BUG: Mingetty gets tainted-memory bug in cahced_lookup() durring tty open
[1.] Intermittent tainted-mem error in mingetty in cached_lookup() in tty open code [2.] During bootup, mingetty got a tainted memory bug in cached_lookup() while doing some tty opening stuff; this has only happened once, and I don't know how to reproduce. [3.] tty [4.] Linux version 2.4.5-ac9 (root@kyoko) (gcc version 2.96 2731 (Red Hat Linux 7.1 2.96-81)) #2 Tue Jun 12 22:05:32 PDT 2001 [5.] kernel BUG at slab.c:1244! invalid operand: CPU:0 EIP:0010:[kmalloc+324/496] EFLAGS: 00010086 eax: 001b ebx: c1447768 ecx: 0001 edx: 1810 esi: cea5a000 edi: cea5a9aa ebp: 00012800 esp: cebffe24 ds: 0018 es: 0018 ss: 0018 Process mingetty (pid: 903, stackpage=cebff000) Stack: c02233ef 04dc cea5a000 1000 cea5a9aa 0246 cfeecd88 c01393f0 cfb72e04 cebffe80 c02cfdc0 0405 0004 c017bf0d 0c3c 0007 0004 c017cb85 0004 0004 cfeecd87 Call Trace: [cached_lookup+16/80] [alloc_tty_struct+13/48] [init_dev+133/1008] [vfs_follow_link+225/336] [tty_open+331/896] [path_walk+1778/2048] [do_page_fault+0/1168] [do_page_fault+378/1168] [devfs_open+198/416] [dentry_open+195/320] [filp_open+77/96] [getname+91/160] [sys_open+54/176] [system_call+51/56] Code: 0f 0b 58 8b 6b 10 5a 81 e5 00 04 00 00 74 4d b8 a5 c2 0f 17 Jun 13 18:29:49 kyoko kernel: Linux version 2.4.5-ac9 (root@kyoko) (gcc version 2.96 2731 (Red Hat Linux 7.1 2.96-81)) #2 Tue Jun 12 22:05:32 PDT 2001 [6.] [7.] Using devfs mingetty version 0.9.4-10 [7.1] # sh scripts/ver_linux Linux kyoko 2.4.5-ac9 #2 Tue Jun 12 22:05:32 PDT 2001 i686 unknown Gnu C 2.96 Gnu make 3.79.1 binutils 2.10.91.0.2 util-linux 2.11e mount 2.9w modutils 2.4.2 e2fsprogs 1.19 reiserfsprogs 3.x.0b pcmcia-cs 3.0.14 PPP2.3.7 Linux C Library2.2.2 Dynamic linker (ldd) 2.2.2 Linux C++ Library 2.. Procps 2.0.7 Net-tools 1.60 Console-tools 1999.03.02 Sh-utils 2.0 Modules Loaded ipt_REJECT ipt_state ipt_LOG ipt_unclean iptable_mangle iptable_filter ip_nat_ftp ip_conntrack_ftp iptable_nat tulip es1371 soundcore ac97_codec vfat fat sr_mod cdrom [7.2] # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : Celeron (Mendocino) stepping: 5 cpu MHz : 498.888 cache size : 128 KB fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug: no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr bogomips: 996.14 [7.3] # cat /proc/modules ipt_REJECT 3104 3 (autoclean) ipt_state848 2 (autoclean) ipt_LOG 3568 14 (autoclean) ipt_unclean 6912 2 (autoclean) iptable_mangle 1968 0 (autoclean) (unused) iptable_filter 1968 0 (autoclean) (unused) ip_nat_ftp 3712 0 (unused) ip_conntrack_ftp3968 0 [ip_nat_ftp] iptable_nat20512 1 [ip_nat_ftp] tulip 38816 1 (autoclean) es1371 26800 0 soundcore 4080 4 [es1371] ac97_codec 8672 0 [es1371] vfat9232 0 (unused) fat31264 0 [vfat] sr_mod 12656 0 (autoclean) (unused) cdrom 28256 0 (autoclean) [sr_mod] [7.4] # cat /proc/ioports -001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(auto) 0376-0376 : ide1 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(auto) 0400-043f : Intel Corporation 82371AB PIIX4 ACPI 0440-045f : Intel Corporation 82371AB PIIX4 ACPI 0cf8-0cff : PCI conf1 d000-dfff : PCI Bus #01 d800-d8ff : ATI Technologies Inc 3D Rage Pro AGP 1X/2X e800-e8ff : Lite-On Communications Inc LNE100TX e800-e8ff : tulip ef00-ef3f : Ensoniq ES1371 [AudioPCI-97] ef00-ef3f : es1371 ef80-ef9f : Intel Corporation 82371AB PIIX4 USB ffa0-ffaf : Intel Corporation 82371AB PIIX4 IDE ffa0-ffa7 : ide0 ffa8-ffaf : ide1 # cat /proc/iomem -0009fbff : System RAM 0009fc00-0009 : reserved 000a-000b : Video RAM area 000c-000c7fff : Video ROM 000f-000f : System ROM 0010-0ffd : System RAM 0010-0021b055 : Kernel code 0021b056-0027217f : Kernel data 0ffe-0fff7fff : ACPI Tables 0fff8000-0fff : ACPI Non-volatile Storage f480-f48f : PCI Bus #01 f800-fbff : Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge fca0-feaf : PCI Bus #01 fd00-fdff : ATI
BUG: Mingetty gets tainted-memory bug in cahced_lookup() durring tty open
[1.] Intermittent tainted-mem error in mingetty in cached_lookup() in tty open code [2.] During bootup, mingetty got a tainted memory bug in cached_lookup() while doing some tty opening stuff; this has only happened once, and I don't know how to reproduce. [3.] tty [4.] Linux version 2.4.5-ac9 (root@kyoko) (gcc version 2.96 2731 (Red Hat Linux 7.1 2.96-81)) #2 Tue Jun 12 22:05:32 PDT 2001 [5.] kernel BUG at slab.c:1244! invalid operand: CPU:0 EIP:0010:[kmalloc+324/496] EFLAGS: 00010086 eax: 001b ebx: c1447768 ecx: 0001 edx: 1810 esi: cea5a000 edi: cea5a9aa ebp: 00012800 esp: cebffe24 ds: 0018 es: 0018 ss: 0018 Process mingetty (pid: 903, stackpage=cebff000) Stack: c02233ef 04dc cea5a000 1000 cea5a9aa 0246 cfeecd88 c01393f0 cfb72e04 cebffe80 c02cfdc0 0405 0004 c017bf0d 0c3c 0007 0004 c017cb85 0004 0004 cfeecd87 Call Trace: [cached_lookup+16/80] [alloc_tty_struct+13/48] [init_dev+133/1008] [vfs_follow_link+225/336] [tty_open+331/896] [path_walk+1778/2048] [do_page_fault+0/1168] [do_page_fault+378/1168] [devfs_open+198/416] [dentry_open+195/320] [filp_open+77/96] [getname+91/160] [sys_open+54/176] [system_call+51/56] Code: 0f 0b 58 8b 6b 10 5a 81 e5 00 04 00 00 74 4d b8 a5 c2 0f 17 Jun 13 18:29:49 kyoko kernel: Linux version 2.4.5-ac9 (root@kyoko) (gcc version 2.96 2731 (Red Hat Linux 7.1 2.96-81)) #2 Tue Jun 12 22:05:32 PDT 2001 [6.] [7.] Using devfs mingetty version 0.9.4-10 [7.1] # sh scripts/ver_linux Linux kyoko 2.4.5-ac9 #2 Tue Jun 12 22:05:32 PDT 2001 i686 unknown Gnu C 2.96 Gnu make 3.79.1 binutils 2.10.91.0.2 util-linux 2.11e mount 2.9w modutils 2.4.2 e2fsprogs 1.19 reiserfsprogs 3.x.0b pcmcia-cs 3.0.14 PPP2.3.7 Linux C Library2.2.2 Dynamic linker (ldd) 2.2.2 Linux C++ Library 2.. Procps 2.0.7 Net-tools 1.60 Console-tools 1999.03.02 Sh-utils 2.0 Modules Loaded ipt_REJECT ipt_state ipt_LOG ipt_unclean iptable_mangle iptable_filter ip_nat_ftp ip_conntrack_ftp iptable_nat tulip es1371 soundcore ac97_codec vfat fat sr_mod cdrom [7.2] # cat /proc/cpuinfo processor : 0 vendor_id : GenuineIntel cpu family : 6 model : 6 model name : Celeron (Mendocino) stepping: 5 cpu MHz : 498.888 cache size : 128 KB fdiv_bug: no hlt_bug : no f00f_bug: no coma_bug: no fpu : yes fpu_exception : yes cpuid level : 2 wp : yes flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr bogomips: 996.14 [7.3] # cat /proc/modules ipt_REJECT 3104 3 (autoclean) ipt_state848 2 (autoclean) ipt_LOG 3568 14 (autoclean) ipt_unclean 6912 2 (autoclean) iptable_mangle 1968 0 (autoclean) (unused) iptable_filter 1968 0 (autoclean) (unused) ip_nat_ftp 3712 0 (unused) ip_conntrack_ftp3968 0 [ip_nat_ftp] iptable_nat20512 1 [ip_nat_ftp] tulip 38816 1 (autoclean) es1371 26800 0 soundcore 4080 4 [es1371] ac97_codec 8672 0 [es1371] vfat9232 0 (unused) fat31264 0 [vfat] sr_mod 12656 0 (autoclean) (unused) cdrom 28256 0 (autoclean) [sr_mod] [7.4] # cat /proc/ioports -001f : dma1 0020-003f : pic1 0040-005f : timer 0060-006f : keyboard 0070-007f : rtc 0080-008f : dma page reg 00a0-00bf : pic2 00c0-00df : dma2 00f0-00ff : fpu 0170-0177 : ide1 01f0-01f7 : ide0 02f8-02ff : serial(auto) 0376-0376 : ide1 03c0-03df : vga+ 03f6-03f6 : ide0 03f8-03ff : serial(auto) 0400-043f : Intel Corporation 82371AB PIIX4 ACPI 0440-045f : Intel Corporation 82371AB PIIX4 ACPI 0cf8-0cff : PCI conf1 d000-dfff : PCI Bus #01 d800-d8ff : ATI Technologies Inc 3D Rage Pro AGP 1X/2X e800-e8ff : Lite-On Communications Inc LNE100TX e800-e8ff : tulip ef00-ef3f : Ensoniq ES1371 [AudioPCI-97] ef00-ef3f : es1371 ef80-ef9f : Intel Corporation 82371AB PIIX4 USB ffa0-ffaf : Intel Corporation 82371AB PIIX4 IDE ffa0-ffa7 : ide0 ffa8-ffaf : ide1 # cat /proc/iomem -0009fbff : System RAM 0009fc00-0009 : reserved 000a-000b : Video RAM area 000c-000c7fff : Video ROM 000f-000f : System ROM 0010-0ffd : System RAM 0010-0021b055 : Kernel code 0021b056-0027217f : Kernel data 0ffe-0fff7fff : ACPI Tables 0fff8000-0fff : ACPI Non-volatile Storage f480-f48f : PCI Bus #01 f800-fbff : Intel Corporation 440BX/ZX - 82443BX/ZX Host bridge fca0-feaf : PCI Bus #01 fd00-fdff : ATI
