https://github.com/torvalds/linux
Revision c6ec179a0082e2e76e3a72050c2b99d3d0f3da3f authored by Ganesh Goudar on 19 December 2018, 11:48:22 UTC, committed by David S. Miller on 20 December 2018, 00:28:50 UTC
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>
1 parent 1875a9a
Tip revision: c6ec179a0082e2e76e3a72050c2b99d3d0f3da3f authored by Ganesh Goudar on 19 December 2018, 11:48:22 UTC
net/tls: allocate tls context using GFP_ATOMIC
net/tls: allocate tls context using GFP_ATOMIC
Tip revision: c6ec179
clz_ctz.c
/*
* lib/clz_ctz.c
*
* Copyright (C) 2013 Chanho Min <chanho.min@lge.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
* The functions in this file aren't called directly, but are required by
* GCC builtins such as __builtin_ctz, and therefore they can't be removed
* despite appearing unreferenced in kernel source.
*
* __c[lt]z[sd]i2 can be overridden by linking arch-specific versions.
*/
#include <linux/export.h>
#include <linux/kernel.h>
int __weak __ctzsi2(int val);
int __weak __ctzsi2(int val)
{
return __ffs(val);
}
EXPORT_SYMBOL(__ctzsi2);
int __weak __clzsi2(int val);
int __weak __clzsi2(int val)
{
return 32 - fls(val);
}
EXPORT_SYMBOL(__clzsi2);
int __weak __clzdi2(long val);
int __weak __ctzdi2(long val);
#if BITS_PER_LONG == 32
int __weak __clzdi2(long val)
{
return 32 - fls((int)val);
}
EXPORT_SYMBOL(__clzdi2);
int __weak __ctzdi2(long val)
{
return __ffs((u32)val);
}
EXPORT_SYMBOL(__ctzdi2);
#elif BITS_PER_LONG == 64
int __weak __clzdi2(long val)
{
return 64 - fls64((u64)val);
}
EXPORT_SYMBOL(__clzdi2);
int __weak __ctzdi2(long val)
{
return __ffs64((u64)val);
}
EXPORT_SYMBOL(__ctzdi2);
#else
#error BITS_PER_LONG not 32 or 64
#endif
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