Warning: Permanently added '10.128.15.197' (ECDSA) to the list of known hosts. 2020/06/15 19:50:01 fuzzer started 2020/06/15 19:50:02 connecting to host at 10.128.0.26:39449 2020/06/15 19:50:02 checking machine... 2020/06/15 19:50:02 checking revisions... 2020/06/15 19:50:02 testing simple program... [ 60.247416][ T6800] BUG: using smp_processor_id() in preemptible [00000000] code: syz-fuzzer/6800 [ 60.256537][ T6800] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.262742][ T6800] CPU: 0 PID: 6800 Comm: syz-fuzzer Not tainted 5.7.0-syzkaller #0 [ 60.270628][ T6800] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.280755][ T6800] Call Trace: [ 60.284031][ T6800] dump_stack+0x18f/0x20d [ 60.288361][ T6800] check_preemption_disabled+0x20d/0x220 [ 60.294041][ T6800] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.299144][ T6800] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.304583][ T6800] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.310286][ T6800] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.315562][ T6800] ? ext4_ext_release+0x10/0x10 [ 60.320399][ T6800] ? down_write_killable+0x170/0x170 [ 60.325728][ T6800] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.331181][ T6800] ext4_map_blocks+0x4cb/0x1640 [ 60.336021][ T6800] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.341199][ T6800] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.346720][ T6800] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.352678][ T6800] ? prandom_u32_state+0xe/0x170 [ 60.357594][ T6800] ? __brelse+0x84/0xa0 [ 60.361724][ T6800] ? __ext4_new_inode+0x144/0x55e0 [ 60.366811][ T6800] ext4_getblk+0xad/0x520 [ 60.371120][ T6800] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.376827][ T6800] ? ext4_free_inode+0x1700/0x1700 [ 60.381923][ T6800] ext4_bread+0x7c/0x380 [ 60.386138][ T6800] ? ext4_getblk+0x520/0x520 [ 60.390707][ T6800] ? dquot_get_next_dqblk+0x180/0x180 [ 60.396058][ T6800] ext4_append+0x153/0x360 [ 60.400450][ T6800] ext4_mkdir+0x5e0/0xdf0 [ 60.404758][ T6800] ? ext4_rmdir+0xde0/0xde0 [ 60.409252][ T6800] ? security_inode_permission+0xc4/0xf0 [ 60.414881][ T6800] vfs_mkdir+0x419/0x690 [ 60.419101][ T6800] do_mkdirat+0x21e/0x280 [ 60.423407][ T6800] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.428237][ T6800] ? do_syscall_64+0x1c/0xe0 [ 60.432803][ T6800] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.438758][ T6800] do_syscall_64+0x60/0xe0 [ 60.443166][ T6800] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.449036][ T6800] RIP: 0033:0x4b02a0 [ 60.452899][ T6800] Code: Bad RIP value. [ 60.456949][ T6800] RSP: 002b:000000c00004f4b8 EFLAGS: 00000212 ORIG_RAX: 0000000000000102 [ 60.465344][ T6800] RAX: ffffffffffffffda RBX: 000000c00002c000 RCX: 00000000004b02a0 [ 60.473288][ T6800] RDX: 00000000000001c0 RSI: 000000c00031c3c0 RDI: ffffffffffffff9c [ 60.481232][ T6800] RBP: 000000c00004f510 R08: 0000000000000000 R09: 0000000000000000 [ 60.489191][ T6800] R10: 0000000000000000 R11: 0000000000000212 R12: ffffffffffffffff [ 60.497160][ T6800] R13: 000000000000001f R14: 000000000000001e R15: 0000000000000100 [ 60.512268][ T6817] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6817 [ 60.521748][ T6817] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.527732][ T6817] CPU: 0 PID: 6817 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.535966][ T6817] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.546012][ T6817] Call Trace: [ 60.549285][ T6817] dump_stack+0x18f/0x20d [ 60.553605][ T6817] check_preemption_disabled+0x20d/0x220 [ 60.559214][ T6817] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.564315][ T6817] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.569758][ T6817] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.575519][ T6817] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.580821][ T6817] ? ext4_ext_release+0x10/0x10 [ 60.585666][ T6817] ? down_write_killable+0x170/0x170 [ 60.590942][ T6817] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.596394][ T6817] ext4_map_blocks+0x4cb/0x1640 [ 60.601240][ T6817] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.606412][ T6817] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.611952][ T6817] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.618014][ T6817] ? prandom_u32_state+0xe/0x170 [ 60.622951][ T6817] ? __brelse+0x84/0xa0 [ 60.627082][ T6817] ? __ext4_new_inode+0x144/0x55e0 [ 60.632187][ T6817] ext4_getblk+0xad/0x520 [ 60.636495][ T6817] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 60.642194][ T6817] ? ext4_free_inode+0x1700/0x1700 [ 60.647295][ T6817] ext4_bread+0x7c/0x380 [ 60.651524][ T6817] ? ext4_getblk+0x520/0x520 [ 60.656087][ T6817] ? dquot_get_next_dqblk+0x180/0x180 [ 60.661437][ T6817] ext4_append+0x153/0x360 [ 60.665834][ T6817] ext4_mkdir+0x5e0/0xdf0 [ 60.670145][ T6817] ? ext4_rmdir+0xde0/0xde0 [ 60.674637][ T6817] ? security_inode_permission+0xc4/0xf0 [ 60.680259][ T6817] vfs_mkdir+0x419/0x690 [ 60.684478][ T6817] do_mkdirat+0x21e/0x280 [ 60.688786][ T6817] ? __ia32_sys_mknod+0xb0/0xb0 [ 60.693629][ T6817] ? do_syscall_64+0x1c/0xe0 [ 60.698200][ T6817] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 60.704157][ T6817] do_syscall_64+0x60/0xe0 [ 60.708567][ T6817] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 60.714441][ T6817] RIP: 0033:0x45bed7 [ 60.718305][ T6817] Code: Bad RIP value. [ 60.722345][ T6817] RSP: 002b:00007ffc12e57188 EFLAGS: 00000246 ORIG_RAX: 0000000000000053 [ 60.730740][ T6817] RAX: ffffffffffffffda RBX: 000000000003a2f8 RCX: 000000000045bed7 [ 60.738697][ T6817] RDX: 0000000000000003 RSI: 00000000000001c0 RDI: 00007ffc12e57360 [ 60.746643][ T6817] RBP: 0000000000000001 R08: 000000000000f8c0 R09: 00000000000032c0 [ 60.754590][ T6817] R10: 0000000000000011 R11: 0000000000000246 R12: 00000000000000c2 [ 60.762538][ T6817] R13: 00007ffc12e57360 R14: 8421084210842109 R15: 00007ffc12e5736c [ 60.846370][ T6818] IPVS: ftp: loaded support on port[0] = 21 [ 60.882739][ T6818] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6818 [ 60.892667][ T6818] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.898746][ T6818] CPU: 1 PID: 6818 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 60.906972][ T6818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 60.917013][ T6818] Call Trace: [ 60.920288][ T6818] dump_stack+0x18f/0x20d [ 60.924600][ T6818] check_preemption_disabled+0x20d/0x220 [ 60.930228][ T6818] ext4_mb_new_blocks+0xa4d/0x3b70 [ 60.935335][ T6818] ? ext4_ext_search_right+0x2ca/0xb20 [ 60.940770][ T6818] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 60.946468][ T6818] ext4_ext_map_blocks+0x201b/0x33e0 [ 60.951749][ T6818] ? ext4_ext_release+0x10/0x10 [ 60.956584][ T6818] ? down_write_killable+0x170/0x170 [ 60.961852][ T6818] ? ext4_es_lookup_extent+0x41d/0xd10 [ 60.967299][ T6818] ext4_map_blocks+0x4cb/0x1640 [ 60.972130][ T6818] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 60.977315][ T6818] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 60.982838][ T6818] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 60.988792][ T6818] ? prandom_u32_state+0xe/0x170 [ 60.993715][ T6818] ? __brelse+0x84/0xa0 [ 60.997845][ T6818] ? __ext4_new_inode+0x144/0x55e0 [ 61.002949][ T6818] ext4_getblk+0xad/0x520 [ 61.007264][ T6818] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.012963][ T6818] ? ext4_free_inode+0x1700/0x1700 [ 61.018053][ T6818] ext4_bread+0x7c/0x380 [ 61.022271][ T6818] ? ext4_getblk+0x520/0x520 [ 61.026834][ T6818] ? dquot_get_next_dqblk+0x180/0x180 [ 61.032196][ T6818] ext4_append+0x153/0x360 [ 61.036593][ T6818] ext4_mkdir+0x5e0/0xdf0 [ 61.040915][ T6818] ? ext4_rmdir+0xde0/0xde0 [ 61.045405][ T6818] ? security_inode_permission+0xc4/0xf0 [ 61.051022][ T6818] vfs_mkdir+0x419/0x690 [ 61.055241][ T6818] do_mkdirat+0x21e/0x280 [ 61.059546][ T6818] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.064371][ T6818] ? do_syscall_64+0x1c/0xe0 [ 61.068936][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.074889][ T6818] do_syscall_64+0x60/0xe0 [ 61.079284][ T6818] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.085149][ T6818] RIP: 0033:0x45bed7 [ 61.089013][ T6818] Code: Bad RIP value. [ 61.093049][ T6818] RSP: 002b:00007ffc12e57078 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.101445][ T6818] RAX: ffffffffffffffda RBX: 000000000078c988 RCX: 000000000045bed7 [ 61.109391][ T6818] RDX: 00007ffc12e570c3 RSI: 00000000000001ff RDI: 00007ffc12e570c0 [ 61.117337][ T6818] RBP: 00000000000000f8 R08: 0000000000000000 R09: 0000000000000003 [ 61.125304][ T6818] R10: 0000000000000064 R11: 0000000000000206 R12: 00000000004185c0 [ 61.133259][ T6818] R13: 00007ffc12e570b0 R14: 0000000000000000 R15: 00007ffc12e570c0 [ 61.183138][ T6818] BUG: using smp_processor_id() in preemptible [00000000] code: syz-executor.0/6818 [ 61.192787][ T6818] caller is ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.198780][ T6818] CPU: 0 PID: 6818 Comm: syz-executor.0 Not tainted 5.7.0-syzkaller #0 [ 61.207013][ T6818] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 61.217068][ T6818] Call Trace: [ 61.220364][ T6818] dump_stack+0x18f/0x20d [ 61.224708][ T6818] check_preemption_disabled+0x20d/0x220 [ 61.230345][ T6818] ext4_mb_new_blocks+0xa4d/0x3b70 [ 61.235473][ T6818] ? ext4_ext_search_right+0x2ca/0xb20 [ 61.240942][ T6818] ? ext4_inode_to_goal_block+0x2df/0x3f0 [ 61.246680][ T6818] ext4_ext_map_blocks+0x201b/0x33e0 [ 61.251983][ T6818] ? ext4_ext_release+0x10/0x10 [ 61.256866][ T6818] ? down_write_killable+0x170/0x170 [ 61.262138][ T6818] ? ext4_es_lookup_extent+0x41d/0xd10 [ 61.267577][ T6818] ext4_map_blocks+0x4cb/0x1640 [ 61.272422][ T6818] ? ext4_issue_zeroout+0x1e0/0x1e0 [ 61.277611][ T6818] ? rcu_read_lock_sched_held+0x9c/0xd0 [ 61.283149][ T6818] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 61.289118][ T6818] ? prandom_u32_state+0xe/0x170 [ 61.294044][ T6818] ? __brelse+0x84/0xa0 [ 61.298182][ T6818] ? __ext4_new_inode+0x144/0x55e0 [ 61.303293][ T6818] ext4_getblk+0xad/0x520 [ 61.307620][ T6818] ? ext4_iomap_overwrite_begin+0xa0/0xa0 [ 61.313340][ T6818] ? ext4_free_inode+0x1700/0x1700 [ 61.318444][ T6818] ext4_bread+0x7c/0x380 [ 61.322677][ T6818] ? ext4_getblk+0x520/0x520 [ 61.327259][ T6818] ? dquot_get_next_dqblk+0x180/0x180 [ 61.332626][ T6818] ext4_append+0x153/0x360 [ 61.337034][ T6818] ext4_mkdir+0x5e0/0xdf0 [ 61.341427][ T6818] ? ext4_rmdir+0xde0/0xde0 [ 61.345934][ T6818] ? security_inode_permission+0xc4/0xf0 [ 61.351566][ T6818] vfs_mkdir+0x419/0x690 [ 61.355807][ T6818] do_mkdirat+0x21e/0x280 [ 61.360137][ T6818] ? __ia32_sys_mknod+0xb0/0xb0 [ 61.365497][ T6818] ? do_syscall_64+0x1c/0xe0 [ 61.370080][ T6818] ? lockdep_hardirqs_on_prepare+0x3a2/0x590 [ 61.376065][ T6818] do_syscall_64+0x60/0xe0 [ 61.380470][ T6818] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 61.386346][ T6818] RIP: 0033:0x45bed7 [ 61.390223][ T6818] Code: Bad RIP value. [ 61.394330][ T6818] RSP: 002b:00007ffc12e57078 EFLAGS: 00000206 ORIG_RAX: 0000000000000053 [ 61.402822][ T6818] RAX: ffffffffffffffda RBX: 000000000000eeef RCX: 000000000045bed7 [ 61.410791][ T6818] RDX: 00007ffc12e570c3 RSI: 00000000000001ff RDI: 00007ffc12e570c0 [ 61.418747][ T6818] RBP: 0000000000000002 R08: 0000000000000000 R09: 0000000000000003 2020/06/15 19:50:03 building call list... [ 61.426695][ T6818] R10: 0000000000000064 R11: 0000000000000206 R12: 0000000000000003 [ 61.434652][ T6818] R13: 00007ffc12e570b0 R14: 000000000000eeeb R15: 00007ffc12e570c0 [ 61.687918][ T21] tipc: TX() has been purged, node left! [ 62.209550][ T21] ================================================================== [ 62.217768][ T21] BUG: KASAN: use-after-free in afs_wake_up_async_call+0x6aa/0x770 [ 62.225651][ T21] Write of size 1 at addr ffff8880821771e4 by task kworker/u4:1/21 [ 62.233536][ T21] [ 62.235865][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Not tainted 5.7.0-syzkaller #0 [ 62.243746][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.253796][ T21] Workqueue: netns cleanup_net [ 62.258634][ T21] Call Trace: [ 62.261922][ T21] dump_stack+0x18f/0x20d [ 62.266249][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.271787][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.277323][ T21] ? afs_put_call+0xa40/0xa40 [ 62.281994][ T21] print_address_description.constprop.0.cold+0xd3/0x413 [ 62.289015][ T21] ? vprintk_func+0x97/0x1a6 [ 62.293602][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.299140][ T21] kasan_report.cold+0x1f/0x37 [ 62.303920][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 62.308942][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.314583][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 62.319950][ T21] ? afs_close_socket+0x320/0x320 [ 62.324973][ T21] ? afs_put_call+0xa40/0xa40 [ 62.329645][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 62.334761][ T21] ? afs_put_call+0xa40/0xa40 [ 62.339433][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.345844][ T21] rxrpc_call_completed+0xca/0xf0 [ 62.350867][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 62.356241][ T21] ? lock_sock_nested+0x94/0x110 [ 62.361180][ T21] rxrpc_listen+0x147/0x360 [ 62.365680][ T21] afs_close_socket+0x95/0x320 [ 62.370523][ T21] ? afs_purge_servers+0x16d/0x300 [ 62.375628][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 62.381085][ T21] ? init_wait_var_entry+0x200/0x200 [ 62.386369][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.391998][ T21] ? check_preemption_disabled+0x38/0x220 [ 62.397718][ T21] afs_net_exit+0x1bc/0x310 [ 62.402215][ T21] ? afs_net_init+0xe30/0xe30 [ 62.406892][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.412002][ T21] cleanup_net+0x511/0xa50 [ 62.416415][ T21] ? unregister_pernet_device+0x70/0x70 [ 62.421962][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.427951][ T21] process_one_work+0x965/0x1690 [ 62.432910][ T21] ? lock_release+0x800/0x800 [ 62.437601][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 62.442976][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 62.447919][ T21] worker_thread+0x96/0xe10 [ 62.452428][ T21] ? process_one_work+0x1690/0x1690 [ 62.457638][ T21] kthread+0x3b5/0x4a0 [ 62.461700][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.467409][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 62.473126][ T21] ret_from_fork+0x1f/0x30 [ 62.477549][ T21] [ 62.479879][ T21] Allocated by task 6818: [ 62.484217][ T21] save_stack+0x1b/0x40 [ 62.488375][ T21] __kasan_kmalloc.constprop.0+0xbf/0xd0 [ 62.494002][ T21] kmem_cache_alloc_trace+0x153/0x7d0 [ 62.499361][ T21] afs_alloc_call+0x55/0x630 [ 62.503982][ T21] afs_charge_preallocation+0xe9/0x2d0 [ 62.509435][ T21] afs_open_socket+0x292/0x360 [ 62.514185][ T21] afs_net_init+0xa6c/0xe30 [ 62.518665][ T21] ops_init+0xaf/0x420 [ 62.522710][ T21] setup_net+0x2de/0x860 [ 62.526933][ T21] copy_net_ns+0x293/0x590 [ 62.531334][ T21] create_new_namespaces+0x3fb/0xb30 [ 62.536606][ T21] unshare_nsproxy_namespaces+0xbd/0x1f0 [ 62.542232][ T21] ksys_unshare+0x43d/0x8e0 [ 62.546727][ T21] __x64_sys_unshare+0x2d/0x40 [ 62.551484][ T21] do_syscall_64+0x60/0xe0 [ 62.555887][ T21] entry_SYSCALL_64_after_hwframe+0x44/0xa9 [ 62.561759][ T21] [ 62.564075][ T21] Freed by task 21: [ 62.567882][ T21] save_stack+0x1b/0x40 [ 62.572032][ T21] __kasan_slab_free+0xf7/0x140 [ 62.576875][ T21] kfree+0x109/0x2b0 [ 62.580763][ T21] afs_put_call+0x585/0xa40 [ 62.585275][ T21] rxrpc_discard_prealloc+0x764/0xab0 [ 62.590640][ T21] rxrpc_listen+0x147/0x360 [ 62.595133][ T21] afs_close_socket+0x95/0x320 [ 62.599896][ T21] afs_net_exit+0x1bc/0x310 [ 62.604391][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.609493][ T21] cleanup_net+0x511/0xa50 [ 62.613909][ T21] process_one_work+0x965/0x1690 [ 62.618841][ T21] worker_thread+0x96/0xe10 [ 62.623346][ T21] kthread+0x3b5/0x4a0 [ 62.627408][ T21] ret_from_fork+0x1f/0x30 [ 62.631806][ T21] [ 62.634192][ T21] The buggy address belongs to the object at ffff888082177000 [ 62.634192][ T21] which belongs to the cache kmalloc-1k of size 1024 [ 62.648238][ T21] The buggy address is located 484 bytes inside of [ 62.648238][ T21] 1024-byte region [ffff888082177000, ffff888082177400) [ 62.661579][ T21] The buggy address belongs to the page: [ 62.667203][ T21] page:ffffea0002085dc0 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 [ 62.676299][ T21] flags: 0xfffe0000000200(slab) [ 62.681144][ T21] raw: 00fffe0000000200 ffffea0002085cc8 ffffea0002085e08 ffff8880aa000c40 [ 62.689724][ T21] raw: 0000000000000000 ffff888082177000 0000000100000002 0000000000000000 [ 62.698294][ T21] page dumped because: kasan: bad access detected [ 62.704689][ T21] [ 62.707004][ T21] Memory state around the buggy address: [ 62.712628][ T21] ffff888082177080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.720679][ T21] ffff888082177100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.728732][ T21] >ffff888082177180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.736779][ T21] ^ [ 62.743963][ T21] ffff888082177200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.752016][ T21] ffff888082177280: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb [ 62.760063][ T21] ================================================================== [ 62.768110][ T21] Disabling lock debugging due to kernel taint [ 62.774297][ T21] Kernel panic - not syncing: panic_on_warn set ... [ 62.780877][ T21] CPU: 0 PID: 21 Comm: kworker/u4:1 Tainted: G B 5.7.0-syzkaller #0 [ 62.790142][ T21] Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 [ 62.800204][ T21] Workqueue: netns cleanup_net [ 62.804955][ T21] Call Trace: [ 62.808236][ T21] dump_stack+0x18f/0x20d [ 62.812558][ T21] ? afs_wake_up_async_call+0x5f0/0x770 [ 62.818094][ T21] ? afs_put_call+0xa40/0xa40 [ 62.822772][ T21] panic+0x2e3/0x75c [ 62.826656][ T21] ? __warn_printk+0xf3/0xf3 [ 62.831233][ T21] ? asm_sysvec_apic_timer_interrupt+0x12/0x20 [ 62.837377][ T21] ? trace_hardirqs_on+0x55/0x220 [ 62.842393][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.847928][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.853460][ T21] ? afs_put_call+0xa40/0xa40 [ 62.858124][ T21] end_report+0x4d/0x53 [ 62.862268][ T21] kasan_report.cold+0xd/0x37 [ 62.866931][ T21] ? rcu_read_lock_held+0x81/0xb0 [ 62.871942][ T21] ? afs_wake_up_async_call+0x6aa/0x770 [ 62.877472][ T21] afs_wake_up_async_call+0x6aa/0x770 [ 62.882831][ T21] ? afs_close_socket+0x320/0x320 [ 62.887863][ T21] ? afs_put_call+0xa40/0xa40 [ 62.892529][ T21] rxrpc_notify_socket+0x1db/0x5d0 [ 62.897629][ T21] ? afs_put_call+0xa40/0xa40 [ 62.902296][ T21] __rxrpc_set_call_completion.part.0+0x172/0x410 [ 62.908701][ T21] rxrpc_call_completed+0xca/0xf0 [ 62.913718][ T21] rxrpc_discard_prealloc+0x781/0xab0 [ 62.919078][ T21] ? lock_sock_nested+0x94/0x110 [ 62.924439][ T21] rxrpc_listen+0x147/0x360 [ 62.928930][ T21] afs_close_socket+0x95/0x320 [ 62.933681][ T21] ? afs_purge_servers+0x16d/0x300 [ 62.938779][ T21] ? afs_rx_discard_new_call+0x50/0x50 [ 62.944228][ T21] ? init_wait_var_entry+0x200/0x200 [ 62.949508][ T21] ? rcu_read_lock_held_common+0xa0/0xa0 [ 62.955128][ T21] ? check_preemption_disabled+0x38/0x220 [ 62.960841][ T21] afs_net_exit+0x1bc/0x310 [ 62.965334][ T21] ? afs_net_init+0xe30/0xe30 [ 62.969997][ T21] ops_exit_list.isra.0+0xa8/0x150 [ 62.975109][ T21] cleanup_net+0x511/0xa50 [ 62.979513][ T21] ? unregister_pernet_device+0x70/0x70 [ 62.985049][ T21] ? rcu_read_lock_any_held.part.0+0x50/0x50 [ 62.991022][ T21] process_one_work+0x965/0x1690 [ 62.995977][ T21] ? lock_release+0x800/0x800 [ 63.000644][ T21] ? pwq_dec_nr_in_flight+0x310/0x310 [ 63.006004][ T21] ? rwlock_bug.part.0+0x90/0x90 [ 63.010933][ T21] worker_thread+0x96/0xe10 [ 63.015428][ T21] ? process_one_work+0x1690/0x1690 [ 63.020612][ T21] kthread+0x3b5/0x4a0 [ 63.024665][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.030370][ T21] ? kthread_mod_delayed_work+0x1a0/0x1a0 [ 63.036075][ T21] ret_from_fork+0x1f/0x30 [ 63.041658][ T21] Kernel Offset: disabled [ 63.046000][ T21] Rebooting in 86400 seconds..