loop4: p95 start 10 is beyond EOD, truncated loop4: p96 start 10 is beyond EOD, truncated loop4: p97 start 10 is beyond EOD, truncated loop4: p98 start 10 is beyond EOD, truncated loop4: p99 start 10 is beyond EOD, truncated INFO: task segctord:13109 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. segctord D30088 13109 2 0x80000000 loop4: p100 start 10 is beyond EOD, truncated loop4: p101 start 10 is beyond EOD, truncated Call Trace: context_switch kernel/sched/core.c:2828 [inline] __schedule+0x887/0x2040 kernel/sched/core.c:3517 loop4: p102 start 10 is beyond EOD, truncated loop4: p103 start 10 is beyond EOD, truncated schedule+0x8d/0x1b0 kernel/sched/core.c:3561 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:589 [inline] rwsem_down_write_failed+0x3aa/0x760 kernel/locking/rwsem-xadd.c:618 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:117 loop4: p104 start 10 is beyond EOD, truncated loop4: p105 start 10 is beyond EOD, truncated loop4: p106 start 10 is beyond EOD, truncated __down_write arch/x86/include/asm/rwsem.h:142 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:72 loop4: p107 start 10 is beyond EOD, truncated loop4: p108 start 10 is beyond EOD, truncated loop4: p109 start 10 is beyond EOD, truncated nilfs_transaction_lock+0x1fb/0x8b0 fs/nilfs2/segment.c:362 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2479 [inline] nilfs_segctor_thread+0x3c0/0xf50 fs/nilfs2/segment.c:2563 loop4: p110 start 10 is beyond EOD, truncated loop4: p111 start 10 is beyond EOD, truncated loop4: p112 start 10 is beyond EOD, truncated loop4: p113 start 10 is beyond EOD, truncated loop4: p114 start 10 is beyond EOD, truncated loop4: p115 start 10 is beyond EOD, truncated loop4: p116 start 10 is beyond EOD, truncated kthread+0x33f/0x460 kernel/kthread.c:259 loop4: p117 start 10 is beyond EOD, truncated loop4: p118 start 10 is beyond EOD, truncated ret_from_fork+0x24/0x30 arch/x86/entry/entry_64.S:415 Showing all locks held in the system: loop4: p119 start 10 is beyond EOD, truncated 4 locks held by kworker/u4:2/46: loop4: p120 start 10 is beyond EOD, truncated loop4: p121 start 10 is beyond EOD, truncated 1 lock held by khungtaskd/1570: loop4: p122 start 10 is beyond EOD, truncated loop4: p123 start 10 is beyond EOD, truncated #0: 000000001bc716ee (rcu_read_lock){....}, at: debug_show_all_locks+0x53/0x265 kernel/locking/lockdep.c:4441 loop4: p124 start 10 is beyond EOD, truncated loop4: p125 start 10 is beyond EOD, truncated 1 lock held by in:imklog/7811: loop4: p126 start 10 is beyond EOD, truncated loop4: p127 start 10 is beyond EOD, truncated #0: 00000000c0f42388 (&f->f_pos_lock){+.+.}, at: __fdget_pos+0x26f/0x310 fs/file.c:767 6 locks held by syz-executor.5/13104: loop4: p128 start 10 is beyond EOD, truncated loop4: p129 start 10 is beyond EOD, truncated 1 lock held by segctord/13109: #0: 00000000a4e42105 (&nilfs->ns_segctor_sem){++++}, at: nilfs_transaction_lock+0x1fb/0x8b0 fs/nilfs2/segment.c:362 loop4: p130 start 10 is beyond EOD, truncated loop4: p131 start 10 is beyond EOD, truncated 2 locks held by kworker/u4:11/16649: loop4: p132 start 10 is beyond EOD, truncated loop4: p133 start 10 is beyond EOD, truncated #0: 0000000022c1c36f (&rq->lock){-.-.}, at: rq_lock kernel/sched/sched.h:1826 [inline] #0: 0000000022c1c36f (&rq->lock){-.-.}, at: __schedule+0x1f9/0x2040 kernel/sched/core.c:3455 #1: 000000001bc716ee (rcu_read_lock){....}, at: trace_sched_stat_runtime include/trace/events/sched.h:428 [inline] #1: 000000001bc716ee (rcu_read_lock){....}, at: update_curr+0x2c3/0x870 kernel/sched/fair.c:857 1 lock held by systemd-udevd/21432: #0: 00000000657d4e3b (&bdev->bd_mutex){+.+.}, at: __blkdev_get+0x1d0/0x1480 fs/block_dev.c:1478 2 locks held by syz-executor.1/21613: 5 locks held by syz-executor.4/21642: ============================================= loop4: p134 start 10 is beyond EOD, truncated loop4: p135 start 10 is beyond EOD, truncated loop4: p136 start 10 is beyond EOD, truncated loop4: p137 start 10 is beyond EOD, truncated loop4: p138 start 10 is beyond EOD, truncated loop4: p139 start 10 is beyond EOD, truncated loop4: p140 start 10 is beyond EOD, truncated NMI backtrace for cpu 1 CPU: 1 PID: 1570 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: 46 Comm: kworker/u4:2 Not tainted 4.19.211-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Workqueue: netns cleanup_net RIP: 0010:__lock_release kernel/locking/lockdep.c:3714 [inline] RIP: 0010:lock_release+0x52c/0x8b0 kernel/locking/lockdep.c:3927 Code: 65 ff 0d 57 90 b6 7e 0f 85 49 fc ff ff e8 2e ee b4 ff e9 3f fc ff ff 48 b8 00 00 00 00 00 fc ff df 48 8b 54 24 08 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e 16 03 00 00 45 8d 4f ff 45 39 RSP: 0018:ffff8880b517fa90 EFLAGS: 00000802 RAX: dffffc0000000000 RBX: 0000000000000003 RCX: 1ffff11016a2a1c0 RDX: 1ffff11016a2a1b0 RSI: 0000000000000004 RDI: ffff8880b5150500 RBP: 0000000000000003 R08: 0000000000000000 R09: 0000000000000001 R10: 0000000000000000 R11: 0000000000000000 R12: 1ffff11016a2ff55 R13: bb01680755e95ff6 R14: ffff8880b5150500 R15: 0000000000000004 FS: 0000000000000000(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000100000000 CR3: 000000009edba000 CR4: 00000000003406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: rcu_lock_release include/linux/rcupdate.h:247 [inline] rcu_read_unlock include/linux/rcupdate.h:681 [inline] inet_twsk_purge+0x558/0x7c0 net/ipv4/inet_timewait_sock.c:298 ops_exit_list+0xf9/0x150 net/core/net_namespace.c:156 cleanup_net+0x3b4/0x8b0 net/core/net_namespace.c:554 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 loop4: p141 start 10 is beyond EOD, truncated