[ 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... Starting Load/Save RF Kill Switch Status... [ 55.741323][ T6746] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6746 [ 55.751112][ T6746] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 55.757342][ T6746] CPU: 1 PID: 6746 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 55.757350][ T6746] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.757355][ T6746] Call Trace: [ 55.757387][ T6746] dump_stack+0x188/0x20d [ 55.786336][ T6746] debug_smp_processor_id.cold+0x88/0x9b [ 55.791996][ T6746] ext4_mb_new_blocks+0xa77/0x3b30 [ 55.797228][ T6746] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.802699][ T6746] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.808523][ T6746] ext4_ext_map_blocks+0x2044/0x3410 [ 55.813836][ T6746] ? ext4_ext_release+0x10/0x10 [ 55.818723][ T6746] ? __down_timeout+0x2d0/0x2d0 [ 55.823572][ T6746] ? ext4_es_lookup_extent+0x41d/0xd30 [ 55.829030][ T6746] ext4_map_blocks+0x4cb/0x1640 [ 55.833921][ T6746] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.839132][ T6746] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.844679][ T6746] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.850656][ T6746] ? prandom_u32_state+0xe/0x170 [ 55.855593][ T6746] ? __brelse+0x84/0xa0 [ 55.859743][ T6746] ? __ext4_new_inode+0x144/0x57c0 [ 55.864868][ T6746] ext4_getblk+0xad/0x520 [ 55.869184][ T6746] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 55.874890][ T6746] ? ext4_free_inode+0x17e0/0x17e0 [ 55.880000][ T6746] ext4_bread+0x7c/0x380 [ 55.884231][ T6746] ? ext4_getblk+0x520/0x520 [ 55.888829][ T6746] ? dqget+0xff0/0xff0 [ 55.892896][ T6746] ext4_append+0x153/0x360 [ 55.897294][ T6746] ext4_mkdir+0x5e0/0xdf0 [ 55.901739][ T6746] ? ext4_rmdir+0xde0/0xde0 [ 55.906405][ T6746] ? security_inode_permission+0xc4/0xf0 [ 55.912301][ T6746] vfs_mkdir+0x419/0x690 [ 55.916571][ T6746] do_mkdirat+0x21e/0x280 [ 55.920937][ T6746] ? __ia32_sys_mknod+0xb0/0xb0 [ 55.925903][ T6746] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 55.932641][ T6746] ? do_syscall_64+0x21/0x7d0 [ 55.937472][ T6746] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 55.943907][ T6746] do_syscall_64+0xf6/0x7d0 [ 55.948420][ T6746] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 55.954303][ T6746] RIP: 0033:0x7f4e1ff17687 [ 55.958792][ T6746] 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 [ 55.978763][ T6746] RSP: 002b:00007ffd0e043698 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 55.987251][ T6746] RAX: ffffffffffffffda RBX: 000055bcc25d6985 RCX: 00007f4e1ff17687 [ 55.995210][ T6746] RDX: 00007ffd0e043560 RSI: 00000000000001ed RDI: 000055bcc25d6985 [ 56.003356][ T6746] RBP: 00007f4e1ff17680 R08: 0000000000000100 R09: 0000000000000000 [ 56.011730][ T6746] R10: 000055bcc25d6980 R11: 0000000000000246 R12: 00000000000001ed [ 56.019973][ T6746] R13: 00007ffd0e043820 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: [ 57.898058][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 57.907399][ T21] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.913539][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 57.921445][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.931600][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 57.937679][ T21] Call Trace: [ 57.941078][ T21] dump_stack+0x188/0x20d [ 57.945451][ T21] debug_smp_processor_id.cold+0x88/0x9b [ 57.951071][ T21] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.956447][ T21] ? __kmalloc+0x62f/0x7a0 [ 57.960870][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.966876][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.972612][ T21] ext4_ext_map_blocks+0x2044/0x3410 [ 57.977887][ T21] ? ext4_ext_release+0x10/0x10 [ 57.982757][ T21] ? __down_timeout+0x2d0/0x2d0 [ 57.987619][ T21] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.993076][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 57.998534][ T21] ext4_map_blocks+0x4cb/0x1640 [ 58.003426][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.009639][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.015226][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.020756][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.026996][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.032823][ T21] ext4_writepages+0x1ab7/0x3400 [ 58.037904][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.043561][ T21] ? __lock_acquire+0x2224/0x48a0 [ 58.048600][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.054699][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.060891][ T21] ? __ext4_mark_inode_dirty+0x950/0x950 [ 58.068891][ T21] ? do_writepages+0xfa/0x2a0 [ 58.074122][ T21] do_writepages+0xfa/0x2a0 [ 58.078744][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 58.084996][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.090467][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.096013][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.101973][ T21] ? lock_downgrade+0x840/0x840 [ 58.107172][ T21] __writeback_single_inode+0x12a/0x1410 [ 58.112860][ T21] ? _raw_spin_unlock+0x24/0x40 [ 58.117833][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 58.123830][ T21] writeback_sb_inodes+0x515/0xdd0 [ 58.128956][ T21] ? __writeback_single_inode+0x1410/0x1410 [ 58.135052][ T21] __writeback_inodes_wb+0xc3/0x250 [ 58.140375][ T21] wb_writeback+0x910/0xd90 [ 58.145200][ T21] ? print_usage_bug+0x240/0x240 [ 58.150246][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 58.156801][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 58.162812][ T21] ? cpumask_next+0x3c/0x40 [ 58.169041][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 58.176115][ T21] wb_workfn+0xadf/0x10d0 [ 58.180462][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 58.186002][ T21] ? debug_smp_processor_id+0x2f/0x185 [ 58.191825][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.197645][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.203904][ T21] process_one_work+0x965/0x16a0 [ 58.208843][ T21] ? lock_release+0x800/0x800 [ 58.213703][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.219083][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 58.224028][ T21] worker_thread+0x96/0xe10 [ 58.228640][ T21] ? process_one_work+0x16a0/0x16a0 [ 58.233939][ T21] kthread+0x388/0x470 [ 58.238016][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.243717][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.249438][ T21] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.85' (ECDSA) to the list of known hosts. 2020/06/11 23:13:11 fuzzer started 2020/06/11 23:13:12 connecting to host at 10.128.0.26:40699 2020/06/11 23:13:12 checking machine... 2020/06/11 23:13:12 checking revisions... 2020/06/11 23:13:12 testing simple program... [ 61.125854][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6817 [ 61.135079][ T6817] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.141206][ T6817] CPU: 0 PID: 6817 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 61.149115][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.159188][ T6817] Call Trace: [ 61.162574][ T6817] dump_stack+0x188/0x20d [ 61.166925][ T6817] debug_smp_processor_id.cold+0x88/0x9b [ 61.172651][ T6817] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.177855][ T6817] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.183372][ T6817] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.189113][ T6817] ext4_ext_map_blocks+0x2044/0x3410 [ 61.194393][ T6817] ? ext4_ext_release+0x10/0x10 [ 61.199418][ T6817] ? __down_timeout+0x2d0/0x2d0 [ 61.204285][ T6817] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.209904][ T6817] ext4_map_blocks+0x4cb/0x1640 [ 61.214831][ T6817] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.220131][ T6817] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.226703][ T6817] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.232882][ T6817] ? prandom_u32_state+0xe/0x170 [ 61.238066][ T6817] ? __brelse+0x84/0xa0 [ 61.242301][ T6817] ? __ext4_new_inode+0x144/0x57c0 [ 61.247719][ T6817] ext4_getblk+0xad/0x520 [ 61.252046][ T6817] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.257857][ T6817] ? ext4_free_inode+0x17e0/0x17e0 [ 61.263265][ T6817] ext4_bread+0x7c/0x380 [ 61.267566][ T6817] ? ext4_getblk+0x520/0x520 [ 61.272199][ T6817] ? dqget+0xff0/0xff0 [ 61.276257][ T6817] ext4_append+0x153/0x360 [ 61.280665][ T6817] ext4_mkdir+0x5e0/0xdf0 [ 61.284985][ T6817] ? ext4_rmdir+0xde0/0xde0 [ 61.289736][ T6817] ? security_inode_permission+0xc4/0xf0 [ 61.295494][ T6817] vfs_mkdir+0x419/0x690 [ 61.300372][ T6817] do_mkdirat+0x21e/0x280 [ 61.304710][ T6817] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.309570][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.315555][ T6817] ? do_syscall_64+0x21/0x7d0 [ 61.321066][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.327040][ T6817] do_syscall_64+0xf6/0x7d0 [ 61.332265][ T6817] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.339636][ T6817] RIP: 0033:0x4b02a0 [ 61.343654][ 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 [ 61.364599][ T6817] RSP: 002b:000000c0000e14b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 61.373095][ T6817] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 61.381461][ T6817] RDX: 00000000000001c0 RSI: 000000c000026aa0 RDI: ffffffffffffff9c [ 61.390231][ T6817] RBP: 000000c0000e1510 R08: 0000000000000000 R09: 0000000000000000 [ 61.398647][ T6817] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 61.407320][ T6817] R13: 0000000000000056 R14: 0000000000000055 R15: 0000000000000100 [ 61.430974][ T6834] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6834 [ 61.440888][ T6834] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.446770][ T6834] CPU: 1 PID: 6834 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.455563][ T6834] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.465692][ T6834] Call Trace: [ 61.468994][ T6834] dump_stack+0x188/0x20d [ 61.473343][ T6834] debug_smp_processor_id.cold+0x88/0x9b [ 61.479084][ T6834] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.484497][ T6834] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.490159][ T6834] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.495888][ T6834] ext4_ext_map_blocks+0x2044/0x3410 [ 61.501190][ T6834] ? ext4_ext_release+0x10/0x10 [ 61.506033][ T6834] ? __down_timeout+0x2d0/0x2d0 [ 61.510865][ T6834] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.516328][ T6834] ext4_map_blocks+0x4cb/0x1640 [ 61.521191][ T6834] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.526399][ T6834] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.532037][ T6834] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.538255][ T6834] ? prandom_u32_state+0xe/0x170 [ 61.543214][ T6834] ? __brelse+0x84/0xa0 [ 61.547365][ T6834] ? __ext4_new_inode+0x144/0x57c0 [ 61.552476][ T6834] ext4_getblk+0xad/0x520 [ 61.556805][ T6834] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.562534][ T6834] ? ext4_free_inode+0x17e0/0x17e0 [ 61.567840][ T6834] ext4_bread+0x7c/0x380 [ 61.572075][ T6834] ? ext4_getblk+0x520/0x520 [ 61.576666][ T6834] ? dqget+0xff0/0xff0 [ 61.580730][ T6834] ext4_append+0x153/0x360 [ 61.585135][ T6834] ext4_mkdir+0x5e0/0xdf0 [ 61.589470][ T6834] ? ext4_rmdir+0xde0/0xde0 [ 61.593979][ T6834] ? security_inode_permission+0xc4/0xf0 [ 61.599700][ T6834] vfs_mkdir+0x419/0x690 [ 61.603930][ T6834] do_mkdirat+0x21e/0x280 [ 61.608264][ T6834] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.613113][ T6834] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.619078][ T6834] ? do_syscall_64+0x21/0x7d0 [ 61.623758][ T6834] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.629854][ T6834] do_syscall_64+0xf6/0x7d0 [ 61.634364][ T6834] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 61.640242][ T6834] RIP: 0033:0x45bee7 [ 61.644165][ T6834] 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 [ 61.663926][ T6834] RSP: 002b:00007ffc4e46d7d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 61.673499][ T6834] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 61.681460][ T6834] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc4e46d9b0 [ 61.689412][ T6834] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003440 [ 61.697368][ T6834] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.705469][ T6834] R13: 00007ffc4e46d9b0 R14: 8421084210842109 R15: 00007ffc4e46d9bc [ 61.808261][ T6835] IPVS: ftp: loaded support on port[0] = 21 [ 61.848005][ T6835] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6835 [ 61.857601][ T6835] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 61.863685][ T6835] CPU: 0 PID: 6835 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.871930][ T6835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.882098][ T6835] Call Trace: [ 61.885381][ T6835] dump_stack+0x188/0x20d [ 61.891842][ T6835] debug_smp_processor_id.cold+0x88/0x9b [ 61.897473][ T6835] ext4_mb_new_blocks+0xa77/0x3b30 [ 61.902587][ T6835] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.908770][ T6835] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.917868][ T6835] ext4_ext_map_blocks+0x2044/0x3410 [ 61.924140][ T6835] ? ext4_ext_release+0x10/0x10 [ 61.931758][ T6835] ? __down_timeout+0x2d0/0x2d0 [ 61.939092][ T6835] ? ext4_es_lookup_extent+0x41d/0xd30 [ 61.944792][ T6835] ext4_map_blocks+0x4cb/0x1640 [ 61.949658][ T6835] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.955607][ T6835] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.961175][ T6835] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.967151][ T6835] ? prandom_u32_state+0xe/0x170 [ 61.972549][ T6835] ? __brelse+0x84/0xa0 [ 61.976720][ T6835] ? __ext4_new_inode+0x144/0x57c0 [ 61.981929][ T6835] ext4_getblk+0xad/0x520 [ 61.986243][ T6835] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.992063][ T6835] ? ext4_free_inode+0x17e0/0x17e0 [ 61.997299][ T6835] ext4_bread+0x7c/0x380 [ 62.001542][ T6835] ? ext4_getblk+0x520/0x520 [ 62.006139][ T6835] ? dqget+0xff0/0xff0 [ 62.010194][ T6835] ext4_append+0x153/0x360 [ 62.014625][ T6835] ext4_mkdir+0x5e0/0xdf0 [ 62.019142][ T6835] ? ext4_rmdir+0xde0/0xde0 [ 62.023639][ T6835] ? security_inode_permission+0xc4/0xf0 [ 62.029595][ T6835] vfs_mkdir+0x419/0x690 [ 62.035182][ T6835] do_mkdirat+0x21e/0x280 [ 62.039797][ T6835] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.045047][ T6835] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.052680][ T6835] ? do_syscall_64+0x21/0x7d0 [ 62.057539][ T6835] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.064026][ T6835] do_syscall_64+0xf6/0x7d0 [ 62.068715][ T6835] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.074699][ T6835] RIP: 0033:0x45bee7 [ 62.078581][ T6835] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.098450][ T6835] RSP: 002b:00007ffc4e46d6c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 62.107134][ T6835] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 62.115085][ T6835] RDX: 00007ffc4e46d713 RSI: 00000000000001ff RDI: 00007ffc4e46d710 [ 62.123061][ T6835] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 62.131202][ T6835] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 62.139169][ T6835] R13: 00007ffc4e46d700 R14: 0000000000000000 R15: 00007ffc4e46d710 [ 62.209335][ T6835] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6835 [ 62.218959][ T6835] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 62.225012][ T6835] CPU: 0 PID: 6835 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.233598][ T6835] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.243675][ T6835] Call Trace: [ 62.247096][ T6835] dump_stack+0x188/0x20d [ 62.251589][ T6835] debug_smp_processor_id.cold+0x88/0x9b [ 62.259863][ T6835] ext4_mb_new_blocks+0xa77/0x3b30 [ 62.265082][ T6835] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.270566][ T6835] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.276434][ T6835] ext4_ext_map_blocks+0x2044/0x3410 [ 62.282069][ T6835] ? ext4_ext_release+0x10/0x10 [ 62.287416][ T6835] ? __down_timeout+0x2d0/0x2d0 [ 62.292268][ T6835] ? ext4_es_lookup_extent+0x41d/0xd30 [ 62.297803][ T6835] ext4_map_blocks+0x4cb/0x1640 [ 62.302912][ T6835] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.308098][ T6835] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.313827][ T6835] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.319823][ T6835] ? prandom_u32_state+0xe/0x170 [ 62.324842][ T6835] ? __brelse+0x84/0xa0 [ 62.328982][ T6835] ? __ext4_new_inode+0x144/0x57c0 [ 62.334076][ T6835] ext4_getblk+0xad/0x520 [ 62.338492][ T6835] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.344298][ T6835] ? ext4_free_inode+0x17e0/0x17e0 [ 62.349414][ T6835] ext4_bread+0x7c/0x380 [ 62.353653][ T6835] ? ext4_getblk+0x520/0x520 [ 62.358590][ T6835] ? dqget+0xff0/0xff0 [ 62.363151][ T6835] ext4_append+0x153/0x360 [ 62.367759][ T6835] ext4_mkdir+0x5e0/0xdf0 [ 62.372214][ T6835] ? ext4_rmdir+0xde0/0xde0 [ 62.376735][ T6835] ? security_inode_permission+0xc4/0xf0 [ 62.382547][ T6835] vfs_mkdir+0x419/0x690 [ 62.391137][ T6835] do_mkdirat+0x21e/0x280 [ 62.395454][ T6835] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.400664][ T6835] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.407024][ T6835] ? do_syscall_64+0x21/0x7d0 [ 62.411701][ T6835] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.417707][ T6835] do_syscall_64+0xf6/0x7d0 [ 62.422230][ T6835] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 62.428176][ T6835] RIP: 0033:0x45bee7 [ 62.432066][ T6835] Code: 1f 40 00 b8 5a 00 00 00 0f 05 48 3d 01 f0 ff ff 0f 83 7d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 b8 53 00 00 00 0f 05 <48> 3d 01 f0 ff ff 0f 83 5d c2 fb ff c3 66 2e 0f 1f 84 00 00 00 00 [ 62.451926][ T6835] RSP: 002b:00007ffc4e46d6c8 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 2020/06/11 23:13:13 building call list... [ 62.460516][ T6835] RAX: ffffffffffffffda RBX: 000000000000f2ee RCX: 000000000045bee7 [ 62.469251][ T6835] RDX: 00007ffc4e46d713 RSI: 00000000000001ff RDI: 00007ffc4e46d710 [ 62.478534][ T6835] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 62.487256][ T6835] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 62.496414][ T6835] R13: 00007ffc4e46d700 R14: 000000000000f2dd R15: 00007ffc4e46d710 [ 62.766875][ T21] tipc: TX() has been purged, node left! executing program [ 64.230422][ T6829] can: request_module (can-proto-0) failed. [ 64.807697][ T6829] can: request_module (can-proto-0) failed. [ 64.819371][ T6829] can: request_module (can-proto-0) failed.