UDF-fs: warning (device loop3): udf_load_vrs: No anchor found INFO: task kworker/u4:4:1521 blocked for more than 140 seconds. Not tainted 4.19.211-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. UDF-fs: Scanning with blocksize 1024 failed kworker/u4:4 D25712 1521 2 0x80000000 netlink: 'syz-executor.4': attribute type 5 has an invalid length. Workqueue: netns cleanup_net UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed schedule+0x8d/0x1b0 kernel/sched/core.c:3561 netlink: 'syz-executor.0': attribute type 5 has an invalid length. UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed schedule_timeout+0x92d/0xfe0 kernel/time/timer.c:1794 do_wait_for_common kernel/sched/completion.c:83 [inline] __wait_for_common kernel/sched/completion.c:104 [inline] wait_for_common+0x29c/0x470 kernel/sched/completion.c:115 UDF-fs: error (device loop3): udf_process_sequence: Primary Volume Descriptor not found! UDF-fs: error (device loop3): udf_read_inode: (ino 1312) failed !bh UDF-fs: Scanning with blocksize 512 failed flush_workqueue+0x40b/0x13e0 kernel/workqueue.c:2713 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed flush_scheduled_work include/linux/workqueue.h:599 [inline] tipc_exit_net+0x38/0x60 net/tipc/core.c:100 UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 ops_exit_list+0xa5/0x150 net/core/net_namespace.c:153 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 2048 failed cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554 UDF-fs: warning (device loop3): udf_load_vrs: No VRS found UDF-fs: Scanning with blocksize 4096 failed process_one_work+0x864/0x1570 kernel/workqueue.c:2153 worker_thread+0x64c/0x1130 kernel/workqueue.c:2296 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: 3 locks held by kworker/0:1/14: #0: 0000000095044ca5 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000005eb45d6c ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 #2: 000000001dad4a83 (&smc->clcsock_release_lock){+.+.}, at: smc_clcsock_accept net/smc/af_smc.c:843 [inline] #2: 000000001dad4a83 (&smc->clcsock_release_lock){+.+.}, at: smc_tcp_listen_work+0x191/0xce0 net/smc/af_smc.c:1314 UDF-fs: error (device loop3): udf_process_sequence: Primary Volume Descriptor not found! 3 locks held by kworker/u4:4/1521: #0: 00000000b60f6927 ((wq_completion)"%s""netns"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 UDF-fs: error (device loop3): udf_read_inode: (ino 1312) failed !bh #1: 00000000f3be665c (net_cleanup_work){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 UDF-fs: Scanning with blocksize 512 failed #2: 000000008123403d (pernet_ops_rwsem){++++}, at: cleanup_net+0xa8/0x8b0 net/core/net_namespace.c:521 1 lock held by khungtaskd/1535: #0: 00000000dd6d0fcc (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 1 lock held by in:imklog/7825: #0: 000000003c8046af (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found UDF-fs: Scanning with blocksize 1024 failed UDF-fs: error (device loop3): udf_read_tagged: read failed, block=512, location=512 UDF-fs: warning (device loop3): udf_load_vrs: No anchor found 1 lock held by syz-executor.4/8189: #0: 000000000ea028fd (rcu_preempt_state.exp_mutex){+.+.}, at: exp_funnel_lock kernel/rcu/tree_exp.h:297 [inline] #0: 000000000ea028fd (rcu_preempt_state.exp_mutex){+.+.}, at: _synchronize_rcu_expedited+0x4dc/0x6f0 kernel/rcu/tree_exp.h:667 UDF-fs: Scanning with blocksize 2048 failed UDF-fs: warning (device loop3): udf_load_vrs: No VRS found EXT4-fs error (device sda1): mb_free_blocks:1452: group 14, inode 13955: block 460800:freeing already freed block (bit 2048); block bitmap corrupt. UDF-fs: Scanning with blocksize 4096 failed 3 locks held by kworker/0:3/8360: EXT4-fs error (device sda1): ext4_mb_generate_buddy:744: group 14, block bitmap and bg descriptor inconsistent: 32736 vs 32737 free clusters #0: 0000000095044ca5 ((wq_completion)"events"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 EXT4-fs (sda1): pa 000000001b6dad14: logic 0, phys. 460800, len 32 #1: 000000002581ab9a ((work_completion)(&smc->tcp_listen_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 EXT4-fs error (device sda1): ext4_mb_release_inode_pa:3864: group 14, free 16, pa_free 15 #2: 00000000ff6c3cdf (&smc->clcsock_release_lock){+.+.}, at: smc_clcsock_accept net/smc/af_smc.c:843 [inline] #2: 00000000ff6c3cdf (&smc->clcsock_release_lock){+.+.}, at: smc_tcp_listen_work+0x191/0xce0 net/smc/af_smc.c:1314 2 locks held by kworker/1:31/12541: #0: 0000000046990787 ((wq_completion)"rcu_gp"){+.+.}, at: process_one_work+0x767/0x1570 kernel/workqueue.c:2124 #1: 000000008cf892d2 ((work_completion)(&rew.rew_work)){+.+.}, at: process_one_work+0x79c/0x1570 kernel/workqueue.c:2128 1 lock held by systemd-udevd/30811: #0: 00000000ae421351 (kernfs_mutex){+.+.}, at: kernfs_iop_permission+0x5f/0xb0 fs/kernfs/inode.c:301 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 1535 Comm: khungtaskd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x1fc/0x2ef lib/dump_stack.c:118 nmi_cpu_backtrace.cold+0x63/0xa2 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x1a6/0x1f0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:203 [inline] watchdog+0x991/0xe60 kernel/hung_task.c:287 kthread+0x33f/0x460 kernel/kthread.c:259 ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8113 Comm: sshd Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__sanitizer_cov_trace_cmp8+0x4/0x20 kernel/kcov.c:167 Code: 00 00 00 00 00 90 48 8b 0c 24 89 f2 89 fe bf 04 00 00 00 e9 4e ff ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 00 48 8b 0c 24 <48> 89 f2 48 89 fe bf 06 00 00 00 e9 2c ff ff ff 66 66 2e 0f 1f 84 RSP: 0018:ffff8880a2ff78f0 EFLAGS: 00000282 RAX: ffff888097a78240 RBX: ffff8880a9034880 RCX: ffffffff812b5e56 RDX: 0000000000000000 RSI: ffff888129034880 RDI: ffff8880a9034880 RBP: ffff888129034880 R08: 00000000006102c0 R09: 0000000000000002 R10: 000000004b22c87b R11: 00000000e2754ee8 R12: 0000000000000000 R13: 00000000ffffffff R14: 0000000000000000 R15: ffff8880a96de280 FS: 00007fda156858c0(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000555555e24708 CR3: 00000000aadfa000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __phys_addr+0x26/0x110 arch/x86/mm/physaddr.c:19 virt_to_head_page include/linux/mm.h:665 [inline] virt_to_cache mm/slab.c:399 [inline] ksize+0x16/0x60 mm/slab.c:4483 __alloc_skb+0xc7/0x560 net/core/skbuff.c:212 alloc_skb_fclone include/linux/skbuff.h:1037 [inline] sk_stream_alloc_skb+0xba/0x850 net/ipv4/tcp.c:884 tcp_sendmsg_locked+0xc0b/0x2f60 net/ipv4/tcp.c:1312 tcp_sendmsg+0x2b/0x40 net/ipv4/tcp.c:1462 inet_sendmsg+0x132/0x5a0 net/ipv4/af_inet.c:798 sock_sendmsg_nosec net/socket.c:651 [inline] sock_sendmsg+0xc3/0x120 net/socket.c:661 sock_write_iter+0x287/0x3c0 net/socket.c:966 call_write_iter include/linux/fs.h:1821 [inline] new_sync_write fs/read_write.c:474 [inline] __vfs_write+0x51b/0x770 fs/read_write.c:487 vfs_write+0x1f3/0x540 fs/read_write.c:549 ksys_write+0x12b/0x2a0 fs/read_write.c:599 do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x7fda137ed970 Code: 73 01 c3 48 8b 0d 28 d5 2b 00 f7 d8 64 89 01 48 83 c8 ff c3 66 0f 1f 44 00 00 83 3d 99 2d 2c 00 00 75 10 b8 01 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 31 c3 48 83 ec 08 e8 7e 9b 01 00 48 89 04 24 RSP: 002b:00007fff38ef9378 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000004024 RCX: 00007fda137ed970 RDX: 0000000000004024 RSI: 00005602804ae6c4 RDI: 0000000000000003 RBP: 00005602804904f0 R08: 00000000000056cb R09: 0000000000006000 R10: 0000000000000008 R11: 0000000000000246 R12: 0000000000000001 R13: 00007fff38ef940f R14: 000056027fb6dbe7 R15: 0000000000000003