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linux/fs/bad_inode.c

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Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] Make most file operations structs in fs/ const This is a conversion to make the various file_operations structs in fs/ const. Basically a regexp job, with a few manual fixups The goal is both to increase correctness (harder to accidentally write to shared datastructures) and reducing the false sharing of cachelines with things that get dirty in .data (while .rodata is nicely read only and thus cache clean) Signed-off-by: Arjan van de Ven <arjan@infradead.org> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2006-03-28 01:56:42 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
[PATCH] mark struct inode_operations const 1 Many struct inode_operations in the kernel can be "const". Marking them const moves these to the .rodata section, which avoids false sharing with potential dirty data. In addition it'll catch accidental writes at compile time to these shared resources. Signed-off-by: Arjan van de Ven <arjan@linux.intel.com> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2007-02-12 00:55:38 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00
[PATCH] fix memory corruption from misinterpreted bad_inode_ops return values CVE-2006-5753 is for a case where an inode can be marked bad, switching the ops to bad_inode_ops, which are all connected as: static int return_EIO(void) { return -EIO; } #define EIO_ERROR ((void *) (return_EIO)) static struct inode_operations bad_inode_ops = { .create = bad_inode_create ...etc... The problem here is that the void cast causes return types to not be promoted, and for ops such as listxattr which expect more than 32 bits of return value, the 32-bit -EIO is interpreted as a large positive 64-bit number, i.e. 0x00000000fffffffa instead of 0xfffffffa. This goes particularly badly when the return value is taken as a number of bytes to copy into, say, a user's buffer for example... I originally had coded up the fix by creating a return_EIO_<TYPE> macro for each return type, like this: static int return_EIO_int(void) { return -EIO; } #define EIO_ERROR_INT ((void *) (return_EIO_int)) static struct inode_operations bad_inode_ops = { .create = EIO_ERROR_INT, ...etc... but Al felt that it was probably better to create an EIO-returner for each actual op signature. Since so few ops share a signature, I just went ahead & created an EIO function for each individual file & inode op that returns a value. Signed-off-by: Eric Sandeen <sandeen@redhat.com> Cc: Al Viro <viro@zeniv.linux.org.uk> Signed-off-by: Andrew Morton <akpm@osdl.org> Signed-off-by: Linus Torvalds <torvalds@osdl.org>
2007-01-05 16:36:36 -08:00
Linux-2.6.12-rc2 Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
2005-04-16 15:20:36 -07:00