Eric Dumazet ef1148d448 ipv6: remove nexthop_fib6_nh_bh() ... After blamed commit, nexthop_fib6_nh_bh() and nexthop_fib6_nh() are the same. Delete nexthop_fib6_nh_bh(), and convert /proc/net/ipv6_route to standard rcu to avoid this splat: [ 5723.180080] WARNING: suspicious RCU usage [ 5723.180083] ----------------------------- [ 5723.180084] include/net/nexthop.h:516 suspicious rcu_dereference_check() usage! [ 5723.180086] other info that might help us debug this: [ 5723.180087] rcu_scheduler_active = 2, debug_locks = 1 [ 5723.180089] 2 locks held by cat/55856: [ 5723.180091] #0: ffff9440a582afa8 (&p->lock){+.+.}-{3:3}, at: seq_read_iter (fs/seq_file.c:188) [ 5723.180100] #1: ffffffffaac07040 (rcu_read_lock_bh){....}-{1:2}, at: rcu_lock_acquire (include/linux/rcupdate.h:326) [ 5723.180109] stack backtrace: [ 5723.180111] CPU: 14 PID: 55856 Comm: cat Tainted: G S I 6.3.0-dbx-DEV #528 [ 5723.180115] Call Trace: [ 5723.180117] <TASK> [ 5723.180119] dump_stack_lvl (lib/dump_stack.c:107) [ 5723.180124] dump_stack (lib/dump_stack.c:114) [ 5723.180126] lockdep_rcu_suspicious (include/linux/context_tracking.h:122) [ 5723.180132] ipv6_route_seq_show (include/net/nexthop.h:?) [ 5723.180135] ? ipv6_route_seq_next (net/ipv6/ip6_fib.c:2605) [ 5723.180140] seq_read_iter (fs/seq_file.c:272) [ 5723.180145] seq_read (fs/seq_file.c:163) [ 5723.180151] proc_reg_read (fs/proc/inode.c:316 fs/proc/inode.c:328) [ 5723.180155] vfs_read (fs/read_write.c:468) [ 5723.180160] ? up_read (kernel/locking/rwsem.c:1617) [ 5723.180164] ksys_read (fs/read_write.c:613) [ 5723.180168] __x64_sys_read (fs/read_write.c:621) [ 5723.180170] do_syscall_64 (arch/x86/entry/common.c:?) [ 5723.180174] entry_SYSCALL_64_after_hwframe (arch/x86/entry/entry_64.S:120) [ 5723.180177] RIP: 0033:0x7fa455677d2a Fixes: 09eed1192c ("neighbour: switch to standard rcu, instead of rcu_bh") Reported-by: syzbot <syzkaller@googlegroups.com> Signed-off-by: Eric Dumazet <edumazet@google.com> Reviewed-by: David Ahern <dsahern@kernel.org> Link: https://lore.kernel.org/r/20230510154646.370659-1-edumazet@google.com Signed-off-by: Jakub Kicinski <kuba@kernel.org>		2023-05-11 18:07:05 -07:00
..
acpi	Power management updates for 6.4-rc1	2023-04-25 18:44:10 -07:00
asm-generic	Locking changes in v6.4:	2023-05-05 12:56:55 -07:00
clocksource
crypto	This update includes the following changes:	2023-04-26 08:32:52 -07:00
drm	- Nick Piggin's "shoot lazy tlbs" series, to improve the peformance of	2023-04-27 19:42:02 -07:00
dt-bindings	- mailbox api: allow direct registration to a channel	2023-05-07 10:17:33 -07:00
keys
kunit
kvm	s390:	2023-05-01 12:06:20 -07:00
linux	Networking fixes for 6.4-rc2, including fixes from netfilter	2023-05-11 08:42:47 -05:00
math-emu
media
memory
misc
net	ipv6: remove nexthop_fib6_nh_bh()	2023-05-11 18:07:05 -07:00
pcmcia
ras
rdma
rv
scsi	Driver core changes for 6.4-rc1	2023-04-27 11:53:57 -07:00
soc	Nothing looks out of the ordinary in this batch of clk driver updates. There	2023-04-29 17:29:39 -07:00
sound
target
trace	NFSD 6.4 Release Notes	2023-04-29 11:04:14 -07:00
uapi	for-6.4/block-2023-05-06	2023-05-06 08:28:58 -07:00
ufs	SCSI misc on 20230426	2023-04-26 15:39:25 -07:00
vdso
video
xen