BCC: [email protected] CC: [email protected] CC: [email protected] TO: Mark Rutland <[email protected]> CC: Peter Zijlstra <[email protected]> CC: Palmer Dabbelt <[email protected]>
tree: https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git master head: 5d5d353bed32dc3ea52e2619e0d1c60b17133b91 commit: 9efbb355831014ca004d241db8ede182c019b9bf locking/atomic: riscv: move to ARCH_ATOMIC date: 1 year, 2 months ago :::::: branch date: 4 hours ago :::::: commit date: 1 year, 2 months ago config: riscv-randconfig-m031-20220808 (https://download.01.org/0day-ci/archive/20220809/[email protected]/config) compiler: riscv32-linux-gcc (GCC) 12.1.0 If you fix the issue, kindly add following tag where applicable Reported-by: kernel test robot <[email protected]> Reported-by: Dan Carpenter <[email protected]> New smatch warnings: arch/riscv/include/asm/atomic.h:204 arch_atomic_fetch_add_unless() warn: inconsistent indenting arch/riscv/include/asm/atomic.h:204 arch_atomic_fetch_add_unless() warn: inconsistent indenting arch/riscv/include/asm/atomic.h:204 arch_atomic_fetch_add_unless() warn: inconsistent indenting Old smatch warnings: net/ipv6/ip6_input.c:192 ip6_rcv_core() warn: potential spectre issue '_idev->stats.ipv6->mibs' [w] net/ipv6/ip6_input.c:192 ip6_rcv_core() warn: potential spectre issue 'net->mib.ipv6_statistics->mibs' [w] net/ipv6/ip6_input.c:373 ip6_protocol_deliver_rcu() warn: potential spectre issue 'inet6_protos' [w] net/ipv6/route.c:3304 ip6_route_check_nh() error: we previously assumed '_dev' could be null (see line 3264) vim +204 arch/riscv/include/asm/atomic.h fab957c11efe2f Palmer Dabbelt 2017-07-10 198 5ce6c1f3535fa8 Andrea Parri 2018-03-09 199 /* This is required to provide a full barrier on success. */ 9efbb355831014 Mark Rutland 2021-05-25 200 static __always_inline int arch_atomic_fetch_add_unless(atomic_t *v, int a, int u) fab957c11efe2f Palmer Dabbelt 2017-07-10 201 { fab957c11efe2f Palmer Dabbelt 2017-07-10 202 int prev, rc; fab957c11efe2f Palmer Dabbelt 2017-07-10 203 fab957c11efe2f Palmer Dabbelt 2017-07-10 @204 __asm__ __volatile__ ( 5ce6c1f3535fa8 Andrea Parri 2018-03-09 205 "0: lr.w %[p], %[c]\n" 5ce6c1f3535fa8 Andrea Parri 2018-03-09 206 " beq %[p], %[u], 1f\n" 5ce6c1f3535fa8 Andrea Parri 2018-03-09 207 " add %[rc], %[p], %[a]\n" 5ce6c1f3535fa8 Andrea Parri 2018-03-09 208 " sc.w.rl %[rc], %[rc], %[c]\n" 5ce6c1f3535fa8 Andrea Parri 2018-03-09 209 " bnez %[rc], 0b\n" 5ce6c1f3535fa8 Andrea Parri 2018-03-09 210 " fence rw, rw\n" 5ce6c1f3535fa8 Andrea Parri 2018-03-09 211 "1:\n" fab957c11efe2f Palmer Dabbelt 2017-07-10 212 : [p]"=&r" (prev), [rc]"=&r" (rc), [c]"+A" (v->counter) fab957c11efe2f Palmer Dabbelt 2017-07-10 213 : [a]"r" (a), [u]"r" (u) fab957c11efe2f Palmer Dabbelt 2017-07-10 214 : "memory"); fab957c11efe2f Palmer Dabbelt 2017-07-10 215 return prev; fab957c11efe2f Palmer Dabbelt 2017-07-10 216 } 9efbb355831014 Mark Rutland 2021-05-25 217 #define arch_atomic_fetch_add_unless arch_atomic_fetch_add_unless fab957c11efe2f Palmer Dabbelt 2017-07-10 218 :::::: The code at line 204 was first introduced by commit :::::: fab957c11efe2f405e08b9f0d080524bc2631428 RISC-V: Atomic and Locking Code :::::: TO: Palmer Dabbelt <[email protected]> :::::: CC: Palmer Dabbelt <[email protected]> -- 0-DAY CI Kernel Test Service https://01.org/lkp _______________________________________________ kbuild mailing list -- [email protected] To unsubscribe send an email to [email protected]
