Repository files (latest commit first)

Filename	Latest commit message	Latest commit date
Eric Dumazet bcacdf4deb xfrm: fix a data-race in xfrm_gen_index() ... commit 3e4bc23926b83c3c67e5f61ae8571602754131a6 upstream. xfrm_gen_index() mutual exclusion uses net->xfrm.xfrm_policy_lock. This means we must use a per-netns idx_generator variable, instead of a static one. Alternative would be to use an atomic variable. syzbot reported: BUG: KCSAN: data-race in xfrm_sk_policy_insert / xfrm_sk_policy_insert write to 0xffffffff87005938 of 4 bytes by task 29466 on cpu 0: xfrm_gen_index net/xfrm/xfrm_policy.c:1385 [inline] xfrm_sk_policy_insert+0x262/0x640 net/xfrm/xfrm_policy.c:2347 xfrm_user_policy+0x413/0x540 net/xfrm/xfrm_state.c:2639 do_ipv6_setsockopt+0x1317/0x2ce0 net/ipv6/ipv6_sockglue.c:943 ipv6_setsockopt+0x57/0x130 net/ipv6/ipv6_sockglue.c:1012 rawv6_setsockopt+0x21e/0x410 net/ipv6/raw.c:1054 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3697 __sys_setsockopt+0x1c9/0x230 net/socket.c:2263 __do_sys_setsockopt net/socket.c:2274 [inline] __se_sys_setsockopt net/socket.c:2271 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2271 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd read to 0xffffffff87005938 of 4 bytes by task 29460 on cpu 1: xfrm_sk_policy_insert+0x13e/0x640 xfrm_user_policy+0x413/0x540 net/xfrm/xfrm_state.c:2639 do_ipv6_setsockopt+0x1317/0x2ce0 net/ipv6/ipv6_sockglue.c:943 ipv6_setsockopt+0x57/0x130 net/ipv6/ipv6_sockglue.c:1012 rawv6_setsockopt+0x21e/0x410 net/ipv6/raw.c:1054 sock_common_setsockopt+0x61/0x70 net/core/sock.c:3697 __sys_setsockopt+0x1c9/0x230 net/socket.c:2263 __do_sys_setsockopt net/socket.c:2274 [inline] __se_sys_setsockopt net/socket.c:2271 [inline] __x64_sys_setsockopt+0x66/0x80 net/socket.c:2271 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd value changed: 0x00006ad8 -> 0x00006b18 Reported by Kernel Concurrency Sanitizer on: CPU: 1 PID: 29460 Comm: syz-executor.1 Not tainted 6.5.0-rc5-syzkaller-00243-g9106536c1aa3 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/26/2023 Fixes: 1121994c80 ("netns xfrm: policy insertion in netns") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Cc: Steffen Klassert <steffen.klassert@secunet.com> Cc: Herbert Xu <herbert@gondor.apana.org.au> Acked-by: Herbert Xu <herbert@gondor.apana.org.au> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>		2023-10-25 11:53:21 +02:00
..
acpi
asm-generic	word-at-a-time: use the same return type for has_zero regardless of endianness	2023-08-11 11:53:54 +02:00
clocksource
crypto
drm	drm/display/dp: Fix the DP DSC Receiver cap size	2023-08-30 16:27:26 +02:00
dt-bindings
keys
kvm
linux	dev_forward_skb: do not scrub skb mark within the same name space	2023-10-25 11:53:20 +02:00
math-emu
media	media: v4l2-mem2mem: add lock to protect parameter num_rdy	2023-08-30 16:27:10 +02:00
misc
net	xfrm: fix a data-race in xfrm_gen_index()	2023-10-25 11:53:21 +02:00
pcmcia
ras
rdma
scsi	scsi: core: Use 32-bit hostnum in scsi_host_lookup()	2023-09-23 10:59:51 +02:00
soc	firmware: raspberrypi: Introduce devm_rpi_firmware_get()	2023-05-17 11:35:52 +02:00
sound	ALSA: pcm: Set per-card upper limit of PCM buffer allocations	2023-08-30 16:27:22 +02:00
target
trace	PM-runtime: add tracepoints for usage_count changes	2023-08-30 16:27:12 +02:00
uapi	bpf: Clarify error expectations from bpf_clone_redirect	2023-10-10 21:46:40 +02:00
vdso
video
xen	dma-mapping: drop the dev argument to arch_sync_dma_for_*	2023-04-05 11:16:43 +02:00