Starting Load/Save RF Kill Switch Status... [ 53.233699][ T6736] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6736 [ 53.243126][ T6736] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.249088][ T6736] CPU: 1 PID: 6736 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 53.257315][ T6736] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.267346][ T6736] Call Trace: [ 53.270617][ T6736] dump_stack+0x18f/0x20d [ 53.275290][ T6736] check_preemption_disabled+0x20d/0x220 [ 53.280899][ T6736] ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.285996][ T6736] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.291434][ T6736] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.297151][ T6736] ext4_ext_map_blocks+0x201b/0x33e0 [ 53.302430][ T6736] ? ext4_ext_release+0x10/0x10 [ 53.307277][ T6736] ? down_write_killable+0x170/0x170 [ 53.312547][ T6736] ? ext4_es_lookup_extent+0x41d/0xd10 [ 53.317982][ T6736] ext4_map_blocks+0x4cb/0x1640 [ 53.322813][ T6736] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.327984][ T6736] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.333510][ T6736] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.339464][ T6736] ? prandom_u32_state+0xe/0x170 [ 53.344379][ T6736] ? __brelse+0x84/0xa0 [ 53.348511][ T6736] ? __ext4_new_inode+0x144/0x55e0 [ 53.353599][ T6736] ext4_getblk+0xad/0x520 [ 53.357905][ T6736] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 53.363602][ T6736] ? ext4_free_inode+0x1700/0x1700 [ 53.368688][ T6736] ext4_bread+0x7c/0x380 [ 53.372908][ T6736] ? ext4_getblk+0x520/0x520 [ 53.377484][ T6736] ? dquot_get_next_dqblk+0x180/0x180 [ 53.382836][ T6736] ext4_append+0x153/0x360 [ 53.387501][ T6736] ext4_mkdir+0x5e0/0xdf0 [ 53.391807][ T6736] ? ext4_rmdir+0xde0/0xde0 [ 53.396299][ T6736] ? security_inode_permission+0xc4/0xf0 [ 53.401922][ T6736] vfs_mkdir+0x419/0x690 [ 53.406152][ T6736] do_mkdirat+0x21e/0x280 [ 53.410457][ T6736] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.415298][ T6736] ? do_syscall_64+0x1c/0xe0 [ 53.419867][ T6736] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.425822][ T6736] do_syscall_64+0x60/0xe0 [ 53.430218][ T6736] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.436084][ T6736] RIP: 0033:0x7fb4054d0687 [ 53.440468][ T6736] Code: Bad RIP value. [ 53.444507][ T6736] RSP: 002b:00007ffd7e42eaf8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.452890][ T6736] RAX: ffffffffffffffda RBX: 000055add0be7985 RCX: 00007fb4054d0687 [ 53.460836][ T6736] RDX: 00007ffd7e42e9c0 RSI: 00000000000001ed RDI: 000055add0be7985 [ 53.468783][ T6736] RBP: 00007fb4054d0680 R08: 0000000000000100 R09: 0000000000000000 [ 53.476733][ T6736] R10: 000055add0be7980 R11: 0000000000000246 R12: 00000000000001ed [ 53.484680][ T6736] R13: 00007ffd7e42ec80 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.911400][ T40] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/40 [ 56.920428][ T40] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.926453][ T40] CPU: 0 PID: 40 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 56.934360][ T40] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.944406][ T40] Workqueue: writeback wb_workfn (flush-8:0) [ 56.950365][ T40] Call Trace: [ 56.953640][ T40] dump_stack+0x18f/0x20d [ 56.957958][ T40] check_preemption_disabled+0x20d/0x220 [ 56.963718][ T40] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.968814][ T40] ? ext4_find_extent+0x81a/0xad0 [ 56.973824][ T40] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.979262][ T40] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.985003][ T40] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.990274][ T40] ? ext4_ext_release+0x10/0x10 [ 56.995114][ T40] ? down_write_killable+0x170/0x170 [ 57.000373][ T40] ? ext4_es_lookup_extent+0x41d/0xd10 [ 57.005857][ T40] ext4_map_blocks+0x4cb/0x1640 [ 57.010687][ T40] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.015868][ T40] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.021390][ T40] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.027344][ T40] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.032827][ T40] ext4_writepages+0x1a7b/0x33c0 [ 57.037753][ T40] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.043370][ T40] ? __lock_acquire+0x2224/0x48b0 [ 57.048376][ T40] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.054334][ T40] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.060300][ T40] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.066167][ T40] ? do_writepages+0xfa/0x2a0 [ 57.070831][ T40] do_writepages+0xfa/0x2a0 [ 57.075314][ T40] ? page_writeback_cpu_online+0x10/0x10 [ 57.080926][ T40] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.086454][ T40] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.092407][ T40] ? lock_downgrade+0x840/0x840 [ 57.097304][ T40] __writeback_single_inode+0x12a/0x13d0 [ 57.102971][ T40] ? _raw_spin_unlock+0x24/0x40 [ 57.107809][ T40] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.113770][ T40] writeback_sb_inodes+0x515/0xdc0 [ 57.118867][ T40] ? __writeback_single_inode+0x13d0/0x13d0 [ 57.124876][ T40] __writeback_inodes_wb+0xc3/0x250 [ 57.130095][ T40] wb_writeback+0x8db/0xd50 [ 57.134622][ T40] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.140951][ T40] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.146834][ T40] ? cpumask_next+0x3c/0x40 [ 57.151316][ T40] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.156493][ T40] wb_workfn+0xab3/0x1090 [ 57.160803][ T40] ? inode_wait_for_writeback+0x30/0x30 [ 57.166329][ T40] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.171870][ T40] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.177836][ T40] process_one_work+0x965/0x1690 [ 57.182805][ T40] ? lock_release+0x800/0x800 [ 57.187458][ T40] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.192812][ T40] ? rwlock_bug.part.0+0x90/0x90 [ 57.197897][ T40] worker_thread+0x96/0xe10 [ 57.202383][ T40] ? process_one_work+0x1690/0x1690 [ 57.207557][ T40] kthread+0x3b5/0x4a0 [ 57.211604][ T40] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.217297][ T40] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.223000][ T40] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.10.58' (ECDSA) to the list of known hosts. 2020/06/15 13:10:59 fuzzer started 2020/06/15 13:11:00 connecting to host at 10.128.0.26:34815 2020/06/15 13:11:00 checking machine... 2020/06/15 13:11:00 checking revisions... 2020/06/15 13:11:00 testing simple program... [ 58.277141][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 58.286667][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.292662][ T1154] CPU: 0 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 58.300550][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.310606][ T1154] Call Trace: [ 58.313895][ T1154] dump_stack+0x18f/0x20d [ 58.318230][ T1154] check_preemption_disabled+0x20d/0x220 [ 58.323862][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.328973][ T1154] ? ext4_find_extent+0x81a/0xad0 [ 58.334005][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.339463][ T1154] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.345188][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.350481][ T1154] ? ext4_ext_release+0x10/0x10 [ 58.355346][ T1154] ? down_write_killable+0x170/0x170 [ 58.360633][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.366096][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 58.370952][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.376152][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.381702][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.387678][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.393145][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 58.398081][ T1154] ? lock_release+0x7c0/0x800 [ 58.402782][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.408441][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.414071][ T1154] ? do_writepages+0xfa/0x2a0 [ 58.418783][ T1154] do_writepages+0xfa/0x2a0 [ 58.423290][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 58.428917][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 58.433942][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 58.439140][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 58.443991][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 58.450661][ T1154] ? collapse_file+0x35a2/0x4330 [ 58.456485][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 58.462559][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 58.467754][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.473736][ T1154] collapse_file+0x35ac/0x4330 [ 58.478515][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 58.483882][ T1154] ? khugepaged+0x2506/0x3fc0 [ 58.487189][ T6798] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6798 [ 58.488563][ T1154] ? xas_find+0x31a/0x880 [ 58.497638][ T6798] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.501865][ T1154] ? check_preemption_disabled+0x38/0x220 [ 58.501885][ T1154] khugepaged+0x3041/0x3fc0 [ 58.501925][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 58.523539][ T1154] ? lock_downgrade+0x840/0x840 [ 58.528371][ T1154] ? finish_wait+0x260/0x260 [ 58.532965][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 58.538753][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.544719][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 58.549727][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 58.555353][ T1154] kthread+0x3b5/0x4a0 [ 58.559490][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.565188][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.570888][ T1154] ret_from_fork+0x1f/0x30 [ 58.575300][ T6798] CPU: 1 PID: 6798 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.583227][ T6798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.593284][ T6798] Call Trace: [ 58.596585][ T6798] dump_stack+0x18f/0x20d [ 58.600924][ T6798] check_preemption_disabled+0x20d/0x220 [ 58.606559][ T6798] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.611681][ T6798] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.617134][ T6798] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.622866][ T6798] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.628163][ T6798] ? ext4_ext_release+0x10/0x10 [ 58.633037][ T6798] ? down_write_killable+0x170/0x170 [ 58.638321][ T6798] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.643786][ T6798] ext4_map_blocks+0x4cb/0x1640 [ 58.648645][ T6798] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.653844][ T6798] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.659384][ T6798] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.665393][ T6798] ? prandom_u32_state+0xe/0x170 [ 58.670333][ T6798] ? __brelse+0x84/0xa0 [ 58.674489][ T6798] ? __ext4_new_inode+0x144/0x55e0 [ 58.679602][ T6798] ext4_getblk+0xad/0x520 [ 58.683933][ T6798] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.689658][ T6798] ? ext4_free_inode+0x1700/0x1700 [ 58.694774][ T6798] ext4_bread+0x7c/0x380 [ 58.699010][ T6798] ? ext4_getblk+0x520/0x520 [ 58.703578][ T6798] ? dquot_get_next_dqblk+0x180/0x180 [ 58.709005][ T6798] ext4_append+0x153/0x360 [ 58.713403][ T6798] ext4_mkdir+0x5e0/0xdf0 [ 58.717717][ T6798] ? ext4_rmdir+0xde0/0xde0 [ 58.722202][ T6798] ? security_inode_permission+0xc4/0xf0 [ 58.727851][ T6798] vfs_mkdir+0x419/0x690 [ 58.732074][ T6798] do_mkdirat+0x21e/0x280 [ 58.736382][ T6798] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.741208][ T6798] ? do_syscall_64+0x1c/0xe0 [ 58.745818][ T6798] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.751788][ T6798] do_syscall_64+0x60/0xe0 [ 58.756618][ T6798] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.762484][ T6798] RIP: 0033:0x4b02a0 [ 58.766346][ T6798] Code: Bad RIP value. [ 58.770387][ T6798] RSP: 002b:000000c0000cb4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.778771][ T6798] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.786763][ T6798] RDX: 00000000000001c0 RSI: 000000c0003089c0 RDI: ffffffffffffff9c [ 58.794828][ T6798] RBP: 000000c0000cb510 R08: 0000000000000000 R09: 0000000000000000 [ 58.802775][ T6798] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.810719][ T6798] R13: 000000000000004f R14: 000000000000004e R15: 0000000000000100 [ 58.837280][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 58.846724][ T6814] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.853144][ T6814] CPU: 0 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.861362][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.871665][ T6814] Call Trace: [ 58.874951][ T6814] dump_stack+0x18f/0x20d [ 58.879291][ T6814] check_preemption_disabled+0x20d/0x220 [ 58.884905][ T6814] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.890017][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.895463][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.901166][ T6814] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.906437][ T6814] ? ext4_ext_release+0x10/0x10 [ 58.911279][ T6814] ? down_write_killable+0x170/0x170 [ 58.916541][ T6814] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.922002][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 58.926859][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.927387][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 58.932054][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.932073][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.932086][ T6814] ? prandom_u32_state+0xe/0x170 [ 58.932102][ T6814] ? __brelse+0x84/0xa0 [ 58.932116][ T6814] ? __ext4_new_inode+0x144/0x55e0 [ 58.932135][ T6814] ext4_getblk+0xad/0x520 [ 58.932153][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.932174][ T6814] ? ext4_free_inode+0x1700/0x1700 [ 58.932193][ T6814] ext4_bread+0x7c/0x380 [ 58.941246][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.946727][ T6814] ? ext4_getblk+0x520/0x520 [ 58.996527][ T6814] ? dquot_get_next_dqblk+0x180/0x180 [ 59.001889][ T6814] ext4_append+0x153/0x360 [ 59.006295][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 59.010614][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 59.015104][ T6814] ? security_inode_permission+0xc4/0xf0 [ 59.020721][ T6814] vfs_mkdir+0x419/0x690 [ 59.024950][ T6814] do_mkdirat+0x21e/0x280 [ 59.029263][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.034097][ T6814] ? do_syscall_64+0x1c/0xe0 [ 59.038668][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.044630][ T6814] do_syscall_64+0x60/0xe0 [ 59.049029][ T6814] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.054900][ T6814] RIP: 0033:0x45bed7 [ 59.058767][ T6814] Code: Bad RIP value. [ 59.062811][ T6814] RSP: 002b:00007ffd50ab4d68 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.071298][ T6814] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 59.079253][ T6814] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffd50ab4f40 [ 59.087213][ T6814] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003640 [ 59.095163][ T6814] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.103131][ T6814] R13: 00007ffd50ab4f40 R14: 8421084210842109 R15: 00007ffd50ab4f4c [ 59.111124][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.119020][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.129072][ T1154] Call Trace: [ 59.132366][ T1154] dump_stack+0x18f/0x20d [ 59.136842][ T1154] check_preemption_disabled+0x20d/0x220 [ 59.142482][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.147783][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.153339][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.159500][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.164793][ T1154] ? ext4_ext_release+0x10/0x10 [ 59.169663][ T1154] ? down_write_killable+0x170/0x170 [ 59.174947][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.180423][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 59.185281][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.190572][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.196123][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.202101][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.207673][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 59.212613][ T1154] ? lock_release+0x7c0/0x800 [ 59.217305][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.222965][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.228596][ T1154] ? do_writepages+0xfa/0x2a0 [ 59.230498][ T6815] IPVS: ftp: loaded support on port[0] = 21 [ 59.233286][ T1154] do_writepages+0xfa/0x2a0 [ 59.243648][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 59.249290][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 59.254319][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 59.259541][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 59.264396][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.270116][ T1154] ? collapse_file+0x35a2/0x4330 [ 59.275058][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.281143][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.286346][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.292348][ T1154] collapse_file+0x35ac/0x4330 [ 59.295265][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 59.297127][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 59.306505][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.311822][ T1154] ? khugepaged+0x2506/0x3fc0 [ 59.311847][ T1154] ? xas_find+0x31a/0x880 [ 59.311864][ T1154] ? check_preemption_disabled+0x38/0x220 [ 59.311883][ T1154] khugepaged+0x3041/0x3fc0 [ 59.311923][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.342489][ T1154] ? lock_downgrade+0x840/0x840 [ 59.347323][ T1154] ? finish_wait+0x260/0x260 [ 59.351896][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.357682][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.363646][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 59.368660][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.374272][ T1154] kthread+0x3b5/0x4a0 [ 59.378329][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.384026][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.389727][ T1154] ret_from_fork+0x1f/0x30 [ 59.394139][ T6815] CPU: 0 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.402375][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.412424][ T6815] Call Trace: [ 59.415735][ T6815] dump_stack+0x18f/0x20d [ 59.420065][ T6815] check_preemption_disabled+0x20d/0x220 [ 59.425702][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.430832][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.436292][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.438995][ T1154] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1154 [ 59.442017][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.442042][ T6815] ? ext4_ext_release+0x10/0x10 [ 59.442076][ T6815] ? down_write_killable+0x170/0x170 [ 59.442089][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.442111][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 59.442136][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.451208][ T1154] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.456409][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.456427][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.499409][ T6815] ? prandom_u32_state+0xe/0x170 [ 59.504331][ T6815] ? __brelse+0x84/0xa0 [ 59.508468][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 59.513581][ T6815] ext4_getblk+0xad/0x520 [ 59.517893][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.523696][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 59.528793][ T6815] ext4_bread+0x7c/0x380 [ 59.534418][ T6815] ? ext4_getblk+0x520/0x520 [ 59.538993][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 59.544352][ T6815] ext4_append+0x153/0x360 [ 59.548751][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 59.553080][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 59.557568][ T6815] ? security_inode_permission+0xc4/0xf0 [ 59.563187][ T6815] vfs_mkdir+0x419/0x690 [ 59.567414][ T6815] do_mkdirat+0x21e/0x280 [ 59.571738][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.576576][ T6815] ? do_syscall_64+0x1c/0xe0 [ 59.581148][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.587108][ T6815] do_syscall_64+0x60/0xe0 [ 59.591512][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.597394][ T6815] RIP: 0033:0x45bed7 [ 59.601270][ T6815] Code: Bad RIP value. [ 59.605315][ T6815] RSP: 002b:00007ffd50ab4c58 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 59.613703][ T6815] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 59.621656][ T6815] RDX: 00007ffd50ab4ca3 RSI: 00000000000001ff RDI: 00007ffd50ab4ca0 [ 59.629609][ T6815] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 59.637570][ T6815] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185c0 [ 59.645521][ T6815] R13: 00007ffd50ab4c90 R14: 0000000000000000 R15: 00007ffd50ab4ca0 [ 59.653503][ T1154] CPU: 1 PID: 1154 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.661388][ T1154] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.671431][ T1154] Call Trace: [ 59.674727][ T1154] dump_stack+0x18f/0x20d [ 59.679069][ T1154] check_preemption_disabled+0x20d/0x220 [ 59.684737][ T1154] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.689860][ T1154] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.695321][ T1154] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 59.701485][ T1154] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.706779][ T1154] ? ext4_ext_release+0x10/0x10 [ 59.711646][ T1154] ? down_write_killable+0x170/0x170 [ 59.716929][ T1154] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.722249][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 59.722387][ T1154] ext4_map_blocks+0x4cb/0x1640 [ 59.731763][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.736579][ T1154] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.747635][ T1154] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.753167][ T1154] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.759137][ T1154] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.764579][ T1154] ext4_writepages+0x1a7b/0x33c0 [ 59.769499][ T1154] ? lock_release+0x7c0/0x800 [ 59.774179][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.779810][ T1154] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.785423][ T1154] ? do_writepages+0xfa/0x2a0 [ 59.790078][ T1154] do_writepages+0xfa/0x2a0 [ 59.794579][ T1154] ? page_writeback_cpu_online+0x10/0x10 [ 59.800208][ T1154] ? do_raw_spin_lock+0x120/0x2d0 [ 59.805309][ T1154] ? do_raw_spin_unlock+0x171/0x260 [ 59.810488][ T1154] ? _raw_spin_unlock+0x24/0x40 [ 59.815321][ T1154] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.821019][ T1154] ? collapse_file+0x35a2/0x4330 [ 59.825934][ T1154] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.832004][ T1154] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.837196][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.843159][ T1154] collapse_file+0x35ac/0x4330 [ 59.847919][ T1154] ? collapse_huge_page+0x4350/0x4350 [ 59.853271][ T1154] ? khugepaged+0x2506/0x3fc0 [ 59.857936][ T1154] ? xas_find+0x31a/0x880 [ 59.862335][ T1154] ? check_preemption_disabled+0x38/0x220 [ 59.868037][ T1154] khugepaged+0x3041/0x3fc0 [ 59.872539][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.878163][ T1154] ? lock_downgrade+0x840/0x840 [ 59.882995][ T1154] ? finish_wait+0x260/0x260 [ 59.887565][ T1154] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.893350][ T1154] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.899312][ T1154] ? __kthread_parkme+0x13f/0x1e0 [ 59.904317][ T1154] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.910042][ T1154] kthread+0x3b5/0x4a0 [ 59.914089][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.919870][ T1154] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.925688][ T1154] ret_from_fork+0x1f/0x30 [ 59.930119][ T6815] CPU: 0 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.938446][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.948494][ T6815] Call Trace: [ 59.951787][ T6815] dump_stack+0x18f/0x20d [ 59.956124][ T6815] check_preemption_disabled+0x20d/0x220 [ 59.961757][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.966880][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.972340][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.978071][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.983369][ T6815] ? ext4_ext_release+0x10/0x10 [ 59.988240][ T6815] ? down_write_killable+0x170/0x170 [ 59.993524][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.998991][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 60.003850][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.009045][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.014591][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.020572][ T6815] ? prandom_u32_state+0xe/0x170 [ 60.025511][ T6815] ? __brelse+0x84/0xa0 [ 60.029666][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 60.034780][ T6815] ext4_getblk+0xad/0x520 [ 60.039117][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.044840][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 60.049958][ T6815] ext4_bread+0x7c/0x380 [ 60.054200][ T6815] ? ext4_getblk+0x520/0x520 [ 60.058788][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 60.064163][ T6815] ext4_append+0x153/0x360 [ 60.068584][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 60.072924][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 60.077431][ T6815] ? security_inode_permission+0xc4/0xf0 [ 60.083073][ T6815] vfs_mkdir+0x419/0x690 [ 60.087411][ T6815] do_mkdirat+0x21e/0x280 [ 60.091747][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.096597][ T6815] ? do_syscall_64+0x1c/0xe0 [ 60.101187][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.107166][ T6815] do_syscall_64+0x60/0xe0 [ 60.111607][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.117495][ T6815] RIP: 0033:0x45bed7 [ 60.121381][ T6815] Code: Bad RIP value. [ 60.125438][ T6815] RSP: 002b:00007ffd50ab4c58 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 60.134011][ T6815] RAX: ffffffffffffffda RBX: 000000000000e923 RCX: 000000000045bed7 2020/06/15 13:11:02 building call list... [ 60.141990][ T6815] RDX: 00007ffd50ab4ca3 RSI: 00000000000001ff RDI: 00007ffd50ab4ca0 [ 60.149965][ T6815] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.157937][ T6815] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 60.165908][ T6815] R13: 00007ffd50ab4c90 R14: 000000000000e920 R15: 00007ffd50ab4ca0 [ 60.372140][ T40] tipc: TX() has been purged, node left! [ 60.882394][ T40] ================================================================== [ 60.890615][ T40] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 60.898496][ T40] Write of size 1 at addr ffff8880a70451e4 by task kworker/u4:2/40 [ 60.906386][ T40] [ 60.908714][ T40] CPU: 1 PID: 40 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 60.916606][ T40] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.926656][ T40] Workqueue: netns cleanup_net [ 60.931415][ T40] Call Trace: [ 60.934703][ T40] dump_stack+0x18f/0x20d [ 60.939031][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 60.944568][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 60.950105][ T40] ? afs_put_call+0xa40/0xa40 [ 60.954775][ T40] print_address_description.constprop.0.cold+0xd3/0x413 [ 60.961796][ T40] ? vprintk_func+0x97/0x1a6 [ 60.966382][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 60.971917][ T40] kasan_report.cold+0x1f/0x37 [ 60.976693][ T40] ? rcu_read_lock_held+0x81/0xb0 [ 60.981713][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 60.987257][ T40] afs_wake_up_async_call+0x6aa/0x770 [ 60.992622][ T40] ? afs_close_socket+0x320/0x320 [ 60.997641][ T40] ? afs_put_call+0xa40/0xa40 [ 61.002314][ T40] rxrpc_notify_socket+0x1db/0x5d0 [ 61.007429][ T40] ? afs_put_call+0xa40/0xa40 [ 61.012103][ T40] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 61.018513][ T40] rxrpc_call_completed+0xca/0xf0 [ 61.023549][ T40] rxrpc_discard_prealloc+0x781/0xab0 [ 61.028918][ T40] ? lock_sock_nested+0x94/0x110 [ 61.033851][ T40] rxrpc_listen+0x147/0x360 [ 61.038382][ T40] afs_close_socket+0x95/0x320 [ 61.043138][ T40] ? afs_purge_servers+0x16d/0x300 [ 61.048247][ T40] ? afs_rx_discard_new_call+0x50/0x50 [ 61.053703][ T40] ? init_wait_var_entry+0x200/0x200 [ 61.058985][ T40] ? rcu_read_lock_held_common+0xa0/0xa0 [ 61.064626][ T40] ? check_preemption_disabled+0x38/0x220 [ 61.070351][ T40] afs_net_exit+0x1bc/0x310 [ 61.074846][ T40] ? afs_net_init+0xe30/0xe30 [ 61.079513][ T40] ops_exit_list.isra.0+0xa8/0x150 [ 61.084624][ T40] cleanup_net+0x511/0xa50 [ 61.089037][ T40] ? unregister_pernet_device+0x70/0x70 [ 61.094583][ T40] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.100563][ T40] process_one_work+0x965/0x1690 [ 61.105504][ T40] ? lock_release+0x800/0x800 [ 61.110178][ T40] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.115548][ T40] ? rwlock_bug.part.0+0x90/0x90 [ 61.120578][ T40] worker_thread+0x96/0xe10 [ 61.125089][ T40] ? process_one_work+0x1690/0x1690 [ 61.130282][ T40] kthread+0x3b5/0x4a0 [ 61.134349][ T40] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.140069][ T40] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.145797][ T40] ret_from_fork+0x1f/0x30 [ 61.150221][ T40] [ 61.152544][ T40] Allocated by task 6815: [ 61.156963][ T40] save_stack+0x1b/0x40 [ 61.161125][ T40] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 61.166748][ T40] kmem_cache_alloc_trace+0x153/0x7d0 [ 61.172112][ T40] afs_alloc_call+0x55/0x630 [ 61.176691][ T40] afs_charge_preallocation+0xe9/0x2d0 [ 61.182137][ T40] afs_open_socket+0x292/0x360 [ 61.186893][ T40] afs_net_init+0xa6c/0xe30 [ 61.191389][ T40] ops_init+0xaf/0x420 [ 61.195448][ T40] setup_net+0x2de/0x860 [ 61.200464][ T40] copy_net_ns+0x293/0x590 [ 61.204874][ T40] create_new_namespaces+0x3fb/0xb30 [ 61.210154][ T40] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 61.215865][ T40] ksys_unshare+0x43d/0x8e0 [ 61.220382][ T40] __x64_sys_unshare+0x2d/0x40 [ 61.225137][ T40] do_syscall_64+0x60/0xe0 [ 61.229546][ T40] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.235419][ T40] [ 61.237735][ T40] Freed by task 40: [ 61.241537][ T40] save_stack+0x1b/0x40 [ 61.245689][ T40] __kasan_slab_free+0xf7/0x140 [ 61.250529][ T40] kfree+0x109/0x2b0 [ 61.254413][ T40] afs_put_call+0x585/0xa40 [ 61.258907][ T40] rxrpc_discard_prealloc+0x764/0xab0 [ 61.264270][ T40] rxrpc_listen+0x147/0x360 [ 61.268762][ T40] afs_close_socket+0x95/0x320 [ 61.273517][ T40] afs_net_exit+0x1bc/0x310 [ 61.278008][ T40] ops_exit_list.isra.0+0xa8/0x150 [ 61.283104][ T40] cleanup_net+0x511/0xa50 [ 61.287513][ T40] process_one_work+0x965/0x1690 [ 61.292440][ T40] worker_thread+0x96/0xe10 [ 61.296942][ T40] kthread+0x3b5/0x4a0 [ 61.301003][ T40] ret_from_fork+0x1f/0x30 [ 61.305400][ T40] [ 61.307722][ T40] The buggy address belongs to the object at ffff8880a7045000 [ 61.307722][ T40] which belongs to the cache kmalloc-1k of size 1024 [ 61.321762][ T40] The buggy address is located 484 bytes inside of [ 61.321762][ T40] 1024-byte region [ffff8880a7045000, ffff8880a7045400) [ 61.335103][ T40] The buggy address belongs to the page: [ 61.340730][ T40] page:ffffea00029c1140 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 61.349948][ T40] flags: 0xfffe0000000200(slab) [ 61.354793][ T40] raw: 00fffe0000000200 ffffea00029c1d88 ffffea00029d1e48 ffff8880aa000c40 [ 61.363368][ T40] raw: 0000000000000000 ffff8880a7045000 0000000100000002 0000000000000000 [ 61.371939][ T40] page dumped because: kasan: bad access detected [ 61.378339][ T40] [ 61.380652][ T40] Memory state around the buggy address: [ 61.386373][ T40] ffff8880a7045080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.394514][ T40] ffff8880a7045100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.402564][ T40] >ffff8880a7045180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.410697][ T40] ^ [ 61.417878][ T40] ffff8880a7045200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.425930][ T40] ffff8880a7045280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb executing program [ 61.433974][ T40] ================================================================== [ 61.442018][ T40] Disabling lock debugging due to kernel taint [ 61.448227][ T40] Kernel panic - not syncing: panic_on_warn set ... [ 61.454810][ T40] CPU: 1 PID: 40 Comm: kworker/u4:2 Tainted: G B 5.7.0-syzkaller #0 [ 61.464078][ T40] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.474134][ T40] Workqueue: netns cleanup_net [ 61.478884][ T40] Call Trace: [ 61.482170][ T40] dump_stack+0x18f/0x20d [ 61.486495][ T40] ? afs_wake_up_async_call+0x5f0/0x770 [ 61.492031][ T40] ? afs_put_call+0xa40/0xa40 [ 61.496701][ T40] panic+0x2e3/0x75c [ 61.500590][ T40] ? __warn_printk+0xf3/0xf3 [ 61.505176][ T40] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 61.511335][ T40] ? trace_hardirqs_on+0x55/0x220 [ 61.516341][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.521872][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.527496][ T40] ? afs_put_call+0xa40/0xa40 [ 61.532154][ T40] end_report+0x4d/0x53 [ 61.536288][ T40] kasan_report.cold+0xd/0x37 [ 61.540949][ T40] ? rcu_read_lock_held+0x81/0xb0 [ 61.545950][ T40] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.551480][ T40] afs_wake_up_async_call+0x6aa/0x770 [ 61.556827][ T40] ? afs_close_socket+0x320/0x320 [ 61.561829][ T40] ? afs_put_call+0xa40/0xa40 [ 61.566491][ T40] rxrpc_notify_socket+0x1db/0x5d0 [ 61.571635][ T40] ? afs_put_call+0xa40/0xa40 [ 61.576295][ T40] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 61.582702][ T40] rxrpc_call_completed+0xca/0xf0 [ 61.587711][ T40] rxrpc_discard_prealloc+0x781/0xab0 [ 61.593070][ T40] ? lock_sock_nested+0x94/0x110 [ 61.597982][ T40] rxrpc_listen+0x147/0x360 [ 61.602643][ T40] afs_close_socket+0x95/0x320 [ 61.607473][ T40] ? afs_purge_servers+0x16d/0x300 [ 61.612596][ T40] ? afs_rx_discard_new_call+0x50/0x50 [ 61.618049][ T40] ? init_wait_var_entry+0x200/0x200 [ 61.623323][ T40] ? rcu_read_lock_held_common+0xa0/0xa0 [ 61.629031][ T40] ? check_preemption_disabled+0x38/0x220 [ 61.634747][ T40] afs_net_exit+0x1bc/0x310 [ 61.639233][ T40] ? afs_net_init+0xe30/0xe30 [ 61.643898][ T40] ops_exit_list.isra.0+0xa8/0x150 [ 61.648996][ T40] cleanup_net+0x511/0xa50 [ 61.653391][ T40] ? unregister_pernet_device+0x70/0x70 [ 61.658960][ T40] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.664918][ T40] process_one_work+0x965/0x1690 [ 61.669834][ T40] ? lock_release+0x800/0x800 [ 61.674488][ T40] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.679833][ T40] ? rwlock_bug.part.0+0x90/0x90 [ 61.684755][ T40] worker_thread+0x96/0xe10 [ 61.689242][ T40] ? process_one_work+0x1690/0x1690 [ 61.694420][ T40] kthread+0x3b5/0x4a0 [ 61.698471][ T40] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.704163][ T40] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.709865][ T40] ret_from_fork+0x1f/0x30 [ 61.715569][ T40] Kernel Offset: disabled [ 61.719880][ T40] Rebooting in 86400 seconds..