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KMSAN: uninit-value in nilfs_add_checksums_on_logs

Status: upstream: reported on 2023/03/06 17:55
Subsystems: nilfs (incorrect?)
Reported-by: syzbot+048585f3f4227bb2b49b@syzkaller.appspotmail.com
First crash: 25d, last: 9h03m
similar bugs (7):
Kernel Title Repro Cause bisect Fix bisect Count Last Reported Patched Status
upstream KMSAN: uninit-value in btrfs_clean_tree_block (2) btrfs nilfs 15960 26d 487d 24/24 fixed on 2023/02/24 13:50
upstream KMSAN: kernel-infoleak in _copy_to_iter (7) net hfs ext4 C 138977 26d 378d 24/24 fixed on 2023/02/24 13:50
upstream KMSAN: uninit-value in aes_encrypt (4) crypto C 6 18d 923d 0/24 upstream: reported C repro on 2020/09/10 14:09
upstream KMSAN: uninit-value in virtqueue_add (3) 13 138d 431d 0/24 auto-obsoleted due to no activity on 2023/02/12 03:53
upstream KMSAN: uninit-value in post_read_mst_fixup 199 415d 855d 0/24 auto-closed as invalid on 2022/05/31 07:12
upstream KMSAN: uninit-value in __crc32c_le_base (2) crypto C 5599 5m 1060d 0/24 upstream: reported C repro on 2020/04/26 06:08
upstream KMSAN: kernel-infoleak in _copy_to_iter (8) net mm C 612 now 16d 19/24 internal: reported C repro on 2023/03/06 07:23

Sample crash report:
=====================================================
BUG: KMSAN: uninit-value in crc32_body lib/crc32.c:112 [inline]
BUG: KMSAN: uninit-value in crc32_le_generic lib/crc32.c:179 [inline]
BUG: KMSAN: uninit-value in crc32_le_base+0x467/0xd80 lib/crc32.c:197
 crc32_body lib/crc32.c:112 [inline]
 crc32_le_generic lib/crc32.c:179 [inline]
 crc32_le_base+0x467/0xd80 lib/crc32.c:197
 nilfs_segbuf_fill_in_data_crc fs/nilfs2/segbuf.c:208 [inline]
 nilfs_add_checksums_on_logs+0x62a/0xe30 fs/nilfs2/segbuf.c:321
 nilfs_segctor_do_construct+0xa553/0xe900 fs/nilfs2/segment.c:2078
 nilfs_segctor_construct+0x1eb/0xe30 fs/nilfs2/segment.c:2381
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2489 [inline]
 nilfs_segctor_thread+0xc76/0x1240 fs/nilfs2/segment.c:2572
 kthread+0x31f/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

Uninit was created at:
 __alloc_pages+0x9f6/0xe90 mm/page_alloc.c:5614
 alloc_pages+0xab0/0xd80 mm/mempolicy.c:2283
 folio_alloc+0x42/0x120 mm/mempolicy.c:2293
 filemap_alloc_folio+0xb2/0x460 mm/filemap.c:976
 __filemap_get_folio+0xe4b/0x1920 mm/filemap.c:1970
 pagecache_get_page+0x4f/0x290 mm/folio-compat.c:99
 find_or_create_page include/linux/pagemap.h:632 [inline]
 grow_dev_page fs/buffer.c:989 [inline]
 grow_buffers fs/buffer.c:1054 [inline]
 __getblk_slow fs/buffer.c:1081 [inline]
 __getblk_gfp+0x375/0x17f0 fs/buffer.c:1376
 sb_getblk include/linux/buffer_head.h:359 [inline]
 nilfs_segbuf_extend_segsum fs/nilfs2/segbuf.c:99 [inline]
 nilfs_segbuf_reset+0x100/0x4f0 fs/nilfs2/segbuf.c:129
 nilfs_segctor_reset_segment_buffer fs/nilfs2/segment.c:421 [inline]
 nilfs_segctor_collect fs/nilfs2/segment.c:1501 [inline]
 nilfs_segctor_do_construct+0x20f7/0xe900 fs/nilfs2/segment.c:2047
 nilfs_segctor_construct+0x1eb/0xe30 fs/nilfs2/segment.c:2381
 nilfs_segctor_thread_construct fs/nilfs2/segment.c:2489 [inline]
 nilfs_segctor_thread+0xc76/0x1240 fs/nilfs2/segment.c:2572
 kthread+0x31f/0x430 kernel/kthread.c:376
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308

CPU: 0 PID: 5374 Comm: segctord Not tainted 6.3.0-rc3-syzkaller-g90ea0df61c98 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/02/2023
=====================================================

Crashes (609):
Manager Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets Title
ci-upstream-kmsan-gce-386 2023/03/22 07:59 https://github.com/google/kmsan.git master 90ea0df61c98 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/22 07:25 https://github.com/google/kmsan.git master 90ea0df61c98 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/22 07:13 https://github.com/google/kmsan.git master 90ea0df61c98 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/22 05:55 https://github.com/google/kmsan.git master 90ea0df61c98 8b4eb097 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 21:19 https://github.com/google/kmsan.git master 90ea0df61c98 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 19:18 https://github.com/google/kmsan.git master 90ea0df61c98 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 17:12 https://github.com/google/kmsan.git master 90ea0df61c98 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 15:43 https://github.com/google/kmsan.git master 90ea0df61c98 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 15:33 https://github.com/google/kmsan.git master 90ea0df61c98 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 14:17 https://github.com/google/kmsan.git master 90ea0df61c98 03fb9538 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/21 00:57 https://github.com/google/kmsan.git master 90ea0df61c98 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/20 20:40 https://github.com/google/kmsan.git master 90ea0df61c98 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/20 19:16 https://github.com/google/kmsan.git master 90ea0df61c98 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/20 08:54 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/20 06:11 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/20 02:30 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 23:19 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 21:34 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 10:16 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 04:02 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 02:41 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 02:03 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 01:02 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/19 00:30 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 22:13 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 20:42 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 20:10 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 18:09 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 16:39 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 15:34 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 15:24 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 14:21 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 12:52 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 12:21 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 11:09 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 10:07 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 08:43 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 08:24 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 07:02 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 06:11 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/18 05:01 https://github.com/google/kmsan.git master 34add094f9de 7939252e .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/17 06:07 https://github.com/google/kmsan.git master 34add094f9de 18b58603 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/06 12:49 https://github.com/google/kmsan.git master 54b4a7d3d6c6 f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/03/05 15:06 https://github.com/google/kmsan.git master 944070199c5e f8902b57 .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
ci-upstream-kmsan-gce-386 2023/02/24 19:48 https://github.com/google/kmsan.git master 97e36f4aa06f ee50e71c .config console log report info [disk image] [vmlinux] [kernel image] KMSAN: uninit-value in nilfs_add_checksums_on_logs
* Struck through repros no longer work on HEAD.