* kirkwood / openrd: umount problem using mdev (busybox)
@ 2009-11-06 14:59 Dieter Kiermaier
2009-11-11 14:55 ` Dieter Kiermaier
0 siblings, 1 reply; 4+ messages in thread
From: Dieter Kiermaier @ 2009-11-06 14:59 UTC (permalink / raw)
To: linux-arm-kernel
Hi all,
I've encountered a new problem with regards to busybox mdev while umounting a usb pendrive:
I'm using kernel
sh-3.2# uname -a
Linux DB88FXX81 2.6.32-rc4 #2 PREEMPT Thu Nov 5 13:41:41 CET 2009 armv5tel GNU/Linux
sh-3.2#
Mounting and umounting manually works like a charm without any problems. But if I disconnected a
mounted pendrive and wants mdev to umount it on a remove event the umount call hangs until I get a
message from my kernel (see below).
A strace of the umount call gives:
execve("/bin/umount", ["umount", "-f", "-l", "/dev/sda1"], [/* 14 vars */]) = 0
brk(0) = 0xf5000
uname({sys="Linux", node="DB88FXX81", ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001d000
access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/lib/tls/v5l/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v5l/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/v5l/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v5l/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/v5l/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v5l/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/v5l/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/v5l", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/tls/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/tls", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/v5l/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/v5l/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/v5l/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/v5l/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/v5l/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/v5l/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/v5l/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/v5l", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/lib/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
open("/lib/libm.so.6", O_RDONLY) = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\0342\0\0004\0\0\0"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0755, st_size=693352, ...}) = 0
mmap2(NULL, 712856, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x40026000
mprotect(0x400cc000, 28672, PROT_NONE) = 0
mmap2(0x400d3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xa5) = 0x400d3000
close(4) = 0
open("/lib/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/v5l/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/v5l/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/v5l/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/v5l/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/v5l/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/v5l/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/v5l/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/v5l", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/tls/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/tls", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/v5l/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/v5l/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/v5l/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/v5l/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/v5l/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/v5l/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/v5l/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/v5l", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
stat64("/usr/lib/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
open("/usr/lib/libgcc_s.so.1", O_RDONLY) = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\304\"\0\0004\0\0\0"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0644, st_size=65824, ...}) = 0
mmap2(NULL, 78540, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x400d5000
mprotect(0x400e1000, 28672, PROT_NONE) = 0
mmap2(0x400e8000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xb) = 0x400e8000
close(4) = 0
open("/lib/libc.so.6", O_RDONLY) = 4
read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\340J\1\0004\0\0\0"..., 512) = 512
fstat64(4, {st_mode=S_IFREG|0755, st_size=1249460, ...}) = 0
mmap2(NULL, 1237404, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x400e9000
mprotect(0x4020b000, 28672, PROT_NONE) = 0
mmap2(0x40212000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x121) = 0x40212000
mmap2(0x40215000, 8604, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40215000
close(4) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001e000
set_tls(0x4001e720, 0x400256f4, 0x4001edf8, 0x40025058, 0x40) = 0
mprotect(0x40212000, 8192, PROT_READ) = 0
mprotect(0x400d3000, 4096, PROT_READ) = 0
getpid() = 562
getuid32() = 0
brk(0) = 0xf5000
brk(0x117000) = 0x117000
open("/proc/mounts", O_RDONLY) = 4
fstat64(4, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001f000
read(4, "rootfs / rootfs rw 0 0\n/dev/root"..., 1024) = 655
read(4, "", 1024) = 0
close(4) = 0
munmap(0x4001f000, 4096) = 0
lstat64("/dev", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=2880, ...}) = 0
lstat64("/dev/sda1", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 1), ...}) = 0
umount("/mnt/usbdisk", 0
And after that the process hangs:
sh-3.2# ps
PID USER VSZ STAT COMMAND
1 root 3256 S init
2 root 0 SW [kthreadd]
3 root 0 SW [ksoftirqd/0]
4 root 0 SW [watchdog/0]
5 root 0 SW [events/0]
6 root 0 SW [khelper]
9 root 0 SW [async/mgr]
133 root 0 SW [sync_supers]
135 root 0 SW [bdi-default]
137 root 0 SW [kblockd/0]
143 root 0 SW [ata/0]
144 root 0 SW [ata_aux]
152 root 0 SW [khubd]
155 root 0 SW [kseriod]
158 root 0 SW [kmmcd]
178 root 0 SW [rpciod/0]
186 root 0 SW [khungtaskd]
187 root 0 SW [kswapd0]
236 root 0 SW [aio/0]
244 root 0 SW [nfsiod]
250 root 0 SW [crypto/0]
387 root 0 SW [scsi_eh_0]
390 root 0 SW [scsi_eh_1]
397 root 0 SW [mtdblockd]
411 root 0 SW [orion_spi]
494 root 0 SW [usbhid_resumer]
515 root 2280 S /bin/sh /sbin/mini_httpd_wrapper
516 root 2644 S -/bin/sh
519 root 2176 S /sbin/mini_httpd -D -d /var/www -u root -c **.cgi -i
527 root 0 SW [scsi_eh_2]
550 root 3264 S /sbin/mdev block
554 root 2604 S /bin/sh /sbin/mdev_mount_usbdisk.sh
561 root 1836 S strace umount -f -l /dev/sda1
562 root 3260 D umount -f -l /dev/sda1
564 root 3260 R ps
sh-3.2#
After a while I get this from my kernel every now and then:
sh-3.2# INFO: task umount:562 blocked for more than 120 seconds.
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
umount D c03467c0 0 562 561 0x00000100
[<c03467c0>] (schedule+0x360/0x3f0) from [<c00d18f0>] (bdi_sched_wait+0xc/0x18)
[<c00d18f0>] (bdi_sched_wait+0xc/0x18) from [<c03472e4>] (__wait_on_bit+0x60/0xac)
[<c03472e4>] (__wait_on_bit+0x60/0xac) from [<c03473a4>] (out_of_line_wait_on_bit+0x74/0x80)
[<c03473a4>] (out_of_line_wait_on_bit+0x74/0x80) from [<c00d1984>] (sync_inodes_sb+0x88/0x17c)
[<c00d1984>] (sync_inodes_sb+0x88/0x17c) from [<c00d5c38>] (__sync_filesystem+0x30/0x6c)
[<c00d5c38>] (__sync_filesystem+0x30/0x6c) from [<c00b6248>] (generic_shutdown_super+0x2c/0x130)
[<c00b6248>] (generic_shutdown_super+0x2c/0x130) from [<c00b6368>] (kill_block_super+0x1c/0x38)
[<c00b6368>] (kill_block_super+0x1c/0x38) from [<c00b66c0>] (deactivate_super+0x68/0x8c)
[<c00b66c0>] (deactivate_super+0x68/0x8c) from [<c00cd734>] (sys_umount+0x2c8/0x2fc)
[<c00cd734>] (sys_umount+0x2c8/0x2fc) from [<c0026b1c>] (__sys_trace_return+0x0/0x24)
Any help would be welcome!
Many thanks,
Dieter
^ permalink raw reply [flat|nested] 4+ messages in thread
* kirkwood / openrd: umount problem using mdev (busybox)
2009-11-06 14:59 kirkwood / openrd: umount problem using mdev (busybox) Dieter Kiermaier
@ 2009-11-11 14:55 ` Dieter Kiermaier
2009-11-11 16:11 ` Nicolas Pitre
0 siblings, 1 reply; 4+ messages in thread
From: Dieter Kiermaier @ 2009-11-11 14:55 UTC (permalink / raw)
To: linux-arm-kernel
Hi again,
> Hi all,
>
> I've encountered a new problem with regards to busybox mdev while umounting a usb pendrive:
> I'm using kernel
> sh-3.2# uname -a
> Linux DB88FXX81 2.6.32-rc4 #2 PREEMPT Thu Nov 5 13:41:41 CET 2009 armv5tel GNU/Linux
> sh-3.2#
>
>
> Mounting and umounting manually works like a charm without any problems. But if I disconnected a
> mounted pendrive and wants mdev to umount it on a remove event the umount call hangs until I get a
> message from my kernel (see below).
>
This problem also doesn't exist with marvell stock 2.6.22.18 kernel.
So I would assume it is no busybox problem.
It looks like another kernel problem with current mainline kernel?
mounting / umounting with busybox mdev works reliable and as expected.
Dieter
>
>
> A strace of the umount call gives:
> execve("/bin/umount", ["umount", "-f", "-l", "/dev/sda1"], [/* 14 vars */]) = 0
> brk(0) = 0xf5000
> uname({sys="Linux", node="DB88FXX81", ...}) = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001d000
> access("/etc/ld.so.preload", R_OK) = -1 ENOENT (No such file or directory)
> open("/etc/ld.so.cache", O_RDONLY) = -1 ENOENT (No such file or directory)
> open("/lib/tls/v5l/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/v5l/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/v5l/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/v5l/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/v5l/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/v5l/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/v5l/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/v5l", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/tls/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/tls", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/v5l/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/v5l/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/v5l/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/v5l/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/v5l/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/v5l/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/v5l/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/v5l", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/fast-mult/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/fast-mult/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/fast-mult/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/fast-mult", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/half/libm.so.6", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/lib/half", 0xbed722f8) = -1 ENOENT (No such file or directory)
> open("/lib/libm.so.6", O_RDONLY) = 4
> read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\0342\0\0004\0\0\0"..., 512) = 512
> fstat64(4, {st_mode=S_IFREG|0755, st_size=693352, ...}) = 0
> mmap2(NULL, 712856, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x40026000
> mprotect(0x400cc000, 28672, PROT_NONE) = 0
> mmap2(0x400d3000, 8192, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xa5) = 0x400d3000
> close(4) = 0
> open("/lib/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/v5l/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/v5l/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/v5l/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/v5l/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/v5l/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/v5l/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/v5l/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/v5l", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/tls/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/tls", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/v5l/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/v5l/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/v5l/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/v5l/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/v5l/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/v5l/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/v5l/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/v5l", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/fast-mult/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/fast-mult/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/fast-mult/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/fast-mult", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/half/libgcc_s.so.1", O_RDONLY) = -1 ENOENT (No such file or directory)
> stat64("/usr/lib/half", 0xbed722e0) = -1 ENOENT (No such file or directory)
> open("/usr/lib/libgcc_s.so.1", O_RDONLY) = 4
> read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\304\"\0\0004\0\0\0"..., 512) = 512
> fstat64(4, {st_mode=S_IFREG|0644, st_size=65824, ...}) = 0
> mmap2(NULL, 78540, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x400d5000
> mprotect(0x400e1000, 28672, PROT_NONE) = 0
> mmap2(0x400e8000, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0xb) = 0x400e8000
> close(4) = 0
> open("/lib/libc.so.6", O_RDONLY) = 4
> read(4, "\177ELF\1\1\1\0\0\0\0\0\0\0\0\0\3\0(\0\1\0\0\0\340J\1\0004\0\0\0"..., 512) = 512
> fstat64(4, {st_mode=S_IFREG|0755, st_size=1249460, ...}) = 0
> mmap2(NULL, 1237404, PROT_READ|PROT_EXEC, MAP_PRIVATE|MAP_DENYWRITE, 4, 0) = 0x400e9000
> mprotect(0x4020b000, 28672, PROT_NONE) = 0
> mmap2(0x40212000, 12288, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 4, 0x121) = 0x40212000
> mmap2(0x40215000, 8604, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x40215000
> close(4) = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001e000
> set_tls(0x4001e720, 0x400256f4, 0x4001edf8, 0x40025058, 0x40) = 0
> mprotect(0x40212000, 8192, PROT_READ) = 0
> mprotect(0x400d3000, 4096, PROT_READ) = 0
> getpid() = 562
> getuid32() = 0
> brk(0) = 0xf5000
> brk(0x117000) = 0x117000
> open("/proc/mounts", O_RDONLY) = 4
> fstat64(4, {st_mode=S_IFREG|0444, st_size=0, ...}) = 0
> mmap2(NULL, 4096, PROT_READ|PROT_WRITE, MAP_PRIVATE|MAP_ANONYMOUS, -1, 0) = 0x4001f000
> read(4, "rootfs / rootfs rw 0 0\n/dev/root"..., 1024) = 655
> read(4, "", 1024) = 0
> close(4) = 0
> munmap(0x4001f000, 4096) = 0
> lstat64("/dev", {st_mode=S_IFDIR|S_ISVTX|0777, st_size=2880, ...}) = 0
> lstat64("/dev/sda1", {st_mode=S_IFBLK|0660, st_rdev=makedev(8, 1), ...}) = 0
> umount("/mnt/usbdisk", 0
>
> And after that the process hangs:
>
> sh-3.2# ps
> PID USER VSZ STAT COMMAND
> 1 root 3256 S init
> 2 root 0 SW [kthreadd]
> 3 root 0 SW [ksoftirqd/0]
> 4 root 0 SW [watchdog/0]
> 5 root 0 SW [events/0]
> 6 root 0 SW [khelper]
> 9 root 0 SW [async/mgr]
> 133 root 0 SW [sync_supers]
> 135 root 0 SW [bdi-default]
> 137 root 0 SW [kblockd/0]
> 143 root 0 SW [ata/0]
> 144 root 0 SW [ata_aux]
> 152 root 0 SW [khubd]
> 155 root 0 SW [kseriod]
> 158 root 0 SW [kmmcd]
> 178 root 0 SW [rpciod/0]
> 186 root 0 SW [khungtaskd]
> 187 root 0 SW [kswapd0]
> 236 root 0 SW [aio/0]
> 244 root 0 SW [nfsiod]
> 250 root 0 SW [crypto/0]
> 387 root 0 SW [scsi_eh_0]
> 390 root 0 SW [scsi_eh_1]
> 397 root 0 SW [mtdblockd]
> 411 root 0 SW [orion_spi]
> 494 root 0 SW [usbhid_resumer]
> 515 root 2280 S /bin/sh /sbin/mini_httpd_wrapper
> 516 root 2644 S -/bin/sh
> 519 root 2176 S /sbin/mini_httpd -D -d /var/www -u root -c **.cgi -i
> 527 root 0 SW [scsi_eh_2]
> 550 root 3264 S /sbin/mdev block
> 554 root 2604 S /bin/sh /sbin/mdev_mount_usbdisk.sh
> 561 root 1836 S strace umount -f -l /dev/sda1
> 562 root 3260 D umount -f -l /dev/sda1
> 564 root 3260 R ps
> sh-3.2#
>
> After a while I get this from my kernel every now and then:
>
> sh-3.2# INFO: task umount:562 blocked for more than 120 seconds.
> "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
> umount D c03467c0 0 562 561 0x00000100
> [<c03467c0>] (schedule+0x360/0x3f0) from [<c00d18f0>] (bdi_sched_wait+0xc/0x18)
> [<c00d18f0>] (bdi_sched_wait+0xc/0x18) from [<c03472e4>] (__wait_on_bit+0x60/0xac)
> [<c03472e4>] (__wait_on_bit+0x60/0xac) from [<c03473a4>] (out_of_line_wait_on_bit+0x74/0x80)
> [<c03473a4>] (out_of_line_wait_on_bit+0x74/0x80) from [<c00d1984>] (sync_inodes_sb+0x88/0x17c)
> [<c00d1984>] (sync_inodes_sb+0x88/0x17c) from [<c00d5c38>] (__sync_filesystem+0x30/0x6c)
> [<c00d5c38>] (__sync_filesystem+0x30/0x6c) from [<c00b6248>] (generic_shutdown_super+0x2c/0x130)
> [<c00b6248>] (generic_shutdown_super+0x2c/0x130) from [<c00b6368>] (kill_block_super+0x1c/0x38)
> [<c00b6368>] (kill_block_super+0x1c/0x38) from [<c00b66c0>] (deactivate_super+0x68/0x8c)
> [<c00b66c0>] (deactivate_super+0x68/0x8c) from [<c00cd734>] (sys_umount+0x2c8/0x2fc)
> [<c00cd734>] (sys_umount+0x2c8/0x2fc) from [<c0026b1c>] (__sys_trace_return+0x0/0x24)
>
> Any help would be welcome!
>
> Many thanks,
> Dieter
>
>
>
>
> _______________________________________________
> linux-arm-kernel mailing list
> linux-arm-kernel at lists.infradead.org
> http://lists.infradead.org/mailman/listinfo/linux-arm-kernel
>
^ permalink raw reply [flat|nested] 4+ messages in thread
* kirkwood / openrd: umount problem using mdev (busybox)
2009-11-11 14:55 ` Dieter Kiermaier
@ 2009-11-11 16:11 ` Nicolas Pitre
2009-11-11 16:27 ` Dieter Kiermaier
0 siblings, 1 reply; 4+ messages in thread
From: Nicolas Pitre @ 2009-11-11 16:11 UTC (permalink / raw)
To: linux-arm-kernel
On Wed, 11 Nov 2009, Dieter Kiermaier wrote:
> Hi again,
>
> > Hi all,
> >
> > I've encountered a new problem with regards to busybox mdev while umounting a usb pendrive:
> > I'm using kernel
> > sh-3.2# uname -a
> > Linux DB88FXX81 2.6.32-rc4 #2 PREEMPT Thu Nov 5 13:41:41 CET 2009 armv5tel GNU/Linux
> > sh-3.2#
> >
> >
> > Mounting and umounting manually works like a charm without any problems. But if I disconnected a
> > mounted pendrive and wants mdev to umount it on a remove event the umount call hangs until I get a
> > message from my kernel (see below).
> >
>
> This problem also doesn't exist with marvell stock 2.6.22.18 kernel.
> So I would assume it is no busybox problem.
> It looks like another kernel problem with current mainline kernel?
Maybe you have misconfigured one feature in your build of the mainline
kernel compared to the 2.6.22 version?
In any case, given that manually mounting/unmounting does work, this
suggests the issue hardly can be in the USB host driver. And everything
else from your kernel backtrace is generic code not specific to Kirkwood
or even ARM for that matter.
I'd suggest trying with the very latest kernel and repost your findings
(including kernel backtrace and all) to linux-kernel at vger.kernel.org and
CC Jens Axboe <axboe@kernel.dk> who is the block layer maintainer.
Nicolas
^ permalink raw reply [flat|nested] 4+ messages in thread
* kirkwood / openrd: umount problem using mdev (busybox)
2009-11-11 16:11 ` Nicolas Pitre
@ 2009-11-11 16:27 ` Dieter Kiermaier
0 siblings, 0 replies; 4+ messages in thread
From: Dieter Kiermaier @ 2009-11-11 16:27 UTC (permalink / raw)
To: linux-arm-kernel
Am Mittwoch 11 November 2009 17:11:37 schrieb Nicolas Pitre:
> On Wed, 11 Nov 2009, Dieter Kiermaier wrote:
>
> > Hi again,
> >
> > > Hi all,
> > >
> > > I've encountered a new problem with regards to busybox mdev while umounting a usb pendrive:
> > > I'm using kernel
> > > sh-3.2# uname -a
> > > Linux DB88FXX81 2.6.32-rc4 #2 PREEMPT Thu Nov 5 13:41:41 CET 2009 armv5tel GNU/Linux
> > > sh-3.2#
> > >
> > >
> > > Mounting and umounting manually works like a charm without any problems. But if I disconnected a
> > > mounted pendrive and wants mdev to umount it on a remove event the umount call hangs until I get a
> > > message from my kernel (see below).
> > >
> >
> > This problem also doesn't exist with marvell stock 2.6.22.18 kernel.
> > So I would assume it is no busybox problem.
> > It looks like another kernel problem with current mainline kernel?
>
> Maybe you have misconfigured one feature in your build of the mainline
> kernel compared to the 2.6.22 version?
>
> In any case, given that manually mounting/unmounting does work, this
> suggests the issue hardly can be in the USB host driver. And everything
> else from your kernel backtrace is generic code not specific to Kirkwood
> or even ARM for that matter.
>
> I'd suggest trying with the very latest kernel and repost your findings
> (including kernel backtrace and all) to linux-kernel at vger.kernel.org and
> CC Jens Axboe <axboe@kernel.dk> who is the block layer maintainer.
>
>
> Nicolas
>
Many thanks for suggesting - I will do that.
To post at linux-kernel at vger.kernel.org is it recommended to use vanilla kernel from kernel.org or is orion.git good as well?
Dieter
^ permalink raw reply [flat|nested] 4+ messages in thread
end of thread, other threads:[~2009-11-11 16:27 UTC | newest]
Thread overview: 4+ messages (download: mbox.gz follow: Atom feed
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2009-11-06 14:59 kirkwood / openrd: umount problem using mdev (busybox) Dieter Kiermaier
2009-11-11 14:55 ` Dieter Kiermaier
2009-11-11 16:11 ` Nicolas Pitre
2009-11-11 16:27 ` Dieter Kiermaier
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