Eric Dumazet 8c01c620ae fq_codel: reject silly quantum parameters ... [ Upstream commit c7c5e6ff533fe1f9afef7d2fa46678987a1335a7 ] syzbot found that forcing a big quantum attribute would crash hosts fast, essentially using this: tc qd replace dev eth0 root fq_codel quantum 4294967295 This is because fq_codel_dequeue() would have to loop ~2^31 times in : if (flow->deficit <= 0) { flow->deficit += q->quantum; list_move_tail(&flow->flowchain, &q->old_flows); goto begin; } SFQ max quantum is 2^19 (half a megabyte) Lets adopt a max quantum of one megabyte for FQ_CODEL. Fixes: 4b549a2ef4 ("fq_codel: Fair Queue Codel AQM") Signed-off-by: Eric Dumazet <edumazet@google.com> Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: David S. Miller <davem@davemloft.net> Signed-off-by: Sasha Levin <sashal@kernel.org>		2021-09-22 12:28:05 +02:00
..
asm-generic	mm/madvise: introduce process_madvise() syscall: an external memory hinting API	2020-10-18 09:27:10 -07:00
drm	drm/fourcc: fix Amlogic format modifier masks	2021-03-04 11:37:38 +01:00
linux	fq_codel: reject silly quantum parameters	2021-09-22 12:28:05 +02:00
misc	habanalabs: Add an option to map CB to device MMU	2020-09-22 18:49:54 +03:00
mtd	MTD: mtd-abi.h: drop a duplicated word	2020-08-02 23:00:10 +02:00
rdma	RDMA/vmw_pvrdma: Fix network_hdr_type reported in WC	2021-01-30 13:55:18 +01:00
scsi	scsi: qla2xxx: Change in PUREX to handle FPIN ELS requests	2020-07-01 22:24:16 -04:00
sound	ALSA: fix kernel-doc markups	2020-10-26 15:26:31 +01:00
video
xen	xen/gntdev: gntdev.h: drop a duplicated word	2020-08-03 07:46:42 +02:00
Kbuild