[ 52.174222][ T6719] ext4_mb_new_blocks+0xa4d/0x3b70 [ 52.179317][ T6719] ? ext4_ext_search_right+0x2ca/0xb20 [ 52.184775][ T6719] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 52.190494][ T6719] ext4_ext_map_blocks+0x201b/0x33e0 [ 52.195886][ T6719] ? ext4_ext_release+0x10/0x10 [ 52.200733][ T6719] ? down_write_killable+0x170/0x170 [ 52.206000][ T6719] ? ext4_es_lookup_extent+0x41d/0xd10 [ 52.211438][ T6719] ext4_map_blocks+0x4cb/0x1640 [ 52.216283][ T6719] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 52.221456][ T6719] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 52.226991][ T6719] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 52.232944][ T6719] ? prandom_u32_state+0xe/0x170 [ 52.237872][ T6719] ? __brelse+0x84/0xa0 [ 52.242003][ T6719] ? __ext4_new_inode+0x144/0x55e0 [ 52.247102][ T6719] ext4_getblk+0xad/0x520 [ 52.251408][ T6719] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 52.257103][ T6719] ? ext4_free_inode+0x1700/0x1700 [ 52.262192][ T6719] ext4_bread+0x7c/0x380 [ 52.266416][ T6719] ? ext4_getblk+0x520/0x520 [ 52.270982][ T6719] ? dquot_get_next_dqblk+0x180/0x180 [ 52.276347][ T6719] ext4_append+0x153/0x360 [ 52.280740][ T6719] ext4_mkdir+0x5e0/0xdf0 [ 52.285061][ T6719] ? ext4_rmdir+0xde0/0xde0 [ 52.289540][ T6719] ? security_inode_permission+0xc4/0xf0 [ 52.295267][ T6719] vfs_mkdir+0x419/0x690 [ 52.299506][ T6719] do_mkdirat+0x21e/0x280 [ 52.303821][ T6719] ? __ia32_sys_mknod+0xb0/0xb0 [ 52.308654][ T6719] ? do_syscall_64+0x1c/0xe0 [ 52.313225][ T6719] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 52.319180][ T6719] do_syscall_64+0x60/0xe0 [ 52.323574][ T6719] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 52.329440][ T6719] RIP: 0033:0x7f5098a39687 [ 52.333840][ T6719] Code: Bad RIP value. [ 52.337889][ T6719] RSP: 002b:00007ffe6287ef98 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 52.346273][ T6719] RAX: ffffffffffffffda RBX: 000055b670861985 RCX: 00007f5098a39687 [ 52.355694][ T6719] RDX: 00007ffe6287ee60 RSI: 00000000000001ed RDI: 000055b670861985 [ 52.363640][ T6719] RBP: 00007f5098a39680 R08: 0000000000000100 R09: 0000000000000000 [ 52.371598][ T6719] R10: 000055b670861980 R11: 0000000000000246 R12: 00000000000001ed [ 52.379671][ T6719] R13: 00007ffe6287f120 R14: 0000000000000000 R15: 0000000000000000 [ OK ] Started Load/Save RF Kill Switch Status. Debian GNU/Linux 9 syzkaller ttyS0 syzkaller login: [ 56.391534][ T24] BUG: using smp_processor_id() in preemptible [00000000] code: kworker/u4:2/24 [ 56.400684][ T24] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.406861][ T24] CPU: 0 PID: 24 Comm: kworker/u4:2 Not tainted 5.7.0-syzkaller #0 [ 56.414779][ T24] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 56.424843][ T24] Workqueue: writeback wb_workfn (flush-8:0) [ 56.430905][ T24] Call Trace: [ 56.434191][ T24] dump_stack+0x18f/0x20d [ 56.438511][ T24] check_preemption_disabled+0x20d/0x220 [ 56.444131][ T24] ext4_mb_new_blocks+0xa4d/0x3b70 [ 56.449219][ T24] ? ext4_find_extent+0x81a/0xad0 [ 56.454227][ T24] ? ext4_ext_search_right+0x2ca/0xb20 [ 56.459660][ T24] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 56.465361][ T24] ext4_ext_map_blocks+0x201b/0x33e0 [ 56.470635][ T24] ? ext4_ext_release+0x10/0x10 [ 56.475474][ T24] ? down_write_killable+0x170/0x170 [ 56.480734][ T24] ? ext4_es_lookup_extent+0x41d/0xd10 [ 56.486171][ T24] ext4_map_blocks+0x4cb/0x1640 [ 56.491004][ T24] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 56.496280][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.501813][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.507783][ T24] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 56.513220][ T24] ext4_writepages+0x1a7b/0x33c0 [ 56.518231][ T24] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.523837][ T24] ? __lock_acquire+0x2224/0x48b0 [ 56.528845][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.534806][ T24] ? lockdep_hardirqs_on_prepare+0x590/0x590 [ 56.540763][ T24] ? __ext4_mark_inode_dirty+0x940/0x940 [ 56.546388][ T24] ? do_writepages+0xfa/0x2a0 [ 56.551112][ T24] do_writepages+0xfa/0x2a0 [ 56.555617][ T24] ? page_writeback_cpu_online+0x10/0x10 [ 56.561379][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.566956][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.572991][ T24] ? lock_downgrade+0x840/0x840 [ 56.577844][ T24] __writeback_single_inode+0x12a/0x13d0 [ 56.583479][ T24] ? _raw_spin_unlock+0x24/0x40 [ 56.588312][ T24] ? wbc_attach_and_unlock_inode+0x60a/0x9c0 [ 56.594276][ T24] writeback_sb_inodes+0x515/0xdc0 [ 56.599388][ T24] ? __writeback_single_inode+0x13d0/0x13d0 [ 56.605282][ T24] __writeback_inodes_wb+0xc3/0x250 [ 56.610539][ T24] wb_writeback+0x8db/0xd50 [ 56.615093][ T24] ? writeback_inodes_wb.constprop.0+0x1a0/0x1a0 [ 56.621424][ T24] ? _find_next_bit.constprop.0+0x1a3/0x200 [ 56.627307][ T24] ? cpumask_next+0x3c/0x40 [ 56.631810][ T24] ? get_nr_dirty_inodes+0xd6/0x130 [ 56.637090][ T24] wb_workfn+0xab3/0x1090 [ 56.641405][ T24] ? inode_wait_for_writeback+0x30/0x30 [ 56.647112][ T24] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 56.652633][ T24] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 56.658701][ T24] process_one_work+0x965/0x1690 [ 56.664146][ T24] ? lock_release+0x800/0x800 [ 56.668828][ T24] ? pwq_dec_nr_in_flight+0x310/0x310 [ 56.674198][ T24] ? rwlock_bug.part.0+0x90/0x90 [ 56.679115][ T24] worker_thread+0x96/0xe10 [ 56.683603][ T24] ? process_one_work+0x1690/0x1690 [ 56.688777][ T24] kthread+0x3b5/0x4a0 [ 56.692839][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.698547][ T24] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 56.704243][ T24] ret_from_fork+0x1f/0x30 Warning: Permanently added '10.128.0.174' (ECDSA) to the list of known hosts. 2020/06/14 00:39:21 fuzzer started 2020/06/14 00:39:21 connecting to host at 10.128.0.26:37661 2020/06/14 00:39:21 checking machine... 2020/06/14 00:39:21 checking revisions... 2020/06/14 00:39:21 testing simple program... [ 58.033109][ T6780] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6780 [ 58.042220][ T6780] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.048291][ T6780] CPU: 0 PID: 6780 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 58.056178][ T6780] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.066438][ T6780] Call Trace: [ 58.069745][ T6780] dump_stack+0x18f/0x20d [ 58.074080][ T6780] check_preemption_disabled+0x20d/0x220 [ 58.080402][ T6780] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.085923][ T6780] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.091364][ T6780] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.097067][ T6780] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.102374][ T6780] ? ext4_ext_release+0x10/0x10 [ 58.107392][ T6780] ? down_write_killable+0x170/0x170 [ 58.112753][ T6780] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.118212][ T6780] ext4_map_blocks+0x4cb/0x1640 [ 58.123049][ T6780] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.128226][ T6780] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.134362][ T6780] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.140355][ T6780] ? prandom_u32_state+0xe/0x170 [ 58.145296][ T6780] ? __brelse+0x84/0xa0 [ 58.149469][ T6780] ? __ext4_new_inode+0x144/0x55e0 [ 58.154830][ T6780] ext4_getblk+0xad/0x520 [ 58.159230][ T6780] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.164933][ T6780] ? ext4_free_inode+0x1700/0x1700 [ 58.170040][ T6780] ext4_bread+0x7c/0x380 [ 58.174291][ T6780] ? ext4_getblk+0x520/0x520 [ 58.178869][ T6780] ? dquot_get_next_dqblk+0x180/0x180 [ 58.184246][ T6780] ext4_append+0x153/0x360 [ 58.188644][ T6780] ext4_mkdir+0x5e0/0xdf0 [ 58.192975][ T6780] ? ext4_rmdir+0xde0/0xde0 [ 58.197460][ T6780] ? security_inode_permission+0xc4/0xf0 [ 58.203080][ T6780] vfs_mkdir+0x419/0x690 [ 58.207321][ T6780] do_mkdirat+0x21e/0x280 [ 58.211630][ T6780] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.216473][ T6780] ? do_syscall_64+0x1c/0xe0 [ 58.221054][ T6780] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.227011][ T6780] do_syscall_64+0x60/0xe0 [ 58.231423][ T6780] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.237288][ T6780] RIP: 0033:0x4b02a0 [ 58.242369][ T6780] Code: Bad RIP value. [ 58.246409][ T6780] RSP: 002b:000000c0000cd4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 58.254951][ T6780] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 58.262899][ T6780] RDX: 00000000000001c0 RSI: 000000c000026b40 RDI: ffffffffffffff9c [ 58.270877][ T6780] RBP: 000000c0000cd510 R08: 0000000000000000 R09: 0000000000000000 [ 58.278846][ T6780] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 58.287278][ T6780] R13: 000000000000005b R14: 000000000000005a R15: 0000000000000100 [ 58.313774][ T6799] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6799 [ 58.323252][ T6799] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.329138][ T6799] CPU: 0 PID: 6799 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.337359][ T6799] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.347488][ T6799] Call Trace: [ 58.350783][ T6799] dump_stack+0x18f/0x20d [ 58.355108][ T6799] check_preemption_disabled+0x20d/0x220 [ 58.360820][ T6799] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.365935][ T6799] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.371376][ T6799] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.377079][ T6799] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.382349][ T6799] ? ext4_ext_release+0x10/0x10 [ 58.387205][ T6799] ? down_write_killable+0x170/0x170 [ 58.392482][ T6799] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.397920][ T6799] ext4_map_blocks+0x4cb/0x1640 [ 58.402769][ T6799] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.407946][ T6799] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.413526][ T6799] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.419491][ T6799] ? prandom_u32_state+0xe/0x170 [ 58.424410][ T6799] ? __brelse+0x84/0xa0 [ 58.428555][ T6799] ? __ext4_new_inode+0x144/0x55e0 [ 58.433648][ T6799] ext4_getblk+0xad/0x520 [ 58.437958][ T6799] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.443659][ T6799] ? ext4_free_inode+0x1700/0x1700 [ 58.448745][ T6799] ext4_bread+0x7c/0x380 [ 58.452988][ T6799] ? ext4_getblk+0x520/0x520 [ 58.457565][ T6799] ? dquot_get_next_dqblk+0x180/0x180 [ 58.462917][ T6799] ext4_append+0x153/0x360 [ 58.467313][ T6799] ext4_mkdir+0x5e0/0xdf0 [ 58.471627][ T6799] ? ext4_rmdir+0xde0/0xde0 [ 58.476137][ T6799] ? security_inode_permission+0xc4/0xf0 [ 58.481886][ T6799] vfs_mkdir+0x419/0x690 [ 58.486104][ T6799] do_mkdirat+0x21e/0x280 [ 58.490408][ T6799] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.495247][ T6799] ? do_syscall_64+0x1c/0xe0 [ 58.499823][ T6799] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.505778][ T6799] do_syscall_64+0x60/0xe0 [ 58.510168][ T6799] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.516050][ T6799] RIP: 0033:0x45bee7 [ 58.519914][ T6799] Code: Bad RIP value. [ 58.523953][ T6799] RSP: 002b:00007fff9740d998 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 58.532350][ T6799] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bee7 [ 58.540298][ T6799] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007fff9740db70 [ 58.548258][ T6799] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000036c0 [ 58.556207][ T6799] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 58.564164][ T6799] R13: 00007fff9740db70 R14: 8421084210842109 R15: 00007fff9740db7c [ 58.645678][ T6800] IPVS: ftp: loaded support on port[0] = 21 [ 58.680837][ T6800] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6800 [ 58.690238][ T6800] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.696406][ T6800] CPU: 1 PID: 6800 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 58.704792][ T6800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 58.714872][ T6800] Call Trace: [ 58.718151][ T6800] dump_stack+0x18f/0x20d [ 58.722469][ T6800] check_preemption_disabled+0x20d/0x220 [ 58.728084][ T6800] ext4_mb_new_blocks+0xa4d/0x3b70 [ 58.733184][ T6800] ? ext4_ext_search_right+0x2ca/0xb20 [ 58.738619][ T6800] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 58.744753][ T6800] ext4_ext_map_blocks+0x201b/0x33e0 [ 58.750017][ T6800] ? ext4_ext_release+0x10/0x10 [ 58.754855][ T6800] ? down_write_killable+0x170/0x170 [ 58.760114][ T6800] ? ext4_es_lookup_extent+0x41d/0xd10 [ 58.765557][ T6800] ext4_map_blocks+0x4cb/0x1640 [ 58.770974][ T6800] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 58.776153][ T6800] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 58.781688][ T6800] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 58.787665][ T6800] ? prandom_u32_state+0xe/0x170 [ 58.792668][ T6800] ? __brelse+0x84/0xa0 [ 58.796803][ T6800] ? __ext4_new_inode+0x144/0x55e0 [ 58.801895][ T6800] ext4_getblk+0xad/0x520 [ 58.806202][ T6800] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 58.811913][ T6800] ? ext4_free_inode+0x1700/0x1700 [ 58.816999][ T6800] ext4_bread+0x7c/0x380 [ 58.821219][ T6800] ? ext4_getblk+0x520/0x520 [ 58.825797][ T6800] ? dquot_get_next_dqblk+0x180/0x180 [ 58.831159][ T6800] ext4_append+0x153/0x360 [ 58.835553][ T6800] ext4_mkdir+0x5e0/0xdf0 [ 58.839860][ T6800] ? ext4_rmdir+0xde0/0xde0 [ 58.844341][ T6800] ? security_inode_permission+0xc4/0xf0 [ 58.849952][ T6800] vfs_mkdir+0x419/0x690 [ 58.854189][ T6800] do_mkdirat+0x21e/0x280 [ 58.858493][ T6800] ? __ia32_sys_mknod+0xb0/0xb0 [ 58.863318][ T6800] ? do_syscall_64+0x1c/0xe0 [ 58.867883][ T6800] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 58.873838][ T6800] do_syscall_64+0x60/0xe0 [ 58.878242][ T6800] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 58.884106][ T6800] RIP: 0033:0x45bee7 [ 58.887982][ T6800] Code: Bad RIP value. [ 58.892034][ T6800] RSP: 002b:00007fff9740d888 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 58.900426][ T6800] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bee7 [ 58.908375][ T6800] RDX: 00007fff9740d8d3 RSI: 00000000000001ff RDI: 00007fff9740d8d0 [ 58.916429][ T6800] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 58.924396][ T6800] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185d0 [ 58.932436][ T6800] R13: 00007fff9740d8c0 R14: 0000000000000000 R15: 00007fff9740d8d0 [ 58.987885][ T6800] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6800 [ 58.997819][ T6800] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.003813][ T6800] CPU: 1 PID: 6800 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 59.012046][ T6800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.022224][ T6800] Call Trace: [ 59.025520][ T6800] dump_stack+0x18f/0x20d [ 59.029886][ T6800] check_preemption_disabled+0x20d/0x220 [ 59.035522][ T6800] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.040656][ T6800] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.046121][ T6800] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.052048][ T6800] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.057459][ T6800] ? ext4_ext_release+0x10/0x10 [ 59.062319][ T6800] ? down_write_killable+0x170/0x170 [ 59.067596][ T6800] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.073036][ T6800] ext4_map_blocks+0x4cb/0x1640 [ 59.077954][ T6800] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.083138][ T6800] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.088659][ T6800] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.094613][ T6800] ? prandom_u32_state+0xe/0x170 [ 59.099540][ T6800] ? __brelse+0x84/0xa0 [ 59.103673][ T6800] ? __ext4_new_inode+0x144/0x55e0 [ 59.108761][ T6800] ext4_getblk+0xad/0x520 [ 59.113067][ T6800] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 59.118777][ T6800] ? ext4_free_inode+0x1700/0x1700 [ 59.123865][ T6800] ext4_bread+0x7c/0x380 [ 59.128081][ T6800] ? ext4_getblk+0x520/0x520 [ 59.132733][ T6800] ? dquot_get_next_dqblk+0x180/0x180 [ 59.138081][ T6800] ext4_append+0x153/0x360 [ 59.142475][ T6800] ext4_mkdir+0x5e0/0xdf0 [ 59.146813][ T6800] ? ext4_rmdir+0xde0/0xde0 [ 59.151294][ T6800] ? security_inode_permission+0xc4/0xf0 [ 59.156914][ T6800] vfs_mkdir+0x419/0x690 [ 59.161135][ T6800] do_mkdirat+0x21e/0x280 [ 59.165453][ T6800] ? __ia32_sys_mknod+0xb0/0xb0 [ 59.170285][ T6800] ? do_syscall_64+0x1c/0xe0 [ 59.174862][ T6800] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.180848][ T6800] do_syscall_64+0x60/0xe0 [ 59.185246][ T6800] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 59.191214][ T6800] RIP: 0033:0x45bee7 [ 59.195085][ T6800] Code: Bad RIP value. [ 59.199122][ T6800] RSP: 002b:00007fff9740d888 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 59.207516][ T6800] RAX: ffffffffffffffda RBX: 000000000000e65c RCX: 000000000045bee7 [ 59.215463][ T6800] RDX: 00007fff9740d8d3 RSI: 00000000000001ff RDI: 00007fff9740d8d0 [ 59.223420][ T6800] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 [ 59.231465][ T6800] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 59.239419][ T6800] R13: 00007fff9740d8c0 R14: 000000000000e647 R15: 00007fff9740d8d0 2020/06/14 00:39:22 building call list... [ 59.460693][ T21] tipc: TX() has been purged, node left! [ 59.755709][ T1152] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1152 [ 59.765086][ T1152] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.771078][ T1152] CPU: 0 PID: 1152 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 59.778961][ T1152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 59.789009][ T1152] Call Trace: [ 59.792298][ T1152] dump_stack+0x18f/0x20d [ 59.796648][ T1152] check_preemption_disabled+0x20d/0x220 [ 59.802292][ T1152] ext4_mb_new_blocks+0xa4d/0x3b70 [ 59.807524][ T1152] ? ext4_find_extent+0x81a/0xad0 [ 59.812563][ T1152] ? ext4_ext_search_right+0x2ca/0xb20 [ 59.818027][ T1152] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 59.823849][ T1152] ext4_ext_map_blocks+0x201b/0x33e0 [ 59.829194][ T1152] ? ext4_ext_release+0x10/0x10 [ 59.834061][ T1152] ? down_write_killable+0x170/0x170 [ 59.839591][ T1152] ? ext4_es_lookup_extent+0x41d/0xd10 [ 59.845092][ T1152] ext4_map_blocks+0x4cb/0x1640 [ 59.849951][ T1152] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 59.855157][ T1152] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 59.860708][ T1152] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 59.866682][ T1152] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 59.872141][ T1152] ext4_writepages+0x1a7b/0x33c0 [ 59.877084][ T1152] ? lock_release+0x7c0/0x800 [ 59.881774][ T1152] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.887403][ T1152] ? __ext4_mark_inode_dirty+0x940/0x940 [ 59.893163][ T1152] ? do_writepages+0xfa/0x2a0 [ 59.897841][ T1152] do_writepages+0xfa/0x2a0 [ 59.902368][ T1152] ? page_writeback_cpu_online+0x10/0x10 [ 59.907988][ T1152] ? do_raw_spin_lock+0x120/0x2d0 [ 59.913013][ T1152] ? do_raw_spin_unlock+0x171/0x260 [ 59.918205][ T1152] ? _raw_spin_unlock+0x24/0x40 [ 59.923074][ T1152] __filemap_fdatawrite_range+0x2aa/0x390 [ 59.928795][ T1152] ? collapse_file+0x35a2/0x4330 [ 59.933893][ T1152] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 59.939959][ T1152] ? _raw_spin_unlock_irq+0x1f/0x80 [ 59.945150][ T1152] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 59.951164][ T1152] collapse_file+0x35ac/0x4330 [ 59.955927][ T1152] ? collapse_huge_page+0x4350/0x4350 [ 59.961292][ T1152] ? khugepaged+0x2506/0x3fc0 [ 59.966112][ T1152] ? xas_find+0x31a/0x880 [ 59.970538][ T1152] ? check_preemption_disabled+0x38/0x220 [ 59.976260][ T1152] khugepaged+0x3041/0x3fc0 [ 59.980783][ T1152] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 59.986456][ T1152] ? lock_downgrade+0x840/0x840 [ 59.991313][ T1152] ? finish_wait+0x260/0x260 [ 59.995919][ T1152] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.001726][ T1152] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.007706][ T1152] ? __kthread_parkme+0x13f/0x1e0 [ 60.012727][ T1152] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.018372][ T1152] kthread+0x3b5/0x4a0 [ 60.022514][ T1152] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.028441][ T1152] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.034181][ T1152] ret_from_fork+0x1f/0x30 [ 60.125995][ T1152] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1152 [ 60.135140][ T1152] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.141257][ T1152] CPU: 1 PID: 1152 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.149142][ T1152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.159186][ T1152] Call Trace: [ 60.162475][ T1152] dump_stack+0x18f/0x20d [ 60.166806][ T1152] check_preemption_disabled+0x20d/0x220 [ 60.172435][ T1152] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.177558][ T1152] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.183049][ T1152] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.189202][ T1152] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.194512][ T1152] ? ext4_ext_release+0x10/0x10 [ 60.199376][ T1152] ? down_write_killable+0x170/0x170 [ 60.204654][ T1152] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.210139][ T1152] ext4_map_blocks+0x4cb/0x1640 [ 60.215042][ T1152] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.220249][ T1152] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.226226][ T1152] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.232227][ T1152] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.237686][ T1152] ext4_writepages+0x1a7b/0x33c0 [ 60.242630][ T1152] ? lock_release+0x7c0/0x800 [ 60.247319][ T1152] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.252984][ T1152] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.258609][ T1152] ? do_writepages+0xfa/0x2a0 [ 60.263299][ T1152] do_writepages+0xfa/0x2a0 [ 60.267807][ T1152] ? page_writeback_cpu_online+0x10/0x10 [ 60.273781][ T1152] ? do_raw_spin_lock+0x120/0x2d0 [ 60.278821][ T1152] ? do_raw_spin_unlock+0x171/0x260 [ 60.284019][ T1152] ? _raw_spin_unlock+0x24/0x40 [ 60.288870][ T1152] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.294584][ T1152] ? collapse_file+0x35a2/0x4330 [ 60.299517][ T1152] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.305591][ T1152] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.310786][ T1152] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.316767][ T1152] collapse_file+0x35ac/0x4330 [ 60.321546][ T1152] ? collapse_huge_page+0x4350/0x4350 [ 60.326999][ T1152] ? khugepaged+0x2506/0x3fc0 [ 60.331683][ T1152] ? xas_find+0x31a/0x880 [ 60.336036][ T1152] ? check_preemption_disabled+0x38/0x220 [ 60.341754][ T1152] khugepaged+0x3041/0x3fc0 [ 60.346300][ T1152] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.351930][ T1152] ? lock_downgrade+0x840/0x840 [ 60.356868][ T1152] ? finish_wait+0x260/0x260 [ 60.361454][ T1152] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.367258][ T1152] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.373241][ T1152] ? __kthread_parkme+0x13f/0x1e0 [ 60.378350][ T1152] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.383979][ T1152] kthread+0x3b5/0x4a0 [ 60.388042][ T1152] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.393752][ T1152] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.399469][ T1152] ret_from_fork+0x1f/0x30 [ 60.536606][ T1152] BUG: using smp_processor_id() in preemptible [00000000] code: khugepaged/1152 [ 60.545879][ T1152] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.551901][ T1152] CPU: 0 PID: 1152 Comm: khugepaged Not tainted 5.7.0-syzkaller #0 [ 60.559876][ T1152] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.569926][ T1152] Call Trace: [ 60.573219][ T1152] dump_stack+0x18f/0x20d [ 60.577554][ T1152] check_preemption_disabled+0x20d/0x220 [ 60.583185][ T1152] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.588312][ T1152] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.594294][ T1152] ? ext4_ext_next_allocated_block+0x221/0x2d0 [ 60.600448][ T1152] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.605737][ T1152] ? ext4_ext_release+0x10/0x10 [ 60.610601][ T1152] ? down_write_killable+0x170/0x170 [ 60.616313][ T1152] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.621775][ T1152] ext4_map_blocks+0x4cb/0x1640 [ 60.626629][ T1152] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.631830][ T1152] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.637369][ T1152] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.643434][ T1152] ? ext4_alloc_io_end_vec+0x145/0x1c0 [ 60.648892][ T1152] ext4_writepages+0x1a7b/0x33c0 [ 60.653830][ T1152] ? lock_release+0x7c0/0x800 [ 60.658525][ T1152] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.664188][ T1152] ? __ext4_mark_inode_dirty+0x940/0x940 [ 60.669839][ T1152] ? do_writepages+0xfa/0x2a0 [ 60.674511][ T1152] do_writepages+0xfa/0x2a0 [ 60.679016][ T1152] ? page_writeback_cpu_online+0x10/0x10 [ 60.684661][ T1152] ? do_raw_spin_lock+0x120/0x2d0 [ 60.689679][ T1152] ? do_raw_spin_unlock+0x171/0x260 [ 60.695048][ T1152] ? _raw_spin_unlock+0x24/0x40 [ 60.699906][ T1152] __filemap_fdatawrite_range+0x2aa/0x390 [ 60.705621][ T1152] ? collapse_file+0x35a2/0x4330 [ 60.710552][ T1152] ? delete_from_page_cache_batch+0xeb0/0xeb0 [ 60.716623][ T1152] ? _raw_spin_unlock_irq+0x1f/0x80 [ 60.721819][ T1152] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.727799][ T1152] collapse_file+0x35ac/0x4330 [ 60.732575][ T1152] ? collapse_huge_page+0x4350/0x4350 [ 60.737938][ T1152] ? khugepaged+0x2506/0x3fc0 [ 60.742623][ T1152] ? xas_find+0x31a/0x880 [ 60.746945][ T1152] ? check_preemption_disabled+0x38/0x220 [ 60.752675][ T1152] khugepaged+0x3041/0x3fc0 [ 60.757199][ T1152] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.762835][ T1152] ? lock_downgrade+0x840/0x840 [ 60.767678][ T1152] ? finish_wait+0x260/0x260 [ 60.772299][ T1152] ? _raw_spin_unlock_irqrestore+0x62/0xe0 [ 60.778100][ T1152] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 executing program [ 60.784080][ T1152] ? __kthread_parkme+0x13f/0x1e0 [ 60.791448][ T1152] ? collapse_pte_mapped_thp+0xbf0/0xbf0 [ 60.797080][ T1152] kthread+0x3b5/0x4a0 [ 60.801165][ T1152] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.806876][ T1152] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 60.812595][ T1152] ret_from_fork+0x1f/0x30 [ 60.932512][ T21] ================================================================== [ 60.940758][ T21] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 60.948830][ T21] Write of size 1 at addr ffff888081c7e1e4 by task kworker/u4:1/21 [ 60.957342][ T21] [ 60.959654][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 60.967514][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.977567][ T21] Workqueue: netns cleanup_net [ 60.982317][ T21] Call Trace: [ 60.985716][ T21] dump_stack+0x18f/0x20d [ 60.990027][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 60.995552][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.001076][ T21] ? afs_put_call+0xa40/0xa40 [ 61.005751][ T21] print_address_description.constprop.0.cold+0xd3/0x413 [ 61.012855][ T21] ? vprintk_func+0x97/0x1a6 [ 61.017440][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.022964][ T21] kasan_report.cold+0x1f/0x37 [ 61.027707][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 61.032722][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.038263][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 61.043743][ T21] ? afs_close_socket+0x320/0x320 [ 61.048854][ T21] ? afs_put_call+0xa40/0xa40 [ 61.053521][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 61.058632][ T21] ? afs_put_call+0xa40/0xa40 [ 61.063635][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 61.070099][ T21] rxrpc_call_completed+0xca/0xf0 [ 61.075161][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 61.080517][ T21] ? lock_sock_nested+0x94/0x110 [ 61.085450][ T21] rxrpc_listen+0x147/0x360 [ 61.089938][ T21] afs_close_socket+0x95/0x320 [ 61.095214][ T21] ? afs_purge_servers+0x16d/0x300 [ 61.100326][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 61.105795][ T21] ? init_wait_var_entry+0x200/0x200 [ 61.111081][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 61.116710][ T21] ? check_preemption_disabled+0x38/0x220 [ 61.122414][ T21] afs_net_exit+0x1bc/0x310 [ 61.126920][ T21] ? afs_net_init+0xe30/0xe30 [ 61.131617][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 61.136846][ T21] cleanup_net+0x511/0xa50 [ 61.141265][ T21] ? unregister_pernet_device+0x70/0x70 [ 61.146803][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.152800][ T21] process_one_work+0x965/0x1690 [ 61.157728][ T21] ? lock_release+0x800/0x800 [ 61.162402][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.167769][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 61.172691][ T21] worker_thread+0x96/0xe10 [ 61.177179][ T21] ? process_one_work+0x1690/0x1690 [ 61.186123][ T21] kthread+0x3b5/0x4a0 [ 61.190199][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.195905][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.201711][ T21] ret_from_fork+0x1f/0x30 [ 61.206669][ T21] [ 61.208985][ T21] Allocated by task 6800: [ 61.213301][ T21] save_stack+0x1b/0x40 [ 61.217442][ T21] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 61.223242][ T21] kmem_cache_alloc_trace+0x153/0x7d0 [ 61.228609][ T21] afs_alloc_call+0x55/0x630 [ 61.233183][ T21] afs_charge_preallocation+0xe9/0x2d0 [ 61.238639][ T21] afs_open_socket+0x292/0x360 [ 61.243406][ T21] afs_net_init+0xa6c/0xe30 [ 61.247889][ T21] ops_init+0xaf/0x420 [ 61.251934][ T21] setup_net+0x2de/0x860 [ 61.256158][ T21] copy_net_ns+0x293/0x590 [ 61.260560][ T21] create_new_namespaces+0x3fb/0xb30 [ 61.266018][ T21] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 61.271642][ T21] ksys_unshare+0x43d/0x8e0 [ 61.276134][ T21] __x64_sys_unshare+0x2d/0x40 [ 61.280874][ T21] do_syscall_64+0x60/0xe0 [ 61.285296][ T21] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.291284][ T21] [ 61.293598][ T21] Freed by task 21: [ 61.297401][ T21] save_stack+0x1b/0x40 [ 61.301560][ T21] __kasan_slab_free+0xf7/0x140 [ 61.306391][ T21] kfree+0x109/0x2b0 [ 61.310358][ T21] afs_put_call+0x585/0xa40 [ 61.314858][ T21] rxrpc_discard_prealloc+0x764/0xab0 [ 61.320346][ T21] rxrpc_listen+0x147/0x360 [ 61.324856][ T21] afs_close_socket+0x95/0x320 [ 61.329597][ T21] afs_net_exit+0x1bc/0x310 [ 61.334103][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 61.339191][ T21] cleanup_net+0x511/0xa50 [ 61.343586][ T21] process_one_work+0x965/0x1690 [ 61.348543][ T21] worker_thread+0x96/0xe10 [ 61.353044][ T21] kthread+0x3b5/0x4a0 [ 61.357249][ T21] ret_from_fork+0x1f/0x30 [ 61.361830][ T21] [ 61.364326][ T21] The buggy address belongs to the object at ffff888081c7e000 [ 61.364326][ T21] which belongs to the cache kmalloc-1k of size 1024 [ 61.378660][ T21] The buggy address is located 484 bytes inside of [ 61.378660][ T21] 1024-byte region [ffff888081c7e000, ffff888081c7e400) [ 61.392001][ T21] The buggy address belongs to the page: [ 61.397621][ T21] page:ffffea0002071f80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 61.407518][ T21] flags: 0xfffe0000000200(slab) [ 61.412353][ T21] raw: 00fffe0000000200 ffffea0002071f08 ffffea0002071fc8 ffff8880aa000c40 [ 61.420915][ T21] raw: 0000000000000000 ffff888081c7e000 0000000100000002 0000000000000000 [ 61.429512][ T21] page dumped because: kasan: bad access detected [ 61.435895][ T21] [ 61.438205][ T21] Memory state around the buggy address: [ 61.443809][ T21] ffff888081c7e080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.451863][ T21] ffff888081c7e100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.459901][ T21] >ffff888081c7e180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.468042][ T21] ^ [ 61.475213][ T21] ffff888081c7e200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.483263][ T21] ffff888081c7e280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 61.491295][ T21] ================================================================== [ 61.499432][ T21] Disabling lock debugging due to kernel taint [ 61.505633][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 61.512217][ T21] CPU: 1 PID: 21 Comm: kworker/u4:1 Tainted: G B 5.7.0-syzkaller #0 [ 61.521486][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.531552][ T21] Workqueue: netns cleanup_net [ 61.536297][ T21] Call Trace: [ 61.539562][ T21] dump_stack+0x18f/0x20d [ 61.543880][ T21] ? afs_wake_up_async_call+0x5f0/0x770 [ 61.549398][ T21] ? afs_put_call+0xa40/0xa40 [ 61.554059][ T21] panic+0x2e3/0x75c [ 61.557950][ T21] ? __warn_printk+0xf3/0xf3 [ 61.562654][ T21] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 61.568804][ T21] ? trace_hardirqs_on+0x55/0x220 [ 61.573821][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.579474][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.584998][ T21] ? afs_put_call+0xa40/0xa40 [ 61.589650][ T21] end_report+0x4d/0x53 [ 61.593884][ T21] kasan_report.cold+0xd/0x37 [ 61.598690][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 61.603711][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 61.609332][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 61.614691][ T21] ? afs_close_socket+0x320/0x320 [ 61.619699][ T21] ? afs_put_call+0xa40/0xa40 [ 61.624349][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 61.629432][ T21] ? afs_put_call+0xa40/0xa40 [ 61.634090][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 61.640480][ T21] rxrpc_call_completed+0xca/0xf0 [ 61.645477][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 61.650822][ T21] ? lock_sock_nested+0x94/0x110 [ 61.655738][ T21] rxrpc_listen+0x147/0x360 [ 61.660225][ T21] afs_close_socket+0x95/0x320 [ 61.664972][ T21] ? afs_purge_servers+0x16d/0x300 [ 61.670069][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 61.675498][ T21] ? init_wait_var_entry+0x200/0x200 [ 61.680779][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 61.686383][ T21] ? check_preemption_disabled+0x38/0x220 [ 61.692086][ T21] afs_net_exit+0x1bc/0x310 [ 61.696572][ T21] ? afs_net_init+0xe30/0xe30 [ 61.701221][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 61.706314][ T21] cleanup_net+0x511/0xa50 [ 61.710714][ T21] ? unregister_pernet_device+0x70/0x70 [ 61.716319][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.722273][ T21] process_one_work+0x965/0x1690 [ 61.727194][ T21] ? lock_release+0x800/0x800 [ 61.731855][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 61.737209][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 61.742130][ T21] worker_thread+0x96/0xe10 [ 61.746617][ T21] ? process_one_work+0x1690/0x1690 [ 61.751787][ T21] kthread+0x3b5/0x4a0 [ 61.755831][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.761541][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 61.767236][ T21] ret_from_fork+0x1f/0x30 [ 61.773215][ T21] Kernel Offset: disabled [ 61.777530][ T21] Rebooting in 86400 seconds..