Hi Michael, First bad commit (maybe != root cause): tree: https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git linux-4.19.y head: 43d555d83c3f1fb8168367ca5b47c3a6570ca487 commit: 57ac40ee09cea2ec90f71c6f49b15d0d82667b38 [2397/2938] powerpc: Drop -me200 addition to build flags config: powerpc64-randconfig-r002-20210120 (attached as .config) compiler: clang version 12.0.0 (https://github.com/llvm/llvm-project 22b68440e1647e16b5ee24b924986207173c02d1) 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 # install powerpc64 cross compiling tool for clang build # apt-get install binutils-powerpc64-linux-gnu # https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux-stable-rc.git/commit/?id=57ac40ee09cea2ec90f71c6f49b15d0d82667b38 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 57ac40ee09cea2ec90f71c6f49b15d0d82667b38 # save the attached .config to linux build tree COMPILER_INSTALL_PATH=$HOME/0day COMPILER=clang make.cross ARCH=powerpc64 If you fix the issue, kindly add following tag as appropriate Reported-by: kernel test robot All warnings (new ones prefixed by >>): >> fs//ufs/balloc.c:135:6: warning: stack frame size of 1472 bytes in function 'ufs_free_blocks' [-Wframe-larger-than=] void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) ^ 1 warning generated. -- drivers/target/target_core_pr.c:1649:35: warning: format specifies type 'unsigned short' but the argument has type 'u32' (aka 'unsigned int') [-Wformat] dest_node_acl->initiatorname, dest_rtpi); ^~~~~~~~~ include/linux/printk.h:335:26: note: expanded from macro 'pr_debug' dynamic_pr_debug(fmt, ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ include/linux/dynamic_debug.h:128:10: note: expanded from macro 'dynamic_pr_debug' ##__VA_ARGS__); \ ^~~~~~~~~~~ drivers/target/target_core_pr.c:1687:5: warning: format specifies type 'unsigned short' but the argument has type 'u32' (aka 'unsigned int') [-Wformat] dest_rtpi); ^~~~~~~~~ include/linux/printk.h:303:33: note: expanded from macro 'pr_err' printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__) ~~~ ^~~~~~~~~~~ >> drivers/target/target_core_pr.c:2012:23: warning: stack frame size of 1056 bytes in function 'core_scsi3_update_and_write_aptpl' [-Wframe-larger-than=] static sense_reason_t core_scsi3_update_and_write_aptpl(struct se_device *dev, bool aptpl) ^ 3 warnings generated. -- drivers/staging/erofs/unzip_vle.c:19:6: warning: no previous prototype for function 'z_erofs_exit_zip_subsystem' [-Wmissing-prototypes] void z_erofs_exit_zip_subsystem(void) ^ drivers/staging/erofs/unzip_vle.c:19:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void z_erofs_exit_zip_subsystem(void) ^ static drivers/staging/erofs/unzip_vle.c:40:5: warning: no previous prototype for function 'z_erofs_init_zip_subsystem' [-Wmissing-prototypes] int z_erofs_init_zip_subsystem(void) ^ drivers/staging/erofs/unzip_vle.c:40:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int z_erofs_init_zip_subsystem(void) ^ static drivers/staging/erofs/unzip_vle.c:513:6: warning: no previous prototype for function 'erofs_workgroup_free_rcu' [-Wmissing-prototypes] void erofs_workgroup_free_rcu(struct erofs_workgroup *grp) ^ drivers/staging/erofs/unzip_vle.c:513:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void erofs_workgroup_free_rcu(struct erofs_workgroup *grp) ^ static drivers/staging/erofs/unzip_vle.c:528:6: warning: no previous prototype for function 'z_erofs_vle_work_release' [-Wmissing-prototypes] void z_erofs_vle_work_release(struct z_erofs_vle_work *work) ^ drivers/staging/erofs/unzip_vle.c:528:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void z_erofs_vle_work_release(struct z_erofs_vle_work *work) ^ static drivers/staging/erofs/unzip_vle.c:1567:5: warning: no previous prototype for function 'z_erofs_map_blocks_iter' [-Wmissing-prototypes] int z_erofs_map_blocks_iter(struct inode *inode, ^ drivers/staging/erofs/unzip_vle.c:1567:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int z_erofs_map_blocks_iter(struct inode *inode, ^ static >> drivers/staging/erofs/unzip_vle.c:595:12: warning: stack frame size of 1264 bytes in function 'z_erofs_do_read_page' [-Wframe-larger-than=] static int z_erofs_do_read_page(struct z_erofs_vle_frontend *fe, ^ 6 warnings generated. -- >> drivers/staging/fbtft/fbtft-core.c:1106:5: warning: stack frame size of 1136 bytes in function 'fbtft_init_display' [-Wframe-larger-than=] int fbtft_init_display(struct fbtft_par *par) ^ 1 warning generated. drivers/staging/fbtft/fbtft-core.c:653: warning: Function parameter or member 'pdata' not described in 'fbtft_framebuffer_alloc' -- >> drivers/block/pktcdvd.c:1427:12: warning: stack frame size of 1280 bytes in function 'kcdrwd' [-Wframe-larger-than=] static int kcdrwd(void *foobar) ^ >> drivers/block/pktcdvd.c:1322:13: warning: stack frame size of 1056 bytes in function 'pkt_run_state_machine' [-Wframe-larger-than=] static void pkt_run_state_machine(struct pktcdvd_device *pd, struct packet_data *pkt) ^ 2 warnings generated. -- >> fs//btrfs/relocation.c:646:22: warning: stack frame size of 1072 bytes in function 'build_backref_tree' [-Wframe-larger-than=] struct backref_node *build_backref_tree(struct reloc_control *rc, ^ 1 warning generated. -- >> fs//btrfs/send.c:3882:12: warning: stack frame size of 1200 bytes in function 'process_recorded_refs' [-Wframe-larger-than=] static int process_recorded_refs(struct send_ctx *sctx, int *pending_move) ^ 1 warning generated. -- drivers/md/dm-integrity.c:3616:12: warning: no previous prototype for function 'dm_integrity_init' [-Wmissing-prototypes] int __init dm_integrity_init(void) ^ drivers/md/dm-integrity.c:3616:1: note: declare 'static' if the function is not intended to be used outside of this translation unit int __init dm_integrity_init(void) ^ static drivers/md/dm-integrity.c:3635:6: warning: no previous prototype for function 'dm_integrity_exit' [-Wmissing-prototypes] void dm_integrity_exit(void) ^ drivers/md/dm-integrity.c:3635:1: note: declare 'static' if the function is not intended to be used outside of this translation unit void dm_integrity_exit(void) ^ static >> drivers/md/dm-integrity.c:1643:13: warning: stack frame size of 1104 bytes in function 'dm_integrity_map_continue' [-Wframe-larger-than=] static void dm_integrity_map_continue(struct dm_integrity_io *dio, bool from_map) ^ >> drivers/md/dm-integrity.c:1492:13: warning: stack frame size of 1216 bytes in function '__journal_read_write' [-Wframe-larger-than=] static bool __journal_read_write(struct dm_integrity_io *dio, struct bio *bio, ^ 4 warnings generated. -- >> drivers/md/raid1.c:2496:13: warning: stack frame size of 1584 bytes in function 'raid1d' [-Wframe-larger-than=] static void raid1d(struct md_thread *thread) ^ 1 warning generated. -- drivers/md/raid10.c:2938:17: warning: stack frame size of 2208 bytes in function 'raid10_sync_request' [-Wframe-larger-than=] static sector_t raid10_sync_request(struct mddev *mddev, sector_t sector_nr, ^ >> drivers/md/raid10.c:2748:13: warning: stack frame size of 1360 bytes in function 'raid10d' [-Wframe-larger-than=] static void raid10d(struct md_thread *thread) ^ 2 warnings generated. -- >> drivers/md/raid5.c:984:13: warning: stack frame size of 1584 bytes in function 'ops_run_io' [-Wframe-larger-than=] static void ops_run_io(struct stripe_head *sh, struct stripe_head_state *s) ^ 1 warning generated. drivers/md/raid5.c:2242: warning: Function parameter or member 'num' not described in 'scribble_alloc' drivers/md/raid5.c:2242: warning: Function parameter or member 'cnt' not described in 'scribble_alloc' drivers/md/raid5.c:2242: warning: Function parameter or member 'flags' not described in 'scribble_alloc' drivers/md/raid5.c:3709: warning: Function parameter or member 'sh' not described in 'handle_stripe_fill' drivers/md/raid5.c:3709: warning: Function parameter or member 's' not described in 'handle_stripe_fill' drivers/md/raid5.c:3709: warning: Function parameter or member 'disks' not described in 'handle_stripe_fill' .. Kconfig warnings: (for reference only) WARNING: unmet direct dependencies detected for FSL_EMB_PERFMON Depends on E500 || PPC_83xx Selected by - PPC_FSL_BOOK3E vim +/ufs_free_blocks +135 fs//ufs/balloc.c ^1da177e4c3f415 Linus Torvalds 2005-04-16 131 ^1da177e4c3f415 Linus Torvalds 2005-04-16 132 /* ^1da177e4c3f415 Linus Torvalds 2005-04-16 133 * Free 'count' fragments from fragment number 'fragment' (free whole blocks) ^1da177e4c3f415 Linus Torvalds 2005-04-16 134 */ 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 @135 void ufs_free_blocks(struct inode *inode, u64 fragment, unsigned count) 6ef4d6bf86a8296 Evgeniy Dushistov 2006-06-25 136 { ^1da177e4c3f415 Linus Torvalds 2005-04-16 137 struct super_block * sb; ^1da177e4c3f415 Linus Torvalds 2005-04-16 138 struct ufs_sb_private_info * uspi; ^1da177e4c3f415 Linus Torvalds 2005-04-16 139 struct ufs_cg_private_info * ucpi; ^1da177e4c3f415 Linus Torvalds 2005-04-16 140 struct ufs_cylinder_group * ucg; 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 141 unsigned overflow, cgno, bit, end_bit, i; 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 142 u64 blkno; ^1da177e4c3f415 Linus Torvalds 2005-04-16 143 ^1da177e4c3f415 Linus Torvalds 2005-04-16 144 sb = inode->i_sb; ^1da177e4c3f415 Linus Torvalds 2005-04-16 145 uspi = UFS_SB(sb)->s_uspi; ^1da177e4c3f415 Linus Torvalds 2005-04-16 146 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 147 UFSD("ENTER, fragment %llu, count %u\n", 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 148 (unsigned long long)fragment, count); ^1da177e4c3f415 Linus Torvalds 2005-04-16 149 ^1da177e4c3f415 Linus Torvalds 2005-04-16 150 if ((fragment & uspi->s_fpbmask) || (count & uspi->s_fpbmask)) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 151 ufs_error (sb, "ufs_free_blocks", "internal error, " 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 152 "fragment %llu, count %u\n", 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 153 (unsigned long long)fragment, count); ^1da177e4c3f415 Linus Torvalds 2005-04-16 154 goto failed; ^1da177e4c3f415 Linus Torvalds 2005-04-16 155 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 156 cdd9eefdf905e92 Fabian Frederick 2015-06-10 157 mutex_lock(&UFS_SB(sb)->s_lock); ^1da177e4c3f415 Linus Torvalds 2005-04-16 158 ^1da177e4c3f415 Linus Torvalds 2005-04-16 159 do_more: ^1da177e4c3f415 Linus Torvalds 2005-04-16 160 overflow = 0; 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 161 cgno = ufs_dtog(uspi, fragment); 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 162 bit = ufs_dtogd(uspi, fragment); ^1da177e4c3f415 Linus Torvalds 2005-04-16 163 if (cgno >= uspi->s_ncg) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 164 ufs_panic (sb, "ufs_free_blocks", "freeing blocks are outside device"); 2e006393ba5b599 Evgeniy Dushistov 2006-06-25 165 goto failed_unlock; ^1da177e4c3f415 Linus Torvalds 2005-04-16 166 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 167 end_bit = bit + count; ^1da177e4c3f415 Linus Torvalds 2005-04-16 168 if (end_bit > uspi->s_fpg) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 169 overflow = bit + count - uspi->s_fpg; ^1da177e4c3f415 Linus Torvalds 2005-04-16 170 count -= overflow; ^1da177e4c3f415 Linus Torvalds 2005-04-16 171 end_bit -= overflow; ^1da177e4c3f415 Linus Torvalds 2005-04-16 172 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 173 ^1da177e4c3f415 Linus Torvalds 2005-04-16 174 ucpi = ufs_load_cylinder (sb, cgno); ^1da177e4c3f415 Linus Torvalds 2005-04-16 175 if (!ucpi) 2e006393ba5b599 Evgeniy Dushistov 2006-06-25 176 goto failed_unlock; 9695ef16ed4e00b Evgeniy Dushistov 2006-06-25 177 ucg = ubh_get_ucg (UCPI_UBH(ucpi)); ^1da177e4c3f415 Linus Torvalds 2005-04-16 178 if (!ufs_cg_chkmagic(sb, ucg)) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 179 ufs_panic (sb, "ufs_free_blocks", "internal error, bad magic number on cg %u", cgno); 2e006393ba5b599 Evgeniy Dushistov 2006-06-25 180 goto failed_unlock; ^1da177e4c3f415 Linus Torvalds 2005-04-16 181 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 182 ^1da177e4c3f415 Linus Torvalds 2005-04-16 183 for (i = bit; i < end_bit; i += uspi->s_fpb) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 184 blkno = ufs_fragstoblks(i); 9695ef16ed4e00b Evgeniy Dushistov 2006-06-25 185 if (ubh_isblockset(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno)) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 186 ufs_error(sb, "ufs_free_blocks", "freeing free fragment"); ^1da177e4c3f415 Linus Torvalds 2005-04-16 187 } 9695ef16ed4e00b Evgeniy Dushistov 2006-06-25 188 ubh_setblock(UCPI_UBH(ucpi), ucpi->c_freeoff, blkno); eb315d2ae614493 Al Viro 2017-06-08 189 inode_sub_bytes(inode, uspi->s_fpb << uspi->s_fshift); ^1da177e4c3f415 Linus Torvalds 2005-04-16 190 if ((UFS_SB(sb)->s_flags & UFS_CG_MASK) == UFS_CG_44BSD) ^1da177e4c3f415 Linus Torvalds 2005-04-16 191 ufs_clusteracct (sb, ucpi, blkno, 1); ^1da177e4c3f415 Linus Torvalds 2005-04-16 192 ^1da177e4c3f415 Linus Torvalds 2005-04-16 193 fs32_add(sb, &ucg->cg_cs.cs_nbfree, 1); ee3ffd6c1263236 Evgeniy Dushistov 2006-06-25 194 uspi->cs_total.cs_nbfree++; ^1da177e4c3f415 Linus Torvalds 2005-04-16 195 fs32_add(sb, &UFS_SB(sb)->fs_cs(cgno).cs_nbfree, 1); 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 196 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 197 if (uspi->fs_magic != UFS2_MAGIC) { 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 198 unsigned cylno = ufs_cbtocylno(i); 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 199 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 200 fs16_add(sb, &ubh_cg_blks(ucpi, cylno, 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 201 ufs_cbtorpos(i)), 1); ^1da177e4c3f415 Linus Torvalds 2005-04-16 202 fs32_add(sb, &ubh_cg_blktot(ucpi, cylno), 1); ^1da177e4c3f415 Linus Torvalds 2005-04-16 203 } 54fb996ac15c401 Evgeniy Dushistov 2007-02-12 204 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 205 9695ef16ed4e00b Evgeniy Dushistov 2006-06-25 206 ubh_mark_buffer_dirty (USPI_UBH(uspi)); 9695ef16ed4e00b Evgeniy Dushistov 2006-06-25 207 ubh_mark_buffer_dirty (UCPI_UBH(ucpi)); 1751e8a6cb935e5 Linus Torvalds 2017-11-27 208 if (sb->s_flags & SB_SYNCHRONOUS) 9cb569d601e0b93 Christoph Hellwig 2010-08-11 209 ubh_sync_block(UCPI_UBH(ucpi)); ^1da177e4c3f415 Linus Torvalds 2005-04-16 210 ^1da177e4c3f415 Linus Torvalds 2005-04-16 211 if (overflow) { ^1da177e4c3f415 Linus Torvalds 2005-04-16 212 fragment += count; ^1da177e4c3f415 Linus Torvalds 2005-04-16 213 count = overflow; ^1da177e4c3f415 Linus Torvalds 2005-04-16 214 goto do_more; ^1da177e4c3f415 Linus Torvalds 2005-04-16 215 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 216 9e9ad5f408889db Artem Bityutskiy 2012-07-12 217 ufs_mark_sb_dirty(sb); cdd9eefdf905e92 Fabian Frederick 2015-06-10 218 mutex_unlock(&UFS_SB(sb)->s_lock); abf5d15fd2e5251 Evgeniy Dushistov 2006-06-25 219 UFSD("EXIT\n"); ^1da177e4c3f415 Linus Torvalds 2005-04-16 220 return; ^1da177e4c3f415 Linus Torvalds 2005-04-16 221 2e006393ba5b599 Evgeniy Dushistov 2006-06-25 222 failed_unlock: cdd9eefdf905e92 Fabian Frederick 2015-06-10 223 mutex_unlock(&UFS_SB(sb)->s_lock); 2e006393ba5b599 Evgeniy Dushistov 2006-06-25 224 failed: abf5d15fd2e5251 Evgeniy Dushistov 2006-06-25 225 UFSD("EXIT (FAILED)\n"); ^1da177e4c3f415 Linus Torvalds 2005-04-16 226 return; ^1da177e4c3f415 Linus Torvalds 2005-04-16 227 } ^1da177e4c3f415 Linus Torvalds 2005-04-16 228 :::::: The code at line 135 was first introduced by commit :::::: 54fb996ac15c4014fa4d6b0ec8e42da134204897 [PATCH] ufs2 write: block allocation update :::::: TO: Evgeniy Dushistov :::::: CC: Linus Torvalds --- 0-DAY CI Kernel Test Service, Intel Corporation https://lists.01.org/hyperkitty/list/kbuild-all(a)lists.01.org