Messages in this thread |  | | | Subject | Re: 2.5.58 Oops when booting from initrd - kobject_del | | From | Valdis.Kletnieks@vt ... | | Date | Tue, 14 Jan 2003 13:07:54 -0500 |
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On Tue, 14 Jan 2003 02:47:40 MST, "Ivan G." <ivangurdiev@attbi.com> said: > Kernel: 2.5.58 (everything but the tag changeset) > > My attempt to boot an initrd resulted in the following oops: > (scribbled down important parts) > ======================================================= > unable to handle kernel NULL pointer at virtual address 00000064
> Call Trace: > ========== > kobject_del+0x13/0x30 > kobject_unregister+0x13/0x30 > elv_unregister_queue+0x1c/0x30 > unlink_gendisk+0x13/0x40 > del_gendisk+0x80/0x140 > initrd_release+0x4e/0x90 > __fput+0xf1/0x100 > filp_close+0x74/0xa0 > sys_close+0x62/0xa0 > syscall_call+0x7/0xb > prepare_namespace+0x13a/0x1b0 > init+0x3a/0x160 > init+0x0/0x160 > kernel_thread_helper+0x5/0x18 > ... > Code: 8b 70 28 85 f6 0f 84 1e 01 00 00 8b 06 85 c0 75 08 0f 0b 02
I got bit by this one too. Just for grins, I did a 'make clean' and then rebuilt - same compiler and config - and the bzImage ended up one byte shorter.
A diff of the System.map files is interesting:
diff -c /boot/System.map-2.5.58 System.map *** /boot/System.map-2.5.58 2003-01-14 01:47:27.000000000 -0500 --- System.map 2003-01-14 12:57:30.000000000 -0500 *************** *** 1,5 **** 0000002a A snd_minor_info_done ! 00000080 A _binary_usr_initramfs_data_cpio_gz_size 000000dd A snd_card_info_done 000000fc A snd_memory_info_done 0000011b A snd_info_done --- 1,5 ---- 0000002a A snd_minor_info_done ! 0000007f A _binary_usr_initramfs_data_cpio_gz_size 000000dd A snd_card_info_done 000000fc A snd_memory_info_done 0000011b A snd_info_done *************** *** 21863,21872 **** c044d940 A __initcall_end c044e000 A __initramfs_start c044e000 T _binary_usr_initramfs_data_cpio_gz_start ! c044e080 A __initramfs_end c044e080 A __per_cpu_end c044e080 A __per_cpu_start - c044e080 T _binary_usr_initramfs_data_cpio_gz_end c044f000 A __bss_start c044f000 A __init_end c044f000 B rows --- 21863,21872 ---- c044d940 A __initcall_end c044e000 A __initramfs_start c044e000 T _binary_usr_initramfs_data_cpio_gz_start ! c044e07f A __initramfs_end ! c044e07f T _binary_usr_initramfs_data_cpio_gz_end c044e080 A __per_cpu_end c044e080 A __per_cpu_start c044f000 A __bss_start c044f000 A __init_end c044f000 B rows After a 'make clean', the size dropped from 0x80 to 0x7f - this cleaned up the one-byte overlap between per_cpu_start and cpio_gz_end, which looks suspicious to me. I'll try booting the new kernel when I get a chance. -- Valdis Kletnieks Computer Systems Senior Engineer Virginia Tech
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