Warning: Permanently added '10.128.10.42' (ECDSA) to the list of known hosts. 2020/06/15 22:30:17 fuzzer started 2020/06/15 22:30:17 connecting to host at 10.128.0.26:34887 2020/06/15 22:30:17 checking machine... 2020/06/15 22:30:17 checking revisions... 2020/06/15 22:30:17 testing simple program... [ 66.955136][ T6789] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6789 [ 66.964437][ T6789] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 66.970339][ T6789] CPU: 1 PID: 6789 Comm: syz-fuzzer Not tainted 5.8.0-rc1-syzkaller #0 [ 66.978692][ T6789] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 66.988743][ T6789] Call Trace: [ 66.992033][ T6789] dump_stack+0x18f/0x20d [ 66.996355][ T6789] check_preemption_disabled+0x20d/0x220 [ 67.001967][ T6789] ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.007079][ T6789] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.012515][ T6789] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.018224][ T6789] ext4_ext_map_blocks+0x201b/0x33e0 [ 67.023496][ T6789] ? ext4_ext_release+0x10/0x10 [ 67.028332][ T6789] ? down_write_killable+0x170/0x170 [ 67.033606][ T6789] ? ext4_es_lookup_extent+0x41d/0xd10 [ 67.039048][ T6789] ext4_map_blocks+0x4cb/0x1640 [ 67.043912][ T6789] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.049105][ T6789] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.054627][ T6789] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.060674][ T6789] ? prandom_u32_state+0xe/0x170 [ 67.065593][ T6789] ? __brelse+0x84/0xa0 [ 67.069737][ T6789] ? __ext4_new_inode+0x144/0x55e0 [ 67.074829][ T6789] ext4_getblk+0xad/0x520 [ 67.079135][ T6789] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 67.084853][ T6789] ? ext4_free_inode+0x1700/0x1700 [ 67.090074][ T6789] ext4_bread+0x7c/0x380 [ 67.094309][ T6789] ? ext4_getblk+0x520/0x520 [ 67.098899][ T6789] ? dquot_get_next_dqblk+0x180/0x180 [ 67.104260][ T6789] ext4_append+0x153/0x360 [ 67.108762][ T6789] ext4_mkdir+0x5e0/0xdf0 [ 67.113094][ T6789] ? ext4_rmdir+0xde0/0xde0 [ 67.117595][ T6789] ? security_inode_permission+0xc4/0xf0 [ 67.123228][ T6789] vfs_mkdir+0x419/0x690 [ 67.127471][ T6789] do_mkdirat+0x21e/0x280 [ 67.132717][ T6789] ? __ia32_sys_mknod+0xb0/0xb0 [ 67.137548][ T6789] ? do_syscall_64+0x1c/0xe0 [ 67.142117][ T6789] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.149034][ T6789] do_syscall_64+0x60/0xe0 [ 67.153518][ T6789] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.159391][ T6789] RIP: 0033:0x4b02a0 [ 67.163267][ T6789] Code: Bad RIP value. [ 67.167407][ T6789] RSP: 002b:000000c0000c74b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 67.175831][ T6789] RAX: ffffffffffffffda RBX: 000000c00002e500 RCX: 00000000004b02a0 [ 67.183782][ T6789] RDX: 00000000000001c0 RSI: 000000c0000d4b20 RDI: ffffffffffffff9c [ 67.191747][ T6789] RBP: 000000c0000c7510 R08: 0000000000000000 R09: 0000000000000000 [ 67.199737][ T6789] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 67.207703][ T6789] R13: 000000000000005a R14: 0000000000000059 R15: 0000000000000100 [ 67.234216][ T6806] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6806 [ 67.243889][ T6806] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.249792][ T6806] CPU: 0 PID: 6806 Comm: syz-executor.0 Not tainted 5.8.0-rc1-syzkaller #0 [ 67.258366][ T6806] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.268402][ T6806] Call Trace: [ 67.271710][ T6806] dump_stack+0x18f/0x20d [ 67.276046][ T6806] check_preemption_disabled+0x20d/0x220 [ 67.281819][ T6806] ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.286938][ T6806] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.292498][ T6806] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.298221][ T6806] ext4_ext_map_blocks+0x201b/0x33e0 [ 67.303648][ T6806] ? ext4_ext_release+0x10/0x10 [ 67.308515][ T6806] ? down_write_killable+0x170/0x170 [ 67.313811][ T6806] ? ext4_es_lookup_extent+0x41d/0xd10 [ 67.319276][ T6806] ext4_map_blocks+0x4cb/0x1640 [ 67.324115][ T6806] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.329297][ T6806] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.334854][ T6806] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.340830][ T6806] ? prandom_u32_state+0xe/0x170 [ 67.345756][ T6806] ? __brelse+0x84/0xa0 [ 67.349895][ T6806] ? __ext4_new_inode+0x144/0x55e0 [ 67.354992][ T6806] ext4_getblk+0xad/0x520 [ 67.359307][ T6806] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 67.365024][ T6806] ? ext4_free_inode+0x1700/0x1700 [ 67.370195][ T6806] ext4_bread+0x7c/0x380 [ 67.374514][ T6806] ? ext4_getblk+0x520/0x520 [ 67.379085][ T6806] ? dquot_get_next_dqblk+0x180/0x180 [ 67.384442][ T6806] ext4_append+0x153/0x360 [ 67.388840][ T6806] ext4_mkdir+0x5e0/0xdf0 [ 67.393176][ T6806] ? ext4_rmdir+0xde0/0xde0 [ 67.397699][ T6806] ? security_inode_permission+0xc4/0xf0 [ 67.403316][ T6806] vfs_mkdir+0x419/0x690 [ 67.407545][ T6806] do_mkdirat+0x21e/0x280 [ 67.411855][ T6806] ? __ia32_sys_mknod+0xb0/0xb0 [ 67.416688][ T6806] ? do_syscall_64+0x1c/0xe0 [ 67.421280][ T6806] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.427242][ T6806] do_syscall_64+0x60/0xe0 [ 67.431650][ T6806] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.437522][ T6806] RIP: 0033:0x45bed7 [ 67.441508][ T6806] Code: Bad RIP value. [ 67.445563][ T6806] RSP: 002b:00007ffeedb08088 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 67.453974][ T6806] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 67.461927][ T6806] RDX: 0000000000000002 RSI: 00000000000001c0 RDI: 00007ffeedb08260 [ 67.469882][ T6806] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 0000000000002c80 [ 67.477849][ T6806] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 67.485808][ T6806] R13: 00007ffeedb08260 R14: 8421084210842109 R15: 00007ffeedb0826c [ 67.594922][ T6807] IPVS: ftp: loaded support on port[0] = 21 [ 67.632629][ T6807] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6807 [ 67.642474][ T6807] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.648488][ T6807] CPU: 1 PID: 6807 Comm: syz-executor.0 Not tainted 5.8.0-rc1-syzkaller #0 [ 67.657072][ T6807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.667124][ T6807] Call Trace: [ 67.672050][ T6807] dump_stack+0x18f/0x20d [ 67.676391][ T6807] check_preemption_disabled+0x20d/0x220 [ 67.682004][ T6807] ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.687121][ T6807] ? ext4_ext_search_right+0x2ca/0xb20 [ 67.692559][ T6807] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 67.698398][ T6807] ext4_ext_map_blocks+0x201b/0x33e0 [ 67.703811][ T6807] ? ext4_ext_release+0x10/0x10 [ 67.708739][ T6807] ? down_write_killable+0x170/0x170 [ 67.714279][ T6807] ? ext4_es_lookup_extent+0x41d/0xd10 [ 67.720451][ T6807] ext4_map_blocks+0x4cb/0x1640 [ 67.725308][ T6807] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 67.730508][ T6807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 67.736053][ T6807] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 67.742012][ T6807] ? prandom_u32_state+0xe/0x170 [ 67.746933][ T6807] ? __brelse+0x84/0xa0 [ 67.751069][ T6807] ? __ext4_new_inode+0x144/0x55e0 [ 67.756165][ T6807] ext4_getblk+0xad/0x520 [ 67.760504][ T6807] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 67.766224][ T6807] ? ext4_free_inode+0x1700/0x1700 [ 67.771318][ T6807] ext4_bread+0x7c/0x380 [ 67.775541][ T6807] ? ext4_getblk+0x520/0x520 [ 67.780110][ T6807] ? dquot_get_next_dqblk+0x180/0x180 [ 67.785476][ T6807] ext4_append+0x153/0x360 [ 67.789877][ T6807] ext4_mkdir+0x5e0/0xdf0 [ 67.794190][ T6807] ? ext4_rmdir+0xde0/0xde0 [ 67.798676][ T6807] ? security_inode_permission+0xc4/0xf0 [ 67.804317][ T6807] vfs_mkdir+0x419/0x690 [ 67.808570][ T6807] do_mkdirat+0x21e/0x280 [ 67.812897][ T6807] ? __ia32_sys_mknod+0xb0/0xb0 [ 67.817730][ T6807] ? do_syscall_64+0x1c/0xe0 [ 67.822301][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 67.828262][ T6807] do_syscall_64+0x60/0xe0 [ 67.832681][ T6807] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 67.838604][ T6807] RIP: 0033:0x45bed7 [ 67.842490][ T6807] Code: Bad RIP value. [ 67.846548][ T6807] RSP: 002b:00007ffeedb07f78 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 67.854964][ T6807] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 67.862931][ T6807] RDX: 00007ffeedb07fc3 RSI: 00000000000001ff RDI: 00007ffeedb07fc0 [ 67.870903][ T6807] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 67.878984][ T6807] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185c0 [ 67.886941][ T6807] R13: 00007ffeedb07fb0 R14: 0000000000000000 R15: 00007ffeedb07fc0 [ 67.944531][ T6807] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6807 [ 67.954150][ T6807] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.960064][ T6807] CPU: 0 PID: 6807 Comm: syz-executor.0 Not tainted 5.8.0-rc1-syzkaller #0 [ 67.968683][ T6807] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 67.978744][ T6807] Call Trace: [ 67.982054][ T6807] dump_stack+0x18f/0x20d [ 67.986403][ T6807] check_preemption_disabled+0x20d/0x220 [ 67.992100][ T6807] ext4_mb_new_blocks+0xa4d/0x3b70 [ 67.997245][ T6807] ? ext4_ext_search_right+0x2ca/0xb20 [ 68.002715][ T6807] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 68.008460][ T6807] ext4_ext_map_blocks+0x201b/0x33e0 [ 68.013769][ T6807] ? ext4_ext_release+0x10/0x10 [ 68.018772][ T6807] ? down_write_killable+0x170/0x170 [ 68.024061][ T6807] ? ext4_es_lookup_extent+0x41d/0xd10 [ 68.029543][ T6807] ext4_map_blocks+0x4cb/0x1640 [ 68.034399][ T6807] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 68.039602][ T6807] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 68.045177][ T6807] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 68.051165][ T6807] ? prandom_u32_state+0xe/0x170 [ 68.056117][ T6807] ? __brelse+0x84/0xa0 [ 68.060283][ T6807] ? __ext4_new_inode+0x144/0x55e0 [ 68.065518][ T6807] ext4_getblk+0xad/0x520 [ 68.069832][ T6807] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 68.075556][ T6807] ? ext4_free_inode+0x1700/0x1700 [ 68.080649][ T6807] ext4_bread+0x7c/0x380 [ 68.084901][ T6807] ? ext4_getblk+0x520/0x520 [ 68.089492][ T6807] ? dquot_get_next_dqblk+0x180/0x180 [ 68.094851][ T6807] ext4_append+0x153/0x360 [ 68.099252][ T6807] ext4_mkdir+0x5e0/0xdf0 [ 68.103585][ T6807] ? ext4_rmdir+0xde0/0xde0 [ 68.108097][ T6807] ? security_inode_permission+0xc4/0xf0 [ 68.113734][ T6807] vfs_mkdir+0x419/0x690 [ 68.117968][ T6807] do_mkdirat+0x21e/0x280 [ 68.122364][ T6807] ? __ia32_sys_mknod+0xb0/0xb0 [ 68.127466][ T6807] ? do_syscall_64+0x1c/0xe0 [ 68.132045][ T6807] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 68.138017][ T6807] do_syscall_64+0x60/0xe0 [ 68.142419][ T6807] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 68.148381][ T6807] RIP: 0033:0x45bed7 [ 68.152248][ T6807] Code: Bad RIP value. [ 68.156382][ T6807] RSP: 002b:00007ffeedb07f78 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 68.164773][ T6807] RAX: ffffffffffffffda RBX: 000000000001095a RCX: 000000000045bed7 [ 68.172745][ T6807] RDX: 00007ffeedb07fc3 RSI: 00000000000001ff RDI: 00007ffeedb07fc0 [ 68.180697][ T6807] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/15 22:30:18 building call list... [ 68.188664][ T6807] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 68.196624][ T6807] R13: 00007ffeedb07fb0 R14: 0000000000010944 R15: 00007ffeedb07fc0 [ 68.483374][ T121] tipc: TX() has been purged, node left! [ 68.985438][ T121] ================================================================== [ 68.993689][ T121] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 69.001577][ T121] Write of size 1 at addr ffff88809ed3e9e4 by task kworker/u4:4/121 [ 69.009543][ T121] [ 69.011874][ T121] CPU: 0 PID: 121 Comm: kworker/u4:4 Not tainted 5.8.0-rc1-syzkaller #0 [ 69.020189][ T121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.030252][ T121] Workqueue: netns cleanup_net [ 69.035009][ T121] Call Trace: [ 69.038309][ T121] dump_stack+0x18f/0x20d [ 69.042645][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.048189][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.053731][ T121] ? afs_put_call+0xa40/0xa40 [ 69.058407][ T121] print_address_description.constprop.0.cold+0xd3/0x413 [ 69.065438][ T121] ? vprintk_func+0x97/0x1a6 [ 69.070031][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.075574][ T121] kasan_report.cold+0x1f/0x37 [ 69.080340][ T121] ? rcu_read_lock_held_common+0x51/0xa0 [ 69.085977][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.091530][ T121] afs_wake_up_async_call+0x6aa/0x770 [ 69.096917][ T121] ? afs_close_socket+0x320/0x320 [ 69.101939][ T121] ? afs_put_call+0xa40/0xa40 [ 69.106616][ T121] rxrpc_notify_socket+0x1db/0x5d0 [ 69.111731][ T121] ? afs_put_call+0xa40/0xa40 [ 69.116414][ T121] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 69.122829][ T121] rxrpc_call_completed+0xca/0xf0 [ 69.127868][ T121] rxrpc_discard_prealloc+0x781/0xab0 [ 69.133243][ T121] ? lock_sock_nested+0x94/0x110 [ 69.138184][ T121] rxrpc_listen+0x147/0x360 [ 69.142952][ T121] afs_close_socket+0x95/0x320 [ 69.147723][ T121] ? afs_purge_servers+0x16d/0x300 [ 69.152834][ T121] ? afs_rx_discard_new_call+0x50/0x50 [ 69.158296][ T121] ? init_wait_var_entry+0x200/0x200 [ 69.163582][ T121] ? rcu_read_lock_held_common+0xa0/0xa0 [ 69.169217][ T121] ? check_preemption_disabled+0x38/0x220 [ 69.174958][ T121] afs_net_exit+0x1bc/0x310 [ 69.179493][ T121] ? afs_net_init+0xe30/0xe30 [ 69.184172][ T121] ops_exit_list.isra.0+0xa8/0x150 [ 69.189307][ T121] cleanup_net+0x511/0xa50 [ 69.193726][ T121] ? unregister_pernet_device+0x70/0x70 [ 69.199274][ T121] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 69.205262][ T121] process_one_work+0x965/0x1690 [ 69.210209][ T121] ? lock_release+0x800/0x800 [ 69.214909][ T121] ? pwq_dec_nr_in_flight+0x310/0x310 [ 69.220284][ T121] ? rwlock_bug.part.0+0x90/0x90 [ 69.225237][ T121] worker_thread+0x96/0xe10 [ 69.229753][ T121] ? process_one_work+0x1690/0x1690 [ 69.234954][ T121] kthread+0x3b5/0x4a0 [ 69.239040][ T121] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.244755][ T121] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.250477][ T121] ret_from_fork+0x1f/0x30 [ 69.254904][ T121] [ 69.257228][ T121] Allocated by task 6807: [ 69.261557][ T121] save_stack+0x1b/0x40 [ 69.265711][ T121] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 69.271340][ T121] kmem_cache_alloc_trace+0x153/0x7d0 [ 69.276707][ T121] afs_alloc_call+0x55/0x630 [ 69.281300][ T121] afs_charge_preallocation+0xe9/0x2d0 [ 69.286839][ T121] afs_open_socket+0x292/0x360 [ 69.291605][ T121] afs_net_init+0xa6c/0xe30 [ 69.296108][ T121] ops_init+0xaf/0x420 [ 69.300177][ T121] setup_net+0x2de/0x860 [ 69.304428][ T121] copy_net_ns+0x293/0x590 [ 69.309119][ T121] create_new_namespaces+0x3fb/0xb30 [ 69.314445][ T121] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 69.320089][ T121] ksys_unshare+0x43d/0x8e0 [ 69.324606][ T121] __x64_sys_unshare+0x2d/0x40 [ 69.329437][ T121] do_syscall_64+0x60/0xe0 [ 69.333871][ T121] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 69.339753][ T121] [ 69.342076][ T121] Freed by task 121: [ 69.345978][ T121] save_stack+0x1b/0x40 [ 69.350132][ T121] __kasan_slab_free+0xf7/0x140 [ 69.354989][ T121] kfree+0x109/0x2b0 [ 69.358931][ T121] afs_put_call+0x585/0xa40 [ 69.363440][ T121] rxrpc_discard_prealloc+0x764/0xab0 [ 69.368846][ T121] rxrpc_listen+0x147/0x360 [ 69.373368][ T121] afs_close_socket+0x95/0x320 [ 69.378128][ T121] afs_net_exit+0x1bc/0x310 [ 69.382713][ T121] ops_exit_list.isra.0+0xa8/0x150 [ 69.388511][ T121] cleanup_net+0x511/0xa50 [ 69.392927][ T121] process_one_work+0x965/0x1690 [ 69.397861][ T121] worker_thread+0x96/0xe10 [ 69.402379][ T121] kthread+0x3b5/0x4a0 [ 69.407402][ T121] ret_from_fork+0x1f/0x30 [ 69.411830][ T121] [ 69.414159][ T121] The buggy address belongs to the object at ffff88809ed3e800 [ 69.414159][ T121] which belongs to the cache kmalloc-1k of size 1024 [ 69.428209][ T121] The buggy address is located 484 bytes inside of [ 69.428209][ T121] 1024-byte region [ffff88809ed3e800, ffff88809ed3ec00) [ 69.441556][ T121] The buggy address belongs to the page: [ 69.447275][ T121] page:ffffea00027b4f80 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 69.456374][ T121] flags: 0xfffe0000000200(slab) [ 69.461851][ T121] raw: 00fffe0000000200 ffffea00027b57c8 ffffea00027b3c48 ffff8880aa000c40 [ 69.470557][ T121] raw: 0000000000000000 ffff88809ed3e000 0000000100000002 0000000000000000 [ 69.479162][ T121] page dumped because: kasan: bad access detected [ 69.485587][ T121] [ 69.487931][ T121] Memory state around the buggy address: [ 69.493559][ T121] ffff88809ed3e880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.501714][ T121] ffff88809ed3e900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.509780][ T121] >ffff88809ed3e980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.517839][ T121] ^ [ 69.525029][ T121] ffff88809ed3ea00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.533110][ T121] ffff88809ed3ea80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 69.541167][ T121] ================================================================== [ 69.549241][ T121] Disabling lock debugging due to kernel taint [ 69.555454][ T121] Kernel panic - not syncing: panic_on_warn set ... [ 69.562062][ T121] CPU: 0 PID: 121 Comm: kworker/u4:4 Tainted: G B 5.8.0-rc1-syzkaller #0 [ 69.571774][ T121] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 69.581843][ T121] Workqueue: netns cleanup_net [ 69.586606][ T121] Call Trace: [ 69.589903][ T121] dump_stack+0x18f/0x20d [ 69.594243][ T121] ? afs_wake_up_async_call+0x670/0x770 [ 69.599792][ T121] ? afs_put_call+0xa40/0xa40 [ 69.604472][ T121] panic+0x2e3/0x75c [ 69.608371][ T121] ? __warn_printk+0xf3/0xf3 [ 69.612986][ T121] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 69.619143][ T121] ? trace_hardirqs_on+0x55/0x220 [ 69.624206][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.629796][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.635335][ T121] ? afs_put_call+0xa40/0xa40 [ 69.639996][ T121] end_report+0x4d/0x53 [ 69.644143][ T121] kasan_report.cold+0xd/0x37 [ 69.648810][ T121] ? rcu_read_lock_held_common+0x51/0xa0 [ 69.654473][ T121] ? afs_wake_up_async_call+0x6aa/0x770 [ 69.660011][ T121] afs_wake_up_async_call+0x6aa/0x770 [ 69.665367][ T121] ? afs_close_socket+0x320/0x320 [ 69.670373][ T121] ? afs_put_call+0xa40/0xa40 [ 69.675055][ T121] rxrpc_notify_socket+0x1db/0x5d0 [ 69.680217][ T121] ? afs_put_call+0xa40/0xa40 [ 69.684950][ T121] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 69.691350][ T121] rxrpc_call_completed+0xca/0xf0 [ 69.696460][ T121] rxrpc_discard_prealloc+0x781/0xab0 [ 69.701820][ T121] ? lock_sock_nested+0x94/0x110 [ 69.706831][ T121] rxrpc_listen+0x147/0x360 [ 69.711319][ T121] afs_close_socket+0x95/0x320 [ 69.716068][ T121] ? afs_purge_servers+0x16d/0x300 [ 69.721164][ T121] ? afs_rx_discard_new_call+0x50/0x50 [ 69.726611][ T121] ? init_wait_var_entry+0x200/0x200 [ 69.731887][ T121] ? rcu_read_lock_held_common+0xa0/0xa0 [ 69.737507][ T121] ? check_preemption_disabled+0x38/0x220 [ 69.743210][ T121] afs_net_exit+0x1bc/0x310 [ 69.747700][ T121] ? afs_net_init+0xe30/0xe30 [ 69.752444][ T121] ops_exit_list.isra.0+0xa8/0x150 [ 69.757534][ T121] cleanup_net+0x511/0xa50 [ 69.761971][ T121] ? unregister_pernet_device+0x70/0x70 [ 69.767505][ T121] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 69.773466][ T121] process_one_work+0x965/0x1690 [ 69.778450][ T121] ? lock_release+0x800/0x800 [ 69.783116][ T121] ? pwq_dec_nr_in_flight+0x310/0x310 [ 69.788492][ T121] ? rwlock_bug.part.0+0x90/0x90 [ 69.793425][ T121] worker_thread+0x96/0xe10 [ 69.797927][ T121] ? process_one_work+0x1690/0x1690 [ 69.803133][ T121] kthread+0x3b5/0x4a0 [ 69.807203][ T121] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.812907][ T121] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 69.818708][ T121] ret_from_fork+0x1f/0x30 [ 69.824511][ T121] Kernel Offset: disabled [ 69.828839][ T121] Rebooting in 86400 seconds..