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. Jan
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