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963ec27a10
linux/net
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Song Liu 963ec27a10 bpf: fix raw_tp test run in preempt kernel 
In preempt kernel, BPF_PROG_TEST_RUN on raw_tp triggers:

[   35.874974] BUG: using smp_processor_id() in preemptible [00000000]
code: new_name/87
[   35.893983] caller is bpf_prog_test_run_raw_tp+0xd4/0x1b0
[   35.900124] CPU: 1 PID: 87 Comm: new_name Not tainted 5.9.0-rc6-g615bd02bf #1
[   35.907358] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996),
BIOS 1.10.2-1ubuntu1 04/01/2014
[   35.916941] Call Trace:
[   35.919660]  dump_stack+0x77/0x9b
[   35.923273]  check_preemption_disabled+0xb4/0xc0
[   35.928376]  bpf_prog_test_run_raw_tp+0xd4/0x1b0
[   35.933872]  ? selinux_bpf+0xd/0x70
[   35.937532]  __do_sys_bpf+0x6bb/0x21e0
[   35.941570]  ? find_held_lock+0x2d/0x90
[   35.945687]  ? vfs_write+0x150/0x220
[   35.949586]  do_syscall_64+0x2d/0x40
[   35.953443]  entry_SYSCALL_64_after_hwframe+0x44/0xa9

Fix this by calling migrate_disable() before smp_processor_id().

Fixes: 1b4d60ec16 ("bpf: Enable BPF_PROG_TEST_RUN for raw_tracepoint")
Reported-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
2020-09-30 08:34:08 -07:00
..
6lowpan treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
9p treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
802
8021q treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
appletalk appletalk: Fix atalk_proc_init() return path 2020-08-03 15:48:32 -07:00
atm net: atm: delete duplicated words 2020-09-18 14:12:43 -07:00
ax25 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-07-25 17:49:04 -07:00
batman-adv net: bridge: mcast: rename br_ip's u member to dst 2020-09-23 13:24:34 -07:00
bluetooth net: bluetooth: delete duplicated words 2020-09-18 14:12:43 -07:00
bpf bpf: fix raw_tp test run in preempt kernel 2020-09-30 08:34:08 -07:00
bpfilter bpf: Add kernel module with user mode driver that populates bpffs. 2020-08-20 16:02:36 +02:00
bridge net: bridge: mcast: when forwarding handle filter mode and blocked flag 2020-09-23 13:24:35 -07:00
caif caif: Remove duplicate macro SRVL_CTRL_PKT_SIZE 2020-09-05 15:57:05 -07:00
can can: remove "WITH Linux-syscall-note" from SPDX tag of C files 2020-09-21 10:13:16 +02:00
ceph treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
core bpf: sockmap: Enable map_update_elem from bpf_iter 2020-09-28 16:40:46 -07:00
dcb net: DCB: Validate DCB_ATTR_DCB_BUFFER argument 2020-09-10 15:09:08 -07:00
dccp ip: pass tos into ip_build_and_send_pkt() 2020-09-10 13:15:40 -07:00
decnet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
dns_resolver
dsa Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
ethernet
ethtool Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
hsr Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
ieee802154 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
ife
ipv4 bpf: Change bpf_sk_storage_*() to accept ARG_PTR_TO_BTF_ID_SOCK_COMMON 2020-09-25 13:58:01 -07:00
ipv6 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
iucv treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
kcm net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
key Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-08-02 01:02:12 -07:00
l2tp l2tp: fix up inconsistent rx/tx statistics 2020-09-18 14:36:54 -07:00
l3mdev net: Fix some comments 2020-08-27 07:55:59 -07:00
lapb treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
llc net: pass a sockptr_t into ->setsockopt 2020-07-24 15:41:54 -07:00
mac80211 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
mac802154 Merge tag 'ieee802154-for-davem-2020-09-08' of git://git.kernel.org/pub/scm/linux/kernel/git/sschmidt/wpan 2020-09-08 20:12:58 -07:00
mpls treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
mptcp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
ncsi treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
netfilter Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
netlabel netlabel: Fix some kernel-doc warnings 2020-09-08 20:04:27 -07:00
netlink netlink: add spaces around '&' in netlink_recv/sendmsg() 2020-09-17 16:53:47 -07:00
netrom treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
nfc NFC: digital: Remove two unused macroes 2020-09-05 16:01:52 -07:00
nsh treewide: replace '---help---' in Kconfig files with 'help' 2020-06-14 01:57:21 +09:00
openvswitch net: openswitch: reuse the helper variable to improve the code readablity 2020-09-18 14:24:08 -07:00
packet net/packet: Fix a comment about network_header 2020-09-19 16:40:48 -07:00
phonet treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
psample
qrtr net: qrtr: check skb_put_padto() return value 2020-09-09 11:04:39 -07:00
rds RDS: drop double zeroing 2020-09-20 19:09:11 -07:00
rfkill
rose treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
rxrpc rxrpc: Fix an overget of the conn bundle when setting up a client conn 2020-09-14 16:18:59 +01:00
sched Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
sctp Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
smc net/smc: fix double kfree in smc_listen_work() 2020-09-17 18:03:56 -07:00
strparser
sunrpc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
switchdev net: switchdev: kerneldoc fixes 2020-07-13 17:20:40 -07:00
tipc Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
tls net/tls: Implement getsockopt SOL_TLS TLS_RX 2020-09-01 11:47:12 -07:00
unix net: unix: remove redundant assignment to variable 'err' 2020-09-21 14:51:37 -07:00
vmw_vsock vsock: fix potential null pointer dereference in vsock_poll() 2020-08-12 12:56:06 -07:00
wimax
wireless Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-22 16:45:34 -07:00
x25 treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
xdp xsk: Fix a documentation mistake in xsk_queue.h 2020-09-29 11:25:56 -07:00
xfrm treewide: Use fallthrough pseudo-keyword 2020-08-23 17:36:59 -05:00
compat.c net/scm: Fix typo in SCM_RIGHTS compat refactoring 2020-08-07 12:43:25 -07:00
devres.c net: devres: rename the release callback of devm_register_netdev() 2020-06-30 15:57:34 -07:00
Kconfig net: ethtool: Remove PHYLIB direct dependency 2020-07-07 15:41:05 -07:00
Makefile
socket.c Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net 2020-09-04 21:28:59 -07:00
sysctl_net.c