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Date: Sat, 22 Oct 2022 18:20:14 +0800
From: kernel test robot <lkp@...el.com>
To: katrinzhou <katrinzhou@...cent.com>
Cc: kbuild-all@...ts.01.org, linux-kernel@...r.kernel.org,
Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
Eric Dumazet <edumazet@...gle.com>,
David Ahern <dsahern@...nel.org>,
Jakub Kicinski <kuba@...nel.org>
Subject: [linux-stable-rc:linux-4.19.y 3257/4191] net/ipv6/sit.c:349: Error:
unrecognized opcode `csrs sstatus,a4'
tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y
head: 4ec4267bf1664d39d405503898b86aa40e8a9219
commit: 2e837e1d22dbdc4fb7cd2c3fa7d57d913b2ab9e8 [3257/4191] ipv6/sit: fix ipip6_tunnel_get_prl return value
config: riscv-randconfig-c023-20221019
compiler: riscv64-linux-gcc (GCC) 12.1.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=2e837e1d22dbdc4fb7cd2c3fa7d57d913b2ab9e8
git remote add linux-stable-rc https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git
git fetch --no-tags linux-stable-rc linux-4.19.y
git checkout 2e837e1d22dbdc4fb7cd2c3fa7d57d913b2ab9e8
# save the config file
mkdir build_dir && cp config build_dir/.config
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-12.1.0 make.cross W=1 O=build_dir ARCH=riscv SHELL=/bin/bash net/ipv6/
If you fix the issue, kindly add following tag where applicable
| Reported-by: kernel test robot <lkp@...el.com>
All errors (new ones prefixed by >>):
net/ipv6/sit.c: Assembler messages:
>> net/ipv6/sit.c:349: Error: unrecognized opcode `csrs sstatus,a4'
>> net/ipv6/sit.c:349: Error: unrecognized opcode `csrc sstatus,a4'
arch/riscv/include/asm/irqflags.h:42: Error: unrecognized opcode `csrrc a5,sstatus,2'
arch/riscv/include/asm/irqflags.h:60: Error: unrecognized opcode `csrs sstatus,a5'
arch/riscv/include/asm/irqflags.h:42: Error: unrecognized opcode `csrrc a5,sstatus,2'
arch/riscv/include/asm/irqflags.h:60: Error: unrecognized opcode `csrs sstatus,a5'
vim +349 net/ipv6/sit.c
fadf6bf0606913 Templin, Fred L 2008-03-11 295
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 296 static int ipip6_tunnel_get_prl(struct ip_tunnel *t,
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 297 struct ip_tunnel_prl __user *a)
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 298 {
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 299 struct ip_tunnel_prl kprl, *kp;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 300 struct ip_tunnel_prl_entry *prl;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 301 unsigned int cmax, c = 0, ca, len;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 302 int ret = 0;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 303
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 304 if (copy_from_user(&kprl, a, sizeof(kprl)))
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 305 return -EFAULT;
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 306 cmax = kprl.datalen / sizeof(kprl);
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 307 if (cmax > 1 && kprl.addr != htonl(INADDR_ANY))
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 308 cmax = 1;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 309
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 310 /* For simple GET or for root users,
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 311 * we try harder to allocate.
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 312 */
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 313 kp = (cmax <= 1 || capable(CAP_NET_ADMIN)) ?
0ccc22f425e56c WANG Cong 2017-06-22 314 kcalloc(cmax, sizeof(*kp), GFP_KERNEL | __GFP_NOWARN) :
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 315 NULL;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 316
c4829dc5ce1ce5 kernel test robot 2021-03-27 317 ca = min(t->prl_count, cmax);
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 318
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 319 if (!kp) {
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 320 /* We don't try hard to allocate much memory for
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 321 * non-root users.
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 322 * For root users, retry allocating enough memory for
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 323 * the answer.
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 324 */
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 325 kp = kcalloc(ca, sizeof(*kp), GFP_ATOMIC);
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 326 if (!kp) {
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 327 ret = -ENOMEM;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 328 goto out;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 329 }
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 330 }
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 331
2e837e1d22dbdc katrinzhou 2022-06-28 332 rcu_read_lock();
ef9a9d1183b36f Eric Dumazet 2009-10-23 333 for_each_prl_rcu(t->prl) {
298bf12ddb2584 Sascha Hlusiak 2009-09-29 334 if (c >= cmax)
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 335 break;
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 336 if (kprl.addr != htonl(INADDR_ANY) && prl->addr != kprl.addr)
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 337 continue;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 338 kp[c].addr = prl->addr;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 339 kp[c].flags = prl->flags;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 340 c++;
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 341 if (kprl.addr != htonl(INADDR_ANY))
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 342 break;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 343 }
2e837e1d22dbdc katrinzhou 2022-06-28 344
ef9a9d1183b36f Eric Dumazet 2009-10-23 345 rcu_read_unlock();
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 346
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 347 len = sizeof(*kp) * c;
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 348 ret = 0;
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 @349 if ((len && copy_to_user(a + 1, kp, len)) || put_user(len, &a->datalen))
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 350 ret = -EFAULT;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 351
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 352 kfree(kp);
2e837e1d22dbdc katrinzhou 2022-06-28 353 out:
2b4743bd6be9fe YOSHIFUJI Hideaki 2008-06-16 354 return ret;
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 355 }
300aaeeaab5f44 YOSHIFUJI Hideaki 2008-03-24 356
:::::: The code at line 349 was first introduced by commit
:::::: 2b4743bd6be9fedaa560f8c6dc3997e9ec21b99b ipv6 sit: Avoid extra need for compat layer in PRL management.
:::::: TO: YOSHIFUJI Hideaki <yoshfuji@...ux-ipv6.org>
:::::: CC: David S. Miller <davem@...emloft.net>
--
0-DAY CI Kernel Test Service
https://01.org/lkp
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