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Eric Dumazet ced61418f4 net: fix net_dev_start_xmit trace event vs skb_transport_offset() 
[ Upstream commit f88fcb1d7d961b4b402d675109726f94db87571c ]

After blamed commit, we must be more careful about using
skb_transport_offset(), as reminded us by syzbot:

WARNING: CPU: 0 PID: 10 at include/linux/skbuff.h:2868 skb_transport_offset include/linux/skbuff.h:2977 [inline]
WARNING: CPU: 0 PID: 10 at include/linux/skbuff.h:2868 perf_trace_net_dev_start_xmit+0x89a/0xce0 include/trace/events/net.h:14
Modules linked in:
CPU: 0 PID: 10 Comm: kworker/u4:1 Not tainted 6.1.30-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:skb_transport_header include/linux/skbuff.h:2868 [inline]
RIP: 0010:skb_transport_offset include/linux/skbuff.h:2977 [inline]
RIP: 0010:perf_trace_net_dev_start_xmit+0x89a/0xce0 include/trace/events/net.h:14
Code: 8b 04 25 28 00 00 00 48 3b 84 24 c0 00 00 00 0f 85 4e 04 00 00 48 8d 65 d8 5b 41 5c 41 5d 41 5e 41 5f 5d c3 cc e8 56 22 01 fd <0f> 0b e9 f6 fc ff ff 89 f9 80 e1 07 80 c1 03 38 c1 0f 8c 86 f9 ff
RSP: 0018:ffffc900002bf700 EFLAGS: 00010293
RAX: ffffffff8485d8ca RBX: 000000000000ffff RCX: ffff888100914280
RDX: 0000000000000000 RSI: 000000000000ffff RDI: 000000000000ffff
RBP: ffffc900002bf818 R08: ffffffff8485d5b6 R09: fffffbfff0f8fb5e
R10: 0000000000000000 R11: dffffc0000000001 R12: 1ffff110217d8f67
R13: ffff88810bec7b3a R14: dffffc0000000000 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f96cf6d52f0 CR3: 000000012224c000 CR4: 0000000000350ef0
Call Trace:
<TASK>
[<ffffffff84715e35>] trace_net_dev_start_xmit include/trace/events/net.h:14 [inline]
[<ffffffff84715e35>] xmit_one net/core/dev.c:3643 [inline]
[<ffffffff84715e35>] dev_hard_start_xmit+0x705/0x980 net/core/dev.c:3660
[<ffffffff8471a232>] __dev_queue_xmit+0x16b2/0x3370 net/core/dev.c:4324
[<ffffffff85416493>] dev_queue_xmit include/linux/netdevice.h:3030 [inline]
[<ffffffff85416493>] batadv_send_skb_packet+0x3f3/0x680 net/batman-adv/send.c:108
[<ffffffff85416744>] batadv_send_broadcast_skb+0x24/0x30 net/batman-adv/send.c:127
[<ffffffff853bc52a>] batadv_iv_ogm_send_to_if net/batman-adv/bat_iv_ogm.c:393 [inline]
[<ffffffff853bc52a>] batadv_iv_ogm_emit net/batman-adv/bat_iv_ogm.c:421 [inline]
[<ffffffff853bc52a>] batadv_iv_send_outstanding_bat_ogm_packet+0x69a/0x840 net/batman-adv/bat_iv_ogm.c:1701
[<ffffffff8151023c>] process_one_work+0x8ac/0x1170 kernel/workqueue.c:2289
[<ffffffff81511938>] worker_thread+0xaa8/0x12d0 kernel/workqueue.c:2436

Fixes: 66e4c8d950 ("net: warn if transport header was not set")
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>
2023-07-19 16:22:05 +02:00
..
acpi ACPI: sleep: Avoid breaking S3 wakeup due to might_sleep() 2023-06-28 11:12:22 +02:00
asm-generic asm-generic/io.h: suppress endianness warnings for readq() and writeq() 2023-05-11 23:02:58 +09:00
clocksource
crypto crypto: kpp - Add helper to set reqsize 2023-07-19 16:21:42 +02:00
drm drm/bridge: Introduce pre_enable_prev_first to alter bridge init order 2023-07-19 16:21:23 +02:00
dt-bindings dt-bindings: clocks: imx8mp: Add ID for usb suspend clock 2022-12-31 13:33:09 +01:00
keys
kunit kunit: fix kunit_test_init_section_suites(...) 2023-02-09 11:28:08 +01:00
kvm KVM: arm64: PMU: Align chained counter implementation with architecture pseudocode 2023-04-13 16:55:17 +02:00
linux net: add a couple of helpers for iph tot_len 2023-07-19 16:22:00 +02:00
math-emu
media media: dvb-core: Fix use-after-free due to race at dvb_register_device() 2023-06-09 10:34:12 +02:00
memory memory: renesas-rpc-if: Split-off private data from struct rpcif 2023-03-11 13:55:17 +01:00
misc
net Bluetooth: MGMT: Fix marking SCAN_RSP as not connectable 2023-07-19 16:22:02 +02:00
pcmcia
ras
rdma RDMA/cma: Always set static rate to 0 for RoCE 2023-06-21 16:00:59 +02:00
rv
scsi scsi: libsas: Add sas_ata_device_link_abort() 2023-05-11 23:03:20 +09:00
soc net: mscc: ocelot: don't keep PTP configuration of all ports in single structure 2023-07-19 16:22:01 +02:00
sound ASoC: Intel: avs: Account for UID of ACPI device 2023-06-21 16:00:53 +02:00
target scsi: target: Fix multiple LUN_RESET handling 2023-05-11 23:03:19 +09:00
trace net: fix net_dev_start_xmit trace event vs skb_transport_offset() 2023-07-19 16:22:05 +02:00
uapi media: videodev2.h: Fix struct v4l2_input tuner index comment 2023-07-19 16:21:50 +02:00
ufs scsi: ufs: exynos: Fix DMA alignment for PAGE_SIZE != 4096 2023-03-10 09:33:15 +01:00
vdso
video
xen ACPI: processor: Fix evaluating _PDC method when running as Xen dom0 2023-05-11 23:03:11 +09:00