[ OK ] Started Daily apt upgrade and clean activities. [ OK ] Reached target Timers. Starting System Logging Service... Starting getty on tty2-tty6 if dbus and logind are not available... Starting OpenBSD Secure Shell server... [ OK ] Started Regular background program processing daemon. [ OK ] Started System Logging Service. [ OK ] Started Permit User Sessions. [ OK ] Started getty on tty2-tty6 if dbus and logind are not available. [ OK ] Started OpenBSD Secure Shell server. [ 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 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... [ 54.231706][ T6725] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6725 [ 54.241258][ T6725] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.247722][ T6725] CPU: 0 PID: 6725 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 54.255965][ T6725] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.267760][ T6725] Call Trace: [ 54.271056][ T6725] dump_stack+0x18f/0x20d [ 54.275398][ T6725] check_preemption_disabled+0x20d/0x220 [ 54.281038][ T6725] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.286262][ T6725] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.291728][ T6725] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.297458][ T6725] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.302762][ T6725] ? ext4_ext_release+0x10/0x10 [ 54.307635][ T6725] ? down_write_killable+0x170/0x170 [ 54.312925][ T6725] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.318755][ T6725] ext4_map_blocks+0x4cb/0x1640 [ 54.323622][ T6725] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.328825][ T6725] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.334381][ T6725] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.340801][ T6725] ? prandom_u32_state+0xe/0x170 [ 54.340836][ T6725] ? __brelse+0x84/0xa0 [ 54.349905][ T6725] ? __ext4_new_inode+0x144/0x55e0 [ 54.355021][ T6725] ext4_getblk+0xad/0x520 [ 54.359352][ T6725] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [[ 54.365077][ T6725] ? ext4_free_inode+0x1700/0x1700 [ 54.370261][ T6725] ext4_bread+0x7c/0x380  OK [0[ 54.374504][ T6725] ? ext4_getblk+0x520/0x520 [ 54.380485][ T6725] ? dquot_get_next_dqblk+0x180/0x180 m] [ 54.385861][ T6725] ext4_append+0x153/0x360 [ 54.390523][ T6725] ext4_mkdir+0x5e0/0xdf0 [ 54.394867][ T6725] ? ext4_rmdir+0xde0/0xde0 [ 54.399727][ T6725] ? security_inode_permission+0xc4/0xf0 Started Update U[ 54.405365][ T6725] vfs_mkdir+0x419/0x690 [ 54.410983][ T6725] do_mkdirat+0x21e/0x280 TMP about System[ 54.415328][ T6725] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.421554][ T6725] ? do_syscall_64+0x1c/0xe0 Runlevel Change[ 54.426157][ T6725] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.433516][ T6725] do_syscall_64+0x60/0xe0 [ 54.437935][ T6725] entry_SYSCALL_64_after_hwframe+0x44/0xa9 s. [ 54.443825][ T6725] RIP: 0033:0x7fe03a144687 [ 54.448560][ T6725] Code: Bad RIP value. [ 54.452613][ T6725] RSP: 002b:00007ffcb8e198f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.461023][ T6725] RAX: ffffffffffffffda RBX: 0000557ec2388985 RCX: 00007fe03a144687 [ 54.468991][ T6725] RDX: 00007ffcb8e197c0 RSI: 00000000000001ed RDI: 0000557ec2388985 [ 54.476941][ T6725] RBP: 00007fe03a144680 R08: 0000000000000100 R09: 0000000000000000 [ 54.484889][ T6725] R10: 0000557ec2388980 R11: 0000000000000246 R12: 00000000000001ed [ 54.492835][ T6725] R13: 00007ffcb8e19a80 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.976904][ T21] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:1/21 [ 56.985977][ T21] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.993256][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 57.001158][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 57.011216][ T21] Workqueue: writeback wb_workfn (flush-8:0) [ 57.017174][ T21] Call Trace: [ 57.020458][ T21] dump_stack+0x18f/0x20d [ 57.024774][ T21] check_preemption_disabled+0x20d/0x220 [ 57.030398][ T21] ext4_mb_new_blocks+0xa4d/0x3b70 [ 57.035495][ T21] ? ext4_find_extent+0x81a/0xad0 [ 57.040514][ T21] ? ext4_ext_search_right+0x2ca/0xb20 [ 57.045970][ T21] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 57.051683][ T21] ext4_ext_map_blocks+0x201b/0x33e0 [ 57.058254][ T21] ? ext4_ext_release+0x10/0x10 [ 57.063108][ T21] ? down_write_killable+0x170/0x170 [ 57.069363][ T21] ? ext4_es_lookup_extent+0x41d/0xd10 [ 57.075063][ T21] ext4_map_blocks+0x4cb/0x1640 [ 57.079910][ T21] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 57.085106][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.090630][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.099716][ T21] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 57.105168][ T21] ext4_writepages+0x1a7b/0x33c0 [ 57.110384][ T21] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.115993][ T21] ? __lock_acquire+0x2224/0x48b0 [ 57.121265][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.127237][ T21] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 57.133206][ T21] ? __ext4_mark_inode_dirty+0x940/0x940 [ 57.138817][ T21] ? do_writepages+0xfa/0x2a0 [ 57.144772][ T21] do_writepages+0xfa/0x2a0 [ 57.149268][ T21] ? page_writeback_cpu_online+0x10/0x10 [ 57.154885][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.160412][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.166528][ T21] ? lock_downgrade+0x840/0x840 [ 57.171375][ T21] __writeback_single_inode+0x12a/0x13d0 [ 57.177031][ T21] ? _raw_spin_unlock+0x24/0x40 [ 57.181920][ T21] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 57.187893][ T21] writeback_sb_inodes+0x515/0xdc0 [ 57.193007][ T21] ? __writeback_single_inode+0x13d0/0x13d0 [ 57.199591][ T21] __writeback_inodes_wb+0xc3/0x250 [ 57.204783][ T21] wb_writeback+0x8db/0xd50 [ 57.209272][ T21] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 57.215580][ T21] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 57.221455][ T21] ? cpumask_next+0x3c/0x40 [ 57.225956][ T21] ? get_nr_dirty_inodes+0xd6/0x130 [ 57.231152][ T21] wb_workfn+0xab3/0x1090 [ 57.235643][ T21] ? inode_wait_for_writeback+0x30/0x30 [ 57.242126][ T21] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 57.247647][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 57.253606][ T21] process_one_work+0x965/0x1690 [ 57.258548][ T21] ? lock_release+0x800/0x800 [ 57.263201][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 57.268552][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 57.273498][ T21] worker_thread+0x96/0xe10 [ 57.277996][ T21] ? process_one_work+0x1690/0x1690 [ 57.283177][ T21] kthread+0x3b5/0x4a0 [ 57.287221][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.292929][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 57.298645][ T21] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.0.244' (ECDSA) to the list of known hosts. 2020/06/14 09:46:47 fuzzer started 2020/06/14 09:46:47 connecting to host at 10.128.0.26:40791 2020/06/14 09:46:47 checking machine... 2020/06/14 09:46:47 checking revisions... 2020/06/14 09:46:47 testing simple program... [ 59.336644][ T6785] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6785 [ 59.345765][ T6785] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.351650][ T6785] CPU: 0 PID: 6785 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.359543][ T6785] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.369608][ T6785] Call Trace: [ 59.372905][ T6785] dump_stack+0x18f/0x20d [ 59.377219][ T6785] check_preemption_disabled+0x20d/0x220 [ 59.383657][ T6785] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.388780][ T6785] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.394246][ T6785] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.399957][ T6785] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.405245][ T6785] ? ext4_ext_release+0x10/0x10 [ 59.410104][ T6785] ? down_write_killable+0x170/0x170 [ 59.415368][ T6785] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.420821][ T6785] ext4_map_blocks+0x4cb/0x1640 [ 59.425917][ T6785] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.431095][ T6785] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.436623][ T6785] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.442588][ T6785] ? prandom_u32_state+0xe/0x170 [ 59.447508][ T6785] ? __brelse+0x84/0xa0 [ 59.452190][ T6785] ? __ext4_new_inode+0x144/0x55e0 [ 59.457301][ T6785] ext4_getblk+0xad/0x520 [ 59.461760][ T6785] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.467567][ T6785] ? ext4_free_inode+0x1700/0x1700 [ 59.472663][ T6785] ext4_bread+0x7c/0x380 [ 59.476902][ T6785] ? ext4_getblk+0x520/0x520 [ 59.481473][ T6785] ? dquot_get_next_dqblk+0x180/0x180 [ 59.486841][ T6785] ext4_append+0x153/0x360 [ 59.491252][ T6785] ext4_mkdir+0x5e0/0xdf0 [ 59.495565][ T6785] ? ext4_rmdir+0xde0/0xde0 [ 59.500050][ T6785] ? security_inode_permission+0xc4/0xf0 [ 59.505682][ T6785] vfs_mkdir+0x419/0x690 [ 59.509935][ T6785] do_mkdirat+0x21e/0x280 [ 59.514285][ T6785] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.519133][ T6785] ? do_syscall_64+0x1c/0xe0 [ 59.523709][ T6785] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.530106][ T6785] do_syscall_64+0x60/0xe0 [ 59.534504][ T6785] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.541759][ T6785] RIP: 0033:0x4b02a0 [ 59.545645][ T6785] Code: Bad RIP value. [ 59.549718][ T6785] RSP: 002b:000000c0000d34b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.558138][ T6785] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.566811][ T6785] RDX: 00000000000001c0 RSI: 000000c0000dac80 RDI: ffffffffffffff9c [ 59.574786][ T6785] RBP: 000000c0000d3510 R08: 0000000000000000 R09: 0000000000000000 [ 59.582768][ T6785] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.590863][ T6785] R13: 0000000000000065 R14: 0000000000000064 R15: 0000000000000100 [ 59.622712][ T6803] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6803 [ 59.633040][ T6803] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.639039][ T6803] CPU: 1 PID: 6803 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.647417][ T6803] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.657469][ T6803] Call Trace: [ 59.660742][ T6803] dump_stack+0x18f/0x20d [ 59.665071][ T6803] check_preemption_disabled+0x20d/0x220 [ 59.670698][ T6803] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.675797][ T6803] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.681248][ T6803] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.687041][ T6803] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.692309][ T6803] ? ext4_ext_release+0x10/0x10 [ 59.698735][ T6803] ? down_write_killable+0x170/0x170 [ 59.704028][ T6803] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.709477][ T6803] ext4_map_blocks+0x4cb/0x1640 [ 59.714323][ T6803] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.720308][ T6803] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.725865][ T6803] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.731962][ T6803] ? prandom_u32_state+0xe/0x170 [ 59.737009][ T6803] ? __brelse+0x84/0xa0 [ 59.741174][ T6803] ? __ext4_new_inode+0x144/0x55e0 [ 59.746287][ T6803] ext4_getblk+0xad/0x520 [ 59.750605][ T6803] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.756474][ T6803] ? ext4_free_inode+0x1700/0x1700 [ 59.761585][ T6803] ext4_bread+0x7c/0x380 [ 59.765857][ T6803] ? ext4_getblk+0x520/0x520 [ 59.770726][ T6803] ? dquot_get_next_dqblk+0x180/0x180 [ 59.776113][ T6803] ext4_append+0x153/0x360 [ 59.780520][ T6803] ext4_mkdir+0x5e0/0xdf0 [ 59.784858][ T6803] ? ext4_rmdir+0xde0/0xde0 [ 59.789356][ T6803] ? security_inode_permission+0xc4/0xf0 [ 59.795006][ T6803] vfs_mkdir+0x419/0x690 [ 59.799257][ T6803] do_mkdirat+0x21e/0x280 [ 59.803588][ T6803] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.808425][ T6803] ? do_syscall_64+0x1c/0xe0 [ 59.813015][ T6803] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.819125][ T6803] do_syscall_64+0x60/0xe0 [ 59.823535][ T6803] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.829425][ T6803] RIP: 0033:0x45bee7 [ 59.833293][ T6803] Code: Bad RIP value. [ 59.837335][ T6803] RSP: 002b:00007ffc6c957938 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.845725][ T6803] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.853689][ T6803] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc6c957b10 [ 59.861642][ T6803] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000036c0 [ 59.869617][ T6803] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.877653][ T6803] R13: 00007ffc6c957b10 R14: 8421084210842109 R15: 00007ffc6c957b1c [ 59.964976][ T6804] IPVS: ftp: loaded support on port[0] = 21 [ 60.003262][ T6804] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6804 [ 60.013040][ T6804] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.019135][ T6804] CPU: 0 PID: 6804 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.027465][ T6804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.037534][ T6804] Call Trace: [ 60.040815][ T6804] dump_stack+0x18f/0x20d [ 60.045129][ T6804] check_preemption_disabled+0x20d/0x220 [ 60.050746][ T6804] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.055845][ T6804] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.061283][ T6804] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.066986][ T6804] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.072289][ T6804] ? ext4_ext_release+0x10/0x10 [ 60.077161][ T6804] ? down_write_killable+0x170/0x170 [ 60.082449][ T6804] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.087901][ T6804] ext4_map_blocks+0x4cb/0x1640 [ 60.093711][ T6804] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.098890][ T6804] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.104545][ T6804] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.110534][ T6804] ? prandom_u32_state+0xe/0x170 [ 60.115458][ T6804] ? __brelse+0x84/0xa0 [ 60.119597][ T6804] ? __ext4_new_inode+0x144/0x55e0 [ 60.124710][ T6804] ext4_getblk+0xad/0x520 [ 60.129084][ T6804] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.134797][ T6804] ? ext4_free_inode+0x1700/0x1700 [ 60.139909][ T6804] ext4_bread+0x7c/0x380 [ 60.144157][ T6804] ? ext4_getblk+0x520/0x520 [ 60.148737][ T6804] ? dquot_get_next_dqblk+0x180/0x180 [ 60.154100][ T6804] ext4_append+0x153/0x360 [ 60.158526][ T6804] ext4_mkdir+0x5e0/0xdf0 [ 60.162861][ T6804] ? ext4_rmdir+0xde0/0xde0 [ 60.167537][ T6804] ? security_inode_permission+0xc4/0xf0 [ 60.173170][ T6804] vfs_mkdir+0x419/0x690 [ 60.177417][ T6804] do_mkdirat+0x21e/0x280 [ 60.181757][ T6804] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.186597][ T6804] ? do_syscall_64+0x1c/0xe0 [ 60.191187][ T6804] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.197152][ T6804] do_syscall_64+0x60/0xe0 [ 60.201568][ T6804] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.207613][ T6804] RIP: 0033:0x45bee7 [ 60.211480][ T6804] Code: Bad RIP value. [ 60.215721][ T6804] RSP: 002b:00007ffc6c957828 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.224109][ T6804] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.232076][ T6804] RDX: 00007ffc6c957873 RSI: 00000000000001ff RDI: 00007ffc6c957870 [ 60.240041][ T6804] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.248876][ T6804] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.256842][ T6804] R13: 00007ffc6c957860 R14: 0000000000000000 R15: 00007ffc6c957870 [ 60.308702][ T6804] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6804 [ 60.318350][ T6804] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.324254][ T6804] CPU: 0 PID: 6804 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.332495][ T6804] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.342559][ T6804] Call Trace: [ 60.345858][ T6804] dump_stack+0x18f/0x20d [ 60.350203][ T6804] check_preemption_disabled+0x20d/0x220 [ 60.355848][ T6804] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.360970][ T6804] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.366540][ T6804] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.372263][ T6804] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.377707][ T6804] ? ext4_ext_release+0x10/0x10 [ 60.382615][ T6804] ? down_write_killable+0x170/0x170 [ 60.387938][ T6804] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.393536][ T6804] ext4_map_blocks+0x4cb/0x1640 [ 60.398371][ T6804] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.403596][ T6804] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.409119][ T6804] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.415074][ T6804] ? prandom_u32_state+0xe/0x170 [ 60.420001][ T6804] ? __brelse+0x84/0xa0 [ 60.424134][ T6804] ? __ext4_new_inode+0x144/0x55e0 [ 60.429225][ T6804] ext4_getblk+0xad/0x520 [ 60.433547][ T6804] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.439262][ T6804] ? ext4_free_inode+0x1700/0x1700 [ 60.444367][ T6804] ext4_bread+0x7c/0x380 [ 60.448599][ T6804] ? ext4_getblk+0x520/0x520 [ 60.453176][ T6804] ? dquot_get_next_dqblk+0x180/0x180 [ 60.458541][ T6804] ext4_append+0x153/0x360 [ 60.462937][ T6804] ext4_mkdir+0x5e0/0xdf0 [ 60.467250][ T6804] ? ext4_rmdir+0xde0/0xde0 [ 60.471732][ T6804] ? security_inode_permission+0xc4/0xf0 [ 60.477359][ T6804] vfs_mkdir+0x419/0x690 [ 60.481594][ T6804] do_mkdirat+0x21e/0x280 [ 60.485926][ T6804] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.490819][ T6804] ? do_syscall_64+0x1c/0xe0 [ 60.495389][ T6804] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.501348][ T6804] do_syscall_64+0x60/0xe0 [ 60.505744][ T6804] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.511698][ T6804] RIP: 0033:0x45bee7 [ 60.515564][ T6804] Code: Bad RIP value. [ 60.519608][ T6804] RSP: 002b:00007ffc6c957828 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.528003][ T6804] RAX: ffffffffffffffda RBX: 000000000000eb84 RCX: 000000000045bee7 [ 60.535961][ T6804] RDX: 00007ffc6c957873 RSI: 00000000000001ff RDI: 00007ffc6c957870 [ 60.543918][ T6804] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.551886][ T6804] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.559922][ T6804] R13: 00007ffc6c957860 R14: 000000000000eb72 R15: 00007ffc6c957870 [ 60.581190][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 60.590577][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.598004][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.605910][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.615957][ T1155] Call Trace: [ 60.619228][ T1155] dump_stack+0x18f/0x20d [ 60.623545][ T1155] check_preemption_disabled+0x20d/0x220 [ 60.629270][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.634465][ T1155] ? ext4_find_extent+0x81a/0xad0 [ 60.639493][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.644962][ T1155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.650698][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.655998][ T1155] ? ext4_ext_release+0x10/0x10 [ 60.660874][ T1155] ? down_write_killable+0x170/0x170 [ 60.666160][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.671632][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 60.676504][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.681730][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.687290][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.693280][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.698755][ T1155] ext4_writepages+0x1a7b/0x33c0 [ 60.703900][ T1155] ? lock_release+0x7c0/0x800 [ 60.708605][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.714280][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.719918][ T1155] ? do_writepages+0xfa/0x2a0 [ 60.724794][ T1155] do_writepages+0xfa/0x2a0 [ 60.729286][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 60.734999][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 60.740007][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 60.745211][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 60.750065][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.755777][ T1155] ? collapse_file+0x35a2/0x4330 [ 60.760798][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.766956][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.772241][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.778224][ T1155] collapse_file+0x35ac/0x4330 [ 60.782983][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 60.788337][ T1155] ? khugepaged+0x2506/0x3fc0 [ 60.793017][ T1155] ? xas_find+0x31a/0x880 [ 60.797332][ T1155] ? check_preemption_disabled+0x38/0x220 [ 60.803036][ T1155] khugepaged+0x3041/0x3fc0 [ 60.807551][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.813185][ T1155] ? lock_downgrade+0x840/0x840 [ 60.818021][ T1155] ? finish_wait+0x260/0x260 [ 60.822620][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.828423][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.834505][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 60.839524][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.845170][ T1155] kthread+0x3b5/0x4a0 [ 60.849268][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.854977][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 2020/06/14 09:46:49 building call list... [ 60.860695][ T1155] ret_from_fork+0x1f/0x30 [ 61.052755][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.062000][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.067985][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.075953][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.086277][ T1155] Call Trace: [ 61.089566][ T1155] dump_stack+0x18f/0x20d [ 61.093898][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.099535][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.104666][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.110134][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.116293][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.121602][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.126498][ T1155] ? down_write_killable+0x170/0x170 [ 61.131776][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.137239][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.142099][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.147321][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.152860][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.158842][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.164302][ T1155] ext4_writepages+0x1a7b/0x33c0 [ 61.169264][ T1155] ? lock_release+0x7c0/0x800 [ 61.174054][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.179715][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.185342][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.190031][ T1155] do_writepages+0xfa/0x2a0 [ 61.194542][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.200171][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 61.205191][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.210385][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.215236][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.220948][ T1155] ? collapse_file+0x35a2/0x4330 [ 61.226748][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.232851][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.238080][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.244092][ T1155] collapse_file+0x35ac/0x4330 [ 61.248886][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.254267][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.258960][ T1155] ? xas_find+0x31a/0x880 [ 61.263293][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.269020][ T1155] khugepaged+0x3041/0x3fc0 [ 61.273988][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.279619][ T1155] ? lock_downgrade+0x840/0x840 [ 61.284470][ T1155] ? finish_wait+0x260/0x260 [ 61.290025][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.295837][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.301843][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.306867][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.312497][ T1155] kthread+0x3b5/0x4a0 [ 61.316999][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.322720][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.329134][ T1155] ret_from_fork+0x1f/0x30 [ 61.413393][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.422583][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.428567][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.436447][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.446494][ T1155] Call Trace: [ 61.449785][ T1155] dump_stack+0x18f/0x20d [ 61.454121][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.459755][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.464874][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.470342][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.476505][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.481808][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.486677][ T1155] ? down_write_killable+0x170/0x170 [ 61.491960][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.497423][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.502299][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.507513][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.513703][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.519687][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.525850][ T1155] ext4_writepages+0x1a7b/0x33c0 [ 61.530791][ T1155] ? lock_release+0x7c0/0x800 [ 61.535483][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.541143][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.546812][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.551503][ T1155] do_writepages+0xfa/0x2a0 [ 61.556016][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.561652][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 61.566676][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.571969][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.576822][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.582547][ T1155] ? collapse_file+0x35a2/0x4330 [ 61.587490][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.593565][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.598761][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.604743][ T1155] collapse_file+0x35ac/0x4330 [ 61.609549][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.614913][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.619605][ T1155] ? xas_find+0x31a/0x880 [ 61.623950][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.629669][ T1155] khugepaged+0x3041/0x3fc0 [ 61.634194][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.639869][ T1155] ? lock_downgrade+0x840/0x840 [ 61.644733][ T1155] ? finish_wait+0x260/0x260 [ 61.649332][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.655166][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.661159][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.666192][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.671821][ T1155] kthread+0x3b5/0x4a0 [ 61.675908][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.681630][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.687801][ T1155] ret_from_fork+0x1f/0x30 [ 61.715160][ T21] tipc: TX() has been purged, node left! executing program [ 62.247656][ T21] ================================================================== [ 62.255908][ T21] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 62.263793][ T21] Write of size 1 at addr ffff8880a7e261e4 by task kworker/u4:1/21 [ 62.271670][ T21] [ 62.274005][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 62.281893][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.292037][ T21] Workqueue: netns cleanup_net [ 62.296809][ T21] Call Trace: [ 62.300106][ T21] dump_stack+0x18f/0x20d [ 62.304438][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.309979][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.315536][ T21] ? afs_put_call+0xa40/0xa40 [ 62.320217][ T21] print_address_description.constprop.0.cold+0xd3/0x413 [ 62.327246][ T21] ? vprintk_func+0x97/0x1a6 [ 62.331855][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.337397][ T21] kasan_report.cold+0x1f/0x37 [ 62.342163][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 62.347183][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.352908][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 62.358623][ T21] ? afs_close_socket+0x320/0x320 [ 62.363661][ T21] ? afs_put_call+0xa40/0xa40 [ 62.368340][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 62.373482][ T21] ? afs_put_call+0xa40/0xa40 [ 62.378158][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.384661][ T21] rxrpc_call_completed+0xca/0xf0 [ 62.389863][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 62.396033][ T21] ? lock_sock_nested+0x94/0x110 [ 62.400972][ T21] rxrpc_listen+0x147/0x360 [ 62.405474][ T21] afs_close_socket+0x95/0x320 [ 62.410238][ T21] ? afs_purge_servers+0x16d/0x300 [ 62.415359][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 62.420819][ T21] ? init_wait_var_entry+0x200/0x200 [ 62.426134][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.431765][ T21] ? check_preemption_disabled+0x38/0x220 [ 62.437491][ T21] afs_net_exit+0x1bc/0x310 [ 62.441994][ T21] ? afs_net_init+0xe30/0xe30 [ 62.446668][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.451865][ T21] cleanup_net+0x511/0xa50 [ 62.456281][ T21] ? unregister_pernet_device+0x70/0x70 [ 62.461829][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.467815][ T21] process_one_work+0x965/0x1690 [ 62.472761][ T21] ? lock_release+0x800/0x800 [ 62.477439][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.482819][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 62.487778][ T21] worker_thread+0x96/0xe10 [ 62.492570][ T21] ? process_one_work+0x1690/0x1690 [ 62.497801][ T21] kthread+0x3b5/0x4a0 [ 62.501882][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.507605][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.513346][ T21] ret_from_fork+0x1f/0x30 [ 62.517777][ T21] [ 62.520107][ T21] Allocated by task 6804: [ 62.524447][ T21] save_stack+0x1b/0x40 [ 62.528791][ T21] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 62.534435][ T21] kmem_cache_alloc_trace+0x153/0x7d0 [ 62.539814][ T21] afs_alloc_call+0x55/0x630 [ 62.544423][ T21] afs_charge_preallocation+0xe9/0x2d0 [ 62.549903][ T21] afs_open_socket+0x292/0x360 [ 62.554700][ T21] afs_net_init+0xa6c/0xe30 [ 62.559208][ T21] ops_init+0xaf/0x420 [ 62.563284][ T21] setup_net+0x2de/0x860 [ 62.567538][ T21] copy_net_ns+0x293/0x590 [ 62.571970][ T21] create_new_namespaces+0x3fb/0xb30 [ 62.577253][ T21] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 62.583000][ T21] ksys_unshare+0x43d/0x8e0 [ 62.587503][ T21] __x64_sys_unshare+0x2d/0x40 [ 62.592259][ T21] do_syscall_64+0x60/0xe0 [ 62.596681][ T21] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.602565][ T21] [ 62.604889][ T21] Freed by task 21: [ 62.608691][ T21] save_stack+0x1b/0x40 [ 62.612936][ T21] __kasan_slab_free+0xf7/0x140 [ 62.617769][ T21] kfree+0x109/0x2b0 [ 62.621647][ T21] afs_put_call+0x585/0xa40 [ 62.626141][ T21] rxrpc_discard_prealloc+0x764/0xab0 [ 62.631506][ T21] rxrpc_listen+0x147/0x360 [ 62.636001][ T21] afs_close_socket+0x95/0x320 [ 62.640831][ T21] afs_net_exit+0x1bc/0x310 [ 62.645335][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.650496][ T21] cleanup_net+0x511/0xa50 [ 62.654919][ T21] process_one_work+0x965/0x1690 [ 62.659843][ T21] worker_thread+0x96/0xe10 [ 62.664521][ T21] kthread+0x3b5/0x4a0 [ 62.668594][ T21] ret_from_fork+0x1f/0x30 [ 62.672990][ T21] [ 62.675320][ T21] The buggy address belongs to the object at ffff8880a7e26000 [ 62.675320][ T21] which belongs to the cache kmalloc-1k of size 1024 [ 62.689357][ T21] The buggy address is located 484 bytes inside of [ 62.689357][ T21] 1024-byte region [ffff8880a7e26000, ffff8880a7e26400) [ 62.702710][ T21] The buggy address belongs to the page: [ 62.708330][ T21] page:ffffea00029f8980 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 62.717491][ T21] flags: 0xfffe0000000200(slab) [ 62.722582][ T21] raw: 00fffe0000000200 ffffea00027de088 ffffea00028ea988 ffff8880aa000c40 [ 62.731214][ T21] raw: 0000000000000000 ffff8880a7e26000 0000000100000002 0000000000000000 [ 62.739800][ T21] page dumped because: kasan: bad access detected [ 62.746207][ T21] [ 62.748546][ T21] Memory state around the buggy address: [ 62.754245][ T21] ffff8880a7e26080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.762303][ T21] ffff8880a7e26100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.770344][ T21] >ffff8880a7e26180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.778381][ T21] ^ [ 62.785554][ T21] ffff8880a7e26200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.793670][ T21] ffff8880a7e26280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.801746][ T21] ================================================================== [ 62.809801][ T21] Disabling lock debugging due to kernel taint [ 62.816009][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 62.822631][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Tainted: G B 5.7.0-syzkaller #0 [ 62.832375][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.842450][ T21] Workqueue: netns cleanup_net [ 62.847212][ T21] Call Trace: [ 62.850620][ T21] dump_stack+0x18f/0x20d [ 62.854963][ T21] ? afs_wake_up_async_call+0x5f0/0x770 [ 62.860500][ T21] ? afs_put_call+0xa40/0xa40 [ 62.865159][ T21] panic+0x2e3/0x75c [ 62.869053][ T21] ? __warn_printk+0xf3/0xf3 [ 62.873640][ T21] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 62.880223][ T21] ? trace_hardirqs_on+0x55/0x220 [ 62.885224][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.890749][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.896339][ T21] ? afs_put_call+0xa40/0xa40 [ 62.901017][ T21] end_report+0x4d/0x53 [ 62.905178][ T21] kasan_report.cold+0xd/0x37 [ 62.909859][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 62.914887][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.920424][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 62.925770][ T21] ? afs_close_socket+0x320/0x320 [ 62.930769][ T21] ? afs_put_call+0xa40/0xa40 [ 62.935424][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 62.940510][ T21] ? afs_put_call+0xa40/0xa40 [ 62.945167][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.951554][ T21] rxrpc_call_completed+0xca/0xf0 [ 62.956575][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 62.961925][ T21] ? lock_sock_nested+0x94/0x110 [ 62.966853][ T21] rxrpc_listen+0x147/0x360 [ 62.971640][ T21] afs_close_socket+0x95/0x320 [ 62.976508][ T21] ? afs_purge_servers+0x16d/0x300 [ 62.981606][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 62.987050][ T21] ? init_wait_var_entry+0x200/0x200 [ 62.992340][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.997952][ T21] ? check_preemption_disabled+0x38/0x220 [ 63.003663][ T21] afs_net_exit+0x1bc/0x310 [ 63.008148][ T21] ? afs_net_init+0xe30/0xe30 [ 63.012810][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 63.017900][ T21] cleanup_net+0x511/0xa50 [ 63.022292][ T21] ? unregister_pernet_device+0x70/0x70 [ 63.027854][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.033995][ T21] process_one_work+0x965/0x1690 [ 63.038958][ T21] ? lock_release+0x800/0x800 [ 63.043608][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 63.048956][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 63.053867][ T21] worker_thread+0x96/0xe10 [ 63.058359][ T21] ? process_one_work+0x1690/0x1690 [ 63.063542][ T21] kthread+0x3b5/0x4a0 [ 63.067585][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.073276][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.078969][ T21] ret_from_fork+0x1f/0x30 [ 63.084944][ T21] Kernel Offset: disabled [ 63.089292][ T21] Rebooting in 86400 seconds..