[ OK ] Reached target Basic System. Starting OpenBSD Secure Shell server... Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Regular background program processing daemon. Starting System Logging Service... Starting Permit User Sessions... [ OK ] Started Permit User Sessions. [ OK ] Started System Logging Service. [ OK ] Started OpenBSD Secure Shell server. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started Getty on tty6. [ OK ] Started Getty on tty5. [ OK ] Started Getty on tty4. [ OK ] Started Getty on tty3. [ OK ] Started Getty on tty2. [ OK ] Started Serial Getty on ttyS0. [ OK ] Started Getty on tty1. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. Starting Load/Save RF Kill Switch Status... [ 52.140367][ T6756] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6756 [ 52.149883][ T6756] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 52.155787][ T6756] CPU: 0 PID: 6756 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 52.164023][ T6756] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.174081][ T6756] Call Trace: [ 52.177468][ T6756] dump_stack+0x188/0x20d [ 52.181838][ T6756] debug_smp_processor_id.cold+0x88/0x9b [ 52.187810][ T6756] ext4_mb_new_blocks+0xa77/0x3b30 [ 52.187846][ T6756] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.187874][ T6756] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.204147][ T6756] ext4_ext_map_blocks+0x2044/0x3410 [ 52.209447][ T6756] ? ext4_ext_release+0x10/0x10 [ 52.214321][ T6756] ? __down_timeout+0x2d0/0x2d0 [ 52.219190][ T6756] ? ext4_es_lookup_extent+0x41d/0xd30 [[ 52.224659][ T6756] ext4_map_blocks+0x4cb/0x1640 [ 52.229613][ T6756] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.234817][ T6756] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.240408][ T6756] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.246431][ T6756] ? prandom_u32_state+0xe/0x170  OK [0[ 52.251369][ T6756] ? __brelse+0x84/0xa0 [ 52.256977][ T6756] ? __ext4_new_inode+0x144/0x57c0 m[ 52.262088][ T6756] ext4_getblk+0xad/0x520 [ 52.266482][ T6756] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.272204][ T6756] ? ext4_free_inode+0x17e0/0x17e0 ] [ 52.277324][ T6756] ext4_bread+0x7c/0x380 [ 52.281723][ T6756] ? ext4_getblk+0x520/0x520 [ 52.286311][ T6756] ? dqget+0xff0/0xff0 Started Update U[ 52.290380][ T6756] ext4_append+0x153/0x360 TMP about System[ 52.296161][ T6756] ext4_mkdir+0x5e0/0xdf0 [ 52.301907][ T6756] ? ext4_rmdir+0xde0/0xde0 Runlevel Change[ 52.306497][ T6756] ? security_inode_permission+0xc4/0xf0 [ 52.313511][ T6756] vfs_mkdir+0x419/0x690 s. [ 52.317756][ T6756] do_mkdirat+0x21e/0x280 [ 52.322505][ T6756] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.327346][ T6756] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.333425][ T6756] ? do_syscall_64+0x21/0x7d0 [ 52.338114][ T6756] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.344093][ T6756] do_syscall_64+0xf6/0x7d0 [ 52.348582][ T6756] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.354564][ T6756] RIP: 0033:0x7fad5a099687 [ 52.358975][ T6756] Code: 00 b8 ff ff ff ff c3 0f 1f 40 00 48 8b 05 09 d8 2b 00 64 c7 00 5f 00 00 00 b8 ff ff ff ff c3 0f 1f 40 00 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d e1 d7 2b 00 f7 d8 64 89 01 48 [ 52.378574][ T6756] RSP: 002b:00007ffc1073e138 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.386976][ T6756] RAX: ffffffffffffffda RBX: 00005617b5a25985 RCX: 00007fad5a099687 [ 52.394924][ T6756] RDX: 00007ffc1073e000 RSI: 00000000000001ed RDI: 00005617b5a25985 [ 52.402872][ T6756] RBP: 00007fad5a099680 R08: 0000000000000100 R09: 0000000000000000 [ 52.410821][ T6756] R10: 00005617b5a25980 R11: 0000000000000246 R12: 00000000000001ed [ 52.418771][ T6756] R13: 00007ffc1073e2c0 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 55.977309][ T155] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:3/155 [ 55.986449][ T155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 55.992426][ T155] CPU: 1 PID: 155 Comm: kworker/u4:3 Not tainted 5.7.0-syzkaller #0 [ 56.000413][ T155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.010629][ T155] Workqueue: writeback wb_workfn (flush-8:0) [ 56.016602][ T155] Call Trace: [ 56.020052][ T155] dump_stack+0x188/0x20d [ 56.024442][ T155] debug_smp_processor_id.cold+0x88/0x9b [ 56.030061][ T155] ext4_mb_new_blocks+0xa77/0x3b30 [ 56.035157][ T155] ? __kmalloc+0x62f/0x7a0 [ 56.039577][ T155] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.045013][ T155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.050724][ T155] ext4_ext_map_blocks+0x2044/0x3410 [ 56.056003][ T155] ? ext4_ext_release+0x10/0x10 [ 56.060928][ T155] ? __down_timeout+0x2d0/0x2d0 [ 56.065753][ T155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 56.071208][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.076668][ T155] ext4_map_blocks+0x4cb/0x1640 [ 56.081510][ T155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.086682][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.092118][ T155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.097639][ T155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.103591][ T155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.109028][ T155] ext4_writepages+0x1ab7/0x3400 [ 56.113952][ T155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.119588][ T155] ? __lock_acquire+0x2224/0x48a0 [ 56.124597][ T155] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.130559][ T155] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.136519][ T155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.143198][ T155] ? do_writepages+0xfa/0x2a0 [ 56.147877][ T155] do_writepages+0xfa/0x2a0 [ 56.152357][ T155] ? page_writeback_cpu_online+0x10/0x10 [ 56.157978][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.163414][ T155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.168935][ T155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.174889][ T155] ? lock_downgrade+0x840/0x840 [ 56.179732][ T155] __writeback_single_inode+0x12a/0x1410 [ 56.185365][ T155] ? _raw_spin_unlock+0x24/0x40 [ 56.190209][ T155] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.196206][ T155] writeback_sb_inodes+0x515/0xdd0 [ 56.201310][ T155] ? __writeback_single_inode+0x1410/0x1410 [ 56.207192][ T155] __writeback_inodes_wb+0xc3/0x250 [ 56.212372][ T155] wb_writeback+0x910/0xd90 [ 56.216872][ T155] ? print_usage_bug+0x240/0x240 [ 56.221795][ T155] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.228113][ T155] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.233984][ T155] ? cpumask_next+0x3c/0x40 [ 56.238639][ T155] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.244956][ T155] wb_workfn+0xadf/0x10d0 [ 56.249266][ T155] ? inode_wait_for_writeback+0x30/0x30 [ 56.254812][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.260249][ T155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.265780][ T155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.271738][ T155] process_one_work+0x965/0x16a0 [ 56.276655][ T155] ? lock_release+0x800/0x800 [ 56.281308][ T155] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.286667][ T155] ? rwlock_bug.part.0+0x90/0x90 [ 56.291586][ T155] worker_thread+0x96/0xe10 [ 56.296086][ T155] ? process_one_work+0x16a0/0x16a0 [ 56.301269][ T155] kthread+0x388/0x470 [ 56.305313][ T155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.311019][ T155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.316714][ T155] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.139' (ECDSA) to the list of known hosts. 2020/06/14 22:24:27 fuzzer started 2020/06/14 22:24:28 connecting to host at 10.128.0.26:40323 2020/06/14 22:24:28 checking machine... 2020/06/14 22:24:28 checking revisions... 2020/06/14 22:24:28 testing simple program... [ 57.243221][ T6829] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6829 [ 57.252324][ T6829] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.258374][ T6829] CPU: 0 PID: 6829 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 57.266259][ T6829] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.276292][ T6829] Call Trace: [ 57.279704][ T6829] dump_stack+0x188/0x20d [ 57.284015][ T6829] debug_smp_processor_id.cold+0x88/0x9b [ 57.289626][ T6829] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.294724][ T6829] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.300161][ T6829] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.305862][ T6829] ext4_ext_map_blocks+0x2044/0x3410 [ 57.311137][ T6829] ? ext4_ext_release+0x10/0x10 [ 57.315981][ T6829] ? __down_timeout+0x2d0/0x2d0 [ 57.320818][ T6829] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.326255][ T6829] ext4_map_blocks+0x4cb/0x1640 [ 57.331085][ T6829] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.336266][ T6829] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.341803][ T6829] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.347773][ T6829] ? prandom_u32_state+0xe/0x170 [ 57.353491][ T6829] ? __brelse+0x84/0xa0 [ 57.357630][ T6829] ? __ext4_new_inode+0x144/0x57c0 [ 57.362717][ T6829] ext4_getblk+0xad/0x520 [ 57.367023][ T6829] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.372730][ T6829] ? ext4_free_inode+0x17e0/0x17e0 [ 57.377816][ T6829] ext4_bread+0x7c/0x380 [ 57.382031][ T6829] ? ext4_getblk+0x520/0x520 [ 57.386595][ T6829] ? dqget+0xff0/0xff0 [ 57.390640][ T6829] ext4_append+0x153/0x360 [ 57.395033][ T6829] ext4_mkdir+0x5e0/0xdf0 [ 57.399355][ T6829] ? ext4_rmdir+0xde0/0xde0 [ 57.403849][ T6829] ? security_inode_permission+0xc4/0xf0 [ 57.409462][ T6829] vfs_mkdir+0x419/0x690 [ 57.413682][ T6829] do_mkdirat+0x21e/0x280 [ 57.418007][ T6829] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.422843][ T6829] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.428798][ T6829] ? do_syscall_64+0x21/0x7d0 [ 57.433450][ T6829] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.439406][ T6829] do_syscall_64+0xf6/0x7d0 [ 57.443905][ T6829] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.449770][ T6829] RIP: 0033:0x4b02a0 [ 57.453640][ T6829] 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 [ 57.473244][ T6829] RSP: 002b:000000c0000df4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 57.481630][ T6829] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 57.489578][ T6829] RDX: 00000000000001c0 RSI: 000000c00009cd00 RDI: ffffffffffffff9c [ 57.497524][ T6829] RBP: 000000c0000df510 R08: 0000000000000000 R09: 0000000000000000 [ 57.505470][ T6829] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 57.513418][ T6829] R13: 0000000000000069 R14: 0000000000000068 R15: 0000000000000100 [ 57.533683][ T6844] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6844 [ 57.543171][ T6844] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.549148][ T6844] CPU: 0 PID: 6844 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 57.557381][ T6844] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.567430][ T6844] Call Trace: [ 57.570725][ T6844] dump_stack+0x188/0x20d [ 57.575072][ T6844] debug_smp_processor_id.cold+0x88/0x9b [ 57.580719][ T6844] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.585847][ T6844] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.591491][ T6844] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.597221][ T6844] ext4_ext_map_blocks+0x2044/0x3410 [ 57.602520][ T6844] ? ext4_ext_release+0x10/0x10 [ 57.607389][ T6844] ? __down_timeout+0x2d0/0x2d0 [ 57.612261][ T6844] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.617703][ T6844] ext4_map_blocks+0x4cb/0x1640 [ 57.622536][ T6844] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.627713][ T6844] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.633253][ T6844] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.639207][ T6844] ? prandom_u32_state+0xe/0x170 [ 57.644131][ T6844] ? __brelse+0x84/0xa0 [ 57.648262][ T6844] ? __ext4_new_inode+0x144/0x57c0 [ 57.653349][ T6844] ext4_getblk+0xad/0x520 [ 57.657656][ T6844] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.663356][ T6844] ? ext4_free_inode+0x17e0/0x17e0 [ 57.668443][ T6844] ext4_bread+0x7c/0x380 [ 57.672677][ T6844] ? ext4_getblk+0x520/0x520 [ 57.677246][ T6844] ? dqget+0xff0/0xff0 [ 57.681311][ T6844] ext4_append+0x153/0x360 [ 57.685703][ T6844] ext4_mkdir+0x5e0/0xdf0 [ 57.690024][ T6844] ? ext4_rmdir+0xde0/0xde0 [ 57.694503][ T6844] ? security_inode_permission+0xc4/0xf0 [ 57.700114][ T6844] vfs_mkdir+0x419/0x690 [ 57.704334][ T6844] do_mkdirat+0x21e/0x280 [ 57.708646][ T6844] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.713472][ T6844] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.719429][ T6844] ? do_syscall_64+0x21/0x7d0 [ 57.724174][ T6844] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.730149][ T6844] do_syscall_64+0xf6/0x7d0 [ 57.734628][ T6844] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.740497][ T6844] RIP: 0033:0x45bee7 [ 57.744369][ T6844] 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 [ 57.764033][ T6844] RSP: 002b:00007fff06480eb8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 57.772431][ T6844] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 57.780376][ T6844] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fff06481090 [ 57.788321][ T6844] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003080 [ 57.796278][ T6844] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 57.804230][ T6844] R13: 00007fff06481090 R14: 8421084210842109 R15: 00007fff0648109c [ 57.889665][ T6845] IPVS: ftp: loaded support on port[0] = 21 [ 57.925134][ T6845] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6845 [ 57.934604][ T6845] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.940703][ T6845] CPU: 0 PID: 6845 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 57.949278][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.959309][ T6845] Call Trace: [ 57.962604][ T6845] dump_stack+0x188/0x20d [ 57.966926][ T6845] debug_smp_processor_id.cold+0x88/0x9b [ 57.972533][ T6845] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.977627][ T6845] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.983070][ T6845] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.988767][ T6845] ext4_ext_map_blocks+0x2044/0x3410 [ 57.994049][ T6845] ? ext4_ext_release+0x10/0x10 [ 57.998883][ T6845] ? __down_timeout+0x2d0/0x2d0 [ 58.003710][ T6845] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.009306][ T6845] ext4_map_blocks+0x4cb/0x1640 [ 58.014150][ T6845] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.019337][ T6845] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.025234][ T6845] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.031452][ T6845] ? prandom_u32_state+0xe/0x170 [ 58.036369][ T6845] ? __brelse+0x84/0xa0 [ 58.040639][ T6845] ? __ext4_new_inode+0x144/0x57c0 [ 58.045748][ T6845] ext4_getblk+0xad/0x520 [ 58.050145][ T6845] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.055839][ T6845] ? ext4_free_inode+0x17e0/0x17e0 [ 58.061019][ T6845] ext4_bread+0x7c/0x380 [ 58.065237][ T6845] ? ext4_getblk+0x520/0x520 [ 58.069801][ T6845] ? dqget+0xff0/0xff0 [ 58.073849][ T6845] ext4_append+0x153/0x360 [ 58.078243][ T6845] ext4_mkdir+0x5e0/0xdf0 [ 58.082688][ T6845] ? ext4_rmdir+0xde0/0xde0 [ 58.087208][ T6845] ? security_inode_permission+0xc4/0xf0 [ 58.092831][ T6845] vfs_mkdir+0x419/0x690 [ 58.097069][ T6845] do_mkdirat+0x21e/0x280 [ 58.101380][ T6845] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.106213][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.112188][ T6845] ? do_syscall_64+0x21/0x7d0 [ 58.116841][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.122806][ T6845] do_syscall_64+0xf6/0x7d0 [ 58.127312][ T6845] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.133286][ T6845] RIP: 0033:0x45bee7 [ 58.137158][ T6845] 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 [ 58.156744][ T6845] RSP: 002b:00007fff06480da8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 58.165136][ T6845] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 58.173152][ T6845] RDX: 00007fff06480df3 RSI: 00000000000001ff RDI: 00007fff06480df0 [ 58.181107][ T6845] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 58.189069][ T6845] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 58.197017][ T6845] R13: 00007fff06480de0 R14: 0000000000000000 R15: 00007fff06480df0 [ 58.245002][ T6845] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6845 [ 58.254638][ T6845] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.260614][ T6845] CPU: 1 PID: 6845 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.268849][ T6845] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.279002][ T6845] Call Trace: [ 58.282298][ T6845] dump_stack+0x188/0x20d [ 58.286655][ T6845] debug_smp_processor_id.cold+0x88/0x9b [ 58.292316][ T6845] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.297448][ T6845] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.302913][ T6845] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.308624][ T6845] ext4_ext_map_blocks+0x2044/0x3410 [ 58.313893][ T6845] ? ext4_ext_release+0x10/0x10 [ 58.318833][ T6845] ? __down_timeout+0x2d0/0x2d0 [ 58.323674][ T6845] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.329124][ T6845] ext4_map_blocks+0x4cb/0x1640 [ 58.333977][ T6845] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.339161][ T6845] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.344693][ T6845] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.350657][ T6845] ? prandom_u32_state+0xe/0x170 [ 58.355575][ T6845] ? __brelse+0x84/0xa0 [ 58.359712][ T6845] ? __ext4_new_inode+0x144/0x57c0 [ 58.364841][ T6845] ext4_getblk+0xad/0x520 [ 58.369152][ T6845] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.374857][ T6845] ? ext4_free_inode+0x17e0/0x17e0 [ 58.379951][ T6845] ext4_bread+0x7c/0x380 [ 58.384183][ T6845] ? ext4_getblk+0x520/0x520 [ 58.389011][ T6845] ? dqget+0xff0/0xff0 [ 58.393234][ T6845] ext4_append+0x153/0x360 [ 58.397754][ T6845] ext4_mkdir+0x5e0/0xdf0 [ 58.402082][ T6845] ? ext4_rmdir+0xde0/0xde0 [ 58.406565][ T6845] ? security_inode_permission+0xc4/0xf0 [ 58.412174][ T6845] vfs_mkdir+0x419/0x690 [ 58.416409][ T6845] do_mkdirat+0x21e/0x280 [ 58.420741][ T6845] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.425585][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.431562][ T6845] ? do_syscall_64+0x21/0x7d0 [ 58.436232][ T6845] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.442204][ T6845] do_syscall_64+0xf6/0x7d0 [ 58.446708][ T6845] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.452574][ T6845] RIP: 0033:0x45bee7 [ 58.456474][ T6845] 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 [ 58.476102][ T6845] RSP: 002b:00007fff06480da8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 58.484692][ T6845] RAX: ffffffffffffffda RBX: 000000000000e381 RCX: 000000000045bee7 2020/06/14 22:24:29 building call list... [ 58.492667][ T6845] RDX: 00007fff06480df3 RSI: 00000000000001ff RDI: 00007fff06480df0 [ 58.500621][ T6845] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 58.508582][ T6845] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 58.516543][ T6845] R13: 00007fff06480de0 R14: 000000000000e371 R15: 00007fff06480df0 [ 58.814676][ T188] tipc: TX() has been purged, node left! [ 58.942795][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 58.952419][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.958412][ T1157] CPU: 1 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 58.966292][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.976367][ T1157] Call Trace: [ 58.979656][ T1157] dump_stack+0x188/0x20d [ 58.983986][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 58.989640][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.994744][ T1157] ? __kmalloc+0x62f/0x7a0 [ 58.999256][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.004707][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.010426][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 59.015733][ T1157] ? ext4_ext_release+0x10/0x10 [ 59.020614][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 59.025639][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.031101][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 59.035955][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.041153][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 59.046623][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.052255][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.058242][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.063714][ T1157] ext4_writepages+0x1ab7/0x3400 [ 59.068686][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.074339][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.080101][ T1157] ? do_writepages+0xfa/0x2a0 [ 59.084775][ T1157] do_writepages+0xfa/0x2a0 [ 59.089284][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 59.094915][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 59.099938][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 59.105158][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 59.110014][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.115731][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 59.121801][ T1157] ? preempt_schedule_thunk+0x16/0x18 [ 59.127179][ T1157] collapse_file+0x357f/0x4300 [ 59.131961][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 59.137337][ T1157] ? khugepaged+0x24fa/0x3f80 [ 59.142037][ T1157] khugepaged+0x3049/0x3f80 [ 59.146565][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.152194][ T1157] ? lock_downgrade+0x840/0x840 [ 59.157043][ T1157] ? finish_wait+0x260/0x260 [ 59.161633][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.167436][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.173421][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 59.178575][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.184220][ T1157] kthread+0x388/0x470 [ 59.188295][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.194015][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.199737][ T1157] ret_from_fork+0x24/0x30 [ 59.275827][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 59.284991][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.290967][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.298854][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.308914][ T1157] Call Trace: [ 59.312211][ T1157] dump_stack+0x188/0x20d [ 59.316545][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 59.322196][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.327348][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.332808][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.338959][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 59.344246][ T1157] ? ext4_ext_release+0x10/0x10 [ 59.349114][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 59.353955][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.359417][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 59.364277][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.369470][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 59.374930][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.380469][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.386445][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.391925][ T1157] ext4_writepages+0x1ab7/0x3400 [ 59.396967][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.402621][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.408246][ T1157] ? do_writepages+0xfa/0x2a0 [ 59.413355][ T1157] do_writepages+0xfa/0x2a0 [ 59.417860][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 59.423503][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 59.428525][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 59.433803][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 59.438660][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.444390][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 59.450460][ T1157] ? preempt_schedule_thunk+0x16/0x18 [ 59.456528][ T1157] collapse_file+0x357f/0x4300 [ 59.461304][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 59.466668][ T1157] ? khugepaged+0x24fa/0x3f80 [ 59.471359][ T1157] khugepaged+0x3049/0x3f80 [ 59.475882][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.481508][ T1157] ? lock_downgrade+0x840/0x840 [ 59.486370][ T1157] ? finish_wait+0x260/0x260 [ 59.490961][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.496760][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.502761][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 59.507781][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.513406][ T1157] kthread+0x388/0x470 [ 59.517468][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.523182][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.528896][ T1157] ret_from_fork+0x24/0x30 [ 59.709310][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 59.718429][ T1157] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.724320][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.732196][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.742274][ T1157] Call Trace: [ 59.745561][ T1157] dump_stack+0x188/0x20d [ 59.749891][ T1157] debug_smp_processor_id.cold+0x88/0x9b [ 59.755517][ T1157] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.760633][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.766089][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.772242][ T1157] ext4_ext_map_blocks+0x2044/0x3410 [ 59.777528][ T1157] ? ext4_ext_release+0x10/0x10 [ 59.782391][ T1157] ? __down_timeout+0x2d0/0x2d0 [ 59.787266][ T1157] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.793158][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 59.798010][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.803219][ T1157] ? debug_smp_processor_id+0x2f/0x185 [ 59.808683][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.814229][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.820201][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.825661][ T1157] ext4_writepages+0x1ab7/0x3400 [ 59.830613][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.836272][ T1157] ? __ext4_mark_inode_dirty+0x950/0x950 [ 59.841901][ T1157] ? do_writepages+0xfa/0x2a0 [ 59.846578][ T1157] do_writepages+0xfa/0x2a0 [ 59.851082][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 59.856710][ T1157] ? do_raw_spin_lock+0x129/0x2e0 [ 59.861730][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 59.867270][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 59.872117][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.877859][ T1157] ? delete_from_page_cache_batch+0xec0/0xec0 [ 59.883955][ T1157] ? preempt_schedule_thunk+0x16/0x18 [ 59.889329][ T1157] collapse_file+0x357f/0x4300 [ 59.894106][ T1157] ? collapse_huge_page+0x4370/0x4370 [ 59.899470][ T1157] ? khugepaged+0x24fa/0x3f80 [ 59.904162][ T1157] khugepaged+0x3049/0x3f80 [ 59.908685][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.914315][ T1157] ? lock_downgrade+0x840/0x840 [ 59.919159][ T1157] ? finish_wait+0x260/0x260 [ 59.923753][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.929552][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.935666][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 59.940705][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.946331][ T1157] kthread+0x388/0x470 [ 59.950394][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.956106][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.961821][ T1157] ret_from_fork+0x24/0x30 executing program [ 60.289284][ T6829] can: request_module (can-proto-0) failed. [ 61.619770][ T6829] can: request_module (can-proto-0) failed. [ 61.631082][ T6829] can: request_module (can-proto-0) failed.