[ 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... [ OK ] Started Update UTMP about System Runlevel Changes. Starting Load/Save RF Kill Switch Status... [ 53.646011][ T6733] BUG: using smp_processor_id() in preemptible [00000000] code: systemd-rfkill/6733 [ 53.655881][ T6733] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.662349][ T6733] CPU: 0 PID: 6733 Comm: systemd-rfkill Not tainted 5.7.0-syzkaller #0 [ 53.672150][ T6733] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 53.682189][ T6733] Call Trace: [ 53.685637][ T6733] dump_stack+0x18f/0x20d [ 53.689961][ T6733] check_preemption_disabled+0x20d/0x220 [ 53.695585][ T6733] ext4_mb_new_blocks+0xa4d/0x3b70 [ 53.700688][ T6733] ? ext4_ext_search_right+0x2ca/0xb20 [ 53.706219][ T6733] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 53.711924][ T6733] ext4_ext_map_blocks+0x201b/0x33e0 [ 53.717216][ T6733] ? ext4_ext_release+0x10/0x10 [ 53.722150][ T6733] ? down_write_killable+0x170/0x170 [ 53.727506][ T6733] ? ext4_es_lookup_extent+0x41d/0xd10 [ 53.732992][ T6733] ext4_map_blocks+0x4cb/0x1640 [ 53.737982][ T6733] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 53.743281][ T6733] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 53.748943][ T6733] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 53.754942][ T6733] ? prandom_u32_state+0xe/0x170 [ 53.759951][ T6733] ? __brelse+0x84/0xa0 [ 53.764096][ T6733] ? __ext4_new_inode+0x144/0x55e0 [ 53.769374][ T6733] ext4_getblk+0xad/0x520 [ 53.773886][ T6733] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 53.779600][ T6733] ? ext4_free_inode+0x1700/0x1700 [ 53.784701][ T6733] ext4_bread+0x7c/0x380 [ 53.788937][ T6733] ? ext4_getblk+0x520/0x520 [ 53.793595][ T6733] ? dquot_get_next_dqblk+0x180/0x180 [ 53.798954][ T6733] ext4_append+0x153/0x360 [ 53.803790][ T6733] ext4_mkdir+0x5e0/0xdf0 [ 53.808132][ T6733] ? ext4_rmdir+0xde0/0xde0 [ 53.812633][ T6733] ? security_inode_permission+0xc4/0xf0 [ 53.818276][ T6733] vfs_mkdir+0x419/0x690 [ 53.822510][ T6733] do_mkdirat+0x21e/0x280 [ 53.826843][ T6733] ? __ia32_sys_mknod+0xb0/0xb0 [ 53.831716][ T6733] ? do_syscall_64+0x1c/0xe0 [ 53.836315][ T6733] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 53.842284][ T6733] do_syscall_64+0x60/0xe0 [ 53.846735][ T6733] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 53.852613][ T6733] RIP: 0033:0x7fcf8d7b6687 [ 53.857009][ T6733] Code: Bad RIP value. [ 53.861068][ T6733] RSP: 002b:00007ffcb8ed9b88 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 53.869462][ T6733] RAX: ffffffffffffffda RBX: 000055a34cbae985 RCX: 00007fcf8d7b6687 [ 53.877435][ T6733] RDX: 00007ffcb8ed9a50 RSI: 00000000000001ed RDI: 000055a34cbae985 [ 53.885388][ T6733] RBP: 00007fcf8d7b6680 R08: 0000000000000100 R09: 0000000000000000 [ 53.893354][ T6733] R10: 000055a34cbae980 R11: 0000000000000246 R12: 00000000000001ed [ 53.901331][ T6733] R13: 00007ffcb8ed9d10 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 55.841774][ T6749] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:6/6749 [ 55.851065][ T6749] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.856942][ T6749] CPU: 1 PID: 6749 Comm: kworker/u4:6 Not tainted 5.7.0-syzkaller #0 [ 55.865076][ T6749] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 55.875120][ T6749] Workqueue: writeback wb_workfn (flush-8:0) [ 55.881089][ T6749] Call Trace: [ 55.884371][ T6749] dump_stack+0x18f/0x20d [ 55.888700][ T6749] check_preemption_disabled+0x20d/0x220 [ 55.894326][ T6749] ext4_mb_new_blocks+0xa4d/0x3b70 [ 55.899599][ T6749] ? ext4_find_extent+0x81a/0xad0 [ 55.904627][ T6749] ? ext4_ext_search_right+0x2ca/0xb20 [ 55.910416][ T6749] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 55.916484][ T6749] ext4_ext_map_blocks+0x201b/0x33e0 [ 55.921819][ T6749] ? ext4_ext_release+0x10/0x10 [ 55.926778][ T6749] ? down_write_killable+0x170/0x170 [ 55.932152][ T6749] ? ext4_es_lookup_extent+0x41d/0xd10 [ 55.937783][ T6749] ext4_map_blocks+0x4cb/0x1640 [ 55.942662][ T6749] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 55.947942][ T6749] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 55.953471][ T6749] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 55.959694][ T6749] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 55.965333][ T6749] ext4_writepages+0x1a7b/0x33c0 [ 55.970365][ T6749] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.976196][ T6749] ? __lock_acquire+0x2224/0x48b0 [ 55.981234][ T6749] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.987442][ T6749] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 55.993425][ T6749] ? __ext4_mark_inode_dirty+0x940/0x940 [ 55.999449][ T6749] ? do_writepages+0xfa/0x2a0 [ 56.004103][ T6749] do_writepages+0xfa/0x2a0 [ 56.008637][ T6749] ? page_writeback_cpu_online+0x10/0x10 [ 56.014252][ T6749] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.019784][ T6749] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.025738][ T6749] ? lock_downgrade+0x840/0x840 [ 56.030580][ T6749] __writeback_single_inode+0x12a/0x13d0 [ 56.036201][ T6749] ? _raw_spin_unlock+0x24/0x40 [ 56.041201][ T6749] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.047165][ T6749] writeback_sb_inodes+0x515/0xdc0 [ 56.052271][ T6749] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.058229][ T6749] __writeback_inodes_wb+0xc3/0x250 [ 56.063632][ T6749] wb_writeback+0x8db/0xd50 [ 56.068220][ T6749] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.074536][ T6749] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.080525][ T6749] ? cpumask_next+0x3c/0x40 [ 56.085051][ T6749] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.090238][ T6749] wb_workfn+0xab3/0x1090 [ 56.094565][ T6749] ? inode_wait_for_writeback+0x30/0x30 [ 56.100105][ T6749] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.105637][ T6749] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.111601][ T6749] process_one_work+0x965/0x1690 [ 56.116561][ T6749] ? lock_release+0x800/0x800 [ 56.121258][ T6749] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.126765][ T6749] ? rwlock_bug.part.0+0x90/0x90 [ 56.131713][ T6749] worker_thread+0x96/0xe10 [ 56.136214][ T6749] ? process_one_work+0x1690/0x1690 [ 56.141404][ T6749] kthread+0x3b5/0x4a0 [ 56.145453][ T6749] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.152019][ T6749] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.157753][ T6749] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.0.33' (ECDSA) to the list of known hosts. 2020/06/14 23:38:47 fuzzer started 2020/06/14 23:38:48 connecting to host at 10.128.0.26:44503 2020/06/14 23:38:48 checking machine... 2020/06/14 23:38:48 checking revisions... 2020/06/14 23:38:48 testing simple program... [ 59.177064][ T6809] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6809 [ 59.191002][ T6809] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.197764][ T6809] CPU: 1 PID: 6809 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 59.205655][ T6809] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.215970][ T6809] Call Trace: [ 59.228031][ T6809] dump_stack+0x18f/0x20d [ 59.233917][ T6809] check_preemption_disabled+0x20d/0x220 [ 59.240226][ T6809] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.246004][ T6809] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.251465][ T6809] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.257234][ T6809] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.262520][ T6809] ? ext4_ext_release+0x10/0x10 [ 59.267361][ T6809] ? down_write_killable+0x170/0x170 [ 59.272626][ T6809] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.278084][ T6809] ext4_map_blocks+0x4cb/0x1640 [ 59.282921][ T6809] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.288097][ T6809] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.293639][ T6809] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.299598][ T6809] ? prandom_u32_state+0xe/0x170 [ 59.304533][ T6809] ? __brelse+0x84/0xa0 [ 59.308666][ T6809] ? __ext4_new_inode+0x144/0x55e0 [ 59.313770][ T6809] ext4_getblk+0xad/0x520 [ 59.318085][ T6809] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.323807][ T6809] ? ext4_free_inode+0x1700/0x1700 [ 59.328906][ T6809] ext4_bread+0x7c/0x380 [ 59.333156][ T6809] ? ext4_getblk+0x520/0x520 [ 59.337724][ T6809] ? dquot_get_next_dqblk+0x180/0x180 [ 59.343079][ T6809] ext4_append+0x153/0x360 [ 59.347481][ T6809] ext4_mkdir+0x5e0/0xdf0 [ 59.351800][ T6809] ? ext4_rmdir+0xde0/0xde0 [ 59.356284][ T6809] ? security_inode_permission+0xc4/0xf0 [ 59.361901][ T6809] vfs_mkdir+0x419/0x690 [ 59.366158][ T6809] do_mkdirat+0x21e/0x280 [ 59.370481][ T6809] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.375315][ T6809] ? do_syscall_64+0x1c/0xe0 [ 59.379885][ T6809] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.385859][ T6809] do_syscall_64+0x60/0xe0 [ 59.390272][ T6809] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.396174][ T6809] RIP: 0033:0x4b02a0 [ 59.400078][ T6809] Code: Bad RIP value. [ 59.404152][ T6809] RSP: 002b:000000c0000cb4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 59.412559][ T6809] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 59.420515][ T6809] RDX: 00000000000001c0 RSI: 000000c0002f88a0 RDI: ffffffffffffff9c [ 59.428484][ T6809] RBP: 000000c0000cb510 R08: 0000000000000000 R09: 0000000000000000 [ 59.436434][ T6809] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 59.444384][ T6809] R13: 0000000000000046 R14: 0000000000000045 R15: 0000000000000100 [ 59.472352][ T6814] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6814 [ 59.481798][ T6814] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.487684][ T6814] CPU: 0 PID: 6814 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.495901][ T6814] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.505939][ T6814] Call Trace: [ 59.509240][ T6814] dump_stack+0x18f/0x20d [ 59.513567][ T6814] check_preemption_disabled+0x20d/0x220 [ 59.519186][ T6814] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.524302][ T6814] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.529754][ T6814] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.535578][ T6814] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.540896][ T6814] ? ext4_ext_release+0x10/0x10 [ 59.545746][ T6814] ? down_write_killable+0x170/0x170 [ 59.551011][ T6814] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.556451][ T6814] ext4_map_blocks+0x4cb/0x1640 [ 59.561332][ T6814] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.566509][ T6814] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.572049][ T6814] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.578008][ T6814] ? prandom_u32_state+0xe/0x170 [ 59.582951][ T6814] ? __brelse+0x84/0xa0 [ 59.587086][ T6814] ? __ext4_new_inode+0x144/0x55e0 [ 59.592460][ T6814] ext4_getblk+0xad/0x520 [ 59.596775][ T6814] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.602637][ T6814] ? ext4_free_inode+0x1700/0x1700 [ 59.607810][ T6814] ext4_bread+0x7c/0x380 [ 59.612116][ T6814] ? ext4_getblk+0x520/0x520 [ 59.616860][ T6814] ? dquot_get_next_dqblk+0x180/0x180 [ 59.622340][ T6814] ext4_append+0x153/0x360 [ 59.626745][ T6814] ext4_mkdir+0x5e0/0xdf0 [ 59.631076][ T6814] ? ext4_rmdir+0xde0/0xde0 [ 59.635573][ T6814] ? security_inode_permission+0xc4/0xf0 [ 59.641291][ T6814] vfs_mkdir+0x419/0x690 [ 59.645517][ T6814] do_mkdirat+0x21e/0x280 [ 59.649838][ T6814] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.654680][ T6814] ? do_syscall_64+0x1c/0xe0 [ 59.659262][ T6814] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.665254][ T6814] do_syscall_64+0x60/0xe0 [ 59.669675][ T6814] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.675822][ T6814] RIP: 0033:0x45bee7 [ 59.679695][ T6814] Code: Bad RIP value. [ 59.683759][ T6814] RSP: 002b:00007ffcf5052c58 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 59.692158][ T6814] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 59.700118][ T6814] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffcf5052e30 [ 59.708067][ T6814] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000033c0 [ 59.716020][ T6814] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 59.723978][ T6814] R13: 00007ffcf5052e30 R14: 8421084210842109 R15: 00007ffcf5052e3c [ 59.816155][ T6815] IPVS: ftp: loaded support on port[0] = 21 [ 59.852085][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 59.861820][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.867702][ T6815] CPU: 1 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.875917][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.886056][ T6815] Call Trace: [ 59.889422][ T6815] dump_stack+0x18f/0x20d [ 59.893788][ T6815] check_preemption_disabled+0x20d/0x220 [ 59.899413][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.904514][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.909950][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.915678][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.921490][ T6815] ? ext4_ext_release+0x10/0x10 [ 59.926344][ T6815] ? down_write_killable+0x170/0x170 [ 59.931616][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.937069][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 59.941923][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.947127][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.952656][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.958625][ T6815] ? prandom_u32_state+0xe/0x170 [ 59.963548][ T6815] ? __brelse+0x84/0xa0 [ 59.967683][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 59.972775][ T6815] ext4_getblk+0xad/0x520 [ 59.977089][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.982802][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 59.987894][ T6815] ext4_bread+0x7c/0x380 [ 59.992141][ T6815] ? ext4_getblk+0x520/0x520 [ 59.996711][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 60.002155][ T6815] ext4_append+0x153/0x360 [ 60.006561][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 60.010884][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 60.015386][ T6815] ? security_inode_permission+0xc4/0xf0 [ 60.021007][ T6815] vfs_mkdir+0x419/0x690 [ 60.025233][ T6815] do_mkdirat+0x21e/0x280 [ 60.029561][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.034408][ T6815] ? do_syscall_64+0x1c/0xe0 [ 60.039008][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.044978][ T6815] do_syscall_64+0x60/0xe0 [ 60.049503][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.055395][ T6815] RIP: 0033:0x45bee7 [ 60.059290][ T6815] Code: Bad RIP value. [ 60.063345][ T6815] RSP: 002b:00007ffcf5052b48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.072439][ T6815] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 60.080402][ T6815] RDX: 00007ffcf5052b93 RSI: 00000000000001ff RDI: 00007ffcf5052b90 [ 60.088569][ T6815] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 60.096663][ T6815] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 60.104721][ T6815] R13: 00007ffcf5052b80 R14: 0000000000000000 R15: 00007ffcf5052b90 [ 60.179245][ T6815] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6815 [ 60.188710][ T6815] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.194758][ T6815] CPU: 1 PID: 6815 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.203000][ T6815] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.213492][ T6815] Call Trace: [ 60.216800][ T6815] dump_stack+0x18f/0x20d [ 60.221202][ T6815] check_preemption_disabled+0x20d/0x220 [ 60.227073][ T6815] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.232334][ T6815] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.237805][ T6815] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.243732][ T6815] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.249318][ T6815] ? ext4_ext_release+0x10/0x10 [ 60.254200][ T6815] ? down_write_killable+0x170/0x170 [ 60.259478][ T6815] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.264921][ T6815] ext4_map_blocks+0x4cb/0x1640 [ 60.270557][ T6815] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.275911][ T6815] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.281655][ T6815] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.287715][ T6815] ? prandom_u32_state+0xe/0x170 [ 60.292728][ T6815] ? __brelse+0x84/0xa0 [ 60.297056][ T6815] ? __ext4_new_inode+0x144/0x55e0 [ 60.302260][ T6815] ext4_getblk+0xad/0x520 [ 60.307663][ T6815] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.313376][ T6815] ? ext4_free_inode+0x1700/0x1700 [ 60.318490][ T6815] ext4_bread+0x7c/0x380 [ 60.322734][ T6815] ? ext4_getblk+0x520/0x520 [ 60.327331][ T6815] ? dquot_get_next_dqblk+0x180/0x180 [ 60.332708][ T6815] ext4_append+0x153/0x360 [ 60.337117][ T6815] ext4_mkdir+0x5e0/0xdf0 [ 60.341444][ T6815] ? ext4_rmdir+0xde0/0xde0 [ 60.345956][ T6815] ? security_inode_permission+0xc4/0xf0 [ 60.351772][ T6815] vfs_mkdir+0x419/0x690 [ 60.356102][ T6815] do_mkdirat+0x21e/0x280 [ 60.360520][ T6815] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.365631][ T6815] ? do_syscall_64+0x1c/0xe0 [ 60.370288][ T6815] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 2020/06/14 23:38:49 building call list... [ 60.376772][ T6815] do_syscall_64+0x60/0xe0 [ 60.381174][ T6815] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.389755][ T6815] RIP: 0033:0x45bee7 [ 60.393664][ T6815] Code: Bad RIP value. [ 60.397723][ T6815] RSP: 002b:00007ffcf5052b48 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 60.408221][ T6815] RAX: ffffffffffffffda RBX: 000000000000eb09 RCX: 000000000045bee7 [ 60.416460][ T6815] RDX: 00007ffcf5052b93 RSI: 00000000000001ff RDI: 00007ffcf5052b90 [ 60.424617][ T6815] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 60.432586][ T6815] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 60.440540][ T6815] R13: 00007ffcf5052b80 R14: 000000000000eaf9 R15: 00007ffcf5052b90 [ 60.679531][ T21] tipc: TX() has been purged, node left! [ 60.964272][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 60.974018][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.980033][ T1155] CPU: 1 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.988059][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.998227][ T1155] Call Trace: [ 61.002834][ T1155] dump_stack+0x18f/0x20d [ 61.007556][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.013539][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.018999][ T1155] ? ext4_find_extent+0x81a/0xad0 [ 61.024214][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.029675][ T1155] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.035857][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.041786][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.047015][ T1155] ? down_write_killable+0x170/0x170 [ 61.052330][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.057907][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.062857][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.069821][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.075373][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.081458][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.087150][ T1155] ext4_writepages+0x1a7b/0x33c0 [ 61.092280][ T1155] ? lock_release+0x7c0/0x800 [ 61.096989][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.103144][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.108778][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.113485][ T1155] do_writepages+0xfa/0x2a0 [ 61.118091][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.125417][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 61.130551][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.135749][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.140908][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.146627][ T1155] ? collapse_file+0x35a2/0x4330 [ 61.151641][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.157716][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.163007][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.169760][ T1155] collapse_file+0x35ac/0x4330 [ 61.174556][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.180024][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.184906][ T1155] ? xas_find+0x31a/0x880 [ 61.189594][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.195455][ T1155] khugepaged+0x3041/0x3fc0 [ 61.200227][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.206174][ T1155] ? lock_downgrade+0x840/0x840 [ 61.211584][ T1155] ? finish_wait+0x260/0x260 [ 61.216203][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.222050][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.228047][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.233077][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.238730][ T1155] kthread+0x3b5/0x4a0 [ 61.242801][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.248541][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.254284][ T1155] ret_from_fork+0x1f/0x30 [ 61.356107][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.365246][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.371222][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.379139][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.389186][ T1155] Call Trace: [ 61.392475][ T1155] dump_stack+0x18f/0x20d [ 61.396811][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.402446][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.407566][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.413029][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.419201][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.424491][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.429370][ T1155] ? down_write_killable+0x170/0x170 [ 61.434737][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.440197][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.445082][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.450288][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.455834][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.461908][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.467378][ T1155] ext4_writepages+0x1a7b/0x33c0 [ 61.472327][ T1155] ? lock_release+0x7c0/0x800 [ 61.477018][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.482783][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.488436][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.493134][ T1155] do_writepages+0xfa/0x2a0 [ 61.497641][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.503271][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 61.508315][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.513526][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.518388][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.524108][ T1155] ? collapse_file+0x35a2/0x4330 [ 61.529052][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.535563][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.540760][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.546746][ T1155] collapse_file+0x35ac/0x4330 [ 61.551529][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.556899][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.561588][ T1155] ? xas_find+0x31a/0x880 [ 61.565917][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.571832][ T1155] khugepaged+0x3041/0x3fc0 [ 61.577170][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.583066][ T1155] ? lock_downgrade+0x840/0x840 [ 61.587915][ T1155] ? finish_wait+0x260/0x260 [ 61.592620][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 61.598429][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.604417][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.609788][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.615422][ T1155] kthread+0x3b5/0x4a0 [ 61.619498][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.625214][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.630959][ T1155] ret_from_fork+0x1f/0x30 [ 61.680322][ T1155] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1155 [ 61.689704][ T1155] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.695597][ T1155] CPU: 0 PID: 1155 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 61.703566][ T1155] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.714138][ T1155] Call Trace: [ 61.717428][ T1155] dump_stack+0x18f/0x20d [ 61.721764][ T1155] check_preemption_disabled+0x20d/0x220 [ 61.727410][ T1155] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.732538][ T1155] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.738301][ T1155] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 61.744473][ T1155] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.749770][ T1155] ? ext4_ext_release+0x10/0x10 [ 61.754823][ T1155] ? down_write_killable+0x170/0x170 [ 61.760115][ T1155] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.765587][ T1155] ext4_map_blocks+0x4cb/0x1640 [ 61.777407][ T1155] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.782616][ T1155] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.788162][ T1155] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.794157][ T1155] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 61.799623][ T1155] ext4_writepages+0x1a7b/0x33c0 [ 61.804771][ T1155] ? lock_release+0x7c0/0x800 [ 61.809553][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.815222][ T1155] ? __ext4_mark_inode_dirty+0x940/0x940 [ 61.820859][ T1155] ? do_writepages+0xfa/0x2a0 [ 61.825622][ T1155] do_writepages+0xfa/0x2a0 [ 61.830153][ T1155] ? page_writeback_cpu_online+0x10/0x10 [ 61.835785][ T1155] ? do_raw_spin_lock+0x120/0x2d0 [ 61.840812][ T1155] ? do_raw_spin_unlock+0x171/0x260 [ 61.846006][ T1155] ? _raw_spin_unlock+0x24/0x40 [ 61.850858][ T1155] __filemap_fdatawrite_range+0x2aa/0x390 [ 61.856573][ T1155] ? collapse_file+0x35a2/0x4330 [ 61.861562][ T1155] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 61.867637][ T1155] ? _raw_spin_unlock_irq+0x1f/0x80 [ 61.873006][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.879127][ T1155] collapse_file+0x35ac/0x4330 [ 61.883909][ T1155] ? collapse_huge_page+0x4350/0x4350 [ 61.889278][ T1155] ? khugepaged+0x2506/0x3fc0 [ 61.893964][ T1155] ? xas_find+0x31a/0x880 [ 61.898292][ T1155] ? check_preemption_disabled+0x38/0x220 [ 61.904013][ T1155] khugepaged+0x3041/0x3fc0 [ 61.908540][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.914180][ T1155] ? lock_downgrade+0x840/0x840 [ 61.919043][ T1155] ? finish_wait+0x260/0x260 [ 61.923977][ T1155] ? _raw_spin_unlock_irqrestore+0x62/0xe0 executing program [ 61.930236][ T1155] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.936227][ T1155] ? __kthread_parkme+0x13f/0x1e0 [ 61.941273][ T1155] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 61.947334][ T1155] kthread+0x3b5/0x4a0 [ 61.951492][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.957205][ T1155] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.962934][ T1155] ret_from_fork+0x1f/0x30 [ 62.091453][ T21] ================================================================== [ 62.100293][ T21] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 62.108792][ T21] Write of size 1 at addr ffff88809f8721e4 by task kworker/u4:1/21 [ 62.116668][ T21] [ 62.119142][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 62.127048][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.137109][ T21] Workqueue: netns cleanup_net [ 62.141856][ T21] Call Trace: [ 62.145301][ T21] dump_stack+0x18f/0x20d [ 62.149665][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.155209][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.160751][ T21] ? afs_put_call+0xa40/0xa40 [ 62.165432][ T21] print_address_description.constprop.0.cold+0xd3/0x413 [ 62.172457][ T21] ? vprintk_func+0x97/0x1a6 [ 62.177051][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.182606][ T21] kasan_report.cold+0x1f/0x37 [ 62.187390][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 62.192411][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.197956][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 62.203327][ T21] ? afs_close_socket+0x320/0x320 [ 62.208352][ T21] ? afs_put_call+0xa40/0xa40 [ 62.213146][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 62.218262][ T21] ? afs_put_call+0xa40/0xa40 [ 62.222943][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.229556][ T21] rxrpc_call_completed+0xca/0xf0 [ 62.234591][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 62.240056][ T21] ? lock_sock_nested+0x94/0x110 [ 62.244999][ T21] rxrpc_listen+0x147/0x360 [ 62.249592][ T21] afs_close_socket+0x95/0x320 [ 62.254353][ T21] ? afs_purge_servers+0x16d/0x300 [ 62.260593][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 62.266314][ T21] ? init_wait_var_entry+0x200/0x200 [ 62.271713][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.277427][ T21] ? check_preemption_disabled+0x38/0x220 [ 62.283161][ T21] afs_net_exit+0x1bc/0x310 [ 62.287668][ T21] ? afs_net_init+0xe30/0xe30 [ 62.292341][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.297453][ T21] cleanup_net+0x511/0xa50 [ 62.301876][ T21] ? unregister_pernet_device+0x70/0x70 [ 62.307425][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.313515][ T21] process_one_work+0x965/0x1690 [ 62.318461][ T21] ? lock_release+0x800/0x800 [ 62.323143][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.328528][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 62.333490][ T21] worker_thread+0x96/0xe10 [ 62.338008][ T21] ? process_one_work+0x1690/0x1690 [ 62.343644][ T21] kthread+0x3b5/0x4a0 [ 62.347712][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.353473][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.359240][ T21] ret_from_fork+0x1f/0x30 [ 62.363668][ T21] [ 62.365991][ T21] Allocated by task 6815: [ 62.370319][ T21] save_stack+0x1b/0x40 [ 62.374470][ T21] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 62.380097][ T21] kmem_cache_alloc_trace+0x153/0x7d0 [ 62.385462][ T21] afs_alloc_call+0x55/0x630 [ 62.390148][ T21] afs_charge_preallocation+0xe9/0x2d0 [ 62.395617][ T21] afs_open_socket+0x292/0x360 [ 62.400376][ T21] afs_net_init+0xa6c/0xe30 [ 62.405219][ T21] ops_init+0xaf/0x420 [ 62.409281][ T21] setup_net+0x2de/0x860 [ 62.413521][ T21] copy_net_ns+0x293/0x590 [ 62.418023][ T21] create_new_namespaces+0x3fb/0xb30 [ 62.423317][ T21] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 62.428958][ T21] ksys_unshare+0x43d/0x8e0 [ 62.433457][ T21] __x64_sys_unshare+0x2d/0x40 [ 62.438255][ T21] do_syscall_64+0x60/0xe0 [ 62.442686][ T21] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.448587][ T21] [ 62.450906][ T21] Freed by task 21: [ 62.454716][ T21] save_stack+0x1b/0x40 [ 62.458874][ T21] __kasan_slab_free+0xf7/0x140 [ 62.463716][ T21] kfree+0x109/0x2b0 [ 62.467603][ T21] afs_put_call+0x585/0xa40 [ 62.472109][ T21] rxrpc_discard_prealloc+0x764/0xab0 [ 62.477491][ T21] rxrpc_listen+0x147/0x360 [ 62.481988][ T21] afs_close_socket+0x95/0x320 [ 62.486747][ T21] afs_net_exit+0x1bc/0x310 [ 62.491254][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.496374][ T21] cleanup_net+0x511/0xa50 [ 62.500803][ T21] process_one_work+0x965/0x1690 [ 62.505755][ T21] worker_thread+0x96/0xe10 [ 62.510269][ T21] kthread+0x3b5/0x4a0 [ 62.514340][ T21] ret_from_fork+0x1f/0x30 [ 62.518749][ T21] [ 62.521343][ T21] The buggy address belongs to the object at ffff88809f872000 [ 62.521343][ T21] which belongs to the cache kmalloc-1k of size 1024 [ 62.535410][ T21] The buggy address is located 484 bytes inside of [ 62.535410][ T21] 1024-byte region [ffff88809f872000, ffff88809f872400) [ 62.548763][ T21] The buggy address belongs to the page: [ 62.554407][ T21] page:ffffea00027e1c80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 62.563517][ T21] flags: 0xfffe0000000200(slab) [ 62.568399][ T21] raw: 00fffe0000000200 ffffea0002684f48 ffffea000252bb08 ffff8880aa000c40 [ 62.576984][ T21] raw: 0000000000000000 ffff88809f872000 0000000100000002 0000000000000000 [ 62.585633][ T21] page dumped because: kasan: bad access detected [ 62.592046][ T21] [ 62.594366][ T21] Memory state around the buggy address: [ 62.600014][ T21] ffff88809f872080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.608055][ T21] ffff88809f872100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.616196][ T21] >ffff88809f872180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.624235][ T21] ^ [ 62.631558][ T21] ffff88809f872200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.639658][ T21] ffff88809f872280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.648059][ T21] ================================================================== [ 62.656103][ T21] Disabling lock debugging due to kernel taint [ 62.662294][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 62.668967][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Tainted: G B 5.7.0-syzkaller #0 [ 62.678239][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.688995][ T21] Workqueue: netns cleanup_net [ 62.693745][ T21] Call Trace: [ 62.697142][ T21] dump_stack+0x18f/0x20d [ 62.701455][ T21] ? afs_wake_up_async_call+0x5f0/0x770 [ 62.707480][ T21] ? afs_put_call+0xa40/0xa40 [ 62.712178][ T21] panic+0x2e3/0x75c [ 62.716086][ T21] ? __warn_printk+0xf3/0xf3 [ 62.720760][ T21] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 62.726892][ T21] ? trace_hardirqs_on+0x55/0x220 [ 62.731905][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.737453][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.743258][ T21] ? afs_put_call+0xa40/0xa40 [ 62.748103][ T21] end_report+0x4d/0x53 [ 62.752338][ T21] kasan_report.cold+0xd/0x37 [ 62.757167][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 62.762181][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.767700][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 62.773071][ T21] ? afs_close_socket+0x320/0x320 [ 62.778099][ T21] ? afs_put_call+0xa40/0xa40 [ 62.783195][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 62.788491][ T21] ? afs_put_call+0xa40/0xa40 [ 62.793239][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.800113][ T21] rxrpc_call_completed+0xca/0xf0 [ 62.805235][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 62.810601][ T21] ? lock_sock_nested+0x94/0x110 [ 62.815711][ T21] rxrpc_listen+0x147/0x360 [ 62.820987][ T21] afs_close_socket+0x95/0x320 [ 62.826090][ T21] ? afs_purge_servers+0x16d/0x300 [ 62.831193][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 62.836815][ T21] ? init_wait_var_entry+0x200/0x200 [ 62.842109][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.847738][ T21] ? check_preemption_disabled+0x38/0x220 [ 62.853582][ T21] afs_net_exit+0x1bc/0x310 [ 62.858082][ T21] ? afs_net_init+0xe30/0xe30 [ 62.862741][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.867841][ T21] cleanup_net+0x511/0xa50 [ 62.872235][ T21] ? unregister_pernet_device+0x70/0x70 [ 62.877768][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.883728][ T21] process_one_work+0x965/0x1690 [ 62.888656][ T21] ? lock_release+0x800/0x800 [ 62.893322][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.898683][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 62.903606][ T21] worker_thread+0x96/0xe10 [ 62.908105][ T21] ? process_one_work+0x1690/0x1690 [ 62.913296][ T21] kthread+0x3b5/0x4a0 [ 62.917355][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.923065][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.928934][ T21] ret_from_fork+0x1f/0x30 [ 62.935198][ T21] Kernel Offset: disabled [ 62.939526][ T21] Rebooting in 86400 seconds..