4.19-stable review patch. If anyone has any objections, please let me know.
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From: Ganesh Goudar ganeshgr@chelsio.com
[ Upstream commit c6ec179a0082e2e76e3a72050c2b99d3d0f3da3f ]
create_ctx can be called from atomic context, hence use GFP_ATOMIC instead of GFP_KERNEL.
[ 395.962599] BUG: sleeping function called from invalid context at mm/slab.h:421 [ 395.979896] in_atomic(): 1, irqs_disabled(): 0, pid: 16254, name: openssl [ 395.996564] 2 locks held by openssl/16254: [ 396.010492] #0: 00000000347acb52 (sk_lock-AF_INET){+.+.}, at: do_tcp_setsockopt.isra.44+0x13b/0x9a0 [ 396.029838] #1: 000000006c9552b5 (device_spinlock){+...}, at: tls_init+0x1d/0x280 [ 396.047675] CPU: 5 PID: 16254 Comm: openssl Tainted: G O 4.20.0-rc6+ #25 [ 396.066019] Hardware name: Supermicro X10SRA-F/X10SRA-F, BIOS 2.0c 09/25/2017 [ 396.083537] Call Trace: [ 396.096265] dump_stack+0x5e/0x8b [ 396.109876] ___might_sleep+0x216/0x250 [ 396.123940] kmem_cache_alloc_trace+0x1b0/0x240 [ 396.138800] create_ctx+0x1f/0x60 [ 396.152504] tls_init+0xbd/0x280 [ 396.166135] tcp_set_ulp+0x191/0x2d0 [ 396.180035] ? tcp_set_ulp+0x2c/0x2d0 [ 396.193960] do_tcp_setsockopt.isra.44+0x148/0x9a0 [ 396.209013] __sys_setsockopt+0x7c/0xe0 [ 396.223054] __x64_sys_setsockopt+0x20/0x30 [ 396.237378] do_syscall_64+0x4a/0x180 [ 396.251200] entry_SYSCALL_64_after_hwframe+0x49/0xbe
Fixes: df9d4a178022 ("net/tls: sleeping function from invalid context") Signed-off-by: Ganesh Goudar ganeshgr@chelsio.com Signed-off-by: David S. Miller davem@davemloft.net Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org --- net/tls/tls_main.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/net/tls/tls_main.c +++ b/net/tls/tls_main.c @@ -550,7 +550,7 @@ static struct tls_context *create_ctx(st struct inet_connection_sock *icsk = inet_csk(sk); struct tls_context *ctx;
- ctx = kzalloc(sizeof(*ctx), GFP_KERNEL); + ctx = kzalloc(sizeof(*ctx), GFP_ATOMIC); if (!ctx) return NULL;