INFO: task init:1 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. init D24664 1 0 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_dirty_inode+0x4f/0xa0 fs/ext4/inode.c:5938 __mark_inode_dirty+0x108/0x1060 fs/fs-writeback.c:2097 generic_update_time+0x1a5/0x270 fs/inode.c:1650 update_time fs/inode.c:1666 [inline] file_update_time+0x262/0x390 fs/inode.c:1877 __generic_file_write_iter+0x1bc/0x540 mm/filemap.c:3112 ext4_file_write_iter+0x4f6/0xe20 fs/ext4/file.c:264 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: 0033:0x7f0d88d9f370 RSP: 002b:00007ffe424ffc18 EFLAGS: 00000246 ORIG_RAX: 0000000000000001 RAX: ffffffffffffffda RBX: 00000000ffffffff RCX: 00007f0d88d9f370 RDX: 0000000000000180 RSI: 00007ffe424fff70 RDI: 0000000000000001 RBP: 0000000000000001 R08: 00007ffe424ffd70 R09: 0000000080000000 R10: 0000000000000008 R11: 0000000000000246 R12: 00000000ffffffff R13: 00007ffe424fff70 R14: 000000000001cc80 R15: 00007ffe424ffc30 INFO: task jbd2/sda1-8:75 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. jbd2/sda1-8 D27056 75 2 0x80000000 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 jbd2_journal_commit_transaction+0x724/0x648c fs/jbd2/commit.c:437 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 kworker/u4:2:374 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. kworker/u4:2 D26184 374 2 0x80000000 Workqueue: writeback wb_workfn (flush-8:0) Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_writepages+0x105e/0x3040 fs/ext4/inode.c:2867 do_writepages+0xe0/0x270 mm/page-writeback.c:2341 __writeback_single_inode+0xd8/0x1020 fs/fs-writeback.c:1320 writeback_sb_inodes+0x468/0xcd0 fs/fs-writeback.c:1584 __writeback_inodes_wb+0xf8/0x1e0 fs/fs-writeback.c:1653 wb_writeback+0x4ee/0xb90 fs/fs-writeback.c:1762 wb_check_old_data_flush fs/fs-writeback.c:1875 [inline] wb_do_writeback fs/fs-writeback.c:1899 [inline] wb_workfn+0x85d/0xe00 fs/fs-writeback.c:1928 process_one_work+0x86e/0x15c0 kernel/workqueue.c:2114 worker_thread+0xdc/0x1000 kernel/workqueue.c:2248 kthread+0x348/0x420 kernel/kthread.c:232 ret_from_fork+0x3a/0x50 arch/x86/entry/entry_64.S:402 INFO: task syz-executor0:6225 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27888 6225 1856 0x80000002 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_evict_inode+0x59b/0x1520 fs/ext4/inode.c:255 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:373 __dentry_kill+0x31b/0x590 fs/dcache.c:577 dentry_kill fs/dcache.c:618 [inline] dput.part.6+0x4b5/0x710 fs/dcache.c:833 dput+0x1b/0x30 fs/dcache.c:797 path_put+0x2d/0x60 fs/namei.c:516 unix_release_sock+0x494/0x9b0 net/unix/af_unix.c:564 unix_release+0x3f/0x80 net/unix/af_unix.c:837 __sock_release+0xce/0x250 net/socket.c:602 sock_close+0x15/0x20 net/socket.c:1138 __fput+0x25e/0x6f0 fs/file_table.c:210 task_work_run+0x116/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8f8/0x2800 kernel/exit.c:865 do_group_exit+0x100/0x2e0 kernel/exit.c:968 get_signal+0x4e5/0x1470 kernel/signal.c:2348 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457579 RSP: 002b:00007f8447dcdcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bf08 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072bf08 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072bf0c R13: 00007ffd2f9f9c0f R14: 00007f8447dce9c0 R15: 0000000000000000 INFO: task syz-executor0:7250 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28288 7250 1856 0x80000000 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_evict_inode+0x59b/0x1520 fs/ext4/inode.c:255 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:373 __dentry_kill+0x31b/0x590 fs/dcache.c:577 dentry_kill fs/dcache.c:618 [inline] dput.part.6+0x4b5/0x710 fs/dcache.c:833 dput+0x1b/0x30 fs/dcache.c:797 path_put+0x2d/0x60 fs/namei.c:516 free_fs_struct+0x1e/0x60 fs/fs_struct.c:91 exit_fs+0xd6/0x110 fs/fs_struct.c:109 do_exit+0x8d5/0x2800 kernel/exit.c:861 do_group_exit+0x100/0x2e0 kernel/exit.c:968 get_signal+0x4e5/0x1470 kernel/signal.c:2348 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457579 RSP: 002b:00007f8447dcdc78 EFLAGS: 00000246 ORIG_RAX: 0000000000000023 RAX: fffffffffffffdfc RBX: 0000000000000002 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 00000000200000c0 RDI: 0000000020000080 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f8447dce6d4 R13: 00000000004bd9e2 R14: 00000000004d3fc0 R15: 00000000ffffffff INFO: task syz-executor0:7820 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28728 7820 1856 0x80000000 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_evict_inode+0x59b/0x1520 fs/ext4/inode.c:255 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:373 __dentry_kill+0x31b/0x590 fs/dcache.c:577 dentry_kill fs/dcache.c:618 [inline] dput.part.6+0x4b5/0x710 fs/dcache.c:833 dput+0x1b/0x30 fs/dcache.c:797 path_put+0x2d/0x60 fs/namei.c:516 free_fs_struct+0x1e/0x60 fs/fs_struct.c:91 exit_fs+0xd6/0x110 fs/fs_struct.c:109 do_exit+0x8d5/0x2800 kernel/exit.c:861 do_group_exit+0x100/0x2e0 kernel/exit.c:968 get_signal+0x4e5/0x1470 kernel/signal.c:2348 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457579 RSP: 002b:00007f8447dcdcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bf08 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072bf08 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072bf0c R13: 00007ffd2f9f9c0f R14: 00007f8447dce9c0 R15: 0000000000000000 INFO: task syz-executor0:8190 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28728 8190 1856 0x80000002 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_evict_inode+0x59b/0x1520 fs/ext4/inode.c:255 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:373 __dentry_kill+0x31b/0x590 fs/dcache.c:577 dentry_kill fs/dcache.c:618 [inline] dput.part.6+0x4b5/0x710 fs/dcache.c:833 dput+0x1b/0x30 fs/dcache.c:797 path_put+0x2d/0x60 fs/namei.c:516 free_fs_struct+0x1e/0x60 fs/fs_struct.c:91 exit_fs+0xd6/0x110 fs/fs_struct.c:109 do_exit+0x8d5/0x2800 kernel/exit.c:861 do_group_exit+0x100/0x2e0 kernel/exit.c:968 get_signal+0x4e5/0x1470 kernel/signal.c:2348 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457579 RSP: 002b:00007f8447dcdcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bf08 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072bf08 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072bf0c R13: 00007ffd2f9f9c0f R14: 00007f8447dce9c0 R15: 0000000000000000 INFO: task syz-executor0:8242 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27672 8242 1856 0x80000002 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_evict_inode+0x59b/0x1520 fs/ext4/inode.c:255 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:373 __dentry_kill+0x31b/0x590 fs/dcache.c:577 dentry_kill fs/dcache.c:618 [inline] dput.part.6+0x4b5/0x710 fs/dcache.c:833 dput+0x1b/0x30 fs/dcache.c:797 __fput+0x42c/0x6f0 fs/file_table.c:228 task_work_run+0x116/0x190 kernel/task_work.c:113 exit_task_work include/linux/task_work.h:22 [inline] do_exit+0x8f8/0x2800 kernel/exit.c:865 do_group_exit+0x100/0x2e0 kernel/exit.c:968 get_signal+0x4e5/0x1470 kernel/signal.c:2348 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457579 RSP: 002b:00007f8447daccf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bfa8 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072bfa8 RBP: 000000000072bfa0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072bfac R13: 00007ffd2f9f9c0f R14: 00007f8447dad9c0 R15: 0000000000000001 INFO: task syz-executor0:9425 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D27536 9425 1856 0x80000000 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 wait_transaction_locked+0x1a1/0x220 fs/jbd2/transaction.c:164 add_transaction_credits+0x403/0x970 fs/jbd2/transaction.c:192 start_this_handle+0x368/0xfc0 fs/jbd2/transaction.c:362 jbd2__journal_start+0x30a/0x8b0 fs/jbd2/transaction.c:444 __ext4_journal_start_sb+0x109/0x460 fs/ext4/ext4_jbd2.c:81 __ext4_journal_start fs/ext4/ext4_jbd2.h:314 [inline] ext4_evict_inode+0x59b/0x1520 fs/ext4/inode.c:255 evict+0x2cb/0x5f0 fs/inode.c:554 iput_final fs/inode.c:1516 [inline] iput+0x373/0x8e0 fs/inode.c:1543 dentry_unlink_inode+0x25c/0x310 fs/dcache.c:373 __dentry_kill+0x31b/0x590 fs/dcache.c:577 dentry_kill fs/dcache.c:618 [inline] dput.part.6+0x4b5/0x710 fs/dcache.c:833 dput+0x1b/0x30 fs/dcache.c:797 path_put+0x2d/0x60 fs/namei.c:516 free_fs_struct+0x1e/0x60 fs/fs_struct.c:91 exit_fs+0xd6/0x110 fs/fs_struct.c:109 do_exit+0x8d5/0x2800 kernel/exit.c:861 do_group_exit+0x100/0x2e0 kernel/exit.c:968 get_signal+0x4e5/0x1470 kernel/signal.c:2348 do_signal+0x8f/0x1660 arch/x86/kernel/signal.c:809 exit_to_usermode_loop+0x116/0x150 arch/x86/entry/common.c:159 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x457579 RSP: 002b:00007f8447dcdcf8 EFLAGS: 00000246 ORIG_RAX: 00000000000000ca RAX: fffffffffffffe00 RBX: 000000000072bf08 RCX: 0000000000457579 RDX: 0000000000000000 RSI: 0000000000000080 RDI: 000000000072bf08 RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 000000000072bf0c R13: 00007ffd2f9f9c0f R14: 00007f8447dce9c0 R15: 0000000000000000 INFO: task syz-executor0:10329 blocked for more than 140 seconds. Not tainted 4.14.74+ #17 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. syz-executor0 D28424 10329 1856 0x00000004 Call Trace: schedule+0x7f/0x1b0 kernel/sched/core.c:3490 __rwsem_down_write_failed_common kernel/locking/rwsem-xadd.c:565 [inline] rwsem_down_write_failed+0x390/0x730 kernel/locking/rwsem-xadd.c:594 call_rwsem_down_write_failed+0x13/0x20 arch/x86/lib/rwsem.S:105 __down_write arch/x86/include/asm/rwsem.h:126 [inline] down_write+0x4f/0x90 kernel/locking/rwsem.c:56 mpage_map_and_submit_extent fs/ext4/inode.c:2569 [inline] ext4_writepages+0x19a9/0x3040 fs/ext4/inode.c:2885 do_writepages+0xe0/0x270 mm/page-writeback.c:2341 __filemap_fdatawrite_range+0x19e/0x270 mm/filemap.c:345 ext4_alloc_da_blocks+0xd4/0x330 fs/ext4/inode.c:3266 ext4_release_file+0x1f3/0x2d0 fs/ext4/file.c:86 __fput+0x25e/0x6f0 fs/file_table.c:210 task_work_run+0x116/0x190 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:191 [inline] exit_to_usermode_loop+0x12e/0x150 arch/x86/entry/common.c:163 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:267 [inline] do_syscall_64+0x35d/0x4b0 arch/x86/entry/common.c:294 entry_SYSCALL_64_after_hwframe+0x42/0xb7 RIP: 0033:0x411051 RSP: 002b:00007ffd2f9f9e20 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 RAX: 0000000000000000 RBX: 0000000000000005 RCX: 0000000000411051 RDX: 0000000000000000 RSI: 0000000000730ea0 RDI: 0000000000000004 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 00007ffd2f9f9d50 R11: 0000000000000293 R12: 0000000000000000 R13: 0000000000000001 R14: 00000000000000b5 R15: 0000000000000000 Showing all locks held in the system: 2 locks held by init/1: #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 #1: (&sb->s_type->i_mutex_key#9){++++}, at: [] inode_trylock include/linux/fs.h:733 [inline] #1: (&sb->s_type->i_mutex_key#9){++++}, at: [] ext4_file_write_iter+0x1b9/0xe20 fs/ext4/file.c:230 1 lock held by khungtaskd/23: #0: (tasklist_lock){.+.+}, at: [] debug_show_all_locks+0x74/0x20f kernel/locking/lockdep.c:4541 4 locks held by kworker/u4:2/374: #0: ("writeback"){+.+.}, at: [] process_one_work+0x787/0x15c0 kernel/workqueue.c:2085 #1: ((&(&wb->dwork)->work)){+.+.}, at: [] process_one_work+0x7bf/0x15c0 kernel/workqueue.c:2089 #2: (&type->s_umount_key#34){++++}, at: [] trylock_super+0x1a/0xe0 fs/super.c:402 #3: (&sbi->s_journal_flag_rwsem){++++}, at: [] do_writepages+0xe0/0x270 mm/page-writeback.c:2341 3 locks held by rs:main Q:Reg/1639: #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: (&sb->s_type->i_mutex_key#9){++++}, at: [] inode_trylock include/linux/fs.h:733 [inline] #2: (&sb->s_type->i_mutex_key#9){++++}, at: [] ext4_file_write_iter+0x1b9/0xe20 fs/ext4/file.c:230 2 locks held by getty/1769: #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 2 locks held by syz-executor0/6225: #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [] inode_lock include/linux/fs.h:713 [inline] #0: (&sb->s_type->i_mutex_key#8){+.+.}, at: [] __sock_release+0x84/0x250 net/socket.c:601 #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 syz-executor0/7250: #0: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #0: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 1 lock held by syz-executor0/7820: #0: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #0: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 1 lock held by syz-executor0/8190: #0: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #0: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 1 lock held by syz-executor0/8242: #0: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #0: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 1 lock held by syz-executor0/9425: #0: (sb_internal){.+.+}, at: [] sb_start_intwrite include/linux/fs.h:1590 [inline] #0: (sb_internal){.+.+}, at: [] ext4_evict_inode+0x367/0x1520 fs/ext4/inode.c:250 3 locks held by syz-executor0/10329: #0: (&sbi->s_journal_flag_rwsem){++++}, at: [] do_writepages+0xe0/0x270 mm/page-writeback.c:2341 #1: (jbd2_handle){++++}, at: [] start_this_handle+0x45d/0xfc0 fs/jbd2/transaction.c:388 #2: (&ei->i_data_sem){++++}, at: [] mpage_map_and_submit_extent fs/ext4/inode.c:2569 [inline] #2: (&ei->i_data_sem){++++}, at: [] ext4_writepages+0x19a9/0x3040 fs/ext4/inode.c:2885 ============================================= NMI backtrace for cpu 1 CPU: 1 PID: 23 Comm: khungtaskd Not tainted 4.14.74+ #17 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 skipped: idling at pc 0xffffffffb90552f2