Philippe Gerum wrote: > On Fri, 2007-08-10 at 13:46 +0200, Jan Kiszka wrote: >> Jan Kiszka wrote: >>> Hi Philippe, >>> >>> this appears to be related to 2.6.22+ only: >>> >>> ------------[ cut here ]------------ >>> kernel BUG at fs/buffer.c:1230! >>> invalid opcode: 0000 [#1] >>> PREEMPT >>> Modules linked in: xeno_rtdm xeno_nucleus ip6t_LOG xt_TCPMSS nvram uinput >>> snd_pcm_oss cifs snd_mixer_oss snd_seq snd_seq_device radeon drm wlan_tkip >>> af_packet thinkpad_acpi button battery ac ip6t_REJECT xt_state iptable_nat >>> nf_nat ip6table_mangle nf_conntrack_ipv4 nf_conntrack nfnetlink >>> ip6table_filter ip6_tables ipv6 nls_iso8859_1 nls_cp437 vfat fat nls_utf8 >>> ntfs dm_mod fuse wlan_scan_sta ath_rate_sample pcmcia snd_intel8x0 >>> firmware_class snd_ac97_codec ac97_bus snd_pcm ath_pci nsc_ircc wlan ide_cd >>> irda snd_timer e100 cdrom ath_hal(P) snd i2c_i801 uhci_hcd ehci_hcd mii >>> yenta_socket rsrc_nonstatic soundcore usbcore snd_page_alloc i2c_core >>> intel_agp crc_ccitt pcmcia_core agpgart parport_pc lp parport reiserfs edd >>> fan piix ide_disk ide_core >>> CPU: 0 >>> EIP: 0060:[<c0187fc3>] Tainted: P VLI >>> EFLAGS: 00210246 (2.6.22.2-adeos #7) >>> EIP is at __find_get_block+0x2c/0x1e8 >>> eax: 00000000 ebx: e3635dac ecx: 00000000 edx: 00002e4e >>> esi: 00001000 edi: eeeb3080 ebp: e3635b30 esp: e3635af8 >>> ds: 007b es: 007b fs: 0000 gs: 0033 ss: 0068 >>> Process kio_file (pid: 7433, ti=e3634000 task=e6d780b0 task.ti=e3634000)<0> >>> I-pipe domain Linux >>> Stack: 00002e4e 00000000 c16e0718 eff36a90 e3634000 e3635b1c c0308f1e >>> c05dd700 >>> 00000000 e3635b2c c030bbfd e3635dac 00001000 e3635db4 e3635b98 >>> c01881a4 >>> 00001000 c05dd700 511c5a51 00000022 c014aade 00002e4e 00000000 >>> eeeb3080 >>> Call Trace: >>> [<c0104fd0>] show_trace_log_lvl+0x1f/0x34 >>> [<c0105085>] show_stack_log_lvl+0xa0/0xa8 >>> [<c0105294>] show_registers+0x207/0x35c >>> [<c01054fd>] die+0x114/0x22a >>> [<c01056a1>] do_trap+0x8e/0xa7 >>> [<c0105a2f>] do_invalid_op+0x8d/0x97 >>> [<c0113b1a>] __ipipe_handle_exception+0xb1/0x11f >>> [<c030be53>] error_code+0x6f/0x7c >>> [<c01881a4>] __getblk+0x25/0x29a >>> [<f0bdc058>] search_by_key+0x97/0xe38 [reiserfs] >>> [<f0bc6c10>] search_by_entry_key+0x20/0x231 [reiserfs] >>> [<f0bc6e96>] reiserfs_find_entry+0x75/0x2d0 [reiserfs] >>> [<f0bc7643>] reiserfs_lookup+0x6d/0x122 [reiserfs] >>> ... >>> >>> I get this over 2.6.22.2 with latest trunk + ipipe-1.9-03, only >>> modprobe'ing xeno_rtdm (so that the nucleus becomes active) and then >>> logging into KDE. Same box, same Xenomai, but 2.6.20.15: no problem at >>> all (also xeno-text runs fine here, BTW). When Xenomai is inactive, >>> 2.6.22 makes no problems as well. Note that the tracer is compiled in, >>> but is deactivated. Activating it (with the hope to get a panic >>> backtrace) makes the issue disappear as well. >> Ah, and then there was this warning once (same kernel that reliably BUGs): >> >> WARNING: at kernel/softirq.c:138 local_bh_enable() >> [<c0104fd0>] show_trace_log_lvl+0x1f/0x34 >> [<c0105c62>] show_trace+0x17/0x19 >> [<c0105cfc>] dump_stack+0x1a/0x1c >> [<c011f38a>] local_bh_enable+0x53/0xb3 >> [<c028b6d5>] lock_sock_nested+0xbe/0xc6 >> [<c0288feb>] sock_fasync+0x68/0x125 >> [<c028a0f3>] sock_close+0x2a/0x38 >> [<c016bc1a>] __fput+0xb9/0x195 >> [<c016bd11>] fput+0x1b/0x1d >> [<c0169572>] filp_close+0x59/0x61 >> [<c016a5cd>] sys_close+0x73/0xab >> [<c0103f05>] sysenter_past_esp+0x6e/0x72 >> >> Probably a different symptom of the same bug. >> > > Does this disappear with PREEMPT off? >
Nope. Jan
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