shmem 2.6 kernel bug?

parisc-linux Carlos O'Donell 2 participants 3 messages Dec 4, 2003

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Carlos O'Donell

author

2003-12-04 04:06 UTC #0 lore raw

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

Carlos O'Donell

author

2003-12-04 05:01 UTC #1 lore raw

Quoted 7 lines · Carlos O'Donell

pa,
When I ssh into my box I see:
---
kernel BUG at mm/shmem.c:585!
Kernel addresses on the stack:

Quoted 6 lines

 [<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

Joel Soete

2003-12-04 07:17 UTC #2 lore raw

In reply to Carlos O'Donell

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

Quoted 8 lines

-- Original Message --
From: Carlos O'Donell <[email protected]>
To: [email protected]
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

Quoted 1 line

 [<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

Quoted 1 line

     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

Quoted 1 line

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

Quoted 1 line

       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

Quoted 1 line

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/

Quoted 1 line

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

Quoted 1 line

GNU ld version 2.14.90 20031106

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