Starting Update UTMP about System Runlevel Changes... [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 57.094036][ T3511] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:5/3511 [ 57.103334][ T3511] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.109726][ T3511] CPU: 0 PID: 3511 Comm: kworker/u4:5 Not tainted 5.7.0-syzkaller #0 [ 57.117804][ T3511] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.127853][ T3511] Workqueue: writeback wb_workfn (flush-8:0) [ 57.133810][ T3511] Call Trace: [ 57.137108][ T3511] dump_stack+0x188/0x20d [ 57.141439][ T3511] debug_smp_processor_id.cold+0x88/0x9b [ 57.147054][ T3511] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.152165][ T3511] ? __kmalloc+0x62f/0x7a0 [ 57.156623][ T3511] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.162066][ T3511] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.167847][ T3511] ext4_ext_map_blocks+0x2044/0x3410 [ 57.173299][ T3511] ? ext4_ext_release+0x10/0x10 [ 57.178139][ T3511] ? __down_timeout+0x2d0/0x2d0 [ 57.182976][ T3511] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.188440][ T3511] ? debug_smp_processor_id+0x2f/0x185 [ 57.193951][ T3511] ext4_map_blocks+0x4cb/0x1640 [ 57.198808][ T3511] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.204216][ T3511] ? debug_smp_processor_id+0x2f/0x185 [ 57.209667][ T3511] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.215461][ T3511] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.221449][ T3511] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.226901][ T3511] ext4_writepages+0x1ab7/0x3400 [ 57.231833][ T3511] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.237444][ T3511] ? __lock_acquire+0x2224/0x48a0 [ 57.242474][ T3511] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.248436][ T3511] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.254397][ T3511] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.260025][ T3511] ? do_writepages+0xfa/0x2a0 [ 57.264704][ T3511] do_writepages+0xfa/0x2a0 [ 57.269212][ T3511] ? page_writeback_cpu_online+0x10/0x10 [ 57.274832][ T3511] ? debug_smp_processor_id+0x2f/0x185 [ 57.280280][ T3511] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.288252][ T3511] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.294245][ T3511] ? lock_downgrade+0x840/0x840 [ 57.299098][ T3511] __writeback_single_inode+0x12a/0x1410 [ 57.304745][ T3511] ? _raw_spin_unlock+0x24/0x40 [ 57.309591][ T3511] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.315562][ T3511] writeback_sb_inodes+0x515/0xdd0 [ 57.320658][ T3511] ? __writeback_single_inode+0x1410/0x1410 [ 57.328898][ T3511] __writeback_inodes_wb+0xc3/0x250 [ 57.334189][ T3511] wb_writeback+0x910/0xd90 [ 57.338674][ T3511] ? print_usage_bug+0x240/0x240 [ 57.344056][ T3511] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.350359][ T3511] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.356235][ T3511] ? cpumask_next+0x3c/0x40 [ 57.360716][ T3511] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.365893][ T3511] wb_workfn+0xadf/0x10d0 [ 57.370212][ T3511] ? inode_wait_for_writeback+0x30/0x30 [ 57.375835][ T3511] ? debug_smp_processor_id+0x2f/0x185 [ 57.381275][ T3511] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.386812][ T3511] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.392776][ T3511] process_one_work+0x965/0x16a0 [ 57.397959][ T3511] ? lock_release+0x800/0x800 [ 57.402627][ T3511] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.407980][ T3511] ? rwlock_bug.part.0+0x90/0x90 [ 57.412923][ T3511] worker_thread+0x96/0xe10 [ 57.417440][ T3511] ? process_one_work+0x16a0/0x16a0 [ 57.422626][ T3511] kthread+0x388/0x470 [ 57.426879][ T3511] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.432632][ T3511] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.438352][ T3511] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.10.8' (ECDSA) to the list of known hosts. 2020/06/14 10:21:20 fuzzer started 2020/06/14 10:21:21 connecting to host at 10.128.0.26:44577 2020/06/14 10:21:21 checking machine... 2020/06/14 10:21:21 checking revisions... 2020/06/14 10:21:21 testing simple program... [ 58.300879][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6801 [ 58.310100][ T6801] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.316658][ T6801] CPU: 1 PID: 6801 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.324963][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.335005][ T6801] Call Trace: [ 58.338295][ T6801] dump_stack+0x188/0x20d [ 58.342635][ T6801] debug_smp_processor_id.cold+0x88/0x9b [ 58.348250][ T6801] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.353371][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.359372][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.365532][ T6801] ext4_ext_map_blocks+0x2044/0x3410 [ 58.370898][ T6801] ? ext4_ext_release+0x10/0x10 [ 58.375742][ T6801] ? __down_timeout+0x2d0/0x2d0 [ 58.380589][ T6801] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.386132][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 58.391231][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.398611][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.404166][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.410138][ T6801] ? prandom_u32_state+0xe/0x170 [ 58.415066][ T6801] ? __brelse+0x84/0xa0 [ 58.419206][ T6801] ? __ext4_new_inode+0x144/0x57c0 [ 58.424348][ T6801] ext4_getblk+0xad/0x520 [ 58.428747][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.434474][ T6801] ? ext4_free_inode+0x17e0/0x17e0 [ 58.439596][ T6801] ext4_bread+0x7c/0x380 [ 58.444870][ T6801] ? ext4_getblk+0x520/0x520 [ 58.449559][ T6801] ? dqget+0xff0/0xff0 [ 58.453642][ T6801] ext4_append+0x153/0x360 [ 58.466006][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 58.470423][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 58.474937][ T6801] ? security_inode_permission+0xc4/0xf0 [ 58.480609][ T6801] vfs_mkdir+0x419/0x690 [ 58.484840][ T6801] do_mkdirat+0x21e/0x280 [ 58.489428][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.494267][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.500942][ T6801] ? do_syscall_64+0x21/0x7d0 [ 58.505601][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.511594][ T6801] do_syscall_64+0xf6/0x7d0 [ 58.516099][ T6801] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.522001][ T6801] RIP: 0033:0x4b02a0 [ 58.525893][ T6801] 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 [ 58.545808][ T6801] RSP: 002b:000000c0000cd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.554220][ T6801] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 58.562190][ T6801] RDX: 00000000000001c0 RSI: 000000c0000d6a60 RDI: ffffffffffffff9c [ 58.570151][ T6801] RBP: 000000c0000cd510 R08: 0000000000000000 R09: 0000000000000000 [ 58.578107][ T6801] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.586079][ T6801] R13: 0000000000000054 R14: 0000000000000053 R15: 0000000000000100 [ 58.610813][ T6805] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6805 [ 58.620325][ T6805] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.626389][ T6805] CPU: 0 PID: 6805 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.634641][ T6805] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.644697][ T6805] Call Trace: [ 58.647975][ T6805] dump_stack+0x188/0x20d [ 58.652392][ T6805] debug_smp_processor_id.cold+0x88/0x9b [ 58.658025][ T6805] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.663261][ T6805] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.668743][ T6805] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.674454][ T6805] ext4_ext_map_blocks+0x2044/0x3410 [ 58.680498][ T6805] ? ext4_ext_release+0x10/0x10 [ 58.685365][ T6805] ? __down_timeout+0x2d0/0x2d0 [ 58.690205][ T6805] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.695863][ T6805] ext4_map_blocks+0x4cb/0x1640 [ 58.700710][ T6805] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.705916][ T6805] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.711465][ T6805] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.717426][ T6805] ? prandom_u32_state+0xe/0x170 [ 58.722345][ T6805] ? __brelse+0x84/0xa0 [ 58.726763][ T6805] ? __ext4_new_inode+0x144/0x57c0 [ 58.731961][ T6805] ext4_getblk+0xad/0x520 [ 58.736395][ T6805] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.742115][ T6805] ? ext4_free_inode+0x17e0/0x17e0 [ 58.747349][ T6805] ext4_bread+0x7c/0x380 [ 58.751600][ T6805] ? ext4_getblk+0x520/0x520 [ 58.756499][ T6805] ? dqget+0xff0/0xff0 [ 58.761368][ T6805] ext4_append+0x153/0x360 [ 58.765775][ T6805] ext4_mkdir+0x5e0/0xdf0 [ 58.770099][ T6805] ? ext4_rmdir+0xde0/0xde0 [ 58.774719][ T6805] ? security_inode_permission+0xc4/0xf0 [ 58.780378][ T6805] vfs_mkdir+0x419/0x690 [ 58.784727][ T6805] do_mkdirat+0x21e/0x280 [ 58.789056][ T6805] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.793891][ T6805] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.799943][ T6805] ? do_syscall_64+0x21/0x7d0 [ 58.804617][ T6805] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.810657][ T6805] do_syscall_64+0xf6/0x7d0 [ 58.815173][ T6805] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.821063][ T6805] RIP: 0033:0x45bee7 [ 58.824937][ T6805] 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 [ 58.844986][ T6805] RSP: 002b:00007ffc9a809918 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.853415][ T6805] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.861382][ T6805] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc9a809af0 [ 58.869360][ T6805] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000030c0 [ 58.877355][ T6805] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.885544][ T6805] R13: 00007ffc9a809af0 R14: 8421084210842109 R15: 00007ffc9a809afc [ 58.968730][ T6806] IPVS: ftp: loaded support on port[0] = 21 [ 59.007877][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 59.017644][ T6806] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.023627][ T6806] CPU: 1 PID: 6806 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.031879][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.041951][ T6806] Call Trace: [ 59.045237][ T6806] dump_stack+0x188/0x20d [ 59.049574][ T6806] debug_smp_processor_id.cold+0x88/0x9b [ 59.055206][ T6806] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.060319][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.068036][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.073761][ T6806] ext4_ext_map_blocks+0x2044/0x3410 [ 59.080362][ T6806] ? ext4_ext_release+0x10/0x10 [ 59.085301][ T6806] ? __down_timeout+0x2d0/0x2d0 [ 59.090149][ T6806] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.095597][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 59.100451][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.105646][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.111280][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.117256][ T6806] ? prandom_u32_state+0xe/0x170 [ 59.122616][ T6806] ? __brelse+0x84/0xa0 [ 59.126857][ T6806] ? __ext4_new_inode+0x144/0x57c0 [ 59.132663][ T6806] ext4_getblk+0xad/0x520 [ 59.136974][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.142673][ T6806] ? ext4_free_inode+0x17e0/0x17e0 [ 59.147775][ T6806] ext4_bread+0x7c/0x380 [ 59.152021][ T6806] ? ext4_getblk+0x520/0x520 [ 59.156602][ T6806] ? dqget+0xff0/0xff0 [ 59.160659][ T6806] ext4_append+0x153/0x360 [ 59.165160][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 59.169484][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 59.173972][ T6806] ? security_inode_permission+0xc4/0xf0 [ 59.179606][ T6806] vfs_mkdir+0x419/0x690 [ 59.183843][ T6806] do_mkdirat+0x21e/0x280 [ 59.188163][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.193083][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.199195][ T6806] ? do_syscall_64+0x21/0x7d0 [ 59.203863][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.209830][ T6806] do_syscall_64+0xf6/0x7d0 [ 59.214318][ T6806] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.220276][ T6806] RIP: 0033:0x45bee7 [ 59.224160][ T6806] 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 [ 59.243742][ T6806] RSP: 002b:00007ffc9a809808 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.252229][ T6806] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 59.260190][ T6806] RDX: 00007ffc9a809853 RSI: 00000000000001ff RDI: 00007ffc9a809850 [ 59.268160][ T6806] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.276291][ T6806] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 59.284338][ T6806] R13: 00007ffc9a809840 R14: 0000000000000000 R15: 00007ffc9a809850 [ 59.334286][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 59.344880][ T6806] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.350783][ T6806] CPU: 0 PID: 6806 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.359038][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.369177][ T6806] Call Trace: [ 59.372482][ T6806] dump_stack+0x188/0x20d [ 59.376823][ T6806] debug_smp_processor_id.cold+0x88/0x9b [ 59.382464][ T6806] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.388033][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.393483][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.399196][ T6806] ext4_ext_map_blocks+0x2044/0x3410 [ 59.404463][ T6806] ? ext4_ext_release+0x10/0x10 [ 59.409316][ T6806] ? __down_timeout+0x2d0/0x2d0 [ 59.414143][ T6806] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.419593][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 59.424428][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.429621][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.435143][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.441107][ T6806] ? prandom_u32_state+0xe/0x170 [ 59.446215][ T6806] ? __brelse+0x84/0xa0 [ 59.450389][ T6806] ? __ext4_new_inode+0x144/0x57c0 [ 59.455561][ T6806] ext4_getblk+0xad/0x520 [ 59.459919][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.465621][ T6806] ? ext4_free_inode+0x17e0/0x17e0 [ 59.470710][ T6806] ext4_bread+0x7c/0x380 [ 59.474985][ T6806] ? ext4_getblk+0x520/0x520 [ 59.479588][ T6806] ? dqget+0xff0/0xff0 [ 59.483648][ T6806] ext4_append+0x153/0x360 [ 59.488043][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 59.492361][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 59.496858][ T6806] ? security_inode_permission+0xc4/0xf0 [ 59.502542][ T6806] vfs_mkdir+0x419/0x690 [ 59.506798][ T6806] do_mkdirat+0x21e/0x280 [ 59.511115][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.516033][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.521994][ T6806] ? do_syscall_64+0x21/0x7d0 [ 59.526648][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.532620][ T6806] do_syscall_64+0xf6/0x7d0 [ 59.537114][ T6806] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.542980][ T6806] RIP: 0033:0x45bee7 [ 59.546856][ T6806] 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 [ 59.566524][ T6806] RSP: 002b:00007ffc9a809808 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.574926][ T6806] RAX: ffffffffffffffda RBX: 000000000000e7c4 RCX: 000000000045bee7 2020/06/14 10:21:22 building call list... [ 59.582880][ T6806] RDX: 00007ffc9a809853 RSI: 00000000000001ff RDI: 00007ffc9a809850 [ 59.590826][ T6806] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.598784][ T6806] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 59.606734][ T6806] R13: 00007ffc9a809840 R14: 000000000000e7ba R15: 00007ffc9a809850 [ 59.913156][ T3511] tipc: TX() has been purged, node left! executing program [ 61.188853][ T6791] can: request_module (can-proto-0) failed. [ 61.877344][ T6791] can: request_module (can-proto-0) failed. [ 61.888802][ T6791] can: request_module (can-proto-0) failed. [ 62.295965][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 62.305266][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.311160][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.319035][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.329077][ T1154] Call Trace: [ 62.332363][ T1154] dump_stack+0x188/0x20d [ 62.336685][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 62.342509][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.347628][ T1154] ? __kmalloc+0x62f/0x7a0 [ 62.352221][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.357679][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.363515][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 62.368797][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.373640][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 62.378482][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.387231][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.392069][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.397255][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 62.402792][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.408334][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.414305][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.419751][ T1154] ext4_writepages+0x1ab7/0x3400 [ 62.424686][ T1154] ? mark_lock+0x30/0xdd0 [ 62.429034][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.434667][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.440281][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.444936][ T1154] do_writepages+0xfa/0x2a0 [ 62.449421][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.455043][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 62.460046][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.467391][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.472239][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.477945][ T1154] ? collapse_file+0x3575/0x4300 [ 62.482869][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.488915][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.494231][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.500203][ T1154] collapse_file+0x357f/0x4300 [ 62.504961][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 62.510310][ T1154] ? khugepaged+0x24fa/0x3f80 [ 62.514990][ T1154] khugepaged+0x3049/0x3f80 [ 62.519493][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.525116][ T1154] ? lock_downgrade+0x840/0x840 [ 62.529943][ T1154] ? finish_wait+0x260/0x260 [ 62.534536][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.540405][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.546650][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.552423][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.558307][ T1154] kthread+0x388/0x470 [ 62.562360][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.568056][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.573928][ T1154] ret_from_fork+0x24/0x30 [ 62.638570][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 62.647745][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.653763][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.661646][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.671696][ T1154] Call Trace: [ 62.675007][ T1154] dump_stack+0x188/0x20d [ 62.679333][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 62.684954][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.690060][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.695506][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.701724][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 62.707079][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.711936][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 62.716777][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.722236][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.727073][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.732259][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 62.737712][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.743248][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.749219][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.754664][ T1154] ext4_writepages+0x1ab7/0x3400 [ 62.759585][ T1154] ? mark_lock+0x30/0xdd0 [ 62.763916][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.769553][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.775168][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.779828][ T1154] do_writepages+0xfa/0x2a0 [ 62.784333][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.789945][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 62.794962][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.800156][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.805000][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.810709][ T1154] ? collapse_file+0x3575/0x4300 [ 62.815626][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.821691][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.826880][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.832854][ T1154] collapse_file+0x357f/0x4300 [ 62.837696][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 62.843050][ T1154] ? khugepaged+0x24fa/0x3f80 [ 62.852433][ T1154] khugepaged+0x3049/0x3f80 [ 62.856936][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.862554][ T1154] ? lock_downgrade+0x840/0x840 [ 62.867572][ T1154] ? finish_wait+0x260/0x260 [ 62.872151][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.877937][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.883941][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.888962][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.894584][ T1154] kthread+0x388/0x470 [ 62.898645][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.904347][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.910051][ T1154] ret_from_fork+0x24/0x30