INFO: task syz-executor.1:23275 blocked for more than 143 seconds. Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26048 pid:23275 ppid:3685 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5209 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6521 schedule+0xde/0x1b0 kernel/sched/core.c:6597 io_schedule+0xbe/0x130 kernel/sched/core.c:8741 folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1296 __folio_lock mm/filemap.c:1659 [inline] folio_lock include/linux/pagemap.h:939 [inline] folio_lock include/linux/pagemap.h:935 [inline] __filemap_get_folio+0xb7a/0xd90 mm/filemap.c:1931 truncate_inode_pages_range+0x386/0x1030 mm/truncate.c:378 truncate_inode_pages mm/truncate.c:452 [inline] truncate_pagecache+0x67/0x90 mm/truncate.c:753 ntfs_truncate fs/ntfs3/file.c:491 [inline] ntfs3_setattr+0x4fe/0xc00 fs/ntfs3/file.c:792 notify_change+0xcd4/0x1440 fs/attr.c:420 do_truncate+0x140/0x200 fs/open.c:65 do_sys_ftruncate+0x53a/0x730 fs/open.c:193 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f43e6a8c0d9 RSP: 002b:00007f43e77b4168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d RAX: ffffffffffffffda RBX: 00007f43e6babf80 RCX: 00007f43e6a8c0d9 RDX: 0000000000000000 RSI: 0000000000000096 RDI: 0000000000000004 RBP: 00007f43e6ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf4473def R14: 00007f43e77b4300 R15: 0000000000022000 INFO: task syz-executor.1:23297 blocked for more than 143 seconds. Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:26376 pid:23297 ppid:3685 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5209 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6521 schedule+0xde/0x1b0 kernel/sched/core.c:6597 schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6656 __mutex_lock_common kernel/locking/mutex.c:679 [inline] __mutex_lock+0xa48/0x1360 kernel/locking/mutex.c:747 ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline] attr_data_get_block+0x1df/0x1590 fs/ntfs3/attrib.c:917 ntfs_get_block_vbo+0x2fd/0x1400 fs/ntfs3/inode.c:564 __block_write_full_page+0x35e/0x1ad0 fs/buffer.c:1745 block_write_full_page+0x151/0x190 fs/buffer.c:2630 __mpage_writepage+0x4b8/0x1ae0 fs/mpage.c:629 write_cache_pages+0x785/0x19c0 mm/page-writeback.c:2360 mpage_writepages+0xc6/0x170 fs/mpage.c:664 ntfs_writepages fs/ntfs3/inode.c:855 [inline] ntfs_writepages+0x7b/0xc0 fs/ntfs3/inode.c:849 do_writepages+0x1af/0x690 mm/page-writeback.c:2469 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] filemap_fdatawrite_wbc+0x147/0x1b0 mm/filemap.c:378 __filemap_fdatawrite_range+0xb8/0xf0 mm/filemap.c:421 filemap_write_and_wait_range+0x89/0x110 mm/filemap.c:674 generic_file_read_iter+0x3ce/0x5a0 mm/filemap.c:2789 ntfs_file_read_iter+0x1b8/0x270 fs/ntfs3/file.c:853 call_read_iter include/linux/fs.h:2193 [inline] do_iter_readv_writev+0x2e0/0x3b0 fs/read_write.c:733 do_iter_read+0x2f2/0x750 fs/read_write.c:796 vfs_readv+0xe5/0x150 fs/read_write.c:916 do_preadv+0x1b6/0x270 fs/read_write.c:1008 __do_sys_preadv2 fs/read_write.c:1070 [inline] __se_sys_preadv2 fs/read_write.c:1061 [inline] __x64_sys_preadv2+0xef/0x150 fs/read_write.c:1061 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f43e6a8c0d9 RSP: 002b:00007f43e7793168 EFLAGS: 00000246 ORIG_RAX: 0000000000000147 RAX: ffffffffffffffda RBX: 00007f43e6bac050 RCX: 00007f43e6a8c0d9 RDX: 0000000000000001 RSI: 0000000020000100 RDI: 0000000000000004 RBP: 00007f43e6ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf4473def R14: 00007f43e7793300 R15: 0000000000022000 INFO: task syz-executor.1:23298 blocked for more than 144 seconds. Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.1 state:D stack:27056 pid:23298 ppid:3685 flags:0x00004004 Call Trace: context_switch kernel/sched/core.c:5209 [inline] __schedule+0xae9/0x53f0 kernel/sched/core.c:6521 schedule+0xde/0x1b0 kernel/sched/core.c:6597 io_schedule+0xbe/0x130 kernel/sched/core.c:8741 folio_wait_bit_common+0x394/0x9b0 mm/filemap.c:1296 lock_page include/linux/pagemap.h:960 [inline] write_cache_pages+0xc22/0x19c0 mm/page-writeback.c:2327 mpage_writepages+0xc6/0x170 fs/mpage.c:664 ntfs_writepages fs/ntfs3/inode.c:855 [inline] ntfs_writepages+0x7b/0xc0 fs/ntfs3/inode.c:849 do_writepages+0x1af/0x690 mm/page-writeback.c:2469 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] filemap_fdatawrite_wbc+0x147/0x1b0 mm/filemap.c:378 __filemap_fdatawrite_range+0xb8/0xf0 mm/filemap.c:421 filemap_write_and_wait_range+0x89/0x110 mm/filemap.c:674 generic_file_read_iter+0x3ce/0x5a0 mm/filemap.c:2789 ntfs_file_read_iter+0x1b8/0x270 fs/ntfs3/file.c:853 call_read_iter include/linux/fs.h:2193 [inline] generic_file_splice_read+0x182/0x4b0 fs/splice.c:309 do_splice_to+0x1b9/0x240 fs/splice.c:793 splice_file_to_pipe+0x104/0x120 fs/splice.c:1013 do_sendfile+0x42a/0x1270 fs/read_write.c:1262 __do_sys_sendfile64 fs/read_write.c:1317 [inline] __se_sys_sendfile64 fs/read_write.c:1309 [inline] __x64_sys_sendfile64+0x14d/0x210 fs/read_write.c:1309 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f43e6a8c0d9 RSP: 002b:00007f43e7772168 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f43e6bac120 RCX: 00007f43e6a8c0d9 RDX: 0000000020000080 RSI: 0000000000000004 RDI: 0000000000000000 RBP: 00007f43e6ae7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000002 R11: 0000000000000246 R12: 0000000000000000 R13: 00007ffcf4473def R14: 00007f43e7772300 R15: 0000000000022000 Showing all locks held in the system: 1 lock held by rcu_tasks_kthre/12: #0: ffffffff8c58f070 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by rcu_tasks_trace/13: #0: ffffffff8c58ed70 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xc70 kernel/rcu/tasks.h:507 1 lock held by khungtaskd/27: #0: ffffffff8c58fbc0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x57/0x264 kernel/locking/lockdep.c:6494 2 locks held by kworker/u4:2/40: #0: ffff8880b9b3b158 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2f/0x120 kernel/sched/core.c:537 #1: ffff8880b9b28808 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2de/0x930 kernel/sched/psi.c:909 2 locks held by getty/3307: #0: ffff88802820a098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x26/0x80 drivers/tty/tty_ldisc.c:244 #1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xef4/0x13e0 drivers/tty/n_tty.c:2177 1 lock held by syz-fuzzer/3666: #0: ffff888078dcb068 (&pipe->mutex/1){+.+.}-{3:3}, at: __pipe_lock fs/pipe.c:103 [inline] #0: ffff888078dcb068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_release+0x4d/0x310 fs/pipe.c:719 3 locks held by kworker/u4:6/15543: #0: ffff888140174138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline] #0: ffff888140174138 ((wq_completion)writeback){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline] #0: ffff888140174138 ((wq_completion)writeback){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline] #0: ffff888140174138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline] #0: ffff888140174138 ((wq_completion)writeback){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline] #0: ffff888140174138 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work+0x86d/0x1710 kernel/workqueue.c:2260 #1: ffffc90014c47da8 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work+0x8a1/0x1710 kernel/workqueue.c:2264 #2: ffff88803d49e0e0 (&type->s_umount_key#55){++++}-{3:3}, at: trylock_super+0x21/0x110 fs/super.c:415 3 locks held by syz-executor.1/23275: #0: ffff88803d49e460 (sb_writers#16){.+.+}-{0:0}, at: do_syscall_x64 arch/x86/entry/common.c:50 [inline] #0: ffff88803d49e460 (sb_writers#16){.+.+}-{0:0}, at: do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 #1: ffff88808a396380 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline] #1: ffff88808a396380 (&sb->s_type->i_mutex_key#26){+.+.}-{3:3}, at: do_truncate+0x12e/0x200 fs/open.c:63 #2: ffff88808a3960e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline] #2: ffff88808a3960e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs_truncate fs/ntfs3/file.c:489 [inline] #2: ffff88808a3960e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ntfs3_setattr+0x4ef/0xc00 fs/ntfs3/file.c:792 1 lock held by syz-executor.1/23297: #0: ffff88808a3960e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: ni_lock fs/ntfs3/ntfs_fs.h:1108 [inline] #0: ffff88808a3960e0 (&ni->ni_lock/4){+.+.}-{3:3}, at: attr_data_get_block+0x1df/0x1590 fs/ntfs3/attrib.c:917 1 lock held by syz-executor.1/23298: #0: ffff888078dcb068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock_nested fs/pipe.c:82 [inline] #0: ffff888078dcb068 (&pipe->mutex/1){+.+.}-{3:3}, at: pipe_lock+0x5e/0x70 fs/pipe.c:90 ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 27 Comm: khungtaskd Not tainted 6.1.0-rc8-syzkaller-00003-gbce9332220bd #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd1/0x138 lib/dump_stack.c:106 nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111 nmi_trigger_cpumask_backtrace+0x333/0x3c0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline] watchdog+0xc75/0xfc0 kernel/hung_task.c:377 kthread+0x2e8/0x3a0 kernel/kthread.c:376 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:51 [inline] NMI backtrace for cpu 1 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:89 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_safe_halt drivers/acpi/processor_idle.c:112 [inline] NMI backtrace for cpu 1 skipped: idling at acpi_idle_do_entry+0x1fd/0x2a0 drivers/acpi/processor_idle.c:572