"cat /proc/uptime" gives kernel oops. This also means ps and related tools are broken. Does not matter if root or a regular user does this. Reproducible: Always Steps to Reproduce: 1.build kernel with gentoo-sources-2.4.22-r5 2.install kernel and reboot 3.cat /proc/uptime Actual Results: got a kernel oops. the initscripts also triggered it from using the "ps" command. The kernel is completly useable besides this annoyance. Expected Results: no oops. just some values returned for ps and whatever app that needs to look at uptime values this is kernel oops: <1>Unable to handle kernel NULL pointer dereference at virtual address 00000108 printing eip: c02193c3 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c02193c3>] Not tainted EFLAGS: 00010246 eax: 00000108 ebx: 00000000 ecx: 0001cde0 edx: 00000000 esi: 00000064 edi: 0000049e ebp: 00000400 esp: c4ff1f08 ds: 0018 es: 0018 ss: 0018 Process cat (pid: 2313, stackpage=c4ff1000) Stack: 00000000 c0219671 00000108 c0163b54 ffffffeb c2c6cdc0 c4ff0000 00000001 c2c6cdc0 c01ebad3 00000028 c4ff1f7c 00000400 00000000 c4ff1f80 c4ff3000 c47ed8e0 00000400 c4ff3000 00000400 c0217111 c4ff3000 c4ff1f80 00000000 Call Trace: [<c0219671>] [<c01ebad3>] [<c0217111>] [<c01eab33>] [<c01b0e3f>] Code: 8b 08 89 c8 c1 e8 1f 31 d0 83 e0 01 01 c2 89 d0 31 d2 0f a4 This is oops after ksymoops: ksymoops 2.4.9 on i686 2.4.22-gentoo-r5. Options used -V (default) -k /proc/ksyms (default) -l /proc/modules (default) -o /lib/modules/2.4.22-gentoo-r5/ (default) -m /usr/src/linux/System.map (default) Warning: You did not tell me where to find symbol information. I will assume that the log matches the kernel and modules that are running right now and I'll use the default options above for symbol resolution. If the current kernel and/or modules do not match the log, you can get more accurate output by telling me the kernel version and where to find map, modules, ksyms etc. ksymoops -h explains the options. <1>Unable to handle kernel NULL pointer dereference at virtual address 00000108 c02193c3 *pde = 00000000 Oops: 0000 CPU: 0 EIP: 0010:[<c02193c3>] Not tainted Using defaults from ksymoops -t elf32-i386 -a i386 EFLAGS: 00010246 eax: 00000108 ebx: 00000000 ecx: 0001cde0 edx: 00000000 esi: 00000064 edi: 0000049e ebp: 00000400 esp: c4ff1f08 ds: 0018 es: 0018 ss: 0018 Process cat (pid: 2313, stackpage=c4ff1000) Stack: 00000000 c0219671 00000108 c0163b54 ffffffeb c2c6cdc0 c4ff0000 00000001 c2c6cdc0 c01ebad3 00000028 c4ff1f7c 00000400 00000000 c4ff1f80 c4ff3000 c47ed8e0 00000400 c4ff3000 00000400 c0217111 c4ff3000 c4ff1f80 00000000 Call Trace: [<c0219671>] [<c01ebad3>] [<c0217111>] [<c01eab33>] [<c01b0e3f>] Code: 8b 08 89 c8 c1 e8 1f 31 d0 83 e0 01 01 c2 89 d0 31 d2 0f a4 >>EIP; c02193c3 <get_64bits+13/40> <===== >>esp; c4ff1f08 <_end+4b74fe0/38506158> Trace; c0219671 <uptime_read_proc+81/150> Trace; c01ebad3 <get_empty_filp+53/160> Trace; c0217111 <proc_file_read+c1/1e0> Trace; c01eab33 <sys_read+a3/170> Trace; c01b0e3f <ret+0/5> Code; c02193c3 <get_64bits+13/40> 00000000 <_EIP>: Code; c02193c3 <get_64bits+13/40> <===== 0: 8b 08 mov (%eax),%ecx <===== Code; c02193c5 <get_64bits+15/40> 2: 89 c8 mov %ecx,%eax Code; c02193c7 <get_64bits+17/40> 4: c1 e8 1f shr $0x1f,%eax Code; c02193ca <get_64bits+1a/40> 7: 31 d0 xor %edx,%eax Code; c02193cc <get_64bits+1c/40> 9: 83 e0 01 and $0x1,%eax Code; c02193cf <get_64bits+1f/40> c: 01 c2 add %eax,%edx Code; c02193d1 <get_64bits+21/40> e: 89 d0 mov %edx,%eax Code; c02193d3 <get_64bits+23/40> 10: 31 d2 xor %edx,%edx Code; c02193d5 <get_64bits+25/40> 12: 0f a4 00 00 shld $0x0,%eax,(%eax) 1 warning issued. Results may not be reliable.
Created attachment 24215 [details] kernel config that i used
BTW, The ksymoops was ran with the bad kernel.
This has already been reported, resync, and remerge gentoo-sources *** This bug has been marked as a duplicate of 38208 ***
