 [ 62.255656][ T6851] ? dqget+0xff0/0xff0 [ 62.259711][ T6851] ext4_append+0x153/0x360 [ 62.264112][ T6851] ext4_mkdir+0x5e0/0xdf0 [ 62.268424][ T6851] ? ext4_rmdir+0xde0/0xde0 [ 62.272932][ T6851] ? security_inode_permission+0xc4/0xf0 [ 62.279773][ T6851] vfs_mkdir+0x419/0x690 [ 62.284015][ T6851] do_mkdirat+0x21e/0x280 [ 62.288348][ T6851] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.293199][ T6851] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.299177][ T6851] ? do_syscall_64+0x21/0x7d0 [ 62.303865][ T6851] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.309974][ T6851] do_syscall_64+0xf6/0x7d0 [ 62.314468][ T6851] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.320342][ T6851] RIP: 0033:0x4b02a0 [ 62.324219][ T6851] 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 [ 62.343841][ T6851] RSP: 002b:000000c0000e94b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 62.352238][ T6851] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 62.360189][ T6851] RDX: 00000000000001c0 RSI: 000000c0000eed80 RDI: ffffffffffffff9c [ 62.368138][ T6851] RBP: 000000c0000e9510 R08: 0000000000000000 R09: 0000000000000000 [ 62.376177][ T6851] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 62.384129][ T6851] R13: 000000000000006d R14: 000000000000006c R15: 0000000000000100 [ 62.411067][ T6860] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6860 [ 62.421244][ T6860] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.427152][ T6860] CPU: 1 PID: 6860 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.435368][ T6860] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.445403][ T6860] Call Trace: [ 62.448702][ T6860] dump_stack+0x188/0x20d [ 62.453014][ T6860] debug_smp_processor_id.cold+0x88/0x9b [ 62.458625][ T6860] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.463724][ T6860] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.469163][ T6860] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.474883][ T6860] ext4_ext_map_blocks+0x2044/0x3410 [ 62.480154][ T6860] ? ext4_ext_release+0x10/0x10 [ 62.484996][ T6860] ? __down_timeout+0x2d0/0x2d0 [ 62.489828][ T6860] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.495270][ T6860] ext4_map_blocks+0x4cb/0x1640 [ 62.500105][ T6860] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.505283][ T6860] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.510809][ T6860] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.516768][ T6860] ? prandom_u32_state+0xe/0x170 [ 62.522321][ T6860] ? __brelse+0x84/0xa0 [ 62.526457][ T6860] ? __ext4_new_inode+0x144/0x57c0 [ 62.531548][ T6860] ext4_getblk+0xad/0x520 [ 62.535877][ T6860] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.541597][ T6860] ? ext4_free_inode+0x17e0/0x17e0 [ 62.546688][ T6860] ext4_bread+0x7c/0x380 [ 62.550910][ T6860] ? ext4_getblk+0x520/0x520 [ 62.555478][ T6860] ? dqget+0xff0/0xff0 [ 62.559528][ T6860] ext4_append+0x153/0x360 [ 62.563928][ T6860] ext4_mkdir+0x5e0/0xdf0 [ 62.568247][ T6860] ? ext4_rmdir+0xde0/0xde0 [ 62.572736][ T6860] ? security_inode_permission+0xc4/0xf0 [ 62.578354][ T6860] vfs_mkdir+0x419/0x690 [ 62.582579][ T6860] do_mkdirat+0x21e/0x280 [ 62.586892][ T6860] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.591729][ T6860] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.597690][ T6860] ? do_syscall_64+0x21/0x7d0 [ 62.602349][ T6860] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.608312][ T6860] do_syscall_64+0xf6/0x7d0 [ 62.612801][ T6860] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.619193][ T6860] RIP: 0033:0x45bee7 [ 62.623069][ T6860] 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 [ 62.642673][ T6860] RSP: 002b:00007ffca3c92ce8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 62.651084][ T6860] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 62.659075][ T6860] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffca3c92ec0 [ 62.667133][ T6860] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003440 [ 62.675085][ T6860] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 62.683042][ T6860] R13: 00007ffca3c92ec0 R14: 8421084210842109 R15: 00007ffca3c92ecc [ 62.766789][ T6861] IPVS: ftp: loaded support on port[0] = 21 [ 62.804033][ T6861] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6861 [ 62.813693][ T6861] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.820101][ T6861] CPU: 0 PID: 6861 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.828361][ T6861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.838496][ T6861] Call Trace: [ 62.841770][ T6861] dump_stack+0x188/0x20d [ 62.846082][ T6861] debug_smp_processor_id.cold+0x88/0x9b [ 62.851696][ T6861] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.856823][ T6861] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.862272][ T6861] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.867978][ T6861] ext4_ext_map_blocks+0x2044/0x3410 [ 62.873309][ T6861] ? ext4_ext_release+0x10/0x10 [ 62.878298][ T6861] ? __down_timeout+0x2d0/0x2d0 [ 62.883245][ T6861] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.888700][ T6861] ext4_map_blocks+0x4cb/0x1640 [ 62.893540][ T6861] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.898724][ T6861] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.904251][ T6861] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.910211][ T6861] ? prandom_u32_state+0xe/0x170 [ 62.915129][ T6861] ? __brelse+0x84/0xa0 [ 62.919265][ T6861] ? __ext4_new_inode+0x144/0x57c0 [ 62.924359][ T6861] ext4_getblk+0xad/0x520 [ 62.928671][ T6861] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.934429][ T6861] ? ext4_free_inode+0x17e0/0x17e0 [ 62.939573][ T6861] ext4_bread+0x7c/0x380 [ 62.943852][ T6861] ? ext4_getblk+0x520/0x520 [ 62.948449][ T6861] ? dqget+0xff0/0xff0 [ 62.952502][ T6861] ext4_append+0x153/0x360 [ 62.956901][ T6861] ext4_mkdir+0x5e0/0xdf0 [ 62.961215][ T6861] ? ext4_rmdir+0xde0/0xde0 [ 62.965703][ T6861] ? security_inode_permission+0xc4/0xf0 [ 62.971338][ T6861] vfs_mkdir+0x419/0x690 [ 62.975573][ T6861] do_mkdirat+0x21e/0x280 [ 62.979889][ T6861] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.984719][ T6861] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.990809][ T6861] ? do_syscall_64+0x21/0x7d0 [ 62.995473][ T6861] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.001434][ T6861] do_syscall_64+0xf6/0x7d0 [ 63.005923][ T6861] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.011793][ T6861] RIP: 0033:0x45bee7 [ 63.015667][ T6861] 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 [ 63.035249][ T6861] RSP: 002b:00007ffca3c92bd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 63.043640][ T6861] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 63.051609][ T6861] RDX: 00007ffca3c92c23 RSI: 00000000000001ff RDI: 00007ffca3c92c20 [ 63.059665][ T6861] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 63.067619][ T6861] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 63.075570][ T6861] R13: 00007ffca3c92c10 R14: 0000000000000000 R15: 00007ffca3c92c20 [ 63.094353][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 63.103909][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.109966][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 63.117860][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.127920][ T1154] Call Trace: [ 63.131225][ T1154] dump_stack+0x188/0x20d [ 63.135570][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 63.141215][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.146344][ T1154] ? __kmalloc+0x62f/0x7a0 [ 63.150786][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.156261][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.161998][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 63.167302][ T1154] ? ext4_ext_release+0x10/0x10 [ 63.172201][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 63.177064][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.182549][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 63.187425][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.192631][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 63.198108][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.203669][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.209762][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 63.215210][ T1154] ext4_writepages+0x1ab7/0x3400 [ 63.220162][ T1154] ? mark_lock+0x30/0xdd0 [ 63.224495][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.230152][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.235792][ T1154] ? do_writepages+0xfa/0x2a0 [ 63.240488][ T1154] do_writepages+0xfa/0x2a0 [ 63.245012][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 63.246106][ T6861] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6861 [ 63.250650][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 63.250690][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 63.250705][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 63.250724][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.260158][ T6861] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.265088][ T1154] ? collapse_file+0x3575/0x4300 [ 63.291557][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 63.297640][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.302825][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.308819][ T1154] collapse_file+0x357f/0x4300 [ 63.313580][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 63.318937][ T1154] ? khugepaged+0x24fa/0x3f80 [ 63.323608][ T1154] ? __irqentry_text_end+0x1b20b2/0x1fa5ca [ 63.329415][ T1154] khugepaged+0x3049/0x3f80 [ 63.333923][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.339558][ T1154] ? lock_downgrade+0x840/0x840 [ 63.344394][ T1154] ? finish_wait+0x260/0x260 [ 63.348973][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.354762][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.360819][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 63.365829][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.371446][ T1154] kthread+0x388/0x470 [ 63.375585][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.381286][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.387012][ T1154] ret_from_fork+0x24/0x30 [ 63.391428][ T6861] CPU: 0 PID: 6861 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 63.399674][ T6861] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.409765][ T6861] Call Trace: [ 63.413061][ T6861] dump_stack+0x188/0x20d [ 63.417401][ T6861] debug_smp_processor_id.cold+0x88/0x9b [ 63.423041][ T6861] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.428157][ T6861] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.433626][ T6861] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 63.439358][ T6861] ext4_ext_map_blocks+0x2044/0x3410 [ 63.444650][ T6861] ? ext4_ext_release+0x10/0x10 [ 63.449525][ T6861] ? __down_timeout+0x2d0/0x2d0 [ 63.454393][ T6861] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.459943][ T6861] ext4_map_blocks+0x4cb/0x1640 [ 63.464789][ T6861] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.469997][ T6861] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.475670][ T6861] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.481654][ T6861] ? prandom_u32_state+0xe/0x170 [ 63.486713][ T6861] ? __brelse+0x84/0xa0 [ 63.490876][ T6861] ? __ext4_new_inode+0x144/0x57c0 [ 63.492639][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 63.496114][ T6861] ext4_getblk+0xad/0x520 [ 63.496137][ T6861] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 63.496156][ T6861] ? ext4_free_inode+0x17e0/0x17e0 [ 63.496173][ T6861] ext4_bread+0x7c/0x380 [ 63.496186][ T6861] ? ext4_getblk+0x520/0x520 [ 63.496200][ T6861] ? dqget+0xff0/0xff0 [ 63.496223][ T6861] ext4_append+0x153/0x360 [ 63.496243][ T6861] ext4_mkdir+0x5e0/0xdf0 [ 63.496266][ T6861] ? ext4_rmdir+0xde0/0xde0 [ 63.496287][ T6861] ? security_inode_permission+0xc4/0xf0 [ 63.496307][ T6861] vfs_mkdir+0x419/0x690 [ 63.496326][ T6861] do_mkdirat+0x21e/0x280 [ 63.505505][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 63.509664][ T6861] ? __ia32_sys_mknod+0xb0/0xb0 [ 63.509679][ T6861] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.509695][ T6861] ? do_syscall_64+0x21/0x7d0 [ 63.509709][ T6861] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.509727][ T6861] do_syscall_64+0xf6/0x7d0 [ 63.509748][ T6861] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 63.598266][ T6861] RIP: 0033:0x45bee7 [ 63.602148][ T6861] 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 [ 63.621752][ T6861] RSP: 002b:00007ffca3c92bd8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 63.630148][ T6861] RAX: ffffffffffffffda RBX: 000000000000f705 RCX: 000000000045bee7 [ 63.638105][ T6861] RDX: 00007ffca3c92c23 RSI: 00000000000001ff RDI: 00007ffca3c92c20 [ 63.646168][ T6861] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 63.654140][ T6861] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 63.662099][ T6861] R13: 00007ffca3c92c10 R14: 000000000000f686 R15: 00007ffca3c92c20 [ 63.670186][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 63.678086][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.688151][ T1154] Call Trace: [ 63.691451][ T1154] dump_stack+0x188/0x20d [ 63.695799][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 63.701441][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 63.706587][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.712074][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 63.718496][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 63.723774][ T1154] ? ext4_ext_release+0x10/0x10 [ 63.728707][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 63.733543][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 63.738993][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 63.743835][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.749016][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 63.754468][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.759998][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.765983][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 63.771454][ T1154] ext4_writepages+0x1ab7/0x3400 [ 63.776380][ T1154] ? mark_lock+0x30/0xdd0 [ 63.780847][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.786498][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 63.792205][ T1154] ? do_writepages+0xfa/0x2a0 [ 63.796867][ T1154] do_writepages+0xfa/0x2a0 [ 63.801365][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 63.806987][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 63.811998][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 63.817182][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 63.822022][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.827730][ T1154] ? collapse_file+0x3575/0x4300 [ 63.832653][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 63.838709][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.843913][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.849883][ T1154] collapse_file+0x357f/0x4300 [ 63.854673][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 63.860061][ T1154] ? khugepaged+0x24fa/0x3f80 [ 63.864733][ T1154] ? __irqentry_text_end+0x1b20b2/0x1fa5ca [ 63.870532][ T1154] khugepaged+0x3049/0x3f80 [ 63.875047][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.880779][ T1154] ? lock_downgrade+0x840/0x840 [ 63.885634][ T1154] ? finish_wait+0x260/0x260 [ 63.890220][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.896011][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.901987][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 63.907000][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.912623][ T1154] kthread+0x388/0x470 [ 63.916679][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 2020/06/12 15:37:14 building call list... [ 63.922386][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.928098][ T1154] ret_from_fork+0x24/0x30 [ 64.003941][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 64.013313][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 64.019321][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 64.027221][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.037287][ T1154] Call Trace: [ 64.040590][ T1154] dump_stack+0x188/0x20d [ 64.044931][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 64.050577][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 64.055711][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 64.061187][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 64.067347][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 64.072691][ T1154] ? ext4_ext_release+0x10/0x10 [ 64.077658][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 64.082512][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 64.087984][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 64.092842][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 64.098062][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 64.103538][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 64.109088][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.115066][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 64.120529][ T1154] ext4_writepages+0x1ab7/0x3400 [ 64.125475][ T1154] ? mark_lock+0x30/0xdd0 [ 64.129819][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 64.135499][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 64.141137][ T1154] ? do_writepages+0xfa/0x2a0 [ 64.145841][ T1154] do_writepages+0xfa/0x2a0 [ 64.150352][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 64.155990][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 64.161013][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 64.166212][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 64.171066][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 64.176783][ T1154] ? collapse_file+0x3575/0x4300 [ 64.181732][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 64.187825][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 64.193038][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.199038][ T1154] collapse_file+0x357f/0x4300 [ 64.203996][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 64.209367][ T1154] ? khugepaged+0x24fa/0x3f80 [ 64.214094][ T1154] ? __irqentry_text_end+0x1b20b2/0x1fa5ca [ 64.219903][ T1154] khugepaged+0x3049/0x3f80 [ 64.224437][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.230070][ T1154] ? lock_downgrade+0x840/0x840 [ 64.234942][ T1154] ? finish_wait+0x260/0x260 [ 64.239535][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 64.245338][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 64.251322][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 64.256373][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 64.262018][ T1154] kthread+0x388/0x470 [ 64.266087][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.271803][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.277528][ T1154] ret_from_fork+0x24/0x30 [ 64.498298][ T26] tipc: TX() has been purged, node left! executing program [ 65.746807][ T6845] can: request_module (can-proto-0) failed. [ 66.462943][ T6845] can: request_module (can-proto-0) failed. [ 66.475100][ T6845] can: request_module (can-proto-0) failed.