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| author | Eric Dumazet <[email protected]> | 2025-06-11 08:35:01 +0000 |
|---|---|---|
| committer | Jakub Kicinski <[email protected]> | 2025-06-12 15:03:08 +0000 |
| commit | 7ca52541c05c832d32b112274f81a985101f9ba8 (patch) | |
| tree | 35c607f64f4d8096cda7eec0a87ccd4f1ac92434 /drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c | |
| parent | net: phy: phy_caps: Don't skip better duplex macth on non-exact match (diff) | |
| download | kernel-7ca52541c05c832d32b112274f81a985101f9ba8.tar.gz kernel-7ca52541c05c832d32b112274f81a985101f9ba8.zip | |
net_sched: sch_sfq: reject invalid perturb period
Gerrard Tai reported that SFQ perturb_period has no range check yet,
and this can be used to trigger a race condition fixed in a separate patch.
We want to make sure ctl->perturb_period * HZ will not overflow
and is positive.
Tested:
tc qd add dev lo root sfq perturb -10 # negative value : error
Error: sch_sfq: invalid perturb period.
tc qd add dev lo root sfq perturb 1000000000 # too big : error
Error: sch_sfq: invalid perturb period.
tc qd add dev lo root sfq perturb 2000000 # acceptable value
tc -s -d qd sh dev lo
qdisc sfq 8005: root refcnt 2 limit 127p quantum 64Kb depth 127 flows 128 divisor 1024 perturb 2000000sec
Sent 0 bytes 0 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Reported-by: Gerrard Tai <[email protected]>
Signed-off-by: Eric Dumazet <[email protected]>
Cc: [email protected]
Link: https://patch.msgid.link/[email protected]
Signed-off-by: Jakub Kicinski <[email protected]>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/amdgpu_gfx.c')
0 files changed, 0 insertions, 0 deletions