[ 45.821342][ T1] R13: 0000000000000000 R14: 0000000000000017 R15: 00007ffc8a970fe0 [ OK ] Started Daily apt download activities. [ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. Starting getty on tty2-tty6 if dbus and logind are not available... [ OK ] Started Regular background program processing daemon. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ 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. Starting Load/Save RF Kill Switch Status... [ OK ] Started Serial Getty on ttyS0. [ 53.647341][ T6744] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6744 [ 53.657448][ T6744] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 53.663963][ T6744] CPU: 0 PID: 6744 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 53.672202][ T6744] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.682289][ T6744] Call Trace: [ 53.682311][ T6744] dump_stack+0x188/0x20d [ 53.682331][ T6744] debug_smp_processor_id.cold+0x88/0x9b [ 53.695790][ T6744] ext4_mb_new_blocks+0xa77/0x3b30 [ 53.695818][ T6744] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.706454][ T6744] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.712191][ T6744] ext4_ext_map_blocks+0x2044/0x3410 [ 53.717486][ T6744] ? ext4_ext_release+0x10/0x10 [[ 53.722358][ T6744] ? __down_timeout+0x2d0/0x2d0 [ 53.727267][ T6744] ? ext4_es_lookup_extent+0x41d/0xd30  OK [0[ 53.732743][ T6744] ext4_map_blocks+0x4cb/0x1640 [ 53.739086][ T6744] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.744309][ T6744] ? rcu_read_lock_sched_held+0x9c/0xd0 m] [ 53.749914][ T6744] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.756232][ T6744] ? prandom_u32_state+0xe/0x170 [ 53.761164][ T6744] ? __brelse+0x84/0xa0 [ 53.765318][ T6744] ? __ext4_new_inode+0x144/0x57c0 Started Getty on[ 53.770447][ T6744] ext4_getblk+0xad/0x520 [ 53.776235][ T6744] ? ext4_iomap_overwrite_begin+0xa0/0xa0 tty1.[ 53.781960][ T6744] ? ext4_free_inode+0x17e0/0x17e0 [ 53.787573][ T6744] ext4_bread+0x7c/0x380 [ 53.791899][ T6744] ? ext4_getblk+0x520/0x520 [ 53.796517][ T6744] ? dqget+0xff0/0xff0 [ 53.800792][ T6744] ext4_append+0x153/0x360 [ 53.805218][ T6744] ext4_mkdir+0x5e0/0xdf0 [ 53.809581][ T6744] ? ext4_rmdir+0xde0/0xde0 [ 53.809605][ T6744] ? security_inode_permission+0xc4/0xf0 [ 53.819833][ T6744] vfs_mkdir+0x419/0x690 [ 53.824078][ T6744] do_mkdirat+0x21e/0x280 [ 53.828426][ T6744] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.833287][ T6744] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [[ 53.839260][ T6744] ? do_syscall_64+0x21/0x7d0 [ 53.843993][ T6744] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.850861][ T6744] do_syscall_64+0xf6/0x7d0 [ 53.855369][ T6744] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 53.861267][ T6744] RIP: 0033:0x7f39aadeb687  OK [0[ 53.865775][ T6744] 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 [ 53.886756][ T6744] RSP: 002b:00007ffd47965f38 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.895166][ T6744] RAX: ffffffffffffffda RBX: 000055e5fc2f9985 RCX: 00007f39aadeb687 [ 53.903220][ T6744] RDX: 00007ffd47965e00 RSI: 00000000000001ed RDI: 000055e5fc2f9985 m] Reached targe[ 53.911190][ T6744] RBP: 00007f39aadeb680 R08: 0000000000000100 R09: 0000000000000000 [ 53.922627][ T6744] R10: 000055e5fc2f9980 R11: 0000000000000246 R12: 00000000000001ed [ 53.930628][ T6744] R13: 00007ffd479660c0 R14: 0000000000000000 R15: 0000000000000000 t Login Prompts. [ OK ] Reached target Multi-User System. [ OK ] Reached target Graphical Interface. Starting Update UTMP about System Runlevel Changes... [ OK ] Started Load/Save RF Kill Switch Status. [ OK ] Started Update UTMP about System Runlevel Changes. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 57.603051][ T6783] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:6/6783 [ 57.612524][ T6783] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.618693][ T6783] CPU: 1 PID: 6783 Comm: kworker/u4:6 Not tainted 5.7.0-syzkaller #0 [ 57.627088][ T6783] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.637163][ T6783] Workqueue: writeback wb_workfn (flush-8:0) [ 57.643124][ T6783] Call Trace: [ 57.646413][ T6783] dump_stack+0x188/0x20d [ 57.650739][ T6783] debug_smp_processor_id.cold+0x88/0x9b [ 57.656366][ T6783] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.661469][ T6783] ? __kmalloc+0x62f/0x7a0 [ 57.665960][ T6783] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.671399][ T6783] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.677197][ T6783] ext4_ext_map_blocks+0x2044/0x3410 [ 57.682464][ T6783] ? ext4_ext_release+0x10/0x10 [ 57.687333][ T6783] ? __down_timeout+0x2d0/0x2d0 [ 57.692160][ T6783] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.697593][ T6783] ? debug_smp_processor_id+0x2f/0x185 [ 57.703029][ T6783] ext4_map_blocks+0x4cb/0x1640 [ 57.707858][ T6783] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.713240][ T6783] ? debug_smp_processor_id+0x2f/0x185 [ 57.718737][ T6783] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.724356][ T6783] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.730391][ T6783] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.735898][ T6783] ext4_writepages+0x1ab7/0x3400 [ 57.740857][ T6783] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.747857][ T6783] ? __lock_acquire+0x2224/0x48a0 [ 57.752870][ T6783] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.758832][ T6783] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.764851][ T6783] ? __ext4_mark_inode_dirty+0x950/0x950 [ 57.770486][ T6783] ? do_writepages+0xfa/0x2a0 [ 57.775152][ T6783] do_writepages+0xfa/0x2a0 [ 57.779657][ T6783] ? page_writeback_cpu_online+0x10/0x10 [ 57.785296][ T6783] ? debug_smp_processor_id+0x2f/0x185 [ 57.793455][ T6783] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.798997][ T6783] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.804967][ T6783] ? lock_downgrade+0x840/0x840 [ 57.809802][ T6783] __writeback_single_inode+0x12a/0x1410 [ 57.815415][ T6783] ? _raw_spin_unlock+0x24/0x40 [ 57.820262][ T6783] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.826221][ T6783] writeback_sb_inodes+0x515/0xdd0 [ 57.831321][ T6783] ? __writeback_single_inode+0x1410/0x1410 [ 57.837202][ T6783] __writeback_inodes_wb+0xc3/0x250 [ 57.842381][ T6783] wb_writeback+0x910/0xd90 [ 57.846866][ T6783] ? print_usage_bug+0x240/0x240 [ 57.851781][ T6783] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.858084][ T6783] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.863955][ T6783] ? cpumask_next+0x3c/0x40 [ 57.868432][ T6783] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.873621][ T6783] wb_workfn+0xadf/0x10d0 [ 57.877930][ T6783] ? inode_wait_for_writeback+0x30/0x30 [ 57.883518][ T6783] ? debug_smp_processor_id+0x2f/0x185 [ 57.888971][ T6783] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.894505][ T6783] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.900471][ T6783] process_one_work+0x965/0x16a0 [ 57.905402][ T6783] ? lock_release+0x800/0x800 [ 57.910060][ T6783] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.915414][ T6783] ? rwlock_bug.part.0+0x90/0x90 [ 57.920370][ T6783] worker_thread+0x96/0xe10 [ 57.924888][ T6783] ? process_one_work+0x16a0/0x16a0 [ 57.930069][ T6783] kthread+0x388/0x470 [ 57.934121][ T6783] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.939820][ T6783] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.945528][ T6783] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.247' (ECDSA) to the list of known hosts. 2020/06/13 17:42:47 fuzzer started 2020/06/13 17:42:48 connecting to host at 10.128.0.26:39627 2020/06/13 17:42:48 checking machine... 2020/06/13 17:42:48 checking revisions... 2020/06/13 17:42:48 testing simple program... [ 59.167088][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6817 [ 59.176728][ T6817] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.182703][ T6817] CPU: 0 PID: 6817 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.191197][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.201948][ T6817] Call Trace: [ 59.205253][ T6817] dump_stack+0x188/0x20d [ 59.209674][ T6817] debug_smp_processor_id.cold+0x88/0x9b [ 59.215298][ T6817] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.220414][ T6817] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.225865][ T6817] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.231566][ T6817] ext4_ext_map_blocks+0x2044/0x3410 [ 59.236848][ T6817] ? ext4_ext_release+0x10/0x10 [ 59.241707][ T6817] ? __down_timeout+0x2d0/0x2d0 [ 59.246553][ T6817] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.252056][ T6817] ext4_map_blocks+0x4cb/0x1640 [ 59.256904][ T6817] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.262098][ T6817] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.267647][ T6817] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.273604][ T6817] ? prandom_u32_state+0xe/0x170 [ 59.278520][ T6817] ? __brelse+0x84/0xa0 [ 59.282709][ T6817] ? __ext4_new_inode+0x144/0x57c0 [ 59.287858][ T6817] ext4_getblk+0xad/0x520 [ 59.292218][ T6817] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.298103][ T6817] ? ext4_free_inode+0x17e0/0x17e0 [ 59.303192][ T6817] ext4_bread+0x7c/0x380 [ 59.307498][ T6817] ? ext4_getblk+0x520/0x520 [ 59.312069][ T6817] ? dqget+0xff0/0xff0 [ 59.316211][ T6817] ext4_append+0x153/0x360 [ 59.320604][ T6817] ext4_mkdir+0x5e0/0xdf0 [ 59.324945][ T6817] ? ext4_rmdir+0xde0/0xde0 [ 59.329426][ T6817] ? security_inode_permission+0xc4/0xf0 [ 59.335036][ T6817] vfs_mkdir+0x419/0x690 [ 59.339280][ T6817] do_mkdirat+0x21e/0x280 [ 59.343617][ T6817] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.348455][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.354432][ T6817] ? do_syscall_64+0x21/0x7d0 [ 59.359082][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.365043][ T6817] do_syscall_64+0xf6/0x7d0 [ 59.369540][ T6817] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.375422][ T6817] RIP: 0033:0x4b02a0 [ 59.379303][ T6817] 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 [ 59.399417][ T6817] RSP: 002b:000000c0000df4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.407824][ T6817] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 59.415777][ T6817] RDX: 00000000000001c0 RSI: 000000c00009a860 RDI: ffffffffffffff9c [ 59.423727][ T6817] RBP: 000000c0000df510 R08: 0000000000000000 R09: 0000000000000000 [ 59.431693][ T6817] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.439640][ T6817] R13: 0000000000000044 R14: 0000000000000043 R15: 0000000000000100 [ 59.455848][ T6836] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6836 [ 59.465314][ T6836] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.471205][ T6836] CPU: 0 PID: 6836 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.479425][ T6836] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.489466][ T6836] Call Trace: [ 59.492773][ T6836] dump_stack+0x188/0x20d [ 59.497081][ T6836] debug_smp_processor_id.cold+0x88/0x9b [ 59.503021][ T6836] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.508149][ T6836] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.513591][ T6836] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.520193][ T6836] ext4_ext_map_blocks+0x2044/0x3410 [ 59.525475][ T6836] ? ext4_ext_release+0x10/0x10 [ 59.530411][ T6836] ? __down_timeout+0x2d0/0x2d0 [ 59.535251][ T6836] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.540787][ T6836] ext4_map_blocks+0x4cb/0x1640 [ 59.545624][ T6836] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.550834][ T6836] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.556456][ T6836] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.562514][ T6836] ? prandom_u32_state+0xe/0x170 [ 59.567446][ T6836] ? __brelse+0x84/0xa0 [ 59.571671][ T6836] ? __ext4_new_inode+0x144/0x57c0 [ 59.576764][ T6836] ext4_getblk+0xad/0x520 [ 59.581072][ T6836] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.586782][ T6836] ? ext4_free_inode+0x17e0/0x17e0 [ 59.591983][ T6836] ext4_bread+0x7c/0x380 [ 59.596211][ T6836] ? ext4_getblk+0x520/0x520 [ 59.600775][ T6836] ? dqget+0xff0/0xff0 [ 59.604836][ T6836] ext4_append+0x153/0x360 [ 59.609243][ T6836] ext4_mkdir+0x5e0/0xdf0 [ 59.613554][ T6836] ? ext4_rmdir+0xde0/0xde0 [ 59.618035][ T6836] ? security_inode_permission+0xc4/0xf0 [ 59.623648][ T6836] vfs_mkdir+0x419/0x690 [ 59.627887][ T6836] do_mkdirat+0x21e/0x280 [ 59.632367][ T6836] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.637255][ T6836] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.643567][ T6836] ? do_syscall_64+0x21/0x7d0 [ 59.648228][ T6836] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.654291][ T6836] do_syscall_64+0xf6/0x7d0 [ 59.658791][ T6836] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 59.664662][ T6836] RIP: 0033:0x45bee7 [ 59.668532][ T6836] 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 [ 59.688989][ T6836] RSP: 002b:00007fff442e8048 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.697451][ T6836] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.705417][ T6836] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fff442e8220 [ 59.713369][ T6836] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003240 [ 59.721319][ T6836] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.729269][ T6836] R13: 00007fff442e8220 R14: 8421084210842109 R15: 00007fff442e822c [ 59.810804][ T6837] IPVS: ftp: loaded support on port[0] = 21 [ 59.848685][ T6837] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6837 [ 59.858398][ T6837] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 59.864493][ T6837] CPU: 1 PID: 6837 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.873704][ T6837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.883754][ T6837] Call Trace: [ 59.887046][ T6837] dump_stack+0x188/0x20d [ 59.891368][ T6837] debug_smp_processor_id.cold+0x88/0x9b [ 59.896996][ T6837] ext4_mb_new_blocks+0xa77/0x3b30 [ 59.902096][ T6837] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.907532][ T6837] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.913245][ T6837] ext4_ext_map_blocks+0x2044/0x3410 [ 59.918808][ T6837] ? ext4_ext_release+0x10/0x10 [ 59.923668][ T6837] ? __down_timeout+0x2d0/0x2d0 [ 59.928507][ T6837] ? ext4_es_lookup_extent+0x41d/0xd30 [ 59.933964][ T6837] ext4_map_blocks+0x4cb/0x1640 [ 59.938814][ T6837] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.944011][ T6837] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.950590][ T6837] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.956565][ T6837] ? prandom_u32_state+0xe/0x170 [ 59.961488][ T6837] ? __brelse+0x84/0xa0 [ 59.965629][ T6837] ? __ext4_new_inode+0x144/0x57c0 [ 59.970732][ T6837] ext4_getblk+0xad/0x520 [ 59.975044][ T6837] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.980754][ T6837] ? ext4_free_inode+0x17e0/0x17e0 [ 59.985853][ T6837] ext4_bread+0x7c/0x380 [ 59.990167][ T6837] ? ext4_getblk+0x520/0x520 [ 59.994747][ T6837] ? dqget+0xff0/0xff0 [ 59.998795][ T6837] ext4_append+0x153/0x360 [ 60.003223][ T6837] ext4_mkdir+0x5e0/0xdf0 [ 60.007567][ T6837] ? ext4_rmdir+0xde0/0xde0 [ 60.012059][ T6837] ? security_inode_permission+0xc4/0xf0 [ 60.017700][ T6837] vfs_mkdir+0x419/0x690 [ 60.021927][ T6837] do_mkdirat+0x21e/0x280 [ 60.026274][ T6837] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.031106][ T6837] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.037064][ T6837] ? do_syscall_64+0x21/0x7d0 [ 60.041721][ T6837] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.047770][ T6837] do_syscall_64+0xf6/0x7d0 [ 60.052269][ T6837] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.058242][ T6837] RIP: 0033:0x45bee7 [ 60.062116][ T6837] 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 [ 60.081872][ T6837] RSP: 002b:00007fff442e7f38 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.090257][ T6837] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.098215][ T6837] RDX: 00007fff442e7f83 RSI: 00000000000001ff RDI: 00007fff442e7f80 [ 60.106216][ T6837] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.114663][ T6837] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 60.122775][ T6837] R13: 00007fff442e7f70 R14: 0000000000000000 R15: 00007fff442e7f80 [ 60.172940][ T6837] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6837 [ 60.182410][ T6837] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 60.188317][ T6837] CPU: 0 PID: 6837 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.197421][ T6837] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.207481][ T6837] Call Trace: [ 60.210777][ T6837] dump_stack+0x188/0x20d [ 60.215119][ T6837] debug_smp_processor_id.cold+0x88/0x9b [ 60.220766][ T6837] ext4_mb_new_blocks+0xa77/0x3b30 [ 60.226004][ T6837] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.231614][ T6837] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.237368][ T6837] ext4_ext_map_blocks+0x2044/0x3410 [ 60.242642][ T6837] ? ext4_ext_release+0x10/0x10 [ 60.247499][ T6837] ? __down_timeout+0x2d0/0x2d0 [ 60.252328][ T6837] ? ext4_es_lookup_extent+0x41d/0xd30 [ 60.258297][ T6837] ext4_map_blocks+0x4cb/0x1640 [ 60.263159][ T6837] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.268446][ T6837] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.273993][ T6837] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.279957][ T6837] ? prandom_u32_state+0xe/0x170 [ 60.284875][ T6837] ? __brelse+0x84/0xa0 [ 60.289450][ T6837] ? __ext4_new_inode+0x144/0x57c0 [ 60.294752][ T6837] ext4_getblk+0xad/0x520 [ 60.299132][ T6837] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.304946][ T6837] ? ext4_free_inode+0x17e0/0x17e0 [ 60.310062][ T6837] ext4_bread+0x7c/0x380 [ 60.314303][ T6837] ? ext4_getblk+0x520/0x520 [ 60.318883][ T6837] ? dqget+0xff0/0xff0 [ 60.322939][ T6837] ext4_append+0x153/0x360 [ 60.327601][ T6837] ext4_mkdir+0x5e0/0xdf0 [ 60.332085][ T6837] ? ext4_rmdir+0xde0/0xde0 [ 60.336579][ T6837] ? security_inode_permission+0xc4/0xf0 [ 60.342300][ T6837] vfs_mkdir+0x419/0x690 [ 60.347079][ T6837] do_mkdirat+0x21e/0x280 [ 60.351400][ T6837] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.356243][ T6837] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.362232][ T6837] ? do_syscall_64+0x21/0x7d0 [ 60.367343][ T6837] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.373324][ T6837] do_syscall_64+0xf6/0x7d0 [ 60.377918][ T6837] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 60.384570][ T6837] RIP: 0033:0x45bee7 [ 60.388441][ T6837] 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 [ 60.408642][ T6837] RSP: 002b:00007fff442e7f38 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 2020/06/13 17:42:49 building call list... [ 60.417039][ T6837] RAX: ffffffffffffffda RBX: 000000000000eb03 RCX: 000000000045bee7 [ 60.425003][ T6837] RDX: 00007fff442e7f83 RSI: 00000000000001ff RDI: 00007fff442e7f80 [ 60.432950][ T6837] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.440905][ T6837] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 60.448854][ T6837] R13: 00007fff442e7f70 R14: 000000000000eaf3 R15: 00007fff442e7f80 [ 60.731780][ T6783] tipc: TX() has been purged, node left! [ 61.607379][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.616687][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.622758][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.630646][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.640693][ T1154] Call Trace: [ 61.643984][ T1154] dump_stack+0x188/0x20d [ 61.648312][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 61.653945][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.659047][ T1154] ? __kmalloc+0x62f/0x7a0 [ 61.663471][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.668923][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.674641][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 61.679931][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.684793][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 61.689646][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.695131][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 61.700073][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.705265][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 61.710723][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.716813][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.723661][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.729121][ T1154] ext4_writepages+0x1ab7/0x3400 [ 61.734055][ T1154] ? mark_lock+0x30/0xdd0 [ 61.738411][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.744078][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 61.749722][ T1154] ? do_writepages+0xfa/0x2a0 [ 61.754402][ T1154] do_writepages+0xfa/0x2a0 [ 61.758939][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 61.764582][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 61.769614][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 61.774830][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 61.779696][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.785427][ T1154] ? collapse_file+0x3575/0x4300 [ 61.790371][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 61.796453][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.801749][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.807747][ T1154] collapse_file+0x357f/0x4300 [ 61.812533][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 61.817914][ T1154] ? khugepaged+0x24fa/0x3f80 [ 61.822773][ T1154] khugepaged+0x3049/0x3f80 [ 61.827457][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.833185][ T1154] ? lock_downgrade+0x840/0x840 [ 61.838043][ T1154] ? finish_wait+0x260/0x260 [ 61.842666][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.848472][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.854453][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 61.859457][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.865083][ T1154] kthread+0x388/0x470 [ 61.869129][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.874824][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.880523][ T1154] ret_from_fork+0x24/0x30 [ 61.923087][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 61.932445][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.938344][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.946229][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.956370][ T1154] Call Trace: [ 61.959677][ T1154] dump_stack+0x188/0x20d [ 61.964115][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 61.969758][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.974888][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.980351][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.986536][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 61.991834][ T1154] ? ext4_ext_release+0x10/0x10 [ 61.996704][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 62.001555][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.007540][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.012407][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.017608][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 62.023095][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.028662][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.028680][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.040084][ T1154] ext4_writepages+0x1ab7/0x3400 [ 62.045034][ T1154] ? mark_lock+0x30/0xdd0 [ 62.049379][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.055037][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.060661][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.065419][ T1154] do_writepages+0xfa/0x2a0 executing program [ 62.069939][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.075567][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 62.080583][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.085777][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.090627][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.096342][ T1154] ? collapse_file+0x3575/0x4300 [ 62.101280][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.107361][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.112749][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.118746][ T1154] collapse_file+0x357f/0x4300 [ 62.123540][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 62.128914][ T1154] ? khugepaged+0x24fa/0x3f80 [ 62.133614][ T1154] khugepaged+0x3049/0x3f80 [ 62.138231][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.143870][ T1154] ? lock_downgrade+0x840/0x840 [ 62.148719][ T1154] ? finish_wait+0x260/0x260 [ 62.153305][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.159106][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.165261][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.170281][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.175907][ T1154] kthread+0x388/0x470 [ 62.179997][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.185707][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.191422][ T1154] ret_from_fork+0x24/0x30 [ 62.244990][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 62.254122][ T1154] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.260016][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.267892][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.277940][ T1154] Call Trace: [ 62.281239][ T1154] dump_stack+0x188/0x20d [ 62.285568][ T1154] debug_smp_processor_id.cold+0x88/0x9b [ 62.291279][ T1154] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.296491][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.301950][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.308095][ T1154] ext4_ext_map_blocks+0x2044/0x3410 [ 62.313996][ T1154] ? ext4_ext_release+0x10/0x10 [ 62.318870][ T1154] ? __down_timeout+0x2d0/0x2d0 [ 62.323711][ T1154] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.329182][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 62.334035][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.339224][ T1154] ? debug_smp_processor_id+0x2f/0x185 [ 62.344683][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.350220][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.356191][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.361650][ T1154] ext4_writepages+0x1ab7/0x3400 [ 62.366580][ T1154] ? mark_lock+0x30/0xdd0 [ 62.370945][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.376609][ T1154] ? __ext4_mark_inode_dirty+0x950/0x950 [ 62.382233][ T1154] ? do_writepages+0xfa/0x2a0 [ 62.386902][ T1154] do_writepages+0xfa/0x2a0 [ 62.391406][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 62.397115][ T1154] ? do_raw_spin_lock+0x129/0x2e0 [ 62.402131][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 62.407320][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 62.412171][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.417883][ T1154] ? collapse_file+0x3575/0x4300 [ 62.422816][ T1154] ? delete_from_page_cache_batch+0xec0/0xec0 [ 62.428883][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.434073][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.440053][ T1154] collapse_file+0x357f/0x4300 [ 62.444830][ T1154] ? collapse_huge_page+0x4370/0x4370 [ 62.450539][ T1154] ? khugepaged+0x24fa/0x3f80 [ 62.455227][ T1154] khugepaged+0x3049/0x3f80 [ 62.459747][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.465393][ T1154] ? lock_downgrade+0x840/0x840 [ 62.470236][ T1154] ? finish_wait+0x260/0x260 [ 62.474820][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.481311][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.487307][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 62.492331][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.497962][ T1154] kthread+0x388/0x470 [ 62.502033][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.507744][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.513461][ T1154] ret_from_fork+0x24/0x30 [ 62.560725][ T6826] can: request_module (can-proto-0) failed. [ 63.185468][ T6826] can: request_module (can-proto-0) failed. [ 63.196956][ T6826] can: request_module (can-proto-0) failed.