[ 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. Starting Load/Save RF Kill Switch Status... [ 56.114900][ T6728] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6728 [ 56.124303][ T6728] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.130875][ T6728] CPU: 0 PID: 6728 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 56.139465][ T6728] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.150019][ T6728] Call Trace: [ 56.153327][ T6728] dump_stack+0x18f/0x20d [ 56.157780][ T6728] check_preemption_disabled+0x20d/0x220 [ 56.163428][ T6728] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.168559][ T6728] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.174019][ T6728] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.179736][ T6728] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.185034][ T6728] ? ext4_ext_release+0x10/0x10 [ 56.190048][ T6728] ? down_write_killable+0x170/0x170 [ 56.195327][ T6728] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.200806][ T6728] ext4_map_blocks+0x4cb/0x1640 [ 56.205662][ T6728] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.210864][ T6728] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.216510][ T6728] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.223346][ T6728] ? prandom_u32_state+0xe/0x170 [ 56.228570][ T6728] ? __brelse+0x84/0xa0 [ 56.232724][ T6728] ? __ext4_new_inode+0x144/0x55e0 [ 56.238800][ T6728] ext4_getblk+0xad/0x520 [ 56.243153][ T6728] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 56.250195][ T6728] ? ext4_free_inode+0x1700/0x1700 [ 56.255301][ T6728] ext4_bread+0x7c/0x380 [ 56.259533][ T6728] ? ext4_getblk+0x520/0x520 [ 56.264123][ T6728] ? dquot_get_next_dqblk+0x180/0x180 [ 56.269490][ T6728] ext4_append+0x153/0x360 [ 56.274256][ T6728] ext4_mkdir+0x5e0/0xdf0 [ 56.278666][ T6728] ? ext4_rmdir+0xde0/0xde0 [ 56.283168][ T6728] ? security_inode_permission+0xc4/0xf0 [ 56.288800][ T6728] vfs_mkdir+0x419/0x690 [ 56.293045][ T6728] do_mkdirat+0x21e/0x280 [ 56.297361][ T6728] ? __ia32_sys_mknod+0xb0/0xb0 [ 56.302196][ T6728] ? do_syscall_64+0x1c/0xe0 [ 56.306788][ T6728] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 56.312845][ T6728] do_syscall_64+0x60/0xe0 [ 56.317262][ T6728] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 56.323669][ T6728] RIP: 0033:0x7fa23162d687 [ 56.328101][ T6728] Code: Bad RIP value. [ 56.332147][ T6728] RSP: 002b:00007ffd8a17c868 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 56.340560][ T6728] RAX: ffffffffffffffda RBX: 000055bbafd7b985 RCX: 00007fa23162d687 [ 56.349221][ T6728] RDX: 00007ffd8a17c730 RSI: 00000000000001ed RDI: 000055bbafd7b985 [ 56.357974][ T6728] RBP: 00007fa23162d680 R08: 0000000000000100 R09: 0000000000000000 [ 56.366023][ T6728] R10: 000055bbafd7b980 R11: 0000000000000246 R12: 00000000000001ed [ 56.374113][ T6728] R13: 00007ffd8a17c9f0 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 59.024095][ T2504] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:4/2504 [ 59.033322][ T2504] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.039365][ T2504] CPU: 0 PID: 2504 Comm: kworker/u4:4 Not tainted 5.7.0-syzkaller #0 [ 59.047436][ T2504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.057785][ T2504] Workqueue: writeback wb_workfn (flush-8:0) [ 59.063830][ T2504] Call Trace: [ 59.067132][ T2504] dump_stack+0x18f/0x20d [ 59.071474][ T2504] check_preemption_disabled+0x20d/0x220 [ 59.077095][ T2504] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.082204][ T2504] ? ext4_find_extent+0x81a/0xad0 [ 59.087216][ T2504] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.092664][ T2504] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.098384][ T2504] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.103782][ T2504] ? ext4_ext_release+0x10/0x10 [ 59.109693][ T2504] ? down_write_killable+0x170/0x170 [ 59.114963][ T2504] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.120404][ T2504] ext4_map_blocks+0x4cb/0x1640 [ 59.125240][ T2504] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.130605][ T2504] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.136148][ T2504] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.142241][ T2504] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.147696][ T2504] ext4_writepages+0x1a7b/0x33c0 [ 59.152627][ T2504] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.158273][ T2504] ? __lock_acquire+0x2224/0x48b0 [ 59.163302][ T2504] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.169373][ T2504] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 59.175341][ T2504] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.181055][ T2504] ? do_writepages+0xfa/0x2a0 [ 59.185799][ T2504] do_writepages+0xfa/0x2a0 [ 59.190441][ T2504] ? page_writeback_cpu_online+0x10/0x10 [ 59.197066][ T2504] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.202602][ T2504] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.208568][ T2504] ? lock_downgrade+0x840/0x840 [ 59.213430][ T2504] __writeback_single_inode+0x12a/0x13d0 [ 59.219086][ T2504] ? _raw_spin_unlock+0x24/0x40 [ 59.223932][ T2504] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 59.229903][ T2504] writeback_sb_inodes+0x515/0xdc0 [ 59.235107][ T2504] ? __writeback_single_inode+0x13d0/0x13d0 [ 59.241192][ T2504] __writeback_inodes_wb+0xc3/0x250 [ 59.246418][ T2504] wb_writeback+0x8db/0xd50 [ 59.250922][ T2504] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 59.257241][ T2504] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 59.263247][ T2504] ? cpumask_next+0x3c/0x40 [ 59.267761][ T2504] ? get_nr_dirty_inodes+0xd6/0x130 [ 59.272958][ T2504] wb_workfn+0xab3/0x1090 [ 59.277285][ T2504] ? inode_wait_for_writeback+0x30/0x30 [ 59.282833][ T2504] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.288628][ T2504] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.294613][ T2504] process_one_work+0x965/0x1690 [ 59.299655][ T2504] ? lock_release+0x800/0x800 [ 59.304324][ T2504] ? pwq_dec_nr_in_flight+0x310/0x310 [ 59.310054][ T2504] ? rwlock_bug.part.0+0x90/0x90 [ 59.315112][ T2504] worker_thread+0x96/0xe10 [ 59.319709][ T2504] ? process_one_work+0x1690/0x1690 [ 59.324895][ T2504] kthread+0x3b5/0x4a0 [ 59.328954][ T2504] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.334651][ T2504] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 59.340441][ T2504] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.1.45' (ECDSA) to the list of known hosts. 2020/06/14 10:04:02 fuzzer started 2020/06/14 10:04:02 connecting to host at 10.128.0.26:33127 2020/06/14 10:04:02 checking machine... 2020/06/14 10:04:02 checking revisions... 2020/06/14 10:04:02 testing simple program... [ 61.303957][ T6801] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6801 [ 61.313153][ T6801] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.319042][ T6801] CPU: 1 PID: 6801 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 61.326913][ T6801] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.336962][ T6801] Call Trace: [ 61.340331][ T6801] dump_stack+0x18f/0x20d [ 61.345215][ T6801] check_preemption_disabled+0x20d/0x220 [ 61.350861][ T6801] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.355979][ T6801] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.361433][ T6801] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.367152][ T6801] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.372437][ T6801] ? ext4_ext_release+0x10/0x10 [ 61.377293][ T6801] ? down_write_killable+0x170/0x170 [ 61.382655][ T6801] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.388099][ T6801] ext4_map_blocks+0x4cb/0x1640 [ 61.392961][ T6801] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.398622][ T6801] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.404165][ T6801] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.410160][ T6801] ? prandom_u32_state+0xe/0x170 [ 61.415089][ T6801] ? __brelse+0x84/0xa0 [ 61.419575][ T6801] ? __ext4_new_inode+0x144/0x55e0 [ 61.424722][ T6801] ext4_getblk+0xad/0x520 [ 61.429069][ T6801] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.434810][ T6801] ? ext4_free_inode+0x1700/0x1700 [ 61.439958][ T6801] ext4_bread+0x7c/0x380 [ 61.444232][ T6801] ? ext4_getblk+0x520/0x520 [ 61.449715][ T6801] ? dquot_get_next_dqblk+0x180/0x180 [ 61.456507][ T6801] ext4_append+0x153/0x360 [ 61.460945][ T6801] ext4_mkdir+0x5e0/0xdf0 [ 61.465294][ T6801] ? ext4_rmdir+0xde0/0xde0 [ 61.469821][ T6801] ? security_inode_permission+0xc4/0xf0 [ 61.475483][ T6801] vfs_mkdir+0x419/0x690 [ 61.479766][ T6801] do_mkdirat+0x21e/0x280 [ 61.484111][ T6801] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.488981][ T6801] ? do_syscall_64+0x1c/0xe0 [ 61.493583][ T6801] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.499576][ T6801] do_syscall_64+0x60/0xe0 [ 61.504214][ T6801] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.510085][ T6801] RIP: 0033:0x4b02a0 [ 61.513956][ T6801] Code: Bad RIP value. [ 61.517997][ T6801] RSP: 002b:000000c0000c94b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 61.526384][ T6801] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 61.534334][ T6801] RDX: 00000000000001c0 RSI: 000000c000354920 RDI: ffffffffffffff9c [ 61.542311][ T6801] RBP: 000000c0000c9510 R08: 0000000000000000 R09: 0000000000000000 [ 61.550268][ T6801] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 61.558223][ T6801] R13: 000000000000004a R14: 0000000000000049 R15: 0000000000000100 [ 61.595610][ T6811] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6811 [ 61.605101][ T6811] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.611005][ T6811] CPU: 1 PID: 6811 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.619222][ T6811] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.629350][ T6811] Call Trace: [ 61.632802][ T6811] dump_stack+0x18f/0x20d [ 61.637152][ T6811] check_preemption_disabled+0x20d/0x220 [ 61.642780][ T6811] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.647893][ T6811] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.653776][ T6811] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.659492][ T6811] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.664777][ T6811] ? ext4_ext_release+0x10/0x10 [ 61.669625][ T6811] ? down_write_killable+0x170/0x170 [ 61.674894][ T6811] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.680347][ T6811] ext4_map_blocks+0x4cb/0x1640 [ 61.685182][ T6811] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.690358][ T6811] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.695884][ T6811] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.701869][ T6811] ? prandom_u32_state+0xe/0x170 [ 61.706815][ T6811] ? __brelse+0x84/0xa0 [ 61.710966][ T6811] ? __ext4_new_inode+0x144/0x55e0 [ 61.716071][ T6811] ext4_getblk+0xad/0x520 [ 61.720399][ T6811] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.726116][ T6811] ? ext4_free_inode+0x1700/0x1700 [ 61.731210][ T6811] ext4_bread+0x7c/0x380 [ 61.735469][ T6811] ? ext4_getblk+0x520/0x520 [ 61.740497][ T6811] ? dquot_get_next_dqblk+0x180/0x180 [ 61.745977][ T6811] ext4_append+0x153/0x360 [ 61.750561][ T6811] ext4_mkdir+0x5e0/0xdf0 [ 61.754883][ T6811] ? ext4_rmdir+0xde0/0xde0 [ 61.759390][ T6811] ? security_inode_permission+0xc4/0xf0 [ 61.765025][ T6811] vfs_mkdir+0x419/0x690 [ 61.769284][ T6811] do_mkdirat+0x21e/0x280 [ 61.773607][ T6811] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.778532][ T6811] ? do_syscall_64+0x1c/0xe0 [ 61.783110][ T6811] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.789101][ T6811] do_syscall_64+0x60/0xe0 [ 61.793526][ T6811] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.799424][ T6811] RIP: 0033:0x45bee7 [ 61.803299][ T6811] Code: Bad RIP value. [ 61.807374][ T6811] RSP: 002b:00007fffb39aea78 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 61.815790][ T6811] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 61.823761][ T6811] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fffb39aec50 [ 61.831721][ T6811] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000003740 [ 61.839674][ T6811] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 61.847726][ T6811] R13: 00007fffb39aec50 R14: 8421084210842109 R15: 00007fffb39aec5c [ 61.949163][ T6812] IPVS: ftp: loaded support on port[0] = 21 [ 61.987672][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 61.999814][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.006010][ T1153] CPU: 0 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.013899][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.024033][ T1153] Call Trace: [ 62.027752][ T1153] dump_stack+0x18f/0x20d [ 62.032066][ T1153] check_preemption_disabled+0x20d/0x220 [ 62.037732][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.040418][ T6812] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6812 [ 62.042854][ T1153] ? ext4_find_extent+0x81a/0xad0 [ 62.042908][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.042923][ T1153] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.042948][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.052311][ T6812] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.057313][ T1153] ? ext4_ext_release+0x10/0x10 [ 62.057345][ T1153] ? down_write_killable+0x170/0x170 [ 62.057356][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.057378][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 62.057399][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.057421][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.057441][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.118026][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.123474][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 62.128413][ T1153] ? lock_release+0x7c0/0x800 [ 62.133102][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.141697][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.147331][ T1153] ? do_writepages+0xfa/0x2a0 [ 62.152005][ T1153] do_writepages+0xfa/0x2a0 [ 62.156496][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 62.163673][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 62.168705][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 62.173887][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 62.178722][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 62.184425][ T1153] ? collapse_file+0x35a2/0x4330 [ 62.189347][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 62.195402][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 62.200596][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.207514][ T1153] collapse_file+0x35ac/0x4330 [ 62.212275][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 62.217630][ T1153] ? khugepaged+0x2506/0x3fc0 [ 62.222318][ T1153] ? xas_find+0x31a/0x880 [ 62.226630][ T1153] ? check_preemption_disabled+0x38/0x220 [ 62.232348][ T1153] khugepaged+0x3041/0x3fc0 [ 62.236860][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.242485][ T1153] ? lock_downgrade+0x840/0x840 [ 62.247403][ T1153] ? finish_wait+0x260/0x260 [ 62.252021][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 62.257837][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.263828][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 62.270234][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 62.275863][ T1153] kthread+0x3b5/0x4a0 [ 62.279927][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.285639][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.291353][ T1153] ret_from_fork+0x1f/0x30 [ 62.295768][ T6812] CPU: 1 PID: 6812 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.304048][ T6812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.315845][ T6812] Call Trace: [ 62.319146][ T6812] dump_stack+0x18f/0x20d [ 62.323497][ T6812] check_preemption_disabled+0x20d/0x220 [ 62.329132][ T6812] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.334432][ T6812] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.340853][ T6812] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.346898][ T6812] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.352201][ T6812] ? ext4_ext_release+0x10/0x10 [ 62.357072][ T6812] ? down_write_killable+0x170/0x170 [ 62.362356][ T6812] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.367805][ T6812] ext4_map_blocks+0x4cb/0x1640 [ 62.372653][ T6812] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.377828][ T6812] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.383367][ T6812] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.389320][ T6812] ? prandom_u32_state+0xe/0x170 [ 62.394259][ T6812] ? __brelse+0x84/0xa0 [ 62.398753][ T6812] ? __ext4_new_inode+0x144/0x55e0 [ 62.403843][ T6812] ext4_getblk+0xad/0x520 [ 62.408154][ T6812] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.413852][ T6812] ? ext4_free_inode+0x1700/0x1700 [ 62.418944][ T6812] ext4_bread+0x7c/0x380 [ 62.423164][ T6812] ? ext4_getblk+0x520/0x520 [ 62.427745][ T6812] ? dquot_get_next_dqblk+0x180/0x180 [ 62.433137][ T6812] ext4_append+0x153/0x360 [ 62.437573][ T6812] ext4_mkdir+0x5e0/0xdf0 [ 62.441911][ T6812] ? ext4_rmdir+0xde0/0xde0 [ 62.446420][ T6812] ? security_inode_permission+0xc4/0xf0 [ 62.452145][ T6812] vfs_mkdir+0x419/0x690 [ 62.456402][ T6812] do_mkdirat+0x21e/0x280 [ 62.460722][ T6812] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.465576][ T6812] ? do_syscall_64+0x1c/0xe0 [ 62.470148][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.476122][ T6812] do_syscall_64+0x60/0xe0 [ 62.481157][ T6812] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.487041][ T6812] RIP: 0033:0x45bee7 [ 62.491341][ T6812] Code: Bad RIP value. [ 62.495382][ T6812] RSP: 002b:00007fffb39ae968 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 62.503771][ T6812] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 62.511746][ T6812] RDX: 00007fffb39ae9b3 RSI: 00000000000001ff RDI: 00007fffb39ae9b0 [ 62.519727][ T6812] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 62.527693][ T6812] R10: 0000000000000064 R11: 0000000000000202 R12: 00000000004185d0 [ 62.535657][ T6812] R13: 00007fffb39ae9a0 R14: 0000000000000000 R15: 00007fffb39ae9b0 [ 62.594506][ T6812] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6812 [ 62.604008][ T6812] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.610352][ T6812] CPU: 0 PID: 6812 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 62.619378][ T6812] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.630561][ T6812] Call Trace: [ 62.634464][ T6812] dump_stack+0x18f/0x20d [ 62.636240][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 62.639753][ T6812] check_preemption_disabled+0x20d/0x220 [ 62.648854][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.654393][ T6812] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.654419][ T6812] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.654432][ T6812] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 62.654455][ T6812] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.654479][ T6812] ? ext4_ext_release+0x10/0x10 [ 62.654511][ T6812] ? down_write_killable+0x170/0x170 [ 62.654527][ T6812] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.697796][ T6812] ext4_map_blocks+0x4cb/0x1640 [ 62.703678][ T6812] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.708949][ T6812] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.716947][ T6812] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.723971][ T6812] ? prandom_u32_state+0xe/0x170 [ 62.729346][ T6812] ? __brelse+0x84/0xa0 [ 62.733489][ T6812] ? __ext4_new_inode+0x144/0x55e0 [ 62.738598][ T6812] ext4_getblk+0xad/0x520 [ 62.742927][ T6812] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 62.748639][ T6812] ? ext4_free_inode+0x1700/0x1700 [ 62.753999][ T6812] ext4_bread+0x7c/0x380 [ 62.758340][ T6812] ? ext4_getblk+0x520/0x520 [ 62.762926][ T6812] ? dquot_get_next_dqblk+0x180/0x180 [ 62.768465][ T6812] ext4_append+0x153/0x360 [ 62.772892][ T6812] ext4_mkdir+0x5e0/0xdf0 [ 62.777362][ T6812] ? ext4_rmdir+0xde0/0xde0 [ 62.781879][ T6812] ? security_inode_permission+0xc4/0xf0 [ 62.788404][ T6812] vfs_mkdir+0x419/0x690 [ 62.792851][ T6812] do_mkdirat+0x21e/0x280 [ 62.797195][ T6812] ? __ia32_sys_mknod+0xb0/0xb0 [ 62.802032][ T6812] ? do_syscall_64+0x1c/0xe0 [ 62.806618][ T6812] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 62.812752][ T6812] do_syscall_64+0x60/0xe0 [ 62.817281][ T6812] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.823369][ T6812] RIP: 0033:0x45bee7 [ 62.827268][ T6812] Code: Bad RIP value. [ 62.831316][ T6812] RSP: 002b:00007fffb39ae968 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 [ 62.839710][ T6812] RAX: ffffffffffffffda RBX: 000000000000f472 RCX: 000000000045bee7 [ 62.847702][ T6812] RDX: 00007fffb39ae9b3 RSI: 00000000000001ff RDI: 00007fffb39ae9b0 [ 62.855839][ T6812] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 62.863804][ T6812] R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000003 [ 62.872193][ T6812] R13: 00007fffb39ae9a0 R14: 000000000000f464 R15: 00007fffb39ae9b0 [ 62.880194][ T1153] CPU: 1 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 62.888105][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.898637][ T1153] Call Trace: [ 62.901950][ T1153] dump_stack+0x18f/0x20d [ 62.906992][ T1153] check_preemption_disabled+0x20d/0x220 [ 62.912659][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 62.917816][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 62.924592][ T1153] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 62.930775][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 62.936079][ T1153] ? ext4_ext_release+0x10/0x10 [ 62.940999][ T1153] ? down_write_killable+0x170/0x170 [ 62.946395][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 62.951872][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 62.956738][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 62.961943][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 62.967473][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.973438][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 62.978903][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 62.983844][ T1153] ? lock_release+0x7c0/0x800 [ 62.988648][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.994290][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 62.999910][ T1153] ? do_writepages+0xfa/0x2a0 [ 63.004568][ T1153] do_writepages+0xfa/0x2a0 [ 63.009062][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 63.014676][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 63.020450][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 63.025666][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 63.030514][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.036368][ T1153] ? collapse_file+0x35a2/0x4330 [ 63.041307][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 63.047385][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.052586][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.058552][ T1153] collapse_file+0x35ac/0x4330 [ 63.063318][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 63.068675][ T1153] ? khugepaged+0x2506/0x3fc0 [ 63.073346][ T1153] ? xas_find+0x31a/0x880 [ 63.077674][ T1153] ? check_preemption_disabled+0x38/0x220 [ 63.083381][ T1153] khugepaged+0x3041/0x3fc0 [ 63.087884][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.093501][ T1153] ? lock_downgrade+0x840/0x840 [ 63.098336][ T1153] ? finish_wait+0x260/0x260 [ 63.103100][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.108889][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.114894][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 63.119916][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.125553][ T1153] kthread+0x3b5/0x4a0 [ 63.129609][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.135423][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.141126][ T1153] ret_from_fork+0x1f/0x30 2020/06/14 10:04:04 building call list... [ 63.208573][ T1153] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1153 [ 63.217711][ T1153] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.223752][ T1153] CPU: 1 PID: 1153 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 63.231750][ T1153] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 63.242164][ T1153] Call Trace: [ 63.245462][ T1153] dump_stack+0x18f/0x20d [ 63.249804][ T1153] check_preemption_disabled+0x20d/0x220 [ 63.255449][ T1153] ext4_mb_new_blocks+0xa4d/0x3b70 [ 63.260578][ T1153] ? ext4_ext_search_right+0x2ca/0xb20 [ 63.266946][ T1153] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 63.273122][ T1153] ext4_ext_map_blocks+0x201b/0x33e0 [ 63.278414][ T1153] ? ext4_ext_release+0x10/0x10 [ 63.283474][ T1153] ? down_write_killable+0x170/0x170 [ 63.288775][ T1153] ? ext4_es_lookup_extent+0x41d/0xd10 [ 63.294250][ T1153] ext4_map_blocks+0x4cb/0x1640 [ 63.299114][ T1153] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 63.304316][ T1153] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 63.309862][ T1153] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 63.316013][ T1153] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 63.321524][ T1153] ext4_writepages+0x1a7b/0x33c0 [ 63.326481][ T1153] ? lock_release+0x7c0/0x800 [ 63.331700][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 63.337362][ T1153] ? __ext4_mark_inode_dirty+0x940/0x940 [ 63.343028][ T1153] ? do_writepages+0xfa/0x2a0 [ 63.347709][ T1153] do_writepages+0xfa/0x2a0 [ 63.352238][ T1153] ? page_writeback_cpu_online+0x10/0x10 [ 63.357867][ T1153] ? do_raw_spin_lock+0x120/0x2d0 [ 63.362891][ T1153] ? do_raw_spin_unlock+0x171/0x260 [ 63.368085][ T1153] ? _raw_spin_unlock+0x24/0x40 [ 63.372942][ T1153] __filemap_fdatawrite_range+0x2aa/0x390 [ 63.380032][ T1153] ? collapse_file+0x35a2/0x4330 [ 63.384972][ T1153] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 63.391048][ T1153] ? _raw_spin_unlock_irq+0x1f/0x80 [ 63.396256][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.402280][ T1153] collapse_file+0x35ac/0x4330 [ 63.407070][ T1153] ? collapse_huge_page+0x4350/0x4350 [ 63.412455][ T1153] ? khugepaged+0x2506/0x3fc0 [ 63.417165][ T1153] ? xas_find+0x31a/0x880 [ 63.421520][ T1153] ? check_preemption_disabled+0x38/0x220 [ 63.427252][ T1153] khugepaged+0x3041/0x3fc0 [ 63.431778][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.437418][ T1153] ? lock_downgrade+0x840/0x840 [ 63.442286][ T1153] ? finish_wait+0x260/0x260 [ 63.446875][ T1153] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 63.452683][ T1153] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 63.458666][ T1153] ? __kthread_parkme+0x13f/0x1e0 [ 63.463688][ T1153] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 63.469314][ T1153] kthread+0x3b5/0x4a0 [ 63.473379][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.479189][ T1153] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.484916][ T1153] ret_from_fork+0x1f/0x30 [ 63.702284][ T2504] tipc: TX() has been purged, node left! executing program [ 64.184551][ T2504] ================================================================== [ 64.192812][ T2504] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 64.200804][ T2504] Write of size 1 at addr ffff8880a24891e4 by task kworker/u4:4/2504 [ 64.208858][ T2504] [ 64.211197][ T2504] CPU: 0 PID: 2504 Comm: kworker/u4:4 Not tainted 5.7.0-syzkaller #0 [ 64.219260][ T2504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.229333][ T2504] Workqueue: netns cleanup_net [ 64.234136][ T2504] Call Trace: [ 64.237440][ T2504] dump_stack+0x18f/0x20d [ 64.241771][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.248182][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.253720][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.258401][ T2504] print_address_description.constprop.0.cold+0xd3/0x413 [ 64.265522][ T2504] ? vprintk_func+0x97/0x1a6 [ 64.270113][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.275654][ T2504] kasan_report.cold+0x1f/0x37 [ 64.280418][ T2504] ? rcu_read_lock_held+0x81/0xb0 [ 64.285458][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.291026][ T2504] afs_wake_up_async_call+0x6aa/0x770 [ 64.296398][ T2504] ? afs_close_socket+0x320/0x320 [ 64.301423][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.306450][ T2504] rxrpc_notify_socket+0x1db/0x5d0 [ 64.311651][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.316325][ T2504] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 64.322738][ T2504] rxrpc_call_completed+0xca/0xf0 [ 64.327766][ T2504] rxrpc_discard_prealloc+0x781/0xab0 [ 64.333137][ T2504] ? lock_sock_nested+0x94/0x110 [ 64.338076][ T2504] rxrpc_listen+0x147/0x360 [ 64.342582][ T2504] afs_close_socket+0x95/0x320 [ 64.347340][ T2504] ? afs_purge_servers+0x16d/0x300 [ 64.352448][ T2504] ? afs_rx_discard_new_call+0x50/0x50 [ 64.357906][ T2504] ? init_wait_var_entry+0x200/0x200 [ 64.363192][ T2504] ? rcu_read_lock_held_common+0xa0/0xa0 [ 64.368907][ T2504] ? check_preemption_disabled+0x38/0x220 [ 64.374631][ T2504] afs_net_exit+0x1bc/0x310 [ 64.379131][ T2504] ? afs_net_init+0xe30/0xe30 [ 64.383801][ T2504] ops_exit_list.isra.0+0xa8/0x150 [ 64.388910][ T2504] cleanup_net+0x511/0xa50 [ 64.393326][ T2504] ? unregister_pernet_device+0x70/0x70 [ 64.398899][ T2504] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.404968][ T2504] process_one_work+0x965/0x1690 [ 64.410264][ T2504] ? lock_release+0x800/0x800 [ 64.414940][ T2504] ? pwq_dec_nr_in_flight+0x310/0x310 [ 64.420313][ T2504] ? rwlock_bug.part.0+0x90/0x90 [ 64.425261][ T2504] worker_thread+0x96/0xe10 [ 64.429782][ T2504] ? process_one_work+0x1690/0x1690 [ 64.434977][ T2504] kthread+0x3b5/0x4a0 [ 64.439067][ T2504] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.444779][ T2504] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 64.450500][ T2504] ret_from_fork+0x1f/0x30 [ 64.454924][ T2504] [ 64.457250][ T2504] Allocated by task 6812: [ 64.461578][ T2504] save_stack+0x1b/0x40 [ 64.465729][ T2504] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 64.471363][ T2504] kmem_cache_alloc_trace+0x153/0x7d0 [ 64.476911][ T2504] afs_alloc_call+0x55/0x630 [ 64.481594][ T2504] afs_charge_preallocation+0xe9/0x2d0 [ 64.487064][ T2504] afs_open_socket+0x292/0x360 [ 64.492031][ T2504] afs_net_init+0xa6c/0xe30 [ 64.496527][ T2504] ops_init+0xaf/0x420 [ 64.500587][ T2504] setup_net+0x2de/0x860 [ 64.504829][ T2504] copy_net_ns+0x293/0x590 [ 64.509242][ T2504] create_new_namespaces+0x3fb/0xb30 [ 64.514530][ T2504] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 64.520153][ T2504] ksys_unshare+0x43d/0x8e0 [ 64.524650][ T2504] __x64_sys_unshare+0x2d/0x40 [ 64.530139][ T2504] do_syscall_64+0x60/0xe0 [ 64.534560][ T2504] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 64.540443][ T2504] [ 64.542767][ T2504] Freed by task 2504: [ 64.546746][ T2504] save_stack+0x1b/0x40 [ 64.550909][ T2504] __kasan_slab_free+0xf7/0x140 [ 64.555752][ T2504] kfree+0x109/0x2b0 [ 64.559644][ T2504] afs_put_call+0x585/0xa40 [ 64.564143][ T2504] rxrpc_discard_prealloc+0x764/0xab0 [ 64.569680][ T2504] rxrpc_listen+0x147/0x360 [ 64.574172][ T2504] afs_close_socket+0x95/0x320 [ 64.578930][ T2504] afs_net_exit+0x1bc/0x310 [ 64.583439][ T2504] ops_exit_list.isra.0+0xa8/0x150 [ 64.588761][ T2504] cleanup_net+0x511/0xa50 [ 64.593171][ T2504] process_one_work+0x965/0x1690 [ 64.598098][ T2504] worker_thread+0x96/0xe10 [ 64.602591][ T2504] kthread+0x3b5/0x4a0 [ 64.607195][ T2504] ret_from_fork+0x1f/0x30 [ 64.611594][ T2504] [ 64.613917][ T2504] The buggy address belongs to the object at ffff8880a2489000 [ 64.613917][ T2504] which belongs to the cache kmalloc-1k of size 1024 [ 64.627972][ T2504] The buggy address is located 484 bytes inside of [ 64.627972][ T2504] 1024-byte region [ffff8880a2489000, ffff8880a2489400) [ 64.641325][ T2504] The buggy address belongs to the page: [ 64.647061][ T2504] page:ffffea0002892240 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 64.656253][ T2504] flags: 0xfffe0000000200(slab) [ 64.661118][ T2504] raw: 00fffe0000000200 ffffea00027bcf48 ffffea00027c5088 ffff8880aa000c40 [ 64.669702][ T2504] raw: 0000000000000000 ffff8880a2489000 0000000100000002 0000000000000000 [ 64.678275][ T2504] page dumped because: kasan: bad access detected [ 64.684676][ T2504] [ 64.686995][ T2504] Memory state around the buggy address: [ 64.692647][ T2504] ffff8880a2489080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.700706][ T2504] ffff8880a2489100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.708808][ T2504] >ffff8880a2489180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.716866][ T2504] ^ [ 64.724064][ T2504] ffff8880a2489200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.732131][ T2504] ffff8880a2489280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 64.740204][ T2504] ================================================================== [ 64.748338][ T2504] Disabling lock debugging due to kernel taint [ 64.754571][ T2504] Kernel panic - not syncing: panic_on_warn set ... [ 64.761256][ T2504] CPU: 0 PID: 2504 Comm: kworker/u4:4 Tainted: G B 5.7.0-syzkaller #0 [ 64.770731][ T2504] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 64.781398][ T2504] Workqueue: netns cleanup_net [ 64.786154][ T2504] Call Trace: [ 64.789444][ T2504] dump_stack+0x18f/0x20d [ 64.793775][ T2504] ? afs_wake_up_async_call+0x5f0/0x770 [ 64.799323][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.803994][ T2504] panic+0x2e3/0x75c [ 64.808238][ T2504] ? __warn_printk+0xf3/0xf3 [ 64.813103][ T2504] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 64.819271][ T2504] ? trace_hardirqs_on+0x55/0x220 [ 64.824741][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.830275][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.835834][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.840516][ T2504] end_report+0x4d/0x53 [ 64.847023][ T2504] kasan_report.cold+0xd/0x37 [ 64.851694][ T2504] ? rcu_read_lock_held+0x81/0xb0 [ 64.856720][ T2504] ? afs_wake_up_async_call+0x6aa/0x770 [ 64.862443][ T2504] afs_wake_up_async_call+0x6aa/0x770 [ 64.867799][ T2504] ? afs_close_socket+0x320/0x320 [ 64.872907][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.877587][ T2504] rxrpc_notify_socket+0x1db/0x5d0 [ 64.883258][ T2504] ? afs_put_call+0xa40/0xa40 [ 64.887924][ T2504] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 64.894339][ T2504] rxrpc_call_completed+0xca/0xf0 [ 64.899376][ T2504] rxrpc_discard_prealloc+0x781/0xab0 [ 64.904733][ T2504] ? lock_sock_nested+0x94/0x110 [ 64.909827][ T2504] rxrpc_listen+0x147/0x360 [ 64.914329][ T2504] afs_close_socket+0x95/0x320 [ 64.919188][ T2504] ? afs_purge_servers+0x16d/0x300 [ 64.924301][ T2504] ? afs_rx_discard_new_call+0x50/0x50 [ 64.929766][ T2504] ? init_wait_var_entry+0x200/0x200 [ 64.935056][ T2504] ? rcu_read_lock_held_common+0xa0/0xa0 [ 64.940676][ T2504] ? check_preemption_disabled+0x38/0x220 [ 64.946404][ T2504] afs_net_exit+0x1bc/0x310 [ 64.951632][ T2504] ? afs_net_init+0xe30/0xe30 [ 64.956361][ T2504] ops_exit_list.isra.0+0xa8/0x150 [ 64.961469][ T2504] cleanup_net+0x511/0xa50 [ 64.965878][ T2504] ? unregister_pernet_device+0x70/0x70 [ 64.971422][ T2504] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 64.977406][ T2504] process_one_work+0x965/0x1690 [ 64.982358][ T2504] ? lock_release+0x800/0x800 [ 64.987286][ T2504] ? pwq_dec_nr_in_flight+0x310/0x310 [ 64.996742][ T2504] ? rwlock_bug.part.0+0x90/0x90 [ 65.001684][ T2504] worker_thread+0x96/0xe10 [ 65.006194][ T2504] ? process_one_work+0x1690/0x1690 [ 65.012188][ T2504] kthread+0x3b5/0x4a0 [ 65.016610][ T2504] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.022509][ T2504] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 65.028222][ T2504] ret_from_fork+0x1f/0x30 [ 65.034083][ T2504] Kernel Offset: disabled [ 65.038403][ T2504] Rebooting in 86400 seconds..