[parisc-linux] shmem 2.6 kernel bug?

[parisc-linux] shmem 2.6 kernel bug?

[Carlos O'Donell]

pa,

When I ssh into my box I see:
---
kernel BUG at mm/shmem.c:585!
Kernel addresses on the stack:
 [<000000001016f338>] unmap_page_range+0xa0/0x290
 [<0000000010126e78>] sys32_rt_sigaction+0x90/0x118
 [<000000001011313c>] sys_mmap2+0x14/0x20
 [<000000001010ce4c>] syscall_exit+0x0/0x14
 [<000000001010c094>] intr_check_sig+0x0/0xc
---

    571 static void shmem_delete_inode(struct inode *inode)
    572 {
    573         struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
    574         struct shmem_inode_info *info = SHMEM_I(inode);
    575 
    576         if (inode->i_op->truncate == shmem_truncate) {
    577                 spin_lock(&shmem_ilock);
    578                 list_del(&info->list);
    579                 spin_unlock(&shmem_ilock);
    580                 if (info->flags & VM_ACCOUNT)
    581			vm_unacct_memory(VM_ACCT(inode->i_size));
    582                 inode->i_size = 0;
    583                 shmem_truncate(inode);
    584         }
==> 585         BUG_ON(inode->i_blocks);
    586         spin_lock(&sbinfo->stat_lock);
    587         sbinfo->free_inodes++;
    588         spin_unlock(&sbinfo->stat_lock);
    589         clear_inode(inode);
    590 }

*Carlos shrugs*

Linux firin 2.6.0-test11-pa0 #1 Wed Dec 3 14:51:57 EST 2003 parisc64 GNU/Linux

Reading specs from
/home/carlos/src/toolchain-build/install/lib/gcc-lib/hppa64-linux/3.3.1/specs
Configured with: ../gcc-cvs/configure --host=hppa-linux
--prefix=/home/carlos/src/toolchain-build/install --target=hppa64-linux
--build=hppa-linux
--with-gnu-ld=/home/carlos/src/toolchain-build/install/bin/ld
--with-gnu-as=/home/carlos/src/toolchain-build/install/bin/as
--enable-languages=c
Thread model: posix
gcc version 3.3.1

GNU ld version 2.14.90 20031106

c.

Re: [parisc-linux] shmem 2.6 kernel bug?

[Carlos O'Donell]

On Wed, Dec 03, 2003 at 11:00:26PM -0500, Carlos O'Donell wrote:
> 
> pa,
> 
> When I ssh into my box I see:
> ---
> kernel BUG at mm/shmem.c:585!
> Kernel addresses on the stack:
>  [<000000001016f338>] unmap_page_range+0xa0/0x290
>  [<0000000010126e78>] sys32_rt_sigaction+0x90/0x118
>  [<000000001011313c>] sys_mmap2+0x14/0x20
>  [<000000001010ce4c>] syscall_exit+0x0/0x14
>  [<000000001010c094>] intr_check_sig+0x0/0xc
> ---

kernel BUG at mm/shmem.c:585!
Kernel addresses on the stack:
 [<00000000101a15d4>] dput+0x13c/0x240
 [<0000000010141900>] do_group_exit+0x50/0x108
 [<00000000101419cc>] sys_exit_group+0x14/0x20
 [<000000001010ce4c>] syscall_exit+0x0/0x14
 [<000000001010c094>] intr_check_sig+0x0/0xc

c.

RE: [parisc-linux] shmem 2.6 kernel bug?

[Joel Soete]

hmm I didn't mentioned till now because of some non cvs stuff in my kernel
but I got same messages (ie only "BUG at mm/shmem.c:585!") with k-2.4.23
64bits on my b2k build with latest gcc-3.3.2.

hth,
    Joel

>-- Original Message --
>From: Carlos O'Donell <carlos@baldric.uwo.ca>
>To: parisc-linux@lists.parisc-linux.org
>Date: Wed, 3 Dec 2003 23:00:26 -0500
>Subject: [parisc-linux] shmem 2.6 kernel bug?
>
>
>
pa,

When I ssh into my box I see:
---
kernel BUG at mm/shmem.c:585!
Kernel addresses on the stack:
 [<000000001016f338>] unmap_page_range+0xa0/0x290
 [<0000000010126e78>] sys32_rt_sigaction+0x90/0x118
 [<000000001011313c>] sys_mmap2+0x14/0x2
>
 [<000000001010ce4c>] syscall_exit+0x0/0x14
 [<000000001010c094>] intr_check_sig+0x0/0xc
---

    571 static void shmem_delete_inode(struct inode *inode)
    572 {
    573         struct shmem_sb_info *sbinfo = SHMEM_SB(inode->i_sb);
    574  
>      struct shmem_inode_info *info = SHMEM_I(inode);
    575 
    576         if (inode->i_op->truncate == shmem_truncate) {
    577                 spin_lock(&shmem_ilock);
    578                 list_del(&info->list);
    579                 s
>in_unlock(&shmem_ilock);
    580                 if (info->flags & VM_ACCOUNT)
    581			vm_unacct_memory(VM_ACCT(inode->i_size));
    582                 inode->i_size = 0;
    583                 shmem_truncate(inode);
    584         }
==> 585
>        BUG_ON(inode->i_blocks);
    586         spin_lock(&sbinfo->stat_lock);
    587         sbinfo->free_inodes++;
    588         spin_unlock(&sbinfo->stat_lock);
    589         clear_inode(inode);
    590 }

*Carlos shrugs*

Linux firin
>2.6.0-test11-pa0 #1 Wed Dec 3 14:51:57 EST 2003 parisc64 GNU/Linux

Reading specs from
/home/carlos/src/toolchain-build/install/lib/gcc-lib/hppa64-linux/3.3.1/specs
Configured with: ../gcc-cvs/configure --host=hppa-linux
--prefix=/home/carlos/src/
>oolchain-build/install --target=hppa64-linux
--build=hppa-linux
--with-gnu-ld=/home/carlos/src/toolchain-build/install/bin/ld
--with-gnu-as=/home/carlos/src/toolchain-build/install/bin/as
--enable-languages=c
Thread model: posix
gcc version 3.3.1
>

GNU ld version 2.14.90 20031106

c.

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