diff options
| author | André Almeida <andrealmeid@igalia.com> | 2024-09-02 19:55:03 -0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2024-12-05 14:02:01 +0100 |
| commit | 89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3 (patch) | |
| tree | 2c8411a88d8f60b6f27661ed8e1b3171537f2e7c /rust/kernel/workqueue.rs | |
| parent | f84c5ef6ca23cc2f72f3b830d74f67944684bb05 (diff) | |
| download | linux-89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3.tar.gz linux-89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3.tar.bz2 linux-89933f8ab3b4cad5ac14ea56a39947d1ffe7d0e3.zip | |
unicode: Fix utf8_load() error path
[ Upstream commit 156bb2c569cd869583c593d27a5bd69e7b2a4264 ]
utf8_load() requests the symbol "utf8_data_table" and then checks if the
requested UTF-8 version is supported. If it's unsupported, it tries to
put the data table using symbol_put(). If an unsupported version is
requested, symbol_put() fails like this:
kernel BUG at kernel/module/main.c:786!
RIP: 0010:__symbol_put+0x93/0xb0
Call Trace:
<TASK>
? __die_body.cold+0x19/0x27
? die+0x2e/0x50
? do_trap+0xca/0x110
? do_error_trap+0x65/0x80
? __symbol_put+0x93/0xb0
? exc_invalid_op+0x51/0x70
? __symbol_put+0x93/0xb0
? asm_exc_invalid_op+0x1a/0x20
? __pfx_cmp_name+0x10/0x10
? __symbol_put+0x93/0xb0
? __symbol_put+0x62/0xb0
utf8_load+0xf8/0x150
That happens because symbol_put() expects the unique string that
identify the symbol, instead of a pointer to the loaded symbol. Fix that
by using such string.
Fixes: 2b3d04787012 ("unicode: Add utf8-data module")
Signed-off-by: André Almeida <andrealmeid@igalia.com>
Reviewed-by: Theodore Ts'o <tytso@mit.edu>
Link: https://lore.kernel.org/r/20240902225511.757831-2-andrealmeid@igalia.com
Signed-off-by: Gabriel Krisman Bertazi <krisman@suse.de>
Signed-off-by: Sasha Levin <sashal@kernel.org>
Diffstat (limited to 'rust/kernel/workqueue.rs')
0 files changed, 0 insertions, 0 deletions