> Il giorno 05 apr 2018, alle ore 15:15, Sami Farin <hvtaifwkbgefbaei@xxxxxxxxx> ha scritto: > > I was using chacharand to fill 32 GB SD card (VFAT fs) (maybe 30 MiB/s) > with random data, it froze halfway. There was 400 MiB Dirty data. > After reboot the filling operation went OK when I used kyber scheduler. > System is Fedora 27 on Core i5 2500K / 16 GiB. > I'm afraid this crash is caused by a bug fixed for 4.16 [1]. In the same thread [1], Oleksander (in CC) proposed to backport this and other fixes and improvements to 4.15. But Jens (in CC) didn't accept, because too general stuff was included in the batch. Maybe this bug report could be the opportunity to reconsider that backport or part of it? Thanks, Paolo [1] https://lkml.org/lkml/2018/2/7/678 > sysrq: SysRq : Show Blocked State > task PC stack pid father > device poll D 0 2811838 1 0x00000000 > Call Trace: > ? __schedule+0x2c2/0x910 > schedule+0x2a/0x80 > schedule_timeout+0x8a/0x490 > ? collect_expired_timers+0xa0/0xa0 > msleep+0x24/0x30 > usb_port_suspend+0x298/0x430 [usbcore] > usb_suspend_both+0x17d/0x200 [usbcore] > ? usb_probe_interface+0x300/0x300 [usbcore] > usb_runtime_suspend+0x25/0x60 [usbcore] > __rpm_callback+0xb7/0x1f0 > ? usb_probe_interface+0x300/0x300 [usbcore] > rpm_callback+0x1a/0x80 > ? usb_probe_interface+0x300/0x300 [usbcore] > rpm_suspend+0x11e/0x660 > __pm_runtime_suspend+0x36/0x60 > usbdev_release+0xb3/0x120 [usbcore] > __fput+0xa3/0x1f0 > task_work_run+0x82/0xa0 > exit_to_usermode_loop+0x91/0xa0 > do_syscall_64+0xe7/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7f41101c170c > RSP: 002b:00007f410e655b80 EFLAGS: 00000293 ORIG_RAX: 0000000000000003 > RAX: 0000000000000000 RBX: 00007f410e655ecb RCX: 00007f41101c170c > RDX: 0000000000000000 RSI: 00007f410e655ea0 RDI: 0000000000000007 > RBP: 00007f410e655ec4 R08: 0000000000000000 R09: 00007f4100000080 > R10: 0000000000000000 R11: 0000000000000293 R12: 00007f410e655c90 > R13: 00007f410e655ecb R14: 0000000000000007 R15: 00007f410e655ebb > kworker/u8:4 D 0 2978647 2 0x80000000 > Workqueue: writeback wb_workfn (flush-8:80) > Call Trace: > ? __schedule+0x2c2/0x910 > schedule+0x2a/0x80 > io_schedule+0xd/0x30 > blk_mq_get_tag+0x150/0x250 > ? wait_woken+0x80/0x80 > blk_mq_get_request+0x131/0x450 > ? bfq_bio_merge+0xcb/0x100 > blk_mq_make_request+0x118/0x6e0 > ? blk_queue_enter+0x31/0x2f0 > generic_make_request+0xfd/0x2a0 > ? submit_bio+0x67/0x140 > submit_bio+0x67/0x140 > ? guard_bio_eod+0x78/0x150 > mpage_writepages+0xa7/0xe0 > ? fat_add_cluster+0x60/0x60 [fat] > ? do_writepages+0x37/0xc0 > ? fat_writepage+0x10/0x10 [fat] > do_writepages+0x37/0xc0 > ? reacquire_held_locks+0x8f/0x150 > ? writeback_sb_inodes+0xef/0x490 > ? __writeback_single_inode+0x5a/0x530 > __writeback_single_inode+0x5a/0x530 > writeback_sb_inodes+0x1ed/0x490 > __writeback_inodes_wb+0x55/0xa0 > wb_writeback+0x261/0x3f0 > ? wb_workfn+0x1fd/0x4f0 > wb_workfn+0x1fd/0x4f0 > process_one_work+0x206/0x560 > worker_thread+0x2c/0x380 > ? process_one_work+0x560/0x560 > kthread+0x10e/0x130 > ? kthread_create_on_node+0x40/0x40 > ret_from_fork+0x35/0x40 > kworker/0:3 D 0 2979285 2 0x80000000 > Workqueue: events_freezable_power_ disk_events_workfn > Call Trace: > ? __schedule+0x2c2/0x910 > schedule+0x2a/0x80 > io_schedule+0xd/0x30 > blk_mq_get_tag+0x150/0x250 > ? wait_woken+0x80/0x80 > blk_mq_get_request+0x131/0x450 > blk_mq_alloc_request+0x58/0xb0 > blk_get_request_flags+0x3b/0x150 > scsi_execute+0x33/0x250 > scsi_test_unit_ready+0x48/0xb0 > sd_check_events+0xc8/0x170 > disk_check_events+0x54/0x130 > process_one_work+0x206/0x560 > worker_thread+0x2c/0x380 > ? process_one_work+0x560/0x560 > kthread+0x10e/0x130 > ? kthread_create_on_node+0x40/0x40 > ? SyS_exit+0xe/0x10 > ret_from_fork+0x35/0x40 > chacharand D 0 2980742 2978974 0x80000002 > Call Trace: > ? __schedule+0x2c2/0x910 > schedule+0x2a/0x80 > io_schedule+0xd/0x30 > blk_mq_get_tag+0x150/0x250 > ? wait_woken+0x80/0x80 > blk_mq_get_request+0x131/0x450 > ? bfq_bio_merge+0xcb/0x100 > blk_mq_make_request+0x118/0x6e0 > ? blk_queue_enter+0x31/0x2f0 > generic_make_request+0xfd/0x2a0 > ? submit_bio+0x67/0x140 > submit_bio+0x67/0x140 > ? guard_bio_eod+0x78/0x150 > __mpage_writepage+0x67e/0x7a0 > ? clear_page_dirty_for_io+0x10f/0x240 > ? clear_page_dirty_for_io+0x12f/0x240 > write_cache_pages+0x1ee/0x460 > ? clean_buffers+0x60/0x60 > ? fat_add_cluster+0x60/0x60 [fat] > mpage_writepages+0x68/0xe0 > ? fat_add_cluster+0x60/0x60 [fat] > ? do_writepages+0x37/0xc0 > ? fat_writepage+0x10/0x10 [fat] > do_writepages+0x37/0xc0 > ? __filemap_fdatawrite_range+0x99/0xe0 > ? __filemap_fdatawrite_range+0xa6/0xe0 > __filemap_fdatawrite_range+0xa6/0xe0 > ? sync_inode_metadata+0x2a/0x30 > fat_flush_inodes+0x25/0x60 [fat] > fat_file_release+0x2a/0x40 [fat] > __fput+0xa3/0x1f0 > task_work_run+0x82/0xa0 > do_exit+0x29b/0xbf0 > do_group_exit+0x34/0xb0 > SyS_exit_group+0xb/0x10 > do_syscall_64+0x62/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7fd9172b3178 > RSP: 002b:00007fffe01eb248 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 > RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fd9172b3178 > RDX: 0000000000000000 RSI: 000000000000003c RDI: 0000000000000000 > RBP: 00007fd9175b08b8 R08: 00000000000000e7 R09: ffffffffffffff80 > R10: 00007fffe01eb1d0 R11: 0000000000000246 R12: 00007fd9175b08b8 > R13: 00007fd9175b5d60 R14: 0000000000000000 R15: 0000000000000000 > (ostnamed) D 0 2981753 1 0x00000004 > Call Trace: > ? __schedule+0x2c2/0x910 > ? rwsem_down_write_failed+0x174/0x260 > schedule+0x2a/0x80 > rwsem_down_write_failed+0x179/0x260 > ? call_rwsem_down_write_failed+0x13/0x20 > call_rwsem_down_write_failed+0x13/0x20 > down_write+0x3b/0x50 > ? do_mount+0x434/0xdb0 > do_mount+0x434/0xdb0 > ? SyS_statfs+0x1f/0x30 > SyS_mount+0x50/0xd0 > do_syscall_64+0x62/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7f46fb97259a > RSP: 002b:00007fff765583a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f46fb97259a > RDX: 0000000000000000 RSI: 0000556304add3e0 RDI: 0000000000000000 > RBP: 00007fff76558e00 R08: 0000000000000000 R09: 0000000000000070 > R10: 0000000000001027 R11: 0000000000000206 R12: 0000556304ae8a30 > R13: 0000556304add3e0 R14: 0000556304a4fb40 R15: 0000000000000015 > (ostnamed) D 0 2983102 1 0x00000004 > Call Trace: > ? __schedule+0x2c2/0x910 > ? rwsem_down_write_failed+0x174/0x260 > schedule+0x2a/0x80 > rwsem_down_write_failed+0x179/0x260 > ? call_rwsem_down_write_failed+0x13/0x20 > call_rwsem_down_write_failed+0x13/0x20 > down_write+0x3b/0x50 > ? do_mount+0x434/0xdb0 > do_mount+0x434/0xdb0 > ? SyS_statfs+0x1f/0x30 > SyS_mount+0x50/0xd0 > do_syscall_64+0x62/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7f46fb97259a > RSP: 002b:00007fff765583a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f46fb97259a > RDX: 0000000000000000 RSI: 00005563049ef570 RDI: 0000000000000000 > RBP: 00007fff76558e00 R08: 0000000000000000 R09: 00000000000000e0 > R10: 0000000000001027 R11: 0000000000000206 R12: 0000556304ae7700 > R13: 00005563049ef570 R14: 0000556304a4fb40 R15: 0000000000000015 > (ostnamed) D 0 2984561 1 0x00000004 > Call Trace: > ? __schedule+0x2c2/0x910 > ? rwsem_down_write_failed+0x174/0x260 > schedule+0x2a/0x80 > rwsem_down_write_failed+0x179/0x260 > ? call_rwsem_down_write_failed+0x13/0x20 > call_rwsem_down_write_failed+0x13/0x20 > down_write+0x3b/0x50 > ? do_mount+0x434/0xdb0 > do_mount+0x434/0xdb0 > ? SyS_statfs+0x1f/0x30 > SyS_mount+0x50/0xd0 > do_syscall_64+0x62/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7f46fb97259a > RSP: 002b:00007fff765583a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f46fb97259a > RDX: 0000000000000000 RSI: 0000556304addb10 RDI: 0000000000000000 > RBP: 00007fff76558e00 R08: 0000000000000000 R09: 00000000000001c0 > R10: 0000000000001027 R11: 0000000000000206 R12: 0000556304addd10 > R13: 0000556304addb10 R14: 0000556304a4fb40 R15: 0000000000000015 > (ostnamed) D 0 2986247 1 0x00000004 > Call Trace: > ? __schedule+0x2c2/0x910 > ? rwsem_down_write_failed+0x174/0x260 > schedule+0x2a/0x80 > rwsem_down_write_failed+0x179/0x260 > ? call_rwsem_down_write_failed+0x13/0x20 > call_rwsem_down_write_failed+0x13/0x20 > down_write+0x3b/0x50 > ? do_mount+0x434/0xdb0 > do_mount+0x434/0xdb0 > ? SyS_statfs+0x1f/0x30 > SyS_mount+0x50/0xd0 > do_syscall_64+0x62/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7f46fb97259a > RSP: 002b:00007fff765583a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f46fb97259a > RDX: 0000000000000000 RSI: 0000556304ae0670 RDI: 0000000000000000 > RBP: 00007fff76558e00 R08: 0000000000000000 R09: 00000000000001c0 > R10: 0000000000001027 R11: 0000000000000206 R12: 0000556304ae7700 > R13: 0000556304ae0670 R14: 0000556304a4fb40 R15: 0000000000000015 > (ostnamed) D 0 2987631 1 0x00000000 > Call Trace: > ? __schedule+0x2c2/0x910 > ? rwsem_down_write_failed+0x174/0x260 > schedule+0x2a/0x80 > rwsem_down_write_failed+0x179/0x260 > ? call_rwsem_down_write_failed+0x13/0x20 > call_rwsem_down_write_failed+0x13/0x20 > down_write+0x3b/0x50 > ? do_mount+0x434/0xdb0 > do_mount+0x434/0xdb0 > ? SyS_statfs+0x1f/0x30 > SyS_mount+0x50/0xd0 > do_syscall_64+0x62/0x100 > entry_SYSCALL_64_after_hwframe+0x3d/0xa2 > RIP: 0033:0x7f46fb97259a > RSP: 002b:00007fff765583a8 EFLAGS: 00000206 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 0000000000000001 RCX: 00007f46fb97259a > RDX: 0000000000000000 RSI: 0000556304b92bc0 RDI: 0000000000000000 > RBP: 00007fff76558e00 R08: 0000000000000000 R09: 00000000000000e0 > R10: 0000000000001027 R11: 0000000000000206 R12: 0000556304a12370 > R13: 0000556304b92bc0 R14: 0000556304a4fb40 R15: 0000000000000015 > systemd[1]: systemd-hostnamed.service: Start operation timed out. Terminating. > > -- > Do what you love because life is too short for anything else. >
