[ 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... [ 51.919260][ T6731] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6731 [ 51.929017][ T6731] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 51.935467][ T6731] CPU: 1 PID: 6731 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 51.943705][ T6731] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 51.953758][ T6731] Call Trace: [ 51.957051][ T6731] dump_stack+0x188/0x20d [ 51.961388][ T6731] debug_smp_processor_id.cold+0x88/0x9b [ 51.967025][ T6731] ext4_mb_new_blocks+0xa77/0x3b30 [ 51.972150][ T6731] ? ext4_ext_search_right+0x2ca/0xb20 [ 51.977614][ T6731] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 51.983582][ T6731] ext4_ext_map_blocks+0x2044/0x3410 [ 51.983607][ T6731] ? ext4_ext_release+0x10/0x10 [ 51.983640][ T6731] ? __down_timeout+0x2d0/0x2d0 [ 51.983654][ T6731] ? ext4_es_lookup_extent+0x41d/0xd30 [ 51.983676][ T6731] ext4_map_blocks+0x4cb/0x1640 [ 51.983697][ T6731] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 51.983712][ T6731] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 51.983728][ T6731] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 51.983743][ T6731] ? prandom_u32_state+0xe/0x170 [ 51.983761][ T6731] ? __brelse+0x84/0xa0 [ 51.983774][ T6731] ? __ext4_new_inode+0x144/0x57c0 [ 51.983794][ T6731] ext4_getblk+0xad/0x520 [ 51.983811][ T6731] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 51.983832][ T6731] ? ext4_free_inode+0x17e0/0x17e0 [ 51.983849][ T6731] ext4_bread+0x7c/0x380 [ 51.983863][ T6731] ? ext4_getblk+0x520/0x520 [ 51.983877][ T6731] ? dqget+0xff0/0xff0 [ 51.983899][ T6731] ext4_append+0x153/0x360 [ 51.983919][ T6731] ext4_mkdir+0x5e0/0xdf0 [ 51.983941][ T6731] ? ext4_rmdir+0xde0/0xde0 [ 51.983961][ T6731] ? security_inode_permission+0xc4/0xf0 [ 51.983991][ T6731] vfs_mkdir+0x419/0x690 [ 51.984010][ T6731] do_mkdirat+0x21e/0x280 [ 51.984027][ T6731] ? __ia32_sys_mknod+0xb0/0xb0 [ 51.984042][ T6731] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 51.984058][ T6731] ? do_syscall_64+0x21/0x7d0 [ 51.984073][ T6731] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 51.984092][ T6731] do_syscall_64+0xf6/0x7d0 [ 51.984111][ T6731] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 51.984122][ T6731] RIP: 0033:0x7f51934a2687 [ 51.984136][ T6731] 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 [ 51.984143][ T6731] RSP: 002b:00007ffe74f5a488 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 51.984156][ T6731] RAX: ffffffffffffffda RBX: 000055e735c81985 RCX: 00007f51934a2687 [ 51.984165][ T6731] RDX: 00007ffe74f5a350 RSI: 00000000000001ed RDI: 000055e735c81985 [ 51.984172][ T6731] RBP: 00007f51934a2680 R08: 0000000000000100 R09: 0000000000000000 [ 51.984180][ T6731] R10: 000055e735c81980 R11: 0000000000000246 R12: 00000000000001ed [ 51.984189][ T6731] R13: 00007ffe74f5a610 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: [ 54.941741][ T7] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:0/7 [ 54.950725][ T7] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 54.956708][ T7] CPU: 1 PID: 7 Comm: kworker/u4:0 Not tainted 5.7.0-syzkaller #0 [ 54.964513][ T7] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.974573][ T7] Workqueue: writeback wb_workfn (flush-8:0) [ 54.980550][ T7] Call Trace: [ 54.983836][ T7] dump_stack+0x188/0x20d [ 54.988163][ T7] debug_smp_processor_id.cold+0x88/0x9b [ 54.993785][ T7] ext4_mb_new_blocks+0xa77/0x3b30 [ 54.998886][ T7] ? __kmalloc+0x62f/0x7a0 [ 55.003300][ T7] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.008739][ T7] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.014468][ T7] ext4_ext_map_blocks+0x2044/0x3410 [ 55.019736][ T7] ? ext4_ext_release+0x10/0x10 [ 55.024585][ T7] ? __down_timeout+0x2d0/0x2d0 [ 55.029410][ T7] ? ext4_es_lookup_extent+0x41d/0xd30 [ 55.035120][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 55.040555][ T7] ext4_map_blocks+0x4cb/0x1640 [ 55.045390][ T7] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.050575][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 55.056016][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.061551][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.067503][ T7] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.072937][ T7] ext4_writepages+0x1ab7/0x3400 [ 55.077865][ T7] ? __ext4_mark_inode_dirty+0x950/0x950 [ 55.083532][ T7] ? __lock_acquire+0x2224/0x48a0 [ 55.088566][ T7] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.094538][ T7] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.100624][ T7] ? __ext4_mark_inode_dirty+0x950/0x950 [ 55.106236][ T7] ? do_writepages+0xfa/0x2a0 [ 55.110900][ T7] do_writepages+0xfa/0x2a0 [ 55.115394][ T7] ? page_writeback_cpu_online+0x10/0x10 [ 55.121011][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 55.126466][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.131992][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.137978][ T7] ? lock_downgrade+0x840/0x840 [ 55.142820][ T7] __writeback_single_inode+0x12a/0x1410 [ 55.148461][ T7] ? _raw_spin_unlock+0x24/0x40 [ 55.153299][ T7] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 55.159272][ T7] writeback_sb_inodes+0x515/0xdd0 [ 55.164403][ T7] ? __writeback_single_inode+0x1410/0x1410 [ 55.170297][ T7] __writeback_inodes_wb+0xc3/0x250 [ 55.183633][ T7] wb_writeback+0x910/0xd90 [ 55.188132][ T7] ? print_usage_bug+0x240/0x240 [ 55.193060][ T7] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 55.199369][ T7] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 55.205254][ T7] ? cpumask_next+0x3c/0x40 [ 55.209926][ T7] ? get_nr_dirty_inodes+0xd6/0x130 [ 55.215104][ T7] wb_workfn+0xadf/0x10d0 [ 55.219414][ T7] ? inode_wait_for_writeback+0x30/0x30 [ 55.225040][ T7] ? debug_smp_processor_id+0x2f/0x185 [ 55.230480][ T7] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.236015][ T7] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.241975][ T7] process_one_work+0x965/0x16a0 [ 55.246902][ T7] ? lock_release+0x800/0x800 [ 55.251825][ T7] ? pwq_dec_nr_in_flight+0x310/0x310 [ 55.257181][ T7] ? rwlock_bug.part.0+0x90/0x90 [ 55.262112][ T7] worker_thread+0x96/0xe10 [ 55.266596][ T7] ? process_one_work+0x16a0/0x16a0 [ 55.271777][ T7] kthread+0x388/0x470 [ 55.275818][ T7] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.281884][ T7] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 55.287598][ T7] ret_from_fork+0x24/0x30 Warning: Permanently added '10.128.0.76' (ECDSA) to the list of known hosts. 2020/06/11 11:16:09 fuzzer started 2020/06/11 11:16:09 connecting to host at 10.128.0.26:45351 2020/06/11 11:16:09 checking machine... 2020/06/11 11:16:09 checking revisions... 2020/06/11 11:16:09 testing simple program... [ 56.810136][ T6798] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6798 [ 56.819341][ T6798] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 56.825580][ T6798] CPU: 0 PID: 6798 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 56.833491][ T6798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.843528][ T6798] Call Trace: [ 56.846820][ T6798] dump_stack+0x188/0x20d [ 56.851131][ T6798] debug_smp_processor_id.cold+0x88/0x9b [ 56.856767][ T6798] ext4_mb_new_blocks+0xa77/0x3b30 [ 56.861865][ T6798] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.867301][ T6798] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.872998][ T6798] ext4_ext_map_blocks+0x2044/0x3410 [ 56.878261][ T6798] ? ext4_ext_release+0x10/0x10 [ 56.883163][ T6798] ? __down_timeout+0x2d0/0x2d0 [ 56.888001][ T6798] ? ext4_es_lookup_extent+0x41d/0xd30 [ 56.893453][ T6798] ext4_map_blocks+0x4cb/0x1640 [ 56.898305][ T6798] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.903483][ T6798] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.909000][ T6798] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.914956][ T6798] ? prandom_u32_state+0xe/0x170 [ 56.919883][ T6798] ? __brelse+0x84/0xa0 [ 56.924125][ T6798] ? __ext4_new_inode+0x144/0x57c0 [ 56.929213][ T6798] ext4_getblk+0xad/0x520 [ 56.933522][ T6798] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 56.939230][ T6798] ? ext4_free_inode+0x17e0/0x17e0 [ 56.944318][ T6798] ext4_bread+0x7c/0x380 [ 56.948535][ T6798] ? ext4_getblk+0x520/0x520 [ 56.953106][ T6798] ? dqget+0xff0/0xff0 [ 56.957153][ T6798] ext4_append+0x153/0x360 [ 56.961549][ T6798] ext4_mkdir+0x5e0/0xdf0 [ 56.965878][ T6798] ? ext4_rmdir+0xde0/0xde0 [ 56.970401][ T6798] ? security_inode_permission+0xc4/0xf0 [ 56.976805][ T6798] vfs_mkdir+0x419/0x690 [ 56.981084][ T6798] do_mkdirat+0x21e/0x280 [ 56.985411][ T6798] ? __ia32_sys_mknod+0xb0/0xb0 [ 56.990275][ T6798] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 56.996250][ T6798] ? do_syscall_64+0x21/0x7d0 [ 57.000906][ T6798] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.006872][ T6798] do_syscall_64+0xf6/0x7d0 [ 57.011361][ T6798] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.017232][ T6798] RIP: 0033:0x4b02a0 [ 57.021106][ T6798] 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 [ 57.041492][ T6798] RSP: 002b:000000c0000cb4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 57.049893][ T6798] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 57.057857][ T6798] RDX: 00000000000001c0 RSI: 000000c0000d0c60 RDI: ffffffffffffff9c [ 57.065832][ T6798] RBP: 000000c0000cb510 R08: 0000000000000000 R09: 0000000000000000 [ 57.073806][ T6798] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 57.081777][ T6798] R13: 0000000000000064 R14: 0000000000000063 R15: 0000000000000100 [ 57.113932][ T6813] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6813 [ 57.123538][ T6813] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.129532][ T6813] CPU: 1 PID: 6813 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 57.137759][ T6813] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.147813][ T6813] Call Trace: [ 57.151113][ T6813] dump_stack+0x188/0x20d [ 57.155447][ T6813] debug_smp_processor_id.cold+0x88/0x9b [ 57.161083][ T6813] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.166198][ T6813] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.171644][ T6813] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.177348][ T6813] ext4_ext_map_blocks+0x2044/0x3410 [ 57.183412][ T6813] ? ext4_ext_release+0x10/0x10 [ 57.188429][ T6813] ? __down_timeout+0x2d0/0x2d0 [ 57.193256][ T6813] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.198782][ T6813] ext4_map_blocks+0x4cb/0x1640 [ 57.203630][ T6813] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.208827][ T6813] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.214364][ T6813] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.220532][ T6813] ? prandom_u32_state+0xe/0x170 [ 57.225565][ T6813] ? __brelse+0x84/0xa0 [ 57.229715][ T6813] ? __ext4_new_inode+0x144/0x57c0 [ 57.235154][ T6813] ext4_getblk+0xad/0x520 [ 57.239464][ T6813] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.245182][ T6813] ? ext4_free_inode+0x17e0/0x17e0 [ 57.250291][ T6813] ext4_bread+0x7c/0x380 [ 57.258787][ T6813] ? ext4_getblk+0x520/0x520 [ 57.263371][ T6813] ? dqget+0xff0/0xff0 [ 57.267426][ T6813] ext4_append+0x153/0x360 [ 57.271824][ T6813] ext4_mkdir+0x5e0/0xdf0 [ 57.276236][ T6813] ? ext4_rmdir+0xde0/0xde0 [ 57.280745][ T6813] ? security_inode_permission+0xc4/0xf0 [ 57.286452][ T6813] vfs_mkdir+0x419/0x690 [ 57.290686][ T6813] do_mkdirat+0x21e/0x280 [ 57.294998][ T6813] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.299828][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.305791][ T6813] ? do_syscall_64+0x21/0x7d0 [ 57.310452][ T6813] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.316508][ T6813] do_syscall_64+0xf6/0x7d0 [ 57.320994][ T6813] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.326866][ T6813] RIP: 0033:0x45bee7 [ 57.331001][ T6813] 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 [ 57.350686][ T6813] RSP: 002b:00007ffde02275e8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 57.359102][ T6813] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 57.367311][ T6813] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffde02277c0 [ 57.375261][ T6813] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000027c0 [ 57.383213][ T6813] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 57.391162][ T6813] R13: 00007ffde02277c0 R14: 8421084210842109 R15: 00007ffde02277cc [ 57.472712][ T6814] IPVS: ftp: loaded support on port[0] = 21 [ 57.509568][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 57.519250][ T6814] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.525193][ T6814] CPU: 0 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 57.533424][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.543470][ T6814] Call Trace: [ 57.546761][ T6814] dump_stack+0x188/0x20d [ 57.551083][ T6814] debug_smp_processor_id.cold+0x88/0x9b [ 57.556886][ T6814] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.561983][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.567425][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.573131][ T6814] ext4_ext_map_blocks+0x2044/0x3410 [ 57.578405][ T6814] ? ext4_ext_release+0x10/0x10 [ 57.583264][ T6814] ? __down_timeout+0x2d0/0x2d0 [ 57.588098][ T6814] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.593557][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 57.598474][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.603670][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.609540][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.615599][ T6814] ? prandom_u32_state+0xe/0x170 [ 57.620517][ T6814] ? __brelse+0x84/0xa0 [ 57.624650][ T6814] ? __ext4_new_inode+0x144/0x57c0 [ 57.629738][ T6814] ext4_getblk+0xad/0x520 [ 57.634059][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.639775][ T6814] ? ext4_free_inode+0x17e0/0x17e0 [ 57.644869][ T6814] ext4_bread+0x7c/0x380 [ 57.649089][ T6814] ? ext4_getblk+0x520/0x520 [ 57.653673][ T6814] ? dqget+0xff0/0xff0 [ 57.657721][ T6814] ext4_append+0x153/0x360 [ 57.662119][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 57.666446][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 57.670958][ T6814] ? security_inode_permission+0xc4/0xf0 [ 57.676569][ T6814] vfs_mkdir+0x419/0x690 [ 57.680792][ T6814] do_mkdirat+0x21e/0x280 [ 57.685099][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 57.689955][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.696207][ T6814] ? do_syscall_64+0x21/0x7d0 [ 57.700979][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 57.706948][ T6814] do_syscall_64+0xf6/0x7d0 [ 57.711528][ T6814] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 57.717574][ T6814] RIP: 0033:0x45bee7 [ 57.721576][ T6814] 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 [ 57.743514][ T6814] RSP: 002b:00007ffde02274d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 57.751920][ T6814] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 57.760736][ T6814] RDX: 00007ffde0227523 RSI: 00000000000001ff RDI: 00007ffde0227520 [ 57.769135][ T6814] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 57.777401][ T6814] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 57.785550][ T6814] R13: 00007ffde0227510 R14: 0000000000000000 R15: 00007ffde0227520 [ 57.839377][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 57.848991][ T6814] caller is ext4_mb_new_blocks+0xa77/0x3b30 [ 57.854979][ T6814] CPU: 1 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 57.863223][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.873379][ T6814] Call Trace: [ 57.876671][ T6814] dump_stack+0x188/0x20d [ 57.881208][ T6814] debug_smp_processor_id.cold+0x88/0x9b [ 57.886838][ T6814] ext4_mb_new_blocks+0xa77/0x3b30 [ 57.891959][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.897407][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.903108][ T6814] ext4_ext_map_blocks+0x2044/0x3410 [ 57.908373][ T6814] ? ext4_ext_release+0x10/0x10 [ 57.913208][ T6814] ? __down_timeout+0x2d0/0x2d0 [ 57.918043][ T6814] ? ext4_es_lookup_extent+0x41d/0xd30 [ 57.923482][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 57.928324][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.933511][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.939030][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.945022][ T6814] ? prandom_u32_state+0xe/0x170 [ 57.950044][ T6814] ? __brelse+0x84/0xa0 [ 57.954193][ T6814] ? __ext4_new_inode+0x144/0x57c0 [ 57.959315][ T6814] ext4_getblk+0xad/0x520 [ 57.963721][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 57.969428][ T6814] ? ext4_free_inode+0x17e0/0x17e0 [ 57.974790][ T6814] ext4_bread+0x7c/0x380 [ 57.979018][ T6814] ? ext4_getblk+0x520/0x520 [ 57.983596][ T6814] ? dqget+0xff0/0xff0 [ 57.987665][ T6814] ext4_append+0x153/0x360 [ 57.992068][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 57.996374][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 58.000877][ T6814] ? security_inode_permission+0xc4/0xf0 [ 58.006487][ T6814] vfs_mkdir+0x419/0x690 [ 58.010707][ T6814] do_mkdirat+0x21e/0x280 [ 58.015033][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.020052][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.026460][ T6814] ? do_syscall_64+0x21/0x7d0 [ 58.031215][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.037183][ T6814] do_syscall_64+0xf6/0x7d0 [ 58.041667][ T6814] entry_SYSCALL_64_after_hwframe+0x49/0xb3 [ 58.047541][ T6814] RIP: 0033:0x45bee7 [ 58.051418][ T6814] 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 [ 58.070995][ T6814] RSP: 002b:00007ffde02274d8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 58.079391][ T6814] RAX: ffffffffffffffda RBX: 000000000000e1d2 RCX: 000000000045bee7 2020/06/11 11:16:11 building call list... [ 58.087340][ T6814] RDX: 00007ffde0227523 RSI: 00000000000001ff RDI: 00007ffde0227520 [ 58.095287][ T6814] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 58.103242][ T6814] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 58.111200][ T6814] R13: 00007ffde0227510 R14: 000000000000e1ce R15: 00007ffde0227520 [ 58.440525][ T21] tipc: TX() has been purged, node left! executing program [ 59.706030][ T6795] can: request_module (can-proto-0) failed. [ 60.354563][ T6795] can: request_module (can-proto-0) failed. [ 60.365682][ T6795] can: request_module (can-proto-0) failed.