[ OK ] Started Regular background program processing daemon. [ OK ] Started Permit User Sessions. [ 44.904239][ T6485] sshd (6485) used greatest stack depth: 22736 bytes left [ 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 ] Listening on Load/Save RF Kill Switch Status /dev/rfkill Watch. [ 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 Getty on tty1. [ OK ] Started Serial Getty on ttyS0. [ OK ] Reached target Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... Starting Load/Save RF Kill Switch Status... [ 52.480556][ T6729] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6729 [ 52.490065][ T6729] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 52.495985][ T6729] CPU: 1 PID: 6729 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 52.504219][ T6729] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 52.514274][ T6729] Call Trace: [ 52.517583][ T6729] dump_stack+0x188/0x20d [ 52.522272][ T6729] debug_smp_processor_id.cold+0x88/0x9b [ 52.522298][ T6729] ext4_mb_new_blocks+0xa77/0x3b30 [ 52.533169][ T6729] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.538635][ T6729] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.544368][ T6729] ext4_ext_map_blocks+0x2044/0x3410 [ 52.549693][ T6729] ? ext4_ext_release+0x10/0x10 [ 52.554576][ T6729] ? __down_timeout+0x2d0/0x2d0 [ 52.559478][ T6729] ? ext4_es_lookup_extent+0x41d/0xd30 [ 52.564964][ T6729] ext4_map_blocks+0x4cb/0x1640 [ 52.569859][ T6729] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.575059][ T6729] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.580646][ T6729] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.586746][ T6729] ? prandom_u32_state+0xe/0x170 [ 52.591726][ T6729] ? __brelse+0x84/0xa0 [ 52.595901][ T6729] ? __ext4_new_inode+0x144/0x57c0 [ 52.601010][ T6729] ext4_getblk+0xad/0x520 [ 52.605343][ T6729] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.611064][ T6729] ? ext4_free_inode+0x17e0/0x17e0 [ 52.616199][ T6729] ext4_bread+0x7c/0x380 [ 52.620434][ T6729] ? ext4_getblk+0x520/0x520 [ 52.625006][ T6729] ? dqget+0xff0/0xff0 [ 52.629061][ T6729] ext4_append+0x153/0x360 [ 52.633465][ T6729] ext4_mkdir+0x5e0/0xdf0 [ 52.637792][ T6729] ? ext4_rmdir+0xde0/0xde0 [ 52.642294][ T6729] ? security_inode_permission+0xc4/0xf0 [ 52.647924][ T6729] vfs_mkdir+0x419/0x690 [ 52.652170][ T6729] do_mkdirat+0x21e/0x280 [ 52.656522][ T6729] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.661421][ T6729] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.667416][ T6729] ? do_syscall_64+0x21/0x7d0 [ 52.672697][ T6729] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.678679][ T6729] do_syscall_64+0xf6/0x7d0 [ 52.683184][ T6729] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 52.689064][ T6729] RIP: 0033:0x7f55e2ef7687 [ 52.693479][ T6729] 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 [ 52.713088][ T6729] RSP: 002b:00007ffef6c37b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.721503][ T6729] RAX: ffffffffffffffda RBX: 0000558fc37e1985 RCX: 00007f55e2ef7687 [ 52.729473][ T6729] RDX: 00007ffef6c37a60 RSI: 00000000000001ed RDI: 0000558fc37e1985 [ 52.737440][ T6729] RBP: 00007f55e2ef7680 R08: 0000000000000100 R09: 0000000000000000 [ 52.745414][ T6729] R10: 0000558fc37e1980 R11: 0000000000000246 R12: 00000000000001ed [ 52.753389][ T6729] R13: 00007ffef6c37d20 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Update UTMP about System Runlevel Changes. [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.498641][ T155] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:4/155 [ 56.507919][ T155] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 56.513891][ T155] CPU: 1 PID: 155 Comm: kworker/u4:4 Not tainted 5.7.0-syzkaller #0 [ 56.521907][ T155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.532000][ T155] Workqueue: writeback wb_workfn (flush-8:0) [ 56.537959][ T155] Call Trace: [ 56.541234][ T155] dump_stack+0x188/0x20d [ 56.545557][ T155] debug_smp_processor_id.cold+0x88/0x9b [ 56.551169][ T155] ext4_mb_new_blocks+0xa77/0x3b30 [ 56.556266][ T155] ? __kmalloc+0x62f/0x7a0 [ 56.560936][ T155] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.566391][ T155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.572089][ T155] ext4_ext_map_blocks+0x2044/0x3410 [ 56.577353][ T155] ? ext4_ext_release+0x10/0x10 [ 56.582204][ T155] ? __down_timeout+0x2d0/0x2d0 [ 56.587045][ T155] ? ext4_es_lookup_extent+0x41d/0xd30 [ 56.592490][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.597926][ T155] ext4_map_blocks+0x4cb/0x1640 [ 56.602760][ T155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.607942][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.613389][ T155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.619804][ T155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.625775][ T155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.631392][ T155] ext4_writepages+0x1ab7/0x3400 [ 56.636358][ T155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.641992][ T155] ? __lock_acquire+0x2224/0x48a0 [ 56.647008][ T155] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.652970][ T155] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.658932][ T155] ? __ext4_mark_inode_dirty+0x950/0x950 [ 56.664540][ T155] ? do_writepages+0xfa/0x2a0 [ 56.669198][ T155] do_writepages+0xfa/0x2a0 [ 56.673684][ T155] ? page_writeback_cpu_online+0x10/0x10 [ 56.679292][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.684733][ T155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.690254][ T155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.696218][ T155] ? lock_downgrade+0x840/0x840 [ 56.701046][ T155] __writeback_single_inode+0x12a/0x1410 [ 56.706667][ T155] ? _raw_spin_unlock+0x24/0x40 [ 56.711492][ T155] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.717460][ T155] writeback_sb_inodes+0x515/0xdd0 [ 56.722554][ T155] ? __writeback_single_inode+0x1410/0x1410 [ 56.728447][ T155] __writeback_inodes_wb+0xc3/0x250 [ 56.733622][ T155] wb_writeback+0x910/0xd90 [ 56.738112][ T155] ? print_usage_bug+0x240/0x240 [ 56.743029][ T155] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.749333][ T155] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.755218][ T155] ? cpumask_next+0x3c/0x40 [ 56.759798][ T155] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.764994][ T155] wb_workfn+0xadf/0x10d0 [ 56.769304][ T155] ? inode_wait_for_writeback+0x30/0x30 [ 56.774823][ T155] ? debug_smp_processor_id+0x2f/0x185 [ 56.780260][ T155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.785817][ T155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.791797][ T155] process_one_work+0x965/0x16a0 [ 56.796727][ T155] ? lock_release+0x800/0x800 [ 56.801385][ T155] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.806776][ T155] ? rwlock_bug.part.0+0x90/0x90 [ 56.811697][ T155] worker_thread+0x96/0xe10 [ 56.816189][ T155] ? process_one_work+0x16a0/0x16a0 [ 56.821367][ T155] kthread+0x388/0x470 [ 56.825411][ T155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.831105][ T155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.836815][ T155] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.93' (ECDSA) to the list of known hosts. 2020/06/13 17:48:42 fuzzer started 2020/06/13 17:48:42 connecting to host at 10.128.0.26:35347 2020/06/13 17:48:42 checking machine... 2020/06/13 17:48:42 checking revisions... 2020/06/13 17:48:42 testing simple program... [ 57.827780][ T6807] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6807 [ 57.836978][ T6807] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.842996][ T6807] CPU: 1 PID: 6807 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 57.850908][ T6807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.861063][ T6807] Call Trace: [ 57.864391][ T6807] dump_stack+0x188/0x20d [ 57.868741][ T6807] debug_smp_processor_id.cold+0x88/0x9b [ 57.874379][ T6807] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.879497][ T6807] ? ext4_ext_find_goal+0x140/0x200 [ 57.884716][ T6807] ext4_ext_map_blocks+0x2044/0x3410 [ 57.889990][ T6807] ? ext4_ext_release+0x10/0x10 [ 57.894826][ T6807] ? __down_timeout+0x2d0/0x2d0 [ 57.899652][ T6807] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.905092][ T6807] ext4_map_blocks+0x4cb/0x1640 [ 57.910060][ T6807] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.915288][ T6807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.920811][ T6807] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.926767][ T6807] ? prandom_u32_state+0xe/0x170 [ 57.931683][ T6807] ? __brelse+0x84/0xa0 [ 57.935816][ T6807] ? __ext4_new_inode+0x144/0x57c0 [ 57.940923][ T6807] ext4_getblk+0xad/0x520 [ 57.945232][ T6807] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.950946][ T6807] ? ext4_free_inode+0x17e0/0x17e0 [ 57.956142][ T6807] ext4_bread+0x7c/0x380 [ 57.960374][ T6807] ? ext4_getblk+0x520/0x520 [ 57.964937][ T6807] ? dqget+0xff0/0xff0 [ 57.968988][ T6807] ext4_append+0x153/0x360 [ 57.973402][ T6807] ext4_mkdir+0x5e0/0xdf0 [ 57.977901][ T6807] ? ext4_rmdir+0xde0/0xde0 [ 57.982394][ T6807] ? security_inode_permission+0xc4/0xf0 [ 57.988021][ T6807] vfs_mkdir+0x419/0x690 [ 57.992251][ T6807] do_mkdirat+0x21e/0x280 [ 57.996557][ T6807] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.001404][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.007372][ T6807] ? do_syscall_64+0x21/0x7d0 [ 58.012041][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.018005][ T6807] do_syscall_64+0xf6/0x7d0 [ 58.022505][ T6807] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.028374][ T6807] RIP: 0033:0x4b02a0 [ 58.032252][ T6807] 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 [ 58.051919][ T6807] RSP: 002b:000000c0000cd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.060319][ T6807] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 58.068283][ T6807] RDX: 00000000000001c0 RSI: 000000c000026f80 RDI: ffffffffffffff9c [ 58.076229][ T6807] RBP: 000000c0000cd510 R08: 0000000000000000 R09: 0000000000000000 [ 58.084187][ T6807] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.092144][ T6807] R13: 000000000000007d R14: 000000000000007c R15: 0000000000000100 [ 58.117216][ T6810] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6810 [ 58.126970][ T6810] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.133037][ T6810] CPU: 0 PID: 6810 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.141355][ T6810] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.151389][ T6810] Call Trace: [ 58.154671][ T6810] dump_stack+0x188/0x20d [ 58.159002][ T6810] debug_smp_processor_id.cold+0x88/0x9b [ 58.164632][ T6810] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.169737][ T6810] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.175872][ T6810] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.181575][ T6810] ext4_ext_map_blocks+0x2044/0x3410 [ 58.186856][ T6810] ? ext4_ext_release+0x10/0x10 [ 58.191699][ T6810] ? __down_timeout+0x2d0/0x2d0 [ 58.196530][ T6810] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.201982][ T6810] ext4_map_blocks+0x4cb/0x1640 [ 58.206826][ T6810] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.212016][ T6810] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.217552][ T6810] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.223524][ T6810] ? prandom_u32_state+0xe/0x170 [ 58.228548][ T6810] ? __brelse+0x84/0xa0 [ 58.232711][ T6810] ? __ext4_new_inode+0x144/0x57c0 [ 58.237801][ T6810] ext4_getblk+0xad/0x520 [ 58.242113][ T6810] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.247900][ T6810] ? ext4_free_inode+0x17e0/0x17e0 [ 58.253945][ T6810] ext4_bread+0x7c/0x380 [ 58.258165][ T6810] ? ext4_getblk+0x520/0x520 [ 58.262737][ T6810] ? dqget+0xff0/0xff0 [ 58.266783][ T6810] ext4_append+0x153/0x360 [ 58.271179][ T6810] ext4_mkdir+0x5e0/0xdf0 [ 58.275487][ T6810] ? ext4_rmdir+0xde0/0xde0 [ 58.279967][ T6810] ? security_inode_permission+0xc4/0xf0 [ 58.285578][ T6810] vfs_mkdir+0x419/0x690 [ 58.289809][ T6810] do_mkdirat+0x21e/0x280 [ 58.294116][ T6810] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.298956][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.304926][ T6810] ? do_syscall_64+0x21/0x7d0 [ 58.309579][ T6810] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.315537][ T6810] do_syscall_64+0xf6/0x7d0 [ 58.320018][ T6810] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.325947][ T6810] RIP: 0033:0x45bee7 [ 58.329822][ T6810] 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 [ 58.349518][ T6810] RSP: 002b:00007fffa1eaa958 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.358002][ T6810] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.365969][ T6810] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007fffa1eaab30 [ 58.373917][ T6810] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002d00 [ 58.381878][ T6810] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.390072][ T6810] R13: 00007fffa1eaab30 R14: 8421084210842109 R15: 00007fffa1eaab3c [ 58.472005][ T6811] IPVS: ftp: loaded support on port[0] = 21 [ 58.508474][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 58.517859][ T6811] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.523975][ T6811] CPU: 1 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.532207][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.542462][ T6811] Call Trace: [ 58.545743][ T6811] dump_stack+0x188/0x20d [ 58.550066][ T6811] debug_smp_processor_id.cold+0x88/0x9b [ 58.555858][ T6811] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.560963][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.566415][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.572308][ T6811] ext4_ext_map_blocks+0x2044/0x3410 [ 58.577576][ T6811] ? ext4_ext_release+0x10/0x10 [ 58.582413][ T6811] ? __down_timeout+0x2d0/0x2d0 [ 58.587251][ T6811] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.592697][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 58.597528][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.602703][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.608230][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.614198][ T6811] ? prandom_u32_state+0xe/0x170 [ 58.619124][ T6811] ? __brelse+0x84/0xa0 [ 58.623257][ T6811] ? __ext4_new_inode+0x144/0x57c0 [ 58.628360][ T6811] ext4_getblk+0xad/0x520 [ 58.632668][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.638406][ T6811] ? ext4_free_inode+0x17e0/0x17e0 [ 58.643508][ T6811] ext4_bread+0x7c/0x380 [ 58.647725][ T6811] ? ext4_getblk+0x520/0x520 [ 58.652467][ T6811] ? dqget+0xff0/0xff0 [ 58.656530][ T6811] ext4_append+0x153/0x360 [ 58.660927][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 58.665237][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 58.669983][ T6811] ? security_inode_permission+0xc4/0xf0 [ 58.675603][ T6811] vfs_mkdir+0x419/0x690 [ 58.679842][ T6811] do_mkdirat+0x21e/0x280 [ 58.684176][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.689032][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.695006][ T6811] ? do_syscall_64+0x21/0x7d0 [ 58.699664][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.705641][ T6811] do_syscall_64+0xf6/0x7d0 [ 58.710161][ T6811] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.716586][ T6811] RIP: 0033:0x45bee7 [ 58.720479][ T6811] 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 [ 58.740065][ T6811] RSP: 002b:00007fffa1eaa848 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 58.748474][ T6811] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 58.756784][ T6811] RDX: 00007fffa1eaa893 RSI: 00000000000001ff RDI: 00007fffa1eaa890 [ 58.764757][ T6811] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 58.772722][ T6811] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 58.780759][ T6811] R13: 00007fffa1eaa880 R14: 0000000000000000 R15: 00007fffa1eaa890 [ 58.828985][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 58.838443][ T6811] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 58.844343][ T6811] CPU: 1 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.852574][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.862632][ T6811] Call Trace: [ 58.865936][ T6811] dump_stack+0x188/0x20d [ 58.870280][ T6811] debug_smp_processor_id.cold+0x88/0x9b [ 58.875921][ T6811] ext4_mb_new_blocks+0xa77/0x3b30 [ 58.881057][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.886525][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.892262][ T6811] ext4_ext_map_blocks+0x2044/0x3410 [ 58.897558][ T6811] ? ext4_ext_release+0x10/0x10 [ 58.902412][ T6811] ? __down_timeout+0x2d0/0x2d0 [ 58.907242][ T6811] ? ext4_es_lookup_extent+0x41d/0xd30 [ 58.912687][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 58.917778][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.922964][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.928511][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.934474][ T6811] ? prandom_u32_state+0xe/0x170 [ 58.939410][ T6811] ? __brelse+0x84/0xa0 [ 58.943577][ T6811] ? __ext4_new_inode+0x144/0x57c0 [ 58.948776][ T6811] ext4_getblk+0xad/0x520 [ 58.953083][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.958885][ T6811] ? ext4_free_inode+0x17e0/0x17e0 [ 58.963973][ T6811] ext4_bread+0x7c/0x380 [ 58.968209][ T6811] ? ext4_getblk+0x520/0x520 [ 58.972780][ T6811] ? dqget+0xff0/0xff0 [ 58.976831][ T6811] ext4_append+0x153/0x360 [ 58.981228][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 58.985602][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 58.990085][ T6811] ? security_inode_permission+0xc4/0xf0 [ 58.995738][ T6811] vfs_mkdir+0x419/0x690 [ 58.999973][ T6811] do_mkdirat+0x21e/0x280 [ 59.004293][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.009165][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.015147][ T6811] ? do_syscall_64+0x21/0x7d0 [ 59.019800][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.025768][ T6811] do_syscall_64+0xf6/0x7d0 [ 59.030252][ T6811] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.036132][ T6811] RIP: 0033:0x45bee7 [ 59.040060][ T6811] 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 [ 59.059701][ T6811] RSP: 002b:00007fffa1eaa848 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.068094][ T6811] RAX: ffffffffffffffda RBX: 000000000000e5c9 RCX: 000000000045bee7 2020/06/13 17:48:44 building call list... [ 59.076043][ T6811] RDX: 00007fffa1eaa893 RSI: 00000000000001ff RDI: 00007fffa1eaa890 [ 59.083994][ T6811] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.091943][ T6811] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 59.099891][ T6811] R13: 00007fffa1eaa880 R14: 000000000000e5b9 R15: 00007fffa1eaa890 [ 59.387947][ T155] tipc: TX() has been purged, node left! [ 60.344666][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 60.353946][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.359968][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.367862][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.377934][ T1154] Call Trace: [ 60.381235][ T1154] dump_stack+0x188/0x20d [ 60.385665][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 60.391309][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.396426][ T1154] ? __kmalloc+0x62f/0x7a0 [ 60.400863][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.406324][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.412062][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 60.417396][ T1154] ? ext4_ext_release+0x10/0x10 [ 60.422454][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 60.427319][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.432771][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 60.437621][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.442827][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 60.448287][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.453829][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.459804][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.465255][ T1154] ext4_writepages+0x1ab7/0x3400 [ 60.470183][ T1154] ? mark_lock+0x30/0xdd0 [ 60.474510][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.480133][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.485739][ T1154] ? do_writepages+0xfa/0x2a0 [ 60.490393][ T1154] do_writepages+0xfa/0x2a0 [ 60.494886][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 60.500492][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 60.505492][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 60.510680][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 60.515523][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.521229][ T1154] ? collapse_file+0x3575/0x4300 [ 60.526140][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 60.532186][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.537359][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.543340][ T1154] collapse_file+0x357f/0x4300 [ 60.548121][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 60.553564][ T1154] ? khugepaged+0x24fa/0x3f80 [ 60.558252][ T1154] khugepaged+0x3049/0x3f80 [ 60.562802][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.568423][ T1154] ? lock_downgrade+0x840/0x840 [ 60.573254][ T1154] ? finish_wait+0x260/0x260 [ 60.577824][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.583641][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.589606][ T1154] ? __kthread_parkme+0x13f/0x1e0 executing program [ 60.594618][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.600225][ T1154] kthread+0x388/0x470 [ 60.604281][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.609973][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.615679][ T1154] ret_from_fork+0x24/0x30 [ 60.705134][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 60.714339][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.720783][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.728670][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.738724][ T1154] Call Trace: [ 60.742015][ T1154] dump_stack+0x188/0x20d [ 60.746342][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 60.751973][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.757092][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.762550][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.768700][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 60.773984][ T1154] ? ext4_ext_release+0x10/0x10 [ 60.778864][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 60.783709][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.789170][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 60.794020][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.799210][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 60.804667][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.810208][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.816315][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.821791][ T1154] ext4_writepages+0x1ab7/0x3400 [ 60.826734][ T1154] ? mark_lock+0x30/0xdd0 [ 60.831079][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.836739][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 60.842379][ T1154] ? do_writepages+0xfa/0x2a0 [ 60.847058][ T1154] do_writepages+0xfa/0x2a0 [ 60.851570][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 60.857203][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 60.862243][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 60.867464][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 60.872318][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.878038][ T1154] ? collapse_file+0x3575/0x4300 [ 60.882988][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 60.889059][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.894251][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.900232][ T1154] collapse_file+0x357f/0x4300 [ 60.905010][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 60.910391][ T1154] ? khugepaged+0x24fa/0x3f80 [ 60.915081][ T1154] khugepaged+0x3049/0x3f80 [ 60.919602][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.925232][ T1154] ? lock_downgrade+0x840/0x840 [ 60.930097][ T1154] ? finish_wait+0x260/0x260 [ 60.934682][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.940480][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.946462][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 60.951501][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.957153][ T1154] kthread+0x388/0x470 [ 60.961228][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.966966][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.972684][ T1154] ret_from_fork+0x24/0x30 [ 61.050642][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.059882][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.065796][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.073673][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.083809][ T1154] Call Trace: [ 61.087114][ T1154] dump_stack+0x188/0x20d [ 61.091454][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 61.097079][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.102205][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.107665][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.113817][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 61.119110][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.123972][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 61.128837][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.138205][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.143060][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.148251][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 61.153712][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.159260][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.165236][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.170698][ T1154] ext4_writepages+0x1ab7/0x3400 [ 61.175633][ T1154] ? mark_lock+0x30/0xdd0 [ 61.179974][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.185629][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.191254][ T1154] ? do_writepages+0xfa/0x2a0 [ 61.195942][ T1154] do_writepages+0xfa/0x2a0 [ 61.200462][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 61.206089][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 61.211109][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 61.216303][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 61.221151][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.226865][ T1154] ? collapse_file+0x3575/0x4300 [ 61.231830][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.237902][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.243095][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.249078][ T1154] collapse_file+0x357f/0x4300 [ 61.253855][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 61.259219][ T1154] ? khugepaged+0x24fa/0x3f80 [ 61.263908][ T1154] khugepaged+0x3049/0x3f80 [ 61.268443][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.274069][ T1154] ? lock_downgrade+0x840/0x840 [ 61.278915][ T1154] ? finish_wait+0x260/0x260 [ 61.283501][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.289303][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.295545][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.300576][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.306199][ T1154] kthread+0x388/0x470 [ 61.310262][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.315972][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.321773][ T1154] ret_from_fork+0x24/0x30 [ 61.425438][ T6791] can: request_module (can-proto-0) failed. [ 61.920827][ T6791] can: request_module (can-proto-0) failed. [ 61.932584][ T6791] can: request_module (can-proto-0) failed.