[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. [ 54.583265][ T6748] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6748 [ 54.592979][ T6748] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.599976][ T6748] CPU: 1 PID: 6748 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 54.599990][ T6748] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 54.600000][ T6748] Call Trace: [ 54.600021][ T6748] dump_stack+0x18f/0x20d [ 54.600042][ T6748] check_preemption_disabled+0x20d/0x220 [ 54.600058][ T6748] ext4_mb_new_blocks+0xa4d/0x3b70 [ 54.600120][ T6748] ? ext4_ext_search_right+0x2ca/0xb20 [ 54.600136][ T6748] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 54.600162][ T6748] ext4_ext_map_blocks+0x201b/0x33e0 [ 54.600203][ T6748] ? ext4_ext_release+0x10/0x10 [ 54.600231][ T6748] ? down_write_killable+0x170/0x170 [ 54.600242][ T6748] ? ext4_es_lookup_extent+0x41d/0xd10 [ 54.600269][ T6748] ext4_map_blocks+0x4cb/0x1640 [ 54.600289][ T6748] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 54.600303][ T6748] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 54.600320][ T6748] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 54.600335][ T6748] ? prandom_u32_state+0xe/0x170 [ 54.600352][ T6748] ? __brelse+0x84/0xa0 [ 54.600368][ T6748] ? __ext4_new_inode+0x144/0x55e0 [ 54.600391][ T6748] ext4_getblk+0xad/0x520 [ 54.600408][ T6748] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 54.600432][ T6748] ? ext4_free_inode+0x1700/0x1700 [ 54.600449][ T6748] ext4_bread+0x7c/0x380 [ 54.600464][ T6748] ? ext4_getblk+0x520/0x520 [ 54.600481][ T6748] ? dquot_get_next_dqblk+0x180/0x180 [ 54.600505][ T6748] ext4_append+0x153/0x360 [ 54.600528][ T6748] ext4_mkdir+0x5e0/0xdf0 [ 54.600552][ T6748] ? ext4_rmdir+0xde0/0xde0 [ 54.600576][ T6748] ? security_inode_permission+0xc4/0xf0 [ 54.600600][ T6748] vfs_mkdir+0x419/0x690 [ 54.600619][ T6748] do_mkdirat+0x21e/0x280 [ 54.600637][ T6748] ? __ia32_sys_mknod+0xb0/0xb0 [ 54.600653][ T6748] ? do_syscall_64+0x1c/0xe0 [ 54.600669][ T6748] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 54.600692][ T6748] do_syscall_64+0x60/0xe0 [ 54.600709][ T6748] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 54.600723][ T6748] RIP: 0033:0x7fb3d613e687 [ 54.600731][ T6748] Code: Bad RIP value. [ 54.600742][ T6748] RSP: 002b:00007fff09723d88 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 54.600763][ T6748] RAX: ffffffffffffffda RBX: 000055a4a370b985 RCX: 00007fb3d613e687 [ 54.600775][ T6748] RDX: 00007fff09723c50 RSI: 00000000000001ed RDI: 000055a4a370b985 [ 54.600786][ T6748] RBP: 00007fb3d613e680 R08: 0000000000000100 R09: 0000000000000000 [ 54.600797][ T6748] R10: 000055a4a370b980 R11: 0000000000000246 R12: 00000000000001ed [ 54.600808][ T6748] R13: 00007fff09723f10 R14: 0000000000000000 R15: 0000000000000000 Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 58.096176][ T6767] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:8/6767 [ 58.105405][ T6767] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.111462][ T6767] CPU: 0 PID: 6767 Comm: kworker/u4:8 Not tainted 5.7.0-syzkaller #0 [ 58.119543][ T6767] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.129605][ T6767] Workqueue: writeback wb_workfn (flush-8:0) [ 58.135574][ T6767] Call Trace: [ 58.138874][ T6767] dump_stack+0x18f/0x20d [ 58.143197][ T6767] check_preemption_disabled+0x20d/0x220 [ 58.148819][ T6767] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.153915][ T6767] ? ext4_find_extent+0x81a/0xad0 [ 58.158941][ T6767] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.164389][ T6767] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.170106][ T6767] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.175388][ T6767] ? ext4_ext_release+0x10/0x10 [ 58.180248][ T6767] ? down_write_killable+0x170/0x170 [ 58.185529][ T6767] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.191098][ T6767] ext4_map_blocks+0x4cb/0x1640 [ 58.195935][ T6767] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.201215][ T6767] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.206739][ T6767] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.212696][ T6767] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 58.218149][ T6767] ext4_writepages+0x1a7b/0x33c0 [ 58.223097][ T6767] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.228968][ T6767] ? __lock_acquire+0x2224/0x48b0 [ 58.233985][ T6767] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.239952][ T6767] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 58.245930][ T6767] ? __ext4_mark_inode_dirty+0x940/0x940 [ 58.251546][ T6767] ? do_writepages+0xfa/0x2a0 [ 58.256200][ T6767] do_writepages+0xfa/0x2a0 [ 58.260698][ T6767] ? page_writeback_cpu_online+0x10/0x10 [ 58.266313][ T6767] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.271835][ T6767] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.277795][ T6767] ? lock_downgrade+0x840/0x840 [ 58.282629][ T6767] __writeback_single_inode+0x12a/0x13d0 [ 58.288244][ T6767] ? _raw_spin_unlock+0x24/0x40 [ 58.293087][ T6767] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 58.299048][ T6767] writeback_sb_inodes+0x515/0xdc0 [ 58.304234][ T6767] ? __writeback_single_inode+0x13d0/0x13d0 [ 58.310120][ T6767] __writeback_inodes_wb+0xc3/0x250 [ 58.315305][ T6767] wb_writeback+0x8db/0xd50 [ 58.319811][ T6767] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 58.326246][ T6767] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 58.332558][ T6767] ? cpumask_next+0x3c/0x40 [ 58.337041][ T6767] ? get_nr_dirty_inodes+0xd6/0x130 [ 58.342247][ T6767] wb_workfn+0xab3/0x1090 [ 58.346561][ T6767] ? inode_wait_for_writeback+0x30/0x30 [ 58.352089][ T6767] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.357613][ T6767] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.363587][ T6767] process_one_work+0x965/0x1690 [ 58.368513][ T6767] ? lock_release+0x800/0x800 [ 58.373187][ T6767] ? pwq_dec_nr_in_flight+0x310/0x310 [ 58.378542][ T6767] ? rwlock_bug.part.0+0x90/0x90 [ 58.383478][ T6767] worker_thread+0x96/0xe10 [ 58.388144][ T6767] ? process_one_work+0x1690/0x1690 [ 58.393324][ T6767] kthread+0x3b5/0x4a0 [ 58.397371][ T6767] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.403088][ T6767] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 58.408816][ T6767] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.1.38' (ECDSA) to the list of known hosts. 2020/06/14 22:36:59 fuzzer started 2020/06/14 22:36:59 connecting to host at 10.128.0.26:43933 2020/06/14 22:36:59 checking machine... 2020/06/14 22:36:59 checking revisions... 2020/06/14 22:36:59 testing simple program... [ 59.142159][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 59.151491][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.157515][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.165425][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.177390][ T1157] Call Trace: [ 59.180711][ T1157] dump_stack+0x18f/0x20d [ 59.185055][ T1157] check_preemption_disabled+0x20d/0x220 [ 59.190692][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.195842][ T1157] ? ext4_find_extent+0x81a/0xad0 [ 59.200891][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.206356][ T1157] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.212243][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.217549][ T1157] ? ext4_ext_release+0x10/0x10 [ 59.222419][ T1157] ? down_write_killable+0x170/0x170 [ 59.227725][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.233192][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 59.238068][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.243362][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.248924][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.255000][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.260470][ T1157] ext4_writepages+0x1a7b/0x33c0 [ 59.265468][ T1157] ? lock_release+0x7c0/0x800 [ 59.270173][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.275842][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.281478][ T1157] ? do_writepages+0xfa/0x2a0 [ 59.285895][ T6798] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6798 [ 59.286154][ T1157] do_writepages+0xfa/0x2a0 [ 59.295165][ T6798] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.299695][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 59.299712][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 59.299725][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 59.299744][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 59.299762][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.299793][ T1157] ? collapse_file+0x35a2/0x4330 [ 59.336969][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.343037][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.348217][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.354195][ T1157] collapse_file+0x35ac/0x4330 [ 59.358971][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 59.364336][ T1157] ? khugepaged+0x2506/0x3fc0 [ 59.369006][ T1157] ? xas_find+0x31a/0x880 [ 59.373506][ T1157] ? check_preemption_disabled+0x38/0x220 [ 59.379208][ T1157] khugepaged+0x3041/0x3fc0 [ 59.383720][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.389335][ T1157] ? lock_downgrade+0x840/0x840 [ 59.394166][ T1157] ? finish_wait+0x260/0x260 [ 59.398751][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 59.404549][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.410526][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 59.415536][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.421238][ T1157] kthread+0x3b5/0x4a0 [ 59.425297][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.430995][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.436701][ T1157] ret_from_fork+0x1f/0x30 [ 59.441115][ T6798] CPU: 1 PID: 6798 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.449014][ T6798] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.459158][ T6798] Call Trace: [ 59.462456][ T6798] dump_stack+0x18f/0x20d [ 59.466802][ T6798] check_preemption_disabled+0x20d/0x220 [ 59.472450][ T6798] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.477658][ T6798] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.483198][ T6798] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.488937][ T6798] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.494312][ T6798] ? ext4_ext_release+0x10/0x10 [ 59.499192][ T6798] ? down_write_killable+0x170/0x170 [ 59.504510][ T6798] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.511390][ T6798] ext4_map_blocks+0x4cb/0x1640 [ 59.516236][ T6798] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.521420][ T6798] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.526988][ T6798] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.532984][ T6798] ? prandom_u32_state+0xe/0x170 [ 59.538026][ T6798] ? __brelse+0x84/0xa0 [ 59.542179][ T6798] ? __ext4_new_inode+0x144/0x55e0 [ 59.547312][ T6798] ext4_getblk+0xad/0x520 [ 59.551628][ T6798] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.557433][ T6798] ? ext4_free_inode+0x1700/0x1700 [ 59.562540][ T6798] ext4_bread+0x7c/0x380 [ 59.566773][ T6798] ? ext4_getblk+0x520/0x520 [ 59.571342][ T6798] ? dquot_get_next_dqblk+0x180/0x180 [ 59.576694][ T6798] ext4_append+0x153/0x360 [ 59.581091][ T6798] ext4_mkdir+0x5e0/0xdf0 [ 59.585401][ T6798] ? ext4_rmdir+0xde0/0xde0 [ 59.589884][ T6798] ? security_inode_permission+0xc4/0xf0 [ 59.595519][ T6798] vfs_mkdir+0x419/0x690 [ 59.599772][ T6798] do_mkdirat+0x21e/0x280 [ 59.604166][ T6798] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.609090][ T6798] ? do_syscall_64+0x1c/0xe0 [ 59.613656][ T6798] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.619634][ T6798] do_syscall_64+0x60/0xe0 [ 59.624030][ T6798] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.629898][ T6798] RIP: 0033:0x4b02a0 [ 59.633762][ T6798] Code: Bad RIP value. [ 59.637801][ T6798] RSP: 002b:000000c0000d74b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.646202][ T6798] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 59.654148][ T6798] RDX: 00000000000001c0 RSI: 000000c0000268a0 RDI: ffffffffffffff9c [ 59.662096][ T6798] RBP: 000000c0000d7510 R08: 0000000000000000 R09: 0000000000000000 [ 59.670044][ T6798] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.678471][ T6798] R13: 0000000000000046 R14: 0000000000000045 R15: 0000000000000100 [ 59.694999][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 59.704522][ T6814] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.710535][ T6814] CPU: 1 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.718777][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.728860][ T6814] Call Trace: [ 59.732157][ T6814] dump_stack+0x18f/0x20d [ 59.736504][ T6814] check_preemption_disabled+0x20d/0x220 [ 59.742141][ T6814] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.747273][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.752735][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.758488][ T6814] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.763807][ T6814] ? ext4_ext_release+0x10/0x10 [ 59.768684][ T6814] ? down_write_killable+0x170/0x170 [ 59.773975][ T6814] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.779449][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 59.784308][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.789485][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.795462][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.801443][ T6814] ? prandom_u32_state+0xe/0x170 [ 59.806951][ T6814] ? __brelse+0x84/0xa0 [ 59.811132][ T6814] ? __ext4_new_inode+0x144/0x55e0 [ 59.816236][ T6814] ext4_getblk+0xad/0x520 [ 59.820611][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.826311][ T6814] ? ext4_free_inode+0x1700/0x1700 [ 59.831416][ T6814] ext4_bread+0x7c/0x380 [ 59.835638][ T6814] ? ext4_getblk+0x520/0x520 [ 59.840204][ T6814] ? dquot_get_next_dqblk+0x180/0x180 [ 59.845562][ T6814] ext4_append+0x153/0x360 [ 59.849974][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 59.854293][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 59.858787][ T6814] ? security_inode_permission+0xc4/0xf0 [ 59.864399][ T6814] vfs_mkdir+0x419/0x690 [ 59.868632][ T6814] do_mkdirat+0x21e/0x280 [ 59.872939][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.877770][ T6814] ? do_syscall_64+0x1c/0xe0 [ 59.882346][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.888314][ T6814] do_syscall_64+0x60/0xe0 [ 59.892709][ T6814] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.898576][ T6814] RIP: 0033:0x45bee7 [ 59.902451][ T6814] Code: Bad RIP value. [ 59.906504][ T6814] RSP: 002b:00007ffe290d16c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.914889][ T6814] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.922932][ T6814] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffe290d18a0 [ 59.930894][ T6814] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000027c0 [ 59.939635][ T6814] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.947591][ T6814] R13: 00007ffe290d18a0 R14: 8421084210842109 R15: 00007ffe290d18ac [ 59.970431][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 59.979571][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.985546][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.993430][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.003771][ T1157] Call Trace: [ 60.007168][ T1157] dump_stack+0x18f/0x20d [ 60.011593][ T1157] check_preemption_disabled+0x20d/0x220 [ 60.017245][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.022457][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.027922][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.034082][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.039374][ T1157] ? ext4_ext_release+0x10/0x10 [ 60.044243][ T1157] ? down_write_killable+0x170/0x170 [ 60.049528][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.054994][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 60.059323][ T6816] IPVS: ftp: loaded support on port[0] = 21 [ 60.059850][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.070910][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.076462][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.082445][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.087912][ T1157] ext4_writepages+0x1a7b/0x33c0 [ 60.092857][ T1157] ? lock_release+0x7c0/0x800 [ 60.097552][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.103213][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.103527][ T6816] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6816 [ 60.108838][ T1157] ? do_writepages+0xfa/0x2a0 [ 60.108851][ T1157] do_writepages+0xfa/0x2a0 [ 60.108871][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 60.108886][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 60.108904][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 60.118313][ T6816] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.122925][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 60.154198][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.159920][ T1157] ? collapse_file+0x35a2/0x4330 [ 60.164842][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.171505][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.176691][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.182679][ T1157] collapse_file+0x35ac/0x4330 [ 60.187444][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 60.192811][ T1157] ? khugepaged+0x2506/0x3fc0 [ 60.197479][ T1157] ? xas_find+0x31a/0x880 [ 60.201805][ T1157] ? check_preemption_disabled+0x38/0x220 [ 60.207508][ T1157] khugepaged+0x3041/0x3fc0 [ 60.212011][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.217725][ T1157] ? lock_downgrade+0x840/0x840 [ 60.222571][ T1157] ? finish_wait+0x260/0x260 [ 60.227148][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.232948][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.238913][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 60.243924][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.249552][ T1157] kthread+0x3b5/0x4a0 [ 60.253618][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.259318][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.265055][ T1157] ret_from_fork+0x1f/0x30 [ 60.270424][ T6816] CPU: 1 PID: 6816 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.278771][ T6816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.288829][ T6816] Call Trace: [ 60.292124][ T6816] dump_stack+0x18f/0x20d [ 60.296460][ T6816] check_preemption_disabled+0x20d/0x220 [ 60.302963][ T6816] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.304909][ T1157] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1157 [ 60.308084][ T6816] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.308099][ T6816] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.308123][ T6816] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.317198][ T1157] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.322633][ T6816] ? ext4_ext_release+0x10/0x10 [ 60.344362][ T6816] ? down_write_killable+0x170/0x170 [ 60.349630][ T6816] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.355076][ T6816] ext4_map_blocks+0x4cb/0x1640 [ 60.359916][ T6816] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.365097][ T6816] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.370626][ T6816] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.376611][ T6816] ? prandom_u32_state+0xe/0x170 [ 60.381556][ T6816] ? __brelse+0x84/0xa0 [ 60.385734][ T6816] ? __ext4_new_inode+0x144/0x55e0 [ 60.390849][ T6816] ext4_getblk+0xad/0x520 [ 60.395170][ T6816] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.400882][ T6816] ? ext4_free_inode+0x1700/0x1700 [ 60.406005][ T6816] ext4_bread+0x7c/0x380 [ 60.410235][ T6816] ? ext4_getblk+0x520/0x520 [ 60.414810][ T6816] ? dquot_get_next_dqblk+0x180/0x180 [ 60.420273][ T6816] ext4_append+0x153/0x360 [ 60.424684][ T6816] ext4_mkdir+0x5e0/0xdf0 [ 60.429031][ T6816] ? ext4_rmdir+0xde0/0xde0 [ 60.433524][ T6816] ? security_inode_permission+0xc4/0xf0 [ 60.439503][ T6816] vfs_mkdir+0x419/0x690 [ 60.443751][ T6816] do_mkdirat+0x21e/0x280 [ 60.448086][ T6816] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.452926][ T6816] ? do_syscall_64+0x1c/0xe0 [ 60.457507][ T6816] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.464784][ T6816] do_syscall_64+0x60/0xe0 [ 60.469188][ T6816] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.475071][ T6816] RIP: 0033:0x45bee7 [ 60.479060][ T6816] Code: Bad RIP value. [ 60.483123][ T6816] RSP: 002b:00007ffe290d15b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.491605][ T6816] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.499575][ T6816] RDX: 00007ffe290d1603 RSI: 00000000000001ff RDI: 00007ffe290d1600 [ 60.507531][ T6816] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.515574][ T6816] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.523531][ T6816] R13: 00007ffe290d15f0 R14: 0000000000000000 R15: 00007ffe290d1600 [ 60.531509][ T1157] CPU: 0 PID: 1157 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.539412][ T1157] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.549992][ T1157] Call Trace: [ 60.553321][ T1157] dump_stack+0x18f/0x20d [ 60.557663][ T1157] check_preemption_disabled+0x20d/0x220 [ 60.563309][ T1157] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.568445][ T1157] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.573918][ T1157] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.580092][ T1157] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.585388][ T1157] ? ext4_ext_release+0x10/0x10 [ 60.590255][ T1157] ? down_write_killable+0x170/0x170 [ 60.595626][ T1157] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.601162][ T1157] ext4_map_blocks+0x4cb/0x1640 [ 60.607825][ T1157] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.613009][ T1157] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.618554][ T1157] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.624549][ T1157] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.630024][ T1157] ext4_writepages+0x1a7b/0x33c0 [ 60.634970][ T1157] ? lock_release+0x7c0/0x800 [ 60.639687][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.645351][ T1157] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.651028][ T1157] ? do_writepages+0xfa/0x2a0 [ 60.651505][ T6816] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6816 [ 60.655700][ T1157] do_writepages+0xfa/0x2a0 [ 60.655720][ T1157] ? page_writeback_cpu_online+0x10/0x10 [ 60.655735][ T1157] ? do_raw_spin_lock+0x120/0x2d0 [ 60.655749][ T1157] ? do_raw_spin_unlock+0x171/0x260 [ 60.655765][ T1157] ? _raw_spin_unlock+0x24/0x40 [ 60.655784][ T1157] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.665144][ T6816] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.669641][ T1157] ? collapse_file+0x35a2/0x4330 [ 60.669654][ T1157] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.669677][ T1157] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.669691][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.669712][ T1157] collapse_file+0x35ac/0x4330 [ 60.669743][ T1157] ? collapse_huge_page+0x4350/0x4350 [ 60.669756][ T1157] ? khugepaged+0x2506/0x3fc0 [ 60.669785][ T1157] ? xas_find+0x31a/0x880 [ 60.743215][ T1157] ? check_preemption_disabled+0x38/0x220 [ 60.748922][ T1157] khugepaged+0x3041/0x3fc0 [ 60.753432][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.759060][ T1157] ? lock_downgrade+0x840/0x840 [ 60.763893][ T1157] ? finish_wait+0x260/0x260 [ 60.768486][ T1157] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.774277][ T1157] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.780245][ T1157] ? __kthread_parkme+0x13f/0x1e0 [ 60.785256][ T1157] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.790872][ T1157] kthread+0x3b5/0x4a0 [ 60.794923][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.800644][ T1157] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.806369][ T1157] ret_from_fork+0x1f/0x30 [ 60.810792][ T6816] CPU: 1 PID: 6816 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.819041][ T6816] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.829100][ T6816] Call Trace: [ 60.832396][ T6816] dump_stack+0x18f/0x20d [ 60.837087][ T6816] check_preemption_disabled+0x20d/0x220 [ 60.842723][ T6816] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.847847][ T6816] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.853307][ T6816] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.859038][ T6816] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.864341][ T6816] ? ext4_ext_release+0x10/0x10 [ 60.869215][ T6816] ? down_write_killable+0x170/0x170 [ 60.874504][ T6816] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.879973][ T6816] ext4_map_blocks+0x4cb/0x1640 [ 60.884856][ T6816] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.890055][ T6816] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.895605][ T6816] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.901597][ T6816] ? prandom_u32_state+0xe/0x170 [ 60.906663][ T6816] ? __brelse+0x84/0xa0 [ 60.910824][ T6816] ? __ext4_new_inode+0x144/0x55e0 [ 60.915988][ T6816] ext4_getblk+0xad/0x520 [ 60.920324][ T6816] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.926049][ T6816] ? ext4_free_inode+0x1700/0x1700 [ 60.931191][ T6816] ext4_bread+0x7c/0x380 [ 60.935600][ T6816] ? ext4_getblk+0x520/0x520 [ 60.940196][ T6816] ? dquot_get_next_dqblk+0x180/0x180 [ 60.945647][ T6816] ext4_append+0x153/0x360 [ 60.950211][ T6816] ext4_mkdir+0x5e0/0xdf0 [ 60.954527][ T6816] ? ext4_rmdir+0xde0/0xde0 [ 60.959052][ T6816] ? security_inode_permission+0xc4/0xf0 [ 60.964695][ T6816] vfs_mkdir+0x419/0x690 [ 60.968947][ T6816] do_mkdirat+0x21e/0x280 [ 60.973537][ T6816] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.978380][ T6816] ? do_syscall_64+0x1c/0xe0 [ 60.982973][ T6816] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.988959][ T6816] do_syscall_64+0x60/0xe0 [ 60.993357][ T6816] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.999244][ T6816] RIP: 0033:0x45bee7 [ 61.003111][ T6816] Code: Bad RIP value. [ 61.007153][ T6816] RSP: 002b:00007ffe290d15b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.015681][ T6816] RAX: ffffffffffffffda RBX: 000000000000ecbe RCX: 000000000045bee7 [ 61.023653][ T6816] RDX: 00007ffe290d1603 RSI: 00000000000001ff RDI: 00007ffe290d1600 [ 61.032154][ T6816] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 61.040123][ T6816] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 61.048077][ T6816] R13: 00007ffe290d15f0 R14: 000000000000ecb9 R15: 00007ffe290d1600 2020/06/14 22:37:01 building call list... [ 61.326073][ T6767] tipc: TX() has been purged, node left! [ 61.827457][ T6767] ================================================================== [ 61.835669][ T6767] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 61.843553][ T6767] Write of size 1 at addr ffff8880a1cfd9e4 by task kworker/u4:8/6767 [ 61.851610][ T6767] [ 61.853946][ T6767] CPU: 0 PID: 6767 Comm: kworker/u4:8 Not tainted 5.7.0-syzkaller #0 [ 61.862097][ T6767] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.872327][ T6767] Workqueue: netns cleanup_net [ 61.877084][ T6767] Call Trace: [ 61.880385][ T6767] dump_stack+0x18f/0x20d [ 61.884716][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.890254][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.895791][ T6767] ? afs_put_call+0xa40/0xa40 [ 61.900467][ T6767] print_address_description.constprop.0.cold+0xd3/0x413 [ 61.907603][ T6767] ? vprintk_func+0x97/0x1a6 [ 61.912194][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.917734][ T6767] kasan_report.cold+0x1f/0x37 [ 61.922498][ T6767] ? rcu_read_lock_held+0x81/0xb0 [ 61.927515][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.933060][ T6767] afs_wake_up_async_call+0x6aa/0x770 [ 61.938446][ T6767] ? afs_close_socket+0x320/0x320 [ 61.943467][ T6767] ? afs_put_call+0xa40/0xa40 [ 61.948140][ T6767] rxrpc_notify_socket+0x1db/0x5d0 [ 61.953251][ T6767] ? afs_put_call+0xa40/0xa40 [ 61.958182][ T6767] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 61.966332][ T6767] rxrpc_call_completed+0xca/0xf0 [ 61.971364][ T6767] rxrpc_discard_prealloc+0x781/0xab0 [ 61.976739][ T6767] ? lock_sock_nested+0x94/0x110 [ 61.981678][ T6767] rxrpc_listen+0x147/0x360 [ 61.986178][ T6767] afs_close_socket+0x95/0x320 [ 61.990935][ T6767] ? afs_purge_servers+0x16d/0x300 [ 61.996043][ T6767] ? afs_rx_discard_new_call+0x50/0x50 [ 62.001500][ T6767] ? init_wait_var_entry+0x200/0x200 [ 62.006783][ T6767] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.012410][ T6767] ? check_preemption_disabled+0x38/0x220 [ 62.018134][ T6767] afs_net_exit+0x1bc/0x310 [ 62.022636][ T6767] ? afs_net_init+0xe30/0xe30 [ 62.027393][ T6767] ops_exit_list.isra.0+0xa8/0x150 [ 62.032505][ T6767] cleanup_net+0x511/0xa50 [ 62.036937][ T6767] ? unregister_pernet_device+0x70/0x70 [ 62.042505][ T6767] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.048502][ T6767] process_one_work+0x965/0x1690 [ 62.053451][ T6767] ? lock_release+0x800/0x800 [ 62.058125][ T6767] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.063497][ T6767] ? rwlock_bug.part.0+0x90/0x90 [ 62.068447][ T6767] worker_thread+0x96/0xe10 [ 62.073051][ T6767] ? process_one_work+0x1690/0x1690 [ 62.078245][ T6767] kthread+0x3b5/0x4a0 [ 62.082307][ T6767] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.088028][ T6767] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.093758][ T6767] ret_from_fork+0x1f/0x30 [ 62.098187][ T6767] [ 62.100512][ T6767] Allocated by task 6816: [ 62.104849][ T6767] save_stack+0x1b/0x40 [ 62.109010][ T6767] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 62.114646][ T6767] kmem_cache_alloc_trace+0x153/0x7d0 [ 62.120015][ T6767] afs_alloc_call+0x55/0x630 [ 62.124586][ T6767] afs_charge_preallocation+0xe9/0x2d0 [ 62.130138][ T6767] afs_open_socket+0x292/0x360 [ 62.134895][ T6767] afs_net_init+0xa6c/0xe30 [ 62.139389][ T6767] ops_init+0xaf/0x420 [ 62.143505][ T6767] setup_net+0x2de/0x860 [ 62.147741][ T6767] copy_net_ns+0x293/0x590 [ 62.152293][ T6767] create_new_namespaces+0x3fb/0xb30 [ 62.157569][ T6767] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 62.163188][ T6767] ksys_unshare+0x43d/0x8e0 [ 62.167686][ T6767] __x64_sys_unshare+0x2d/0x40 [ 62.172441][ T6767] do_syscall_64+0x60/0xe0 [ 62.176857][ T6767] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.182733][ T6767] [ 62.185054][ T6767] Freed by task 6767: [ 62.189060][ T6767] save_stack+0x1b/0x40 [ 62.193210][ T6767] __kasan_slab_free+0xf7/0x140 [ 62.198052][ T6767] kfree+0x109/0x2b0 [ 62.201940][ T6767] afs_put_call+0x585/0xa40 [ 62.206442][ T6767] rxrpc_discard_prealloc+0x764/0xab0 [ 62.212238][ T6767] rxrpc_listen+0x147/0x360 [ 62.216733][ T6767] afs_close_socket+0x95/0x320 [ 62.221493][ T6767] afs_net_exit+0x1bc/0x310 [ 62.225989][ T6767] ops_exit_list.isra.0+0xa8/0x150 [ 62.231092][ T6767] cleanup_net+0x511/0xa50 [ 62.235501][ T6767] process_one_work+0x965/0x1690 [ 62.240432][ T6767] worker_thread+0x96/0xe10 [ 62.244928][ T6767] kthread+0x3b5/0x4a0 [ 62.248992][ T6767] ret_from_fork+0x1f/0x30 [ 62.253479][ T6767] [ 62.255891][ T6767] The buggy address belongs to the object at ffff8880a1cfd800 [ 62.255891][ T6767] which belongs to the cache kmalloc-1k of size 1024 [ 62.269937][ T6767] The buggy address is located 484 bytes inside of [ 62.269937][ T6767] 1024-byte region [ffff8880a1cfd800, ffff8880a1cfdc00) [ 62.283305][ T6767] The buggy address belongs to the page: [ 62.288940][ T6767] page:ffffea0002873f40 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 62.298045][ T6767] flags: 0xfffe0000000200(slab) [ 62.302896][ T6767] raw: 00fffe0000000200 ffffea00026b6848 ffffea00028d8148 ffff8880aa000c40 [ 62.311477][ T6767] raw: 0000000000000000 ffff8880a1cfd000 0000000100000002 0000000000000000 [ 62.320047][ T6767] page dumped because: kasan: bad access detected [ 62.326466][ T6767] [ 62.328785][ T6767] Memory state around the buggy address: [ 62.334497][ T6767] ffff8880a1cfd880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.342579][ T6767] ffff8880a1cfd900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.350634][ T6767] >ffff8880a1cfd980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.358685][ T6767] ^ [ 62.365872][ T6767] ffff8880a1cfda00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.373933][ T6767] ffff8880a1cfda80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.381982][ T6767] ================================================================== [ 62.390049][ T6767] Disabling lock debugging due to kernel taint [ 62.396502][ T6767] Kernel panic - not syncing: panic_on_warn set ... [ 62.403168][ T6767] CPU: 0 PID: 6767 Comm: kworker/u4:8 Tainted: G B 5.7.0-syzkaller #0 [ 62.412603][ T6767] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.422650][ T6767] Workqueue: netns cleanup_net [ 62.427396][ T6767] Call Trace: [ 62.430697][ T6767] dump_stack+0x18f/0x20d [ 62.435017][ T6767] ? afs_wake_up_async_call+0x5f0/0x770 [ 62.440560][ T6767] ? afs_put_call+0xa40/0xa40 [ 62.445235][ T6767] panic+0x2e3/0x75c [ 62.449127][ T6767] ? __warn_printk+0xf3/0xf3 [ 62.453709][ T6767] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 62.459884][ T6767] ? trace_hardirqs_on+0x55/0x220 [ 62.464908][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.470440][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.475970][ T6767] ? afs_put_call+0xa40/0xa40 [ 62.480641][ T6767] end_report+0x4d/0x53 [ 62.484787][ T6767] kasan_report.cold+0xd/0x37 [ 62.489453][ T6767] ? rcu_read_lock_held+0x81/0xb0 [ 62.494465][ T6767] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.500007][ T6767] afs_wake_up_async_call+0x6aa/0x770 [ 62.505368][ T6767] ? afs_close_socket+0x320/0x320 [ 62.510380][ T6767] ? afs_put_call+0xa40/0xa40 [ 62.515087][ T6767] rxrpc_notify_socket+0x1db/0x5d0 [ 62.520191][ T6767] ? afs_put_call+0xa40/0xa40 [ 62.524863][ T6767] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.531269][ T6767] rxrpc_call_completed+0xca/0xf0 [ 62.536289][ T6767] rxrpc_discard_prealloc+0x781/0xab0 [ 62.541662][ T6767] ? lock_sock_nested+0x94/0x110 [ 62.546591][ T6767] rxrpc_listen+0x147/0x360 [ 62.551085][ T6767] afs_close_socket+0x95/0x320 [ 62.555836][ T6767] ? afs_purge_servers+0x16d/0x300 [ 62.560938][ T6767] ? afs_rx_discard_new_call+0x50/0x50 [ 62.566388][ T6767] ? init_wait_var_entry+0x200/0x200 [ 62.571689][ T6767] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.577311][ T6767] ? check_preemption_disabled+0x38/0x220 [ 62.583114][ T6767] afs_net_exit+0x1bc/0x310 [ 62.587607][ T6767] ? afs_net_init+0xe30/0xe30 [ 62.592358][ T6767] ops_exit_list.isra.0+0xa8/0x150 [ 62.597457][ T6767] cleanup_net+0x511/0xa50 [ 62.601863][ T6767] ? unregister_pernet_device+0x70/0x70 [ 62.607508][ T6767] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.613481][ T6767] process_one_work+0x965/0x1690 [ 62.618554][ T6767] ? lock_release+0x800/0x800 [ 62.623227][ T6767] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.628615][ T6767] ? rwlock_bug.part.0+0x90/0x90 [ 62.633554][ T6767] worker_thread+0x96/0xe10 [ 62.638064][ T6767] ? process_one_work+0x1690/0x1690 [ 62.643262][ T6767] kthread+0x3b5/0x4a0 [ 62.647361][ T6767] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.653076][ T6767] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.658797][ T6767] ret_from_fork+0x1f/0x30 [ 62.664682][ T6767] Kernel Offset: disabled [ 62.669037][ T6767] Rebooting in 86400 seconds..