Hi Andrey, [auto build test WARNING on next-20160201] [cannot apply to kbuild/for-next kbuild/rc-fixes v4.5-rc2 v4.5-rc1 v4.4-rc8 v4.5-rc2] [if your patch is applied to the wrong git tree, please drop us a note to help improving the system]
url: https://github.com/0day-ci/linux/commits/Andrey-Ryabinin/ubsan-x86-disable-alignemnt-checks-for-arch-x86/20160202-010948 config: i386-randconfig-c0-02020138 (attached as .config) reproduce: # save the attached .config to linux build tree make ARCH=i386 Note: it may well be a FALSE warning. FWIW you are at least aware of it now. http://gcc.gnu.org/wiki/Better_Uninitialized_Warnings All warnings (new ones prefixed by >>): drivers/char/tpm/tpm2-cmd.c: In function 'tpm2_unseal_trusted': >> drivers/char/tpm/tpm2-cmd.c:600:3: warning: 'blob_handle' may be used >> uninitialized in this function [-Wmaybe-uninitialized] dev_warn(chip->pdev, "0x%08x was not flushed, out of memory\n", ^ drivers/char/tpm/tpm2-cmd.c:668:6: note: 'blob_handle' was declared here u32 blob_handle; ^ -- drivers/gpio/gpiolib-of.c: In function 'of_gpiochip_add': >> drivers/gpio/gpiolib-of.c:221:7: warning: 'dflags' may be used uninitialized >> in this function [-Wmaybe-uninitialized] if (gpiod_hog(desc, name, lflags, dflags)) ^ drivers/gpio/gpiolib-of.c:211:19: note: 'dflags' was declared here enum gpiod_flags dflags; ^ >> drivers/gpio/gpiolib-of.c:221:7: warning: 'lflags' may be used uninitialized >> in this function [-Wmaybe-uninitialized] if (gpiod_hog(desc, name, lflags, dflags)) ^ drivers/gpio/gpiolib-of.c:210:25: note: 'lflags' was declared here enum gpio_lookup_flags lflags; ^ -- drivers/media/dvb-frontends/drx39xyj/drxj.c: In function 'drx39xxj_read_status': >> drivers/media/dvb-frontends/drx39xyj/drxj.c:10737:33: warning: 'mer' may be >> used uninitialized in this function [-Wmaybe-uninitialized] p->cnr.stat[0].svalue = mer * 100; ^ drivers/media/dvb-frontends/drx39xyj/drxj.c:10670:6: note: 'mer' was declared here u16 mer, strength = 0; ^ >> drivers/media/dvb-frontends/drx39xyj/drxj.c:10728:38: warning: 'ber' may be >> used uninitialized in this function [-Wmaybe-uninitialized] p->post_bit_error.stat[0].uvalue += ber; ^ drivers/media/dvb-frontends/drx39xyj/drxj.c:10669:6: note: 'ber' was declared here u32 ber, cnt, err, pkt; ^ >> drivers/media/dvb-frontends/drx39xyj/drxj.c:10705:35: warning: 'err' may be >> used uninitialized in this function [-Wmaybe-uninitialized] p->block_error.stat[0].uvalue += err; ^ drivers/media/dvb-frontends/drx39xyj/drxj.c:10669:16: note: 'err' was declared here u32 ber, cnt, err, pkt; ^ -- drivers/media/tuners/tda18218.c: In function 'tda18218_attach': >> drivers/media/tuners/tda18218.c:324:10: warning: 'val' may be used >> uninitialized in this function [-Wmaybe-uninitialized] if (ret || val != def_regs[R00_ID]) { ^ -- In file included from drivers/spi/spidev.c:28:0: drivers/spi/spidev.c: In function 'spidev_ioctl': >> include/linux/slab.h:562:9: warning: 'n_ioc' may be used uninitialized in >> this function [-Wmaybe-uninitialized] return __kmalloc(n * size, flags); ^ drivers/spi/spidev.c:362:12: note: 'n_ioc' was declared here unsigned n_ioc; ^ -- fs/btrfs/send.c: In function '__iterate_backrefs': >> fs/btrfs/send.c:1228:5: warning: 'i_size' may be used uninitialized in this >> function [-Wmaybe-uninitialized] if (offset + bctx->data_offset + bctx->extent_len > i_size) ^ -- ipc/shm.c: In function 'SyS_shmdt': >> ipc/shm.c:1311:59: warning: 'file' may be used uninitialized in this >> function [-Wmaybe-uninitialized] ((vma->vm_start - addr)/PAGE_SIZE == vma->vm_pgoff) && ^ ipc/shm.c:1234:15: note: 'file' was declared here struct file *file; ^ -- mm/vmscan.c: In function 'shrink_zone': >> mm/vmscan.c:2410:18: warning: 'lru_pages' may be used uninitialized in this >> function [-Wmaybe-uninitialized] unsigned long lru_pages; ^ -- net/core/dev.c: In function 'validate_xmit_skb_list': >> net/core/dev.c:2984:15: warning: 'tail' may be used uninitialized in this >> function [-Wmaybe-uninitialized] tail->next = skb; ^ vim +/blob_handle +600 drivers/char/tpm/tpm2-cmd.c 954650ef Jarkko Sakkinen 2015-05-30 584 out: 954650ef Jarkko Sakkinen 2015-05-30 585 tpm_buf_destroy(&buf); 954650ef Jarkko Sakkinen 2015-05-30 586 954650ef Jarkko Sakkinen 2015-05-30 587 if (rc > 0) 954650ef Jarkko Sakkinen 2015-05-30 588 rc = -EPERM; 954650ef Jarkko Sakkinen 2015-05-30 589 954650ef Jarkko Sakkinen 2015-05-30 590 return rc; 954650ef Jarkko Sakkinen 2015-05-30 591 } 954650ef Jarkko Sakkinen 2015-05-30 592 954650ef Jarkko Sakkinen 2015-05-30 593 static void tpm2_flush_context(struct tpm_chip *chip, u32 handle) 954650ef Jarkko Sakkinen 2015-05-30 594 { 954650ef Jarkko Sakkinen 2015-05-30 595 struct tpm_buf buf; 954650ef Jarkko Sakkinen 2015-05-30 596 int rc; 954650ef Jarkko Sakkinen 2015-05-30 597 954650ef Jarkko Sakkinen 2015-05-30 598 rc = tpm_buf_init(&buf, TPM2_ST_NO_SESSIONS, TPM2_CC_FLUSH_CONTEXT); 954650ef Jarkko Sakkinen 2015-05-30 599 if (rc) { 954650ef Jarkko Sakkinen 2015-05-30 @600 dev_warn(chip->pdev, "0x%08x was not flushed, out of memory\n", 954650ef Jarkko Sakkinen 2015-05-30 601 handle); 954650ef Jarkko Sakkinen 2015-05-30 602 return; 954650ef Jarkko Sakkinen 2015-05-30 603 } 954650ef Jarkko Sakkinen 2015-05-30 604 954650ef Jarkko Sakkinen 2015-05-30 605 tpm_buf_append_u32(&buf, handle); 954650ef Jarkko Sakkinen 2015-05-30 606 954650ef Jarkko Sakkinen 2015-05-30 607 rc = tpm_transmit_cmd(chip, buf.data, PAGE_SIZE, "flushing context"); 954650ef Jarkko Sakkinen 2015-05-30 608 if (rc) :::::: The code at line 600 was first introduced by commit :::::: 954650efb79f99d5c817c121bb0a7c6c53362048 tpm: seal/unseal for TPM 2.0 :::::: TO: Jarkko Sakkinen <jarkko.sakki...@linux.intel.com> :::::: CC: Peter Huewe <peterhu...@gmx.de> --- 0-DAY kernel test infrastructure Open Source Technology Center https://lists.01.org/pipermail/kbuild-all Intel Corporation
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