Messages in this thread | | | From | Andrey Borzenkov <> | Subject | 2.5.74 - BUG in kfree during sys_close from netstat | Date | Tue, 8 Jul 2003 21:59:50 +0400 |
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Mandrake 9.1, kernel 2.5.74. Started kmail, started kppp, connected, attempted to send or receive - nothing happened. Run netstat -an - and got
------------[ cut here ]------------ kernel BUG at mm/slab.c:1537! invalid operand: 0000 [#2] CPU: 0 EIP: 0060:[<c014c530>] Tainted: P EFLAGS: 00010002 EIP is at kfree+0x2e0/0x2f0 eax: 0000002c ebx: 00040000 ecx: cf1fe670 edx: 00000001 esi: c02b9ee0 edi: 00000100 ebp: c6443f34 esp: c6443f14 ds: 007b es: 007b ss: 0068 Process netstat (pid: 10138, threadinfo=c6442000 task=c2e2ad40) Stack: c6443f28 c02752fe cdcc0908 00000001 00000206 cdcc0908 c34438d4 c245537c c6443f4c c01881b8 00000100 c34438d4 c34438d4 cffdf8e4 c6443f70 c0165089 c245537c c34438d4 c245537c c996fa98 c34438d4 c69ee724 00000000 c6443f98 Call Trace: [<c02752fe>] raw_seq_start+0x4e/0x60 [<c01881b8>] seq_release_private+0x18/0x32 [<c0165089>] __fput+0x129/0x130 [<c0163703>] filp_close+0xc3/0x110 [<c01637e2>] sys_close+0x92/0x120 [<c010b527>] syscall_call+0x7/0xb
Code: 0f 0b 01 06 d1 93 2b c0 e9 44 fd ff ff 8d 76 00 55 89 e5 57
this happened more than once; previous stack (I do not know actually what triggered it - I did not run netstat for sure) looked like:
PPP BSD Compression module registered PPP Deflate Compression module registered kfree_debugcheck: out of range ptr 100h. ------------[ cut here ]------------ kernel BUG at mm/slab.c:1537! invalid operand: 0000 [#1] CPU: 0 EIP: 0060:[<c014c530>] Tainted: P EFLAGS: 00010002 EIP is at kfree+0x2e0/0x2f0 eax: 0000002c ebx: 00040000 ecx: cf1fe670 edx: 00000001 esi: c02b9ee0 edi: 00000100 ebp: c7789f34 esp: c7789f14 ds: 007b es: 007b ss: 0068 Process netstat (pid: 8509, threadinfo=c7788000 task=c2c4d2f0) Stack: c7789f28 c02752fe c32d1dc8 00000001 00000206 c32d1dc8 c462c414 c245537c c7789f4c c01881b8 00000100 c462c414 c462c414 cffdf8e4 c7789f70 c0165089 c245537c c462c414 c245537c c996fa98 c462c414 c2c3b8d4 00000000 c7789f98 Call Trace: [<c02752fe>] raw_seq_start+0x4e/0x60 [<c01881b8>] seq_release_private+0x18/0x32 [<c0165089>] __fput+0x129/0x130 [<c0163703>] filp_close+0xc3/0x110 [<c01637e2>] sys_close+0x92/0x120 [<c010b527>] syscall_call+0x7/0xb
Code: 0f 0b 01 06 d1 93 2b c0 e9 44 fd ff ff 8d 76 00 55 89 e5 57 <3>kfree_debugcheck: out of range ptr 100h.
Just tried and when connection is done while kmail is not started it works. I am not sure what kmail does - except that it actually is the only application to actively use IP here most of the time.
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