INFO: task syz-executor.4:6149 blocked for more than 143 seconds. Not tainted 5.14.0-rc5-syzkaller #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz-executor.4 state:D stack:13632 pid: 6149 ppid: 2500 flags:0x00004006 Call Trace: context_switch kernel/sched/core.c:4681 [inline] __schedule+0x394/0x1390 kernel/sched/core.c:5938 schedule+0x3e/0xe0 kernel/sched/core.c:6017 io_schedule+0x3d/0x60 kernel/sched/core.c:7988 wait_on_page_bit_common+0x116/0x440 mm/filemap.c:1301 wait_on_page_bit mm/filemap.c:1362 [inline] wait_on_page_locked include/linux/pagemap.h:689 [inline] wait_on_page_read mm/filemap.c:3312 [inline] do_read_cache_page+0x2b8/0x4e0 mm/filemap.c:3355 read_mapping_page include/linux/pagemap.h:515 [inline] ntfs_map_page fs/ntfs3/ntfs_fs.h:844 [inline] ntfs_fill_super+0xb96/0x11d0 fs/ntfs3/super.c:1191 mount_bdev+0x182/0x1b0 fs/super.c:1368 legacy_get_tree+0x28/0x50 fs/fs_context.c:610 vfs_get_tree+0x18/0x70 fs/super.c:1498 do_new_mount fs/namespace.c:2905 [inline] path_mount+0x2b1/0xb40 fs/namespace.c:3235 do_mount fs/namespace.c:3248 [inline] __do_sys_mount fs/namespace.c:3456 [inline] __se_sys_mount fs/namespace.c:3433 [inline] __x64_sys_mount+0xfe/0x140 fs/namespace.c:3433 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f451215d22a RSP: 002b:00007f4511cddee8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f4511cddf80 RCX: 00007f451215d22a RDX: 0000000020000180 RSI: 0000000020000080 RDI: 00007f4511cddf40 RBP: 0000000020000180 R08: 00007f4511cddf80 R09: 0000000000000800 R10: 0000000000000800 R11: 0000000000000246 R12: 0000000020000080 R13: 00007f4511cddf40 R14: 000000000001f419 R15: 0000000020000100 Showing all locks held in the system: 1 lock held by khungtaskd/567: #0: ffffffff82f75c40 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x15/0xf7 kernel/locking/lockdep.c:6447 2 locks held by getty/1917: #0: ffff888143b83098 (&tty->ldisc_sem){....}-{0:0}, at: tty_ldisc_ref_wait+0x1f/0x50 drivers/tty/tty_ldisc.c:252 #1: ffffc900041872e8 (&ldata->atomic_read_lock){....}-{3:3}, at: n_tty_read+0x479/0x5a0 drivers/tty/n_tty.c:2113 1 lock held by syz-executor.4/6149: #0: ffff888109d3f0e0 (&type->s_umount_key#44/1){....}-{3:3}, at: alloc_super+0xd0/0x3b0 fs/super.c:229 1 lock held by syz-executor.3/7755: #0: ffff88811dd410e0 (&type->s_umount_key#44/1){....}-{3:3}, at: alloc_super+0xd0/0x3b0 fs/super.c:229 2 locks held by syz-executor.4/7810: 4 locks held by syz-executor.4/7815: 1 lock held by syz-executor.2/7804: 3 locks held by syz-executor.2/7817: 4 locks held by syz-executor.5/7806: 4 locks held by syz-executor.5/7818: 1 lock held by syz-executor.1/7808: 2 locks held by syz-executor.1/7819: 1 lock held by syz-executor.0/7811: 1 lock held by syz-executor.0/7822: ============================================= NMI backtrace for cpu 0 CPU: 0 PID: 567 Comm: khungtaskd Not tainted 5.14.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 Call Trace: __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x41/0x5e lib/dump_stack.c:105 nmi_cpu_backtrace.cold+0x30/0x66 lib/nmi_backtrace.c:105 nmi_trigger_cpumask_backtrace+0xc7/0xe0 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline] watchdog+0x4e4/0x500 kernel/hung_task.c:295 kthread+0x133/0x150 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Sending NMI from CPU 0 to CPUs 1: NMI backtrace for cpu 1 CPU: 1 PID: 7822 Comm: syz-executor.0 Not tainted 5.14.0-rc5-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2023 RIP: 0010:unwind_next_frame+0x2e2/0x6f0 arch/x86/kernel/unwind_orc.c:466 Code: 84 6e 03 00 00 80 7b 36 00 75 0d 48 8b 43 58 48 85 c0 0f 84 5b 03 00 00 48 8b 40 38 48 89 04 24 e9 69 ff ff ff 48 0f bf 45 00 <48> 03 43 38 48 89 04 24 e9 57 ff ff ff 48 0f bf 45 00 48 03 43 40 RSP: 0018:ffffc905e2e0b7d0 EFLAGS: 00000297 RAX: 00000000000000a0 RBX: ffffc905e2e0b818 RCX: ffffffff83256594 RDX: 0000000000000005 RSI: ffffffff83256590 RDI: ffffffff8124f172 RBP: ffffffff8350ac74 R08: ffffffff83256574 R09: ffffffff8350ac4a R10: 0000000000000007 R11: ffff88813bd17808 R12: ffffffff8124f172 R13: 0000000000000001 R14: ffffffff8124f173 R15: ffffc905e2e0b8d8 FS: 00007f95d5f176c0(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f95d5ef6d58 CR3: 0000000121336000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: arch_stack_walk+0x7d/0xe0 arch/x86/kernel/stacktrace.c:25 stack_trace_save+0x46/0x70 kernel/stacktrace.c:121 save_stack+0x73/0xa0 mm/page_owner.c:119 __set_page_owner+0x32/0xc0 mm/page_owner.c:181 prep_new_page mm/page_alloc.c:2436 [inline] get_page_from_freelist+0x8c8/0x1330 mm/page_alloc.c:4169 __alloc_pages+0xe1/0x260 mm/page_alloc.c:5391 ni_write_frame+0x11b/0x590 fs/ntfs3/frecord.c:2715 ntfs_compress_write fs/ntfs3/file.c:1051 [inline] ntfs_file_write_iter+0x856/0xa70 fs/ntfs3/file.c:1139 call_write_iter include/linux/fs.h:2114 [inline] do_iter_readv_writev+0x14d/0x1a0 fs/read_write.c:740 do_iter_write+0x7a/0x1a0 fs/read_write.c:866 iter_file_splice_write+0x28f/0x430 fs/splice.c:689 do_splice_from fs/splice.c:767 [inline] direct_splice_actor+0x24/0x40 fs/splice.c:936 splice_direct_to_actor+0xd5/0x200 fs/splice.c:891 do_splice_direct+0x8c/0xd0 fs/splice.c:979 do_sendfile+0x323/0x510 fs/read_write.c:1260 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0x80 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x44/0xae RIP: 0033:0x7f95de5b5b29 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f95d5f170c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028 RAX: ffffffffffffffda RBX: 00007f95de6d5050 RCX: 00007f95de5b5b29 RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006 RBP: 00007f95de60147a R08: 0000000000000000 R09: 0000000000000000 R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000006e R14: 00007f95de6d5050 R15: 00007ffdb9741a48