Re: 2.4.1 segfault when doing "ls /dev/"
Pierfrancesco Caci wrote: > Yes I know this. Actually, booting with "devfs=nomount s" is the only > way to update the boot record with lilo and my existing lilo.conf. i can't do that on my box, /dev is only a mount point for devfs. assuming your /dev directory is dirty from something else than devfsd, could you try this while devfsd is running : #mkdir /devtest #mount none -t devfs /devtest #ls /devtest -- Pierre Rousselet <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing "ls /dev/"
:-> "Pierre" == Pierre Rousselet <[EMAIL PROTECTED]> writes: > /dev is mounted at boot time by the kernel (CONFIG_DEVFS_MOUNT=y). > The system boots and runs without devfsd. You just can't start any > process calling for non-existing device under /dev and not created > by devfsd. For instance pppd or mc won't start by lack of pseudo-tty > esd needs /dev/dsp ... Yes I know this. Actually, booting with "devfs=nomount s" is the only way to update the boot record with lilo and my existing lilo.conf. If I boot with devfs=nomount, I *can* ls /dev, without segfaulting. I don't want to access or use any device in /dev, I just want to stat /dev and see what's inside. There's something wrong with (I suspect) devfsd and the way it populates /dev with symlinks, whick make /dev un-listable but still usable, somewhat. > i was thinking the trouble may come from some programme launched by > your boot scripts before devfsd is running. I have no idea. Any other debian users reporting this ? > is your version of fileutils > 4.0.28 (ls --version) ? root@penny:/usr/src/linux # ls --version ls (fileutils) 4.0.37 Pf -- --- Pierfrancesco Caci | ik5pvx | mailto:[EMAIL PROTECTED] - http://gusp.dyndns.org Firenze - Italia | Office for the Complication of Otherwise Simple Affairs Linux penny 2.4.1 #1 Sat Feb 3 20:43:54 CET 2001 i686 unknown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing "ls /dev/"
Pierfrancesco Caci wrote: > I can't see how this can affect performance/funtionality of > devfsd. Can you try to stop the daemon and restart it to see if > continues to work as before ? /dev is mounted at boot time by the kernel (CONFIG_DEVFS_MOUNT=y). The system boots and runs without devfsd. You just can't start any process calling for non-existing device under /dev and not created by devfsd. For instance pppd or mc won't start by lack of pseudo-tty esd needs /dev/dsp ... i was thinking the trouble may come from some programme launched by your boot scripts before devfsd is running. is your version of fileutils > 4.0.28 (ls --version) ? -- Pierre Rousselet <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing "ls /dev/"
:-> "Pierre" == Pierre Rousselet <[EMAIL PROTECTED]> writes: > Pierfrancesco Caci wrote: >> 48 ?S 0:00 /sbin/devfsd /dev > on my box devfsd has pid 15, it comes just after the [kdaems] > and it works with 2.4.x I can't see how this can affect performance/funtionality of devfsd. Can you try to stop the daemon and restart it to see if continues to work as before ? Pf -- --- Pierfrancesco Caci | ik5pvx | mailto:[EMAIL PROTECTED] - http://gusp.dyndns.org Firenze - Italia | Office for the Complication of Otherwise Simple Affairs Linux penny 2.4.1 #1 Sat Feb 3 20:43:54 CET 2001 i686 unknown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing "ls /dev/"
Pierfrancesco Caci wrote: >48 ?S 0:00 /sbin/devfsd /dev on my box devfsd has pid 15, it comes just after the [kdaems] 1 ?S 0:04 init 2 ?SW 0:00 [keventd] 3 ?SW 0:00 [kapm-idled] 4 ?SW 0:00 [kswapd] 5 ?SW 0:00 [kreclaimd] 6 ?SW 0:00 [bdflush] 7 ?SW 0:00 [kupdate] 8 ?SW 0:00 [kreiserfsd] 15 ?S 0:00 devfsd /dev and it works with 2.4.x -- Pierre Rousselet <[EMAIL PROTECTED]> - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
2.4.1 segfault when doing "ls /dev/"
It happened with 2.4.0, it continues to happen with 2.4.1 too root@penny:~ # ps -ax|grep devfs 48 ?S 0:00 /sbin/devfsd /dev 6300 pts/0S 0:00 grep devfs root@penny:~ # cd /dev root@penny:/dev # ls Segmentation fault root@penny:/dev # ps -ax|grep devfs 6309 pts/0S 0:00 grep devfs root@penny:/dev # >From now on, I get a segfault whenever I try to see what's inside /dev but I can see what's _below_ /dev/, supposing I know where to look: root@penny:/dev # ls scsi host0 root@penny:/dev # ls tts 0 1 Here's the output of ksymoops: Feb 4 10:28:57 penny kernel: Unable to handle kernel NULL pointer dereference at virtual address Feb 4 10:28:57 penny kernel: c013b1c9 Feb 4 10:28:57 penny kernel: *pde = Feb 4 10:28:57 penny kernel: CPU:0 Feb 4 10:28:57 penny kernel: EIP:0010:[vfs_follow_link+33/348] Feb 4 10:28:57 penny kernel: EFLAGS: 00010217 Feb 4 10:28:57 penny kernel: eax: ebx: c7ae9fa4 ecx: 0735 edx: c0320a60 Feb 4 10:28:57 penny kernel: esi: edi: ebp: esp: c7ae9f10 Feb 4 10:28:57 penny kernel: ds: 0018 es: 0018 ss: 0018 Feb 4 10:28:57 penny kernel: Process devfsd (pid: 48, stackpage=c7ae9000) Feb 4 10:28:57 penny kernel: Stack: c7ae9fa4 c3aea960 c7ae9fa4 c015a703 c7ae9fa4 Feb 4 10:28:57 penny kernel:c7ae8000 c0138db9 c3aea960 c7ae9fa4 c69c87e0 c2e4e000 c7ae9fa4 Feb 4 10:28:57 penny kernel: 0001 c7ae9fa8 0009 c3aea960 c2e4e005 0004 Feb 4 10:28:57 penny kernel: Call Trace: [devfs_follow_link+31/36] [path_walk+1701/1964] [__user_walk+60/88] [sys_chown+22/72] [system_call+51/56] [startup_32+43/313] Feb 4 10:28:57 penny kernel: Code: 80 3f 2f 0f 85 c2 00 00 00 53 e8 b0 d2 ff ff ba 00 e0 ff ff Using defaults from ksymoops -t elf32-i386 -a i386 Code; Before first symbol <_EIP>: Code; Before first symbol 0: 80 3f 2f cmpb $0x2f,(%edi) Code; 0003 Before first symbol 3: 0f 85 c2 00 00 00 jnecb <_EIP+0xcb> 00cb Before first symbol Code; 0009 Before first symbol 9: 53push %ebx Code; 000a Before first symbol a: e8 b0 d2 ff ffcall d2bf <_EIP+0xd2bf> d2bf Code; 000f Before first symbol f: ba 00 e0 ff ffmov$0xe000,%edx Feb 4 10:28:57 penny kernel: Unable to handle kernel NULL pointer dereference at virtual address Feb 4 10:28:57 penny kernel: c013b1c9 Feb 4 10:28:57 penny kernel: *pde = Feb 4 10:28:57 penny kernel: Oops: Feb 4 10:28:57 penny kernel: CPU:0 Feb 4 10:28:57 penny kernel: EIP:0010:[vfs_follow_link+33/348] Feb 4 10:28:57 penny kernel: EFLAGS: 00010217 Feb 4 10:28:57 penny kernel: eax: ebx: c39b3fa4 ecx: 0735 edx: c0320a60 Feb 4 10:28:57 penny kernel: esi: c3aea0e0 edi: ebp: esp: c39b3f10 Feb 4 10:28:57 penny kernel: ds: 0018 es: 0018 ss: 0018 Feb 4 10:28:57 penny kernel: Process ls (pid: 6303, stackpage=c39b3000) Feb 4 10:28:57 penny kernel: Stack: c39b3fa4 c3aea0e0 c3aea0e0 c39b3fa4 c015a703 c39b3fa4 Feb 4 10:28:57 penny kernel:c39b2000 c0138db9 c3aea0e0 c39b3fa4 c69c87e0 c31c4000 c39b3fa4 Feb 4 10:28:57 penny kernel:0002 0001 0002 c01382ea 0009 c3aea0e0 c31c4000 0004 Feb 4 10:28:57 penny kernel: Call Trace: [devfs_follow_link+31/36] [path_walk+1701/1964] [getname+90/152] [__user_walk+60/88] [sys_stat64+22/120] [system_call+51/56] Feb 4 10:28:57 penny kernel: Code: 80 3f 2f 0f 85 c2 00 00 00 53 e8 b0 d2 ff ff ba 00 e0 ff ff Code; Before first symbol <_EIP>: Code; Before first symbol 0: 80 3f 2f cmpb $0x2f,(%edi) Code; 0003 Before first symbol 3: 0f 85 c2 00 00 00 jnecb <_EIP+0xcb> 00cb Before first symbol Code; 0009 Before first symbol 9: 53push %ebx Code; 000a Before first symbol a: e8 b0 d2 ff ffcall d2bf <_EIP+0xd2bf> d2bf Code; 000f Before first symbol f: ba 00 e0 ff ffmov$0xe000,%edx root@penny:/usr/src/linux/scripts # . ver_linux -- Versions installed: (if some fields are empty or look -- unusual then possibly you have very old versions) Linux penny 2.4.1 #1 Sat Feb 3 20:43:54 CET 2001 i686 unknown Kernel modules 2.4.1 Gnu C 2.95.3 Gnu Make 3.79.1 Binutils 2.10.1.0.2 Linux C Library2.2.1 Dynamic linker ldd (GNU libc) 2.2.1 Procps 2.0.7 Mount 2.10q Net-tools 2.05 Console-tools 0.2.3 Sh-utils 2.0.11 Modules Loaded rd sb sb_lib uart401 nfs mousedev hid input ipv6 nfsd lockd sunrpc
2.4.1 segfault when doing ls /dev/
It happened with 2.4.0, it continues to happen with 2.4.1 too root@penny:~ # ps -ax|grep devfs 48 ?S 0:00 /sbin/devfsd /dev 6300 pts/0S 0:00 grep devfs root@penny:~ # cd /dev root@penny:/dev # ls Segmentation fault root@penny:/dev # ps -ax|grep devfs 6309 pts/0S 0:00 grep devfs root@penny:/dev # From now on, I get a segfault whenever I try to see what's inside /dev but I can see what's _below_ /dev/, supposing I know where to look: root@penny:/dev # ls scsi host0 root@penny:/dev # ls tts 0 1 Here's the output of ksymoops: Feb 4 10:28:57 penny kernel: Unable to handle kernel NULL pointer dereference at virtual address Feb 4 10:28:57 penny kernel: c013b1c9 Feb 4 10:28:57 penny kernel: *pde = Feb 4 10:28:57 penny kernel: CPU:0 Feb 4 10:28:57 penny kernel: EIP:0010:[vfs_follow_link+33/348] Feb 4 10:28:57 penny kernel: EFLAGS: 00010217 Feb 4 10:28:57 penny kernel: eax: ebx: c7ae9fa4 ecx: 0735 edx: c0320a60 Feb 4 10:28:57 penny kernel: esi: edi: ebp: esp: c7ae9f10 Feb 4 10:28:57 penny kernel: ds: 0018 es: 0018 ss: 0018 Feb 4 10:28:57 penny kernel: Process devfsd (pid: 48, stackpage=c7ae9000) Feb 4 10:28:57 penny kernel: Stack: c7ae9fa4 c3aea960 c7ae9fa4 c015a703 c7ae9fa4 Feb 4 10:28:57 penny kernel:c7ae8000 c0138db9 c3aea960 c7ae9fa4 c69c87e0 c2e4e000 c7ae9fa4 Feb 4 10:28:57 penny kernel: 0001 c7ae9fa8 0009 c3aea960 c2e4e005 0004 Feb 4 10:28:57 penny kernel: Call Trace: [devfs_follow_link+31/36] [path_walk+1701/1964] [__user_walk+60/88] [sys_chown+22/72] [system_call+51/56] [startup_32+43/313] Feb 4 10:28:57 penny kernel: Code: 80 3f 2f 0f 85 c2 00 00 00 53 e8 b0 d2 ff ff ba 00 e0 ff ff Using defaults from ksymoops -t elf32-i386 -a i386 Code; Before first symbol _EIP: Code; Before first symbol 0: 80 3f 2f cmpb $0x2f,(%edi) Code; 0003 Before first symbol 3: 0f 85 c2 00 00 00 jnecb _EIP+0xcb 00cb Before first symbol Code; 0009 Before first symbol 9: 53push %ebx Code; 000a Before first symbol a: e8 b0 d2 ff ffcall d2bf _EIP+0xd2bf d2bf END_OF_CODE+356a3187/ Code; 000f Before first symbol f: ba 00 e0 ff ffmov$0xe000,%edx Feb 4 10:28:57 penny kernel: Unable to handle kernel NULL pointer dereference at virtual address Feb 4 10:28:57 penny kernel: c013b1c9 Feb 4 10:28:57 penny kernel: *pde = Feb 4 10:28:57 penny kernel: Oops: Feb 4 10:28:57 penny kernel: CPU:0 Feb 4 10:28:57 penny kernel: EIP:0010:[vfs_follow_link+33/348] Feb 4 10:28:57 penny kernel: EFLAGS: 00010217 Feb 4 10:28:57 penny kernel: eax: ebx: c39b3fa4 ecx: 0735 edx: c0320a60 Feb 4 10:28:57 penny kernel: esi: c3aea0e0 edi: ebp: esp: c39b3f10 Feb 4 10:28:57 penny kernel: ds: 0018 es: 0018 ss: 0018 Feb 4 10:28:57 penny kernel: Process ls (pid: 6303, stackpage=c39b3000) Feb 4 10:28:57 penny kernel: Stack: c39b3fa4 c3aea0e0 c3aea0e0 c39b3fa4 c015a703 c39b3fa4 Feb 4 10:28:57 penny kernel:c39b2000 c0138db9 c3aea0e0 c39b3fa4 c69c87e0 c31c4000 c39b3fa4 Feb 4 10:28:57 penny kernel:0002 0001 0002 c01382ea 0009 c3aea0e0 c31c4000 0004 Feb 4 10:28:57 penny kernel: Call Trace: [devfs_follow_link+31/36] [path_walk+1701/1964] [getname+90/152] [__user_walk+60/88] [sys_stat64+22/120] [system_call+51/56] Feb 4 10:28:57 penny kernel: Code: 80 3f 2f 0f 85 c2 00 00 00 53 e8 b0 d2 ff ff ba 00 e0 ff ff Code; Before first symbol _EIP: Code; Before first symbol 0: 80 3f 2f cmpb $0x2f,(%edi) Code; 0003 Before first symbol 3: 0f 85 c2 00 00 00 jnecb _EIP+0xcb 00cb Before first symbol Code; 0009 Before first symbol 9: 53push %ebx Code; 000a Before first symbol a: e8 b0 d2 ff ffcall d2bf _EIP+0xd2bf d2bf END_OF_CODE+356a3187/ Code; 000f Before first symbol f: ba 00 e0 ff ffmov$0xe000,%edx root@penny:/usr/src/linux/scripts # . ver_linux -- Versions installed: (if some fields are empty or look -- unusual then possibly you have very old versions) Linux penny 2.4.1 #1 Sat Feb 3 20:43:54 CET 2001 i686 unknown Kernel modules 2.4.1 Gnu C 2.95.3 Gnu Make 3.79.1 Binutils 2.10.1.0.2 Linux C Library2.2.1 Dynamic linker ldd (GNU libc) 2.2.1 Procps 2.0.7 Mount 2.10q Net-tools 2.05 Console-tools 0.2.3 Sh-utils 2.0.11 Modules Loaded rd sb sb_lib uart401 nfs mousedev
Re: 2.4.1 segfault when doing ls /dev/
Pierfrancesco Caci wrote: 48 ?S 0:00 /sbin/devfsd /dev on my box devfsd has pid 15, it comes just after the [kdaems] 1 ?S 0:04 init 2 ?SW 0:00 [keventd] 3 ?SW 0:00 [kapm-idled] 4 ?SW 0:00 [kswapd] 5 ?SW 0:00 [kreclaimd] 6 ?SW 0:00 [bdflush] 7 ?SW 0:00 [kupdate] 8 ?SW 0:00 [kreiserfsd] 15 ?S 0:00 devfsd /dev and it works with 2.4.x -- Pierre Rousselet [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing ls /dev/
:- "Pierre" == Pierre Rousselet [EMAIL PROTECTED] writes: Pierfrancesco Caci wrote: 48 ?S 0:00 /sbin/devfsd /dev on my box devfsd has pid 15, it comes just after the [kdaems] and it works with 2.4.x I can't see how this can affect performance/funtionality of devfsd. Can you try to stop the daemon and restart it to see if continues to work as before ? Pf -- --- Pierfrancesco Caci | ik5pvx | mailto:[EMAIL PROTECTED] - http://gusp.dyndns.org Firenze - Italia | Office for the Complication of Otherwise Simple Affairs Linux penny 2.4.1 #1 Sat Feb 3 20:43:54 CET 2001 i686 unknown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing ls /dev/
Pierfrancesco Caci wrote: I can't see how this can affect performance/funtionality of devfsd. Can you try to stop the daemon and restart it to see if continues to work as before ? /dev is mounted at boot time by the kernel (CONFIG_DEVFS_MOUNT=y). The system boots and runs without devfsd. You just can't start any process calling for non-existing device under /dev and not created by devfsd. For instance pppd or mc won't start by lack of pseudo-tty esd needs /dev/dsp ... i was thinking the trouble may come from some programme launched by your boot scripts before devfsd is running. is your version of fileutils 4.0.28 (ls --version) ? -- Pierre Rousselet [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing ls /dev/
:- "Pierre" == Pierre Rousselet [EMAIL PROTECTED] writes: /dev is mounted at boot time by the kernel (CONFIG_DEVFS_MOUNT=y). The system boots and runs without devfsd. You just can't start any process calling for non-existing device under /dev and not created by devfsd. For instance pppd or mc won't start by lack of pseudo-tty esd needs /dev/dsp ... Yes I know this. Actually, booting with "devfs=nomount s" is the only way to update the boot record with lilo and my existing lilo.conf. If I boot with devfs=nomount, I *can* ls /dev, without segfaulting. I don't want to access or use any device in /dev, I just want to stat /dev and see what's inside. There's something wrong with (I suspect) devfsd and the way it populates /dev with symlinks, whick make /dev un-listable but still usable, somewhat. i was thinking the trouble may come from some programme launched by your boot scripts before devfsd is running. I have no idea. Any other debian users reporting this ? is your version of fileutils 4.0.28 (ls --version) ? root@penny:/usr/src/linux # ls --version ls (fileutils) 4.0.37 Pf -- --- Pierfrancesco Caci | ik5pvx | mailto:[EMAIL PROTECTED] - http://gusp.dyndns.org Firenze - Italia | Office for the Complication of Otherwise Simple Affairs Linux penny 2.4.1 #1 Sat Feb 3 20:43:54 CET 2001 i686 unknown - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
Re: 2.4.1 segfault when doing ls /dev/
Pierfrancesco Caci wrote: Yes I know this. Actually, booting with "devfs=nomount s" is the only way to update the boot record with lilo and my existing lilo.conf. i can't do that on my box, /dev is only a mount point for devfs. assuming your /dev directory is dirty from something else than devfsd, could you try this while devfsd is running : #mkdir /devtest #mount none -t devfs /devtest #ls /devtest -- Pierre Rousselet [EMAIL PROTECTED] - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] Please read the FAQ at http://www.tux.org/lkml/
