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https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=85 Summary: couldn't write file ,call syscall ,ex. sys_open Product: netfilter/iptables Version: linux-2.4.x Platform: i386 OS/Version: RedHat Linux Status: NEW Severity: major Priority: P2 Component: ip_tables (kernel) AssignedTo: zpeak@163.com ReportedBy: zpea...

https://bugzilla.netfilter.org/cgi-bin/bugzilla/show_bug.cgi?id=85 kaber@trash.net changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |RESOLVED Resolution| |INVALID ------- Additional Comments From kaber@trash.net

...up+41/160] ext3_lookup+0x29/0xa0 Dec 11 04:03:56 fendrian kernel: [__lookup_hash+108/160] __lookup_hash+0x6c/0xa0 Dec 11 04:03:56 fendrian kernel: [open_namei+279/992] open_namei+0x117/0x3e0 Dec 11 04:03:56 fendrian kernel: [filp_open+46/96] filp_open+0x2e/0x60 Dec 11 04:03:56 fendrian kernel: [sys_open+59/112] sys_open+0x3b/0x70 Dec 11 04:03:56 fendrian kernel: [syscall_call+7/11] syscall_call+0x7/0xb Dec 11 04:03:56 fendrian kernel: Daniel -- > I have no life, and I must scream. And in response, thus spake the Oracle: } And there we have it, modern music summed up in one tidy sentenc...

...xt3_std_error+0x30/0x40 [<c0162c0a>] ext3_setattr+0x19a/0x1b0 [<c014b606>] notify_change+0xe6/0x180 [<c013696b>] do_truncate+0x5b/0x78 [<c0142d41>] may_open+0x165/0x17c [<c0143015>] open_namei+0x2bd/0x3d0 [<c013770f>] filp_open+0x3b/0x5c [<c0137a63>] sys_open+0x37/0x78 [<c0108877>] syscall_call+0x7/0xb Code: 80 38 00 74 07 40 4a 83 fa ff 75 f4 29 c8 89 44 24 10 8b 44 grabbing to the ext2 partition: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ Unable to handle kernel paging request at virtual address 0a00007c printing eip: c012d596 *pde = 00000000 Oops: 0...

Hi, Could someone point me to documentation or explain in detail, process of creating file.(space reservation, inode....) What is happen at low lavel? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://listman.redhat.com/archives/ext3-users/attachments/20060713/2c862514/attachment.htm>

...310 [ 56.593432] ? cdev_put+0x30/0x30 [ 56.593433] vfs_open+0x4f/0x70 [ 56.593434] ? may_open+0x9b/0x100 [ 56.593434] path_openat+0x2b2/0x1570 [ 56.593436] ? move_addr_to_user+0xba/0xd0 [ 56.593437] do_filp_open+0x91/0x100 [ 56.593439] ? __alloc_fd+0x46/0x170 [ 56.593439] do_sys_open+0x125/0x210 [ 56.593440] SyS_open+0x1e/0x20 [ 56.593442] entry_SYSCALL_64_fastpath+0x1e/0xad [ 56.593442] RIP: 0033:0x7fc8a9085620 [ 56.593443] RSP: 002b:00007ffc0d30b908 EFLAGS: 00000246 ORIG_RAX: 0000000000000002 [ 56.593443] RAX: ffffffffffffffda RBX: 0000000001090f40 RCX: 00007fc8a9...

Hi, gdbserver-xen coredump after i step through a few lines of code. build dom0 with debug_domu. Enable debuginfo and frame pointer for dom U and attach the domu with gdbserver . In gdb put breakpoint at say sys_open and after going through few lines of code gdbserver-xen coredumps. The resulting core file has the below stack $gdb /usr/local/bin/gdbserver-xen ./core GNU gdb 6.3-debian Copyright 2004 Free Software Foundation, Inc. GDB is free software, covered by the GNU General Public License, and you are w...

...======================================================== --- linux-2.6.15.orig/init/initramfs.c +++ linux-2.6.15/init/initramfs.c @@ -249,6 +249,7 @@ static int __init do_name(void) if (dry_run) return 0; if (S_ISREG(mode)) { + sys_unlink(collected); if (maybe_link() >= 0) { wfd = sys_open(collected, O_WRONLY|O_CREAT, mode); if (wfd >= 0) { @@ -263,6 +264,7 @@ static int __init do_name(void) sys_chmod(collected, mode); } else if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { + sys_unlink(collected); if (maybe_link() == 0) { sys_mknod(...

...198/568] [grow_inodes+32/428] [cprt+14006/37792] [get_new_inode+197/312] [iget4+117/128] [__brelse+29/192] [iget+22/32] [ext3_lookup+90/140] [real_lookup+91/180] [permission+32/56] [lookup_dentry+304/504] [__fput+74/84] [open_namei+105/776] [fput+70/84] [filp_open+74/264] [filp_open+17/264] [sys_open+63/160] [sys_open+38/160] [system_call+52/56] Code: 8b 47 08 3d 2b 2f c3 a5 0f 85 be 01 00 00 f6 46 05 01 0f 85 May 2 11:32:00 - While issuing an du -sk on an ext3 filesystem. du -sk segfaulted. Unable to handle kernel paging request at virtual address 8ec91fc8 current->tss.cr3 = 0b...

...x1df [<ffffffff802bc094>] ? get_empty_filp+0xfc/0x188 [<ffffffff802c59bd>] path_lookup_open+0x5a/0x9b [<ffffffff802c6588>] do_filp_open+0xb6/0x899 [<ffffffff802cf62e>] ? alloc_fd+0x3a/0x12e [<ffffffff802cf711>] ? alloc_fd+0x11d/0x12e [<ffffffff802b92aa>] do_sys_open+0x53/0xd3 [<ffffffff802b9353>] sys_open+0x1b/0x1d [<ffffffff8020baeb>] system_call_fastpath+0x16/0x1b Device => Id: 253,2 Uuid: 8A77044F9D98416FAB240B44B1843EDA Gen: 0x7622CA50 Label: Volume => State: 2 Flags: 0x0 Sizes => Block: 4096 Cluster: 4096 Featu...

...951 <ext3_create+81/110> Trace; c014239a <vfs_create+10a/160> Trace; c014219d <lookup_hash+8d/c0> Trace; c014253c <open_namei+14c/630> Trace; c014a11c <dput+1c/150> Trace; c0129270 <file_read_actor+0/e0> Trace; c01366e6 <filp_open+36/60> Trace; c0136a34 <sys_open+34/c0> Trace; c0106ffb <system_call+33/38> Code; c0165908 <journal_start+58/d0> 00000000 <_EIP>: Code; c0165908 <journal_start+58/d0> <===== 0: 0f 0b ud2a <===== Code; c016590a <journal_start+5a/d0> 2: 83 c4 14...

...v_open+0x1c/0x44 Mar 27 16:52:05 cjcsrv kernel: [<c0475937>] __dentry_open+0xc7/0x1ab Mar 27 16:52:05 cjcsrv kernel: [<c0475a7f>] nameidata_to_filp+0x19/0x28 Mar 27 16:52:05 cjcsrv kernel: [<c0475ab9>] do_filp_open+0x2b/0x31 Mar 27 16:52:05 cjcsrv kernel: [<c0475afd>] do_sys_open+0x3e/0xae Mar 27 16:52:05 cjcsrv kernel: [<c0475b9a>] sys_open+0x16/0x18 Mar 27 16:52:05 cjcsrv kernel: [<c0404f4b>] syscall_call+0x7/0xb Mar 27 16:52:05 cjcsrv kernel: ======================= Mar 27 16:52:19 cjcsrv kernel: ide1: reset timed-out, status=0xd0 ide1 has a CD attached....

..._console( } console_initcall(set_preferred_console); +/* + * Platform-specific configuration commands which don't come from + * the actual kernel command line. Write them into a file in rootfs + * so kinit can pick them up. + */ +static int __init set_arch_init_commands(void) +{ + int fd = sys_open("/arch.cmd", O_WRONLY|O_CREAT|O_APPEND, 0666); + char buffer[256]; + int len = 0; + + if (fd < 0) + return fd; + + buffer[0] = 'r'; + buffer[1] = root_flags ? 'o' : 'w'; + buffer[2] = '\n'; + len = 3; + +#ifdef CONFIG_BLK_DEV_RAM + len += min((int)(size...

...ffffff81071d71>] ? sched_clock_local+0x12/0x75 [ 2161.182033] [<ffffffff8112e510>] do_filp_open+0x3d/0x89 [ 2161.187301] [<ffffffff8146945f>] ? _raw_spin_unlock+0x2b/0x2f [ 2161.192937] [<ffffffff81139104>] ? alloc_fd+0x181/0x193 [ 2161.198541] [<ffffffff81121548>] do_sys_open+0x74/0x106 [ 2161.204058] [<ffffffff811215fa>] sys_open+0x20/0x22 [ 2161.209488] [<ffffffff8146fec2>] system_call_fastpath+0x16/0x1b [ 2161.215279] INFO: lockdep is turned off. [ 2161.219841] Kernel panic - not syncing: hung_task: blocked tasks [ 2161.225647] Pid: 42, comm: khungtaskd...

...x20e/0x25e [<c0470daf>] get_empty_filp+0x99/0x15e [<c047dfd7>] __path_lookup_intent_open+0x42/0x72 [<c047e056>] path_lookup_open+0xf/0x13 [<c047e15a>] open_namei+0x7b/0x609 [<c046e8ca>] do_filp_open+0x1c/0x31 [<c046f582>] sys_chdir+0x4f/0x57 [<c046e91d>] do_sys_open+0x3e/0xae [<c046e9ba>] sys_open+0x16/0x18 [<c0404eff>] syscall_call+0x7/0xb ======================= Code: 0c 29 d0 83 e8 18 c1 e8 03 39 c1 74 29 68 d4 22 8a f8 68 80 01 00 00 68 3e 21 8a f8 68 68 12 8a f8 68 4e 21 8a f8 e8 d0 f1 b8 c7 <0f> 0b 80 01 3e 21 8a f8 83 c4 14 8b 44 24 28...

...3f>] vc_allocate+0x8f/0x150 [<c02083d8>] con_open+0x48/0xb0 [<c01f8b60>] tty_open+0x1b0/0x330 [<c016d3f3>] chrdev_open+0xb3/0x1a0 [<c016271b>] dentry_open+0x19b/0x210 [<c016257a>] filp_open+0x5a/0x60 [<c0162996>] sys_open+0x46/0x90 [<c0109a81>] syscall_call+0x7/0xb Code: 05 01 d0 ff 88 e0 00 00 00 83 3a 02 0f 84 c6 00 00 00 8b 15 6c 9b 35 c0 89 53 28 8b 04 bd c0 ac 35 c0 85 c0 74 05 89 43 28 89 c2 <8b> 32 85 f6 74 28 89 34 24 e8 af 68 f3 ff 85 c0 0f 84 a7 00 00 <0>Kernel pa...

...3f>] vc_allocate+0x8f/0x150 [<c02083d8>] con_open+0x48/0xb0 [<c01f8b60>] tty_open+0x1b0/0x330 [<c016d3f3>] chrdev_open+0xb3/0x1a0 [<c016271b>] dentry_open+0x19b/0x210 [<c016257a>] filp_open+0x5a/0x60 [<c0162996>] sys_open+0x46/0x90 [<c0109a81>] syscall_call+0x7/0xb Code: 05 01 d0 ff 88 e0 00 00 00 83 3a 02 0f 84 c6 00 00 00 8b 15 6c 9b 35 c0 89 53 28 8b 04 bd c0 ac 35 c0 85 c0 74 05 89 43 28 89 c2 <8b> 32 85 f6 74 28 89 34 24 e8 af 68 f3 ff 85 c0 0f 84 a7 00 00 <0>Kernel pa...

.../0x190 [<ffffffff811bf702>] do_dentry_open.isra.18+0x1f2/0x320 [<ffffffff811bf8a1>] vfs_open+0x41/0x50 [<ffffffff811cd056>] do_last.isra.59+0x266/0xf20 [<ffffffff811d0329>] path_openat+0x89/0x5a0 [<ffffffff811d18ae>] do_filp_open+0x3e/0xa0 [<ffffffff811c0eee>] do_sys_open+0x12e/0x230 [<ffffffff811c1009>] SyS_open+0x19/0x20 [<ffffffff81861252>] system_call_fastpath+0x12/0x17 [<ffffffffffffffff>] 0xffffffffffffffff That Xorg's log is rather boring with 55 lines ending with: [ 835.442] (==) ModulePath set to "/usr/lib64/xorg/modules"...

...======================================================== --- linux-2.6.15.orig/init/initramfs.c +++ linux-2.6.15/init/initramfs.c @@ -249,6 +249,7 @@ static int __init do_name(void) if (dry_run) return 0; if (S_ISREG(mode)) { + sys_unlink(collected); if (maybe_link() >= 0) { wfd = sys_open(collected, O_WRONLY|O_CREAT, mode); if (wfd >= 0) { @@ -263,6 +264,7 @@ static int __init do_name(void) sys_chmod(collected, mode); } else if (S_ISBLK(mode) || S_ISCHR(mode) || S_ISFIFO(mode) || S_ISSOCK(mode)) { + sys_unlink(collected); if (maybe_link() == 0) { sys_mknod(...

...me, p, flags, root_mount_data); ... The value of "name" is "/dev/root" before this statement. After this "err" is -6 ("No such device or address"). The next lines are: ... /* * Allow the user to distinguish between failed sys_open * and bad superblock on root device. */ __bdevname(ROOT_DEV, b); printk("VFS: Cannot open root device \"%s\" or %s\n", root_device_name, b); printk("Pleas...