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| author | Juergen Gross <[email protected]> | 2021-04-23 05:40:38 +0000 |
|---|---|---|
| committer | Juergen Gross <[email protected]> | 2021-05-10 07:32:00 +0000 |
| commit | 970655aa9b42461f8394e4457307005bdeee14d9 (patch) | |
| tree | 3181bb4b00415833f5f2d3c39548bbd3189910d2 /drivers/net/xen-netback/interface.c | |
| parent | Linux 5.13-rc1 (diff) | |
| download | kernel-970655aa9b42461f8394e4457307005bdeee14d9.tar.gz kernel-970655aa9b42461f8394e4457307005bdeee14d9.zip | |
xen/gntdev: fix gntdev_mmap() error exit path
Commit d3eeb1d77c5d0af ("xen/gntdev: use mmu_interval_notifier_insert")
introduced an error in gntdev_mmap(): in case the call of
mmu_interval_notifier_insert_locked() fails the exit path should not
call mmu_interval_notifier_remove(), as this might result in NULL
dereferences.
One reason for failure is e.g. a signal pending for the running
process.
Fixes: d3eeb1d77c5d0af ("xen/gntdev: use mmu_interval_notifier_insert")
Cc: [email protected]
Reported-by: Marek Marczykowski-Górecki <[email protected]>
Tested-by: Marek Marczykowski-Górecki <[email protected]>
Signed-off-by: Juergen Gross <[email protected]>
Reviewed-by: Luca Fancellu <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Juergen Gross <[email protected]>
Diffstat (limited to 'drivers/net/xen-netback/interface.c')
0 files changed, 0 insertions, 0 deletions