INFO: task jbd2/sda1-8:74 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. jbd2/sda1-8 D27120 74 2 0x80000000 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 io_schedule+0x1c/0x70 kernel/sched/core.c:5097 bit_wait_io+0x9/0x90 kernel/sched/wait_bit.c:249 __wait_on_bit+0xad/0x130 kernel/sched/wait_bit.c:51 out_of_line_wait_on_bit+0xd1/0x100 kernel/sched/wait_bit.c:64 wait_on_bit_io include/linux/wait_bit.h:106 [inline] __wait_on_buffer+0x58/0x70 fs/buffer.c:125 wait_on_buffer include/linux/buffer_head.h:354 [inline] journal_wait_on_commit_record fs/jbd2/commit.c:177 [inline] jbd2_journal_commit_transaction+0x484a/0x648c fs/jbd2/commit.c:868 kjournald2+0x244/0x820 fs/jbd2/journal.c:233 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 INFO: task rs:main Q:Reg:1634 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. rs:main Q:Reg D26032 1634 1 0x00000000 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_complete_transaction+0x157/0x1b0 fs/jbd2/journal.c:768 ext4_sync_file+0x79c/0x1050 fs/ext4/fsync.c:154 vfs_fsync_range+0x105/0x260 fs/sync.c:196 generic_write_sync include/linux/fs.h:2689 [inline] ext4_file_write_iter+0x769/0xe20 fs/ext4/file.c:268 call_write_iter include/linux/fs.h:1782 [inline] new_sync_write fs/read_write.c:471 [inline] __vfs_write+0x417/0x5c0 fs/read_write.c:484 vfs_write+0x17f/0x4d0 fs/read_write.c:546 SYSC_write fs/read_write.c:593 [inline] SyS_write+0xc2/0x1a0 fs/read_write.c:585 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x7f740859a19d RSP: 002b:00007f7406b3b000 EFLAGS: 00000293 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 0000000000000050 RCX: 00007f740859a19d RDX: 0000000000000050 RSI: 00000000011eace0 RDI: 0000000000000006 RBP: 00000000011eace0 R08: 00000000011ead20 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000 R13: 00007f7406b3b480 R14: 0000000000000001 R15: 00000000011eaae0 INFO: task syz-executor1:1850 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor1 D26776 1850 1 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_journal_stop+0x8df/0x1280 fs/jbd2/transaction.c:1782 __ext4_journal_stop+0xcd/0x1e0 fs/ext4/ext4_jbd2.c:103 ext4_unlink+0x779/0xeb0 fs/ext4/namei.c:3046 vfs_unlink2+0x23b/0x470 fs/namei.c:4026 do_unlinkat+0x467/0x650 fs/namei.c:4097 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4573c7 RSP: 002b:00007ffc33d7b468 EFLAGS: 00000202 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004573c7 RDX: 00007ffc33d7b480 RSI: 00007ffc33d7b510 RDI: 00007ffc33d7b510 RBP: 00000000000002f2 R08: 0000000000000000 R09: 000000000000000c R10: 0000000000000006 R11: 0000000000000202 R12: 00007ffc33d7c570 R13: 0000000000a9f940 R14: 0000000000000000 R15: badc0ffeebadface INFO: task syz-executor2:1851 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor2 D26368 1851 1 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_journal_stop+0x8df/0x1280 fs/jbd2/transaction.c:1782 __ext4_journal_stop+0xcd/0x1e0 fs/ext4/ext4_jbd2.c:103 ext4_unlink+0x779/0xeb0 fs/ext4/namei.c:3046 vfs_unlink2+0x23b/0x470 fs/namei.c:4026 do_unlinkat+0x467/0x650 fs/namei.c:4097 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4573c7 RSP: 002b:00007ffe4b1ab1b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004573c7 RDX: 00007ffe4b1ab1d0 RSI: 00007ffe4b1ab260 RDI: 00007ffe4b1ab260 RBP: 00000000000002aa R08: 0000000000000000 R09: 000000000000000c R10: 0000000000000006 R11: 0000000000000206 R12: 00007ffe4b1ac2c0 R13: 000000000118c940 R14: 0000000000000000 R15: badc0ffeebadface INFO: task syz-executor0:1852 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27136 1852 1 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_journal_stop+0x8df/0x1280 fs/jbd2/transaction.c:1782 __ext4_journal_stop+0xcd/0x1e0 fs/ext4/ext4_jbd2.c:103 ext4_evict_inode+0xa57/0x1520 fs/ext4/inode.c:334 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 do_unlinkat+0x4bf/0x650 fs/namei.c:4103 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4573c7 RSP: 002b:00007fff47499038 EFLAGS: 00000202 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004573c7 RDX: 00007fff47499050 RSI: 00007fff474990e0 RDI: 00007fff474990e0 RBP: 000000000000025a R08: 0000000000000000 R09: 000000000000000f R10: 000000000000000a R11: 0000000000000202 R12: 00007fff4749a140 R13: 00000000015e8940 R14: 0000000000000000 R15: badc0ffeebadface INFO: task syz-executor5:1853 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor5 D26824 1853 1 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_journal_stop+0x8df/0x1280 fs/jbd2/transaction.c:1782 __ext4_journal_stop+0xcd/0x1e0 fs/ext4/ext4_jbd2.c:103 ext4_mkdir+0x797/0xb40 fs/ext4/namei.c:2659 vfs_mkdir2+0x3cb/0x640 fs/namei.c:3836 SYSC_mkdirat fs/namei.c:3865 [inline] SyS_mkdirat+0x126/0x220 fs/namei.c:3849 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x456ab7 RSP: 002b:00007ffc4d0ad298 EFLAGS: 00000202 ORIG_RAX: 0000000000000053 RAX: ffffffffffffffda RBX: 0000000000027bbb RCX: 0000000000456ab7 RDX: 00007ffc4d0ad2b5 RSI: 00000000000001ff RDI: 00007ffc4d0ad2b0 RBP: 0000000000000299 R08: 0000000000000000 R09: 0000000000000005 R10: 0000000000000064 R11: 0000000000000202 R12: 0000000000000005 R13: 0000000000027ba4 R14: 0000000000000070 R15: badc0ffeebadface INFO: task syz-executor4:1854 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor4 D26448 1854 1 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_journal_stop+0x8df/0x1280 fs/jbd2/transaction.c:1782 __ext4_journal_stop+0xcd/0x1e0 fs/ext4/ext4_jbd2.c:103 ext4_unlink+0x779/0xeb0 fs/ext4/namei.c:3046 vfs_unlink2+0x23b/0x470 fs/namei.c:4026 do_unlinkat+0x467/0x650 fs/namei.c:4097 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4573c7 RSP: 002b:00007ffe332d71b8 EFLAGS: 00000206 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004573c7 RDX: 00007ffe332d71d0 RSI: 00007ffe332d7260 RDI: 00007ffe332d7260 RBP: 00000000000002f0 R08: 0000000000000000 R09: 000000000000000c R10: 0000000000000006 R11: 0000000000000206 R12: 00007ffe332d82c0 R13: 00000000022b2940 R14: 0000000000000000 R15: badc0ffeebadface INFO: task syz-executor3:1855 blocked for more than 140 seconds. Not tainted 4.14.71+ #8 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor3 D27168 1855 1 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_log_wait_commit+0x2a5/0x3f0 fs/jbd2/journal.c:730 jbd2_journal_stop+0x8df/0x1280 fs/jbd2/transaction.c:1782 __ext4_journal_stop+0xcd/0x1e0 fs/ext4/ext4_jbd2.c:103 ext4_evict_inode+0xa57/0x1520 fs/ext4/inode.c:334 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 do_unlinkat+0x4bf/0x650 fs/namei.c:4103 do_syscall_64+0x19b/0x4b0 arch/x86/entry/common.c:289 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x4573c7 RSP: 002b:00007ffe1349ea98 EFLAGS: 00000202 ORIG_RAX: 0000000000000057 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00000000004573c7 RDX: 00007ffe1349eab0 RSI: 00007ffe1349eb40 RDI: 00007ffe1349eb40 RBP: 000000000000024f R08: 0000000000000000 R09: 000000000000000f R10: 000000000000000a R11: 0000000000000202 R12: 00007ffe1349fba0 R13: 0000000000ed5940 R14: 0000000000000000 R15: badc0ffeebadface Showing all locks held in the system: 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x74/0x20f kernel/locking/lockdep.c:4541 2 locks held by rs:main Q:Reg/1634: #0: (&f->f_pos_lock){+.+.}, at: [] __fdget_pos+0xa2/0xc0 fs/file.c:768 #1: (sb_writers#4){.+.+}, at: [] file_start_write include/linux/fs.h:2722 [inline] #1: (sb_writers#4){.+.+}, at: [] vfs_write+0x3d7/0x4d0 fs/read_write.c:545 2 locks held by getty/1764: #0: (&tty->ldisc_sem){++++}, at: [] tty_ldisc_ref_wait+0x20/0x80 drivers/tty/tty_ldisc.c:275 #1: (&ldata->atomic_read_lock){+.+.}, at: [] n_tty_read+0x1ff/0x15e0 drivers/tty/n_tty.c:2142 3 locks held by syz-executor1/1850: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:748 [inline] #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] do_unlinkat+0x273/0x650 fs/namei.c:4083 #2: (&sb->s_type->i_mutex_key#10){++++}, at: [] inode_lock include/linux/fs.h:713 [inline] #2: (&sb->s_type->i_mutex_key#10){++++}, at: [] vfs_unlink2+0xc5/0x470 fs/namei.c:4017 3 locks held by syz-executor2/1851: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:748 [inline] #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] do_unlinkat+0x273/0x650 fs/namei.c:4083 #2: (&sb->s_type->i_mutex_key#10){++++}, at: [] inode_lock include/linux/fs.h:713 [inline] #2: (&sb->s_type->i_mutex_key#10){++++}, at: [] vfs_unlink2+0xc5/0x470 fs/namei.c:4017 2 locks held by syz-executor0/1852: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #1: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 2 locks held by syz-executor5/1853: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:748 [inline] #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] filename_create+0x15d/0x450 fs/namei.c:3655 3 locks held by syz-executor4/1854: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] inode_lock_nested include/linux/fs.h:748 [inline] #1: (&type->i_mutex_dir_key/1){+.+.}, at: [] do_unlinkat+0x273/0x650 fs/namei.c:4083 #2: (&sb->s_type->i_mutex_key#10){++++}, at: [] inode_lock include/linux/fs.h:713 [inline] #2: (&sb->s_type->i_mutex_key#10){++++}, at: [] vfs_unlink2+0xc5/0x470 fs/namei.c:4017 2 locks held by syz-executor3/1855: #0: (sb_writers#4){.+.+}, at: [] sb_start_write include/linux/fs.h:1543 [inline] #0: (sb_writers#4){.+.+}, at: [] mnt_want_write+0x3a/0xa0 fs/namespace.c:387 #1: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #1: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 1 lock held by init/8037: #0: (sb_writers#4){.+.+}, at: [] file_start_write include/linux/fs.h:2722 [inline] #0: (sb_writers#4){.+.+}, at: [] vfs_write+0x3d7/0x4d0 fs/read_write.c:545 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.71+ #8 Call Trace: __dump_stack lib/dump_stack.c:17 [inline] dump_stack+0xb9/0x11b lib/dump_stack.c:53 nmi_cpu_backtrace.cold.0+0x47/0x85 lib/nmi_backtrace.c:101 nmi_trigger_cpumask_backtrace+0x121/0x146 lib/nmi_backtrace.c:62 trigger_all_cpu_backtrace include/linux/nmi.h:138 [inline] check_hung_uninterruptible_tasks kernel/hung_task.c:196 [inline] watchdog+0x574/0xa70 kernel/hung_task.c:252 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 Sending NMI from CPU 1 to CPUs 0: NMI backtrace for cpu 0 CPU: 0 PID: 8023 Comm: syz-executor1 Not tainted 4.14.71+ #8 task: ffff88019c298000 task.stack: ffff8801cdee0000 RIP: 0033:0x401574 RSP: 002b:00007f8db5528690 EFLAGS: 00000202 RAX: 0000000063bd75ad RBX: 0000000000000007 RCX: 0000000000457679 RDX: 0000000000000000 RSI: 00007f8db55286c0 RDI: 0000000000000007 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000ffffffff R13: 00000000004d7950 R14: 00000000004c48c6 R15: 0000000000000000 FS: 00007f8db5529700(0000) GS:ffff8801dba00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000400200 CR3: 00000001d4c10002 CR4: 00000000001606b0 DR0: 0000000020000040 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000600