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| author | Vimal Agrawal <vimal.agrawal@sophos.com> | 2024-10-21 13:38:12 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-02-17 10:05:41 +0100 |
| commit | 8b4120b3e060e137eaa8dc76a1c40401088336e5 (patch) | |
| tree | ab4a84e4996b261068876307f4ce017549677bb7 /lib/dump_stack.c | |
| parent | 1cda594dfad51af05f47faeef9820a4f0475a9f4 (diff) | |
misc: misc_minor_alloc to use ida for all dynamic/misc dynamic minors
commit 6d04d2b554b14ae6c428a9c60b6c85f1e5c89f68 upstream.
misc_minor_alloc was allocating id using ida for minor only in case of
MISC_DYNAMIC_MINOR but misc_minor_free was always freeing ids
using ida_free causing a mismatch and following warn:
> > WARNING: CPU: 0 PID: 159 at lib/idr.c:525 ida_free+0x3e0/0x41f
> > ida_free called for id=127 which is not allocated.
> > <<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<<
...
> > [<60941eb4>] ida_free+0x3e0/0x41f
> > [<605ac993>] misc_minor_free+0x3e/0xbc
> > [<605acb82>] misc_deregister+0x171/0x1b3
misc_minor_alloc is changed to allocate id from ida for all minors
falling in the range of dynamic/ misc dynamic minors
Fixes: ab760791c0cf ("char: misc: Increase the maximum number of dynamic misc devices to 1048448")
Signed-off-by: Vimal Agrawal <vimal.agrawal@sophos.com>
Reviewed-by: Dirk VanDerMerwe <dirk.vandermerwe@sophos.com>
Cc: stable@vger.kernel.org
Link: https://lore.kernel.org/r/20241021133812.23703-1-vimal.agrawal@sophos.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'lib/dump_stack.c')
0 files changed, 0 insertions, 0 deletions