* [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress
@ 2024-09-08 5:40 syzbot
2024-09-09 2:44 ` Zhao Mengmeng
` (4 more replies)
0 siblings, 5 replies; 7+ messages in thread
From: syzbot @ 2024-09-08 5:40 UTC (permalink / raw)
To: almaz.alexandrovich, davem, haren, herbert, linux-crypto,
linux-kernel, ntfs3, syzkaller-bugs
Hello,
syzbot found the following issue on:
HEAD commit: 88fac17500f4 Merge tag 'fuse-fixes-6.11-rc7' of git://git...
git tree: upstream
console+strace: https://syzkaller.appspot.com/x/log.txt?x=14d165b7980000
kernel config: https://syzkaller.appspot.com/x/.config?x=35c699864e165c51
dashboard link: https://syzkaller.appspot.com/bug?extid=17cae3c0a5b0acdc327d
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=156a4e8f980000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13a2c309980000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6e5a9ba13ba0/disk-88fac175.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/229238ec073e/vmlinux-88fac175.xz
kernel image: https://storage.googleapis.com/syzbot-assets/64327bdcda24/bzImage-88fac175.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/e120b354c45a/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+17cae3c0a5b0acdc327d@syzkaller.appspotmail.com
=====================================================
BUG: KMSAN: uninit-value in check_template lib/842/842_compress.c:391 [inline]
BUG: KMSAN: uninit-value in process_next lib/842/842_compress.c:456 [inline]
BUG: KMSAN: uninit-value in sw842_compress+0x15eb/0x5990 lib/842/842_compress.c:543
check_template lib/842/842_compress.c:391 [inline]
process_next lib/842/842_compress.c:456 [inline]
sw842_compress+0x15eb/0x5990 lib/842/842_compress.c:543
crypto842_scompress+0x4f/0x70 crypto/842.c:78
scomp_acomp_comp_decomp+0x7c6/0xb90
scomp_acomp_compress+0x32/0x40 crypto/scompress.c:187
crypto_acomp_compress include/crypto/acompress.h:251 [inline]
zswap_compress+0x368/0xad0 mm/zswap.c:927
zswap_store+0x1af3/0x2dd0 mm/zswap.c:1459
swap_writepage+0x11f/0x470 mm/page_io.c:198
shmem_writepage+0x1a75/0x1f70 mm/shmem.c:1536
pageout mm/vmscan.c:680 [inline]
shrink_folio_list+0x577f/0x7cb0 mm/vmscan.c:1360
evict_folios+0x9bce/0xbc80 mm/vmscan.c:4580
try_to_shrink_lruvec+0x13a3/0x1750 mm/vmscan.c:4775
shrink_one+0x646/0xd20 mm/vmscan.c:4813
shrink_many mm/vmscan.c:4876 [inline]
lru_gen_shrink_node mm/vmscan.c:4954 [inline]
shrink_node+0x451a/0x50f0 mm/vmscan.c:5934
kswapd_shrink_node mm/vmscan.c:6762 [inline]
balance_pgdat mm/vmscan.c:6954 [inline]
kswapd+0x2627/0x4350 mm/vmscan.c:7223
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
<Zero or more stacks not recorded to save memory>
Uninit was stored to memory at:
memcpy_from_iter lib/iov_iter.c:73 [inline]
iterate_bvec include/linux/iov_iter.h:122 [inline]
iterate_and_advance2 include/linux/iov_iter.h:249 [inline]
iterate_and_advance include/linux/iov_iter.h:271 [inline]
__copy_from_iter lib/iov_iter.c:249 [inline]
copy_page_from_iter_atomic+0x12bb/0x2ae0 lib/iov_iter.c:481
copy_folio_from_iter_atomic include/linux/uio.h:186 [inline]
generic_perform_write+0x896/0x12e0 mm/filemap.c:4032
shmem_file_write_iter+0x2bd/0x2f0 mm/shmem.c:3074
do_iter_readv_writev+0x8a1/0xa40
vfs_iter_write+0x459/0xd50 fs/read_write.c:895
lo_write_bvec drivers/block/loop.c:243 [inline]
lo_write_simple drivers/block/loop.c:264 [inline]
do_req_filebacked drivers/block/loop.c:511 [inline]
loop_handle_cmd drivers/block/loop.c:1910 [inline]
loop_process_work+0x15ec/0x3750 drivers/block/loop.c:1945
loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1976
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
indx_write fs/ntfs3/index.c:1027 [inline]
indx_update_dup+0xd81/0xf80 fs/ntfs3/index.c:2694
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_read_run_nb+0x786/0x1070 fs/ntfs3/fsntfs.c:1252
ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1313
indx_read+0x44e/0x17b0 fs/ntfs3/index.c:1067
indx_find+0xd12/0x1440 fs/ntfs3/index.c:1181
indx_update_dup+0x607/0xf80 fs/ntfs3/index.c:2666
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
indx_write fs/ntfs3/index.c:1027 [inline]
indx_update_dup+0xd81/0xf80 fs/ntfs3/index.c:2694
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_read_run_nb+0x786/0x1070 fs/ntfs3/fsntfs.c:1252
ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1313
indx_read+0x44e/0x17b0 fs/ntfs3/index.c:1067
indx_find+0xd12/0x1440 fs/ntfs3/index.c:1181
indx_update_dup+0x607/0xf80 fs/ntfs3/index.c:2666
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
indx_write fs/ntfs3/index.c:1027 [inline]
indx_insert_into_buffer+0xd8f/0x2010 fs/ntfs3/index.c:1811
indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3123
ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1768
ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146
vfs_link+0x93d/0xb70 fs/namei.c:4692
do_linkat+0x4f5/0xfd0 fs/namei.c:4762
__do_sys_link fs/namei.c:4796 [inline]
__se_sys_link fs/namei.c:4794 [inline]
__x64_sys_link+0xe8/0x140 fs/namei.c:4794
x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was stored to memory at:
hdr_insert_de fs/ntfs3/index.c:838 [inline]
indx_insert_into_buffer+0xcdf/0x2010 fs/ntfs3/index.c:1807
indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3123
ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1768
ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146
vfs_link+0x93d/0xb70 fs/namei.c:4692
do_linkat+0x4f5/0xfd0 fs/namei.c:4762
__do_sys_link fs/namei.c:4796 [inline]
__se_sys_link fs/namei.c:4794 [inline]
__x64_sys_link+0xe8/0x140 fs/namei.c:4794
x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at:
slab_post_alloc_hook mm/slub.c:3994 [inline]
slab_alloc_node mm/slub.c:4037 [inline]
kmem_cache_alloc_noprof+0x637/0xb20 mm/slub.c:4044
ntfs_link_inode+0x8f/0x310 fs/ntfs3/inode.c:1756
ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:146
vfs_link+0x93d/0xb70 fs/namei.c:4692
do_linkat+0x4f5/0xfd0 fs/namei.c:4762
__do_sys_link fs/namei.c:4796 [inline]
__se_sys_link fs/namei.c:4794 [inline]
__x64_sys_link+0xe8/0x140 fs/namei.c:4794
x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 1 UID: 0 PID: 83 Comm: kswapd0 Not tainted 6.11.0-rc6-syzkaller-00026-g88fac17500f4 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
=====================================================
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzkaller@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
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If you want to undo deduplication, reply with:
#syz undup
^ permalink raw reply [flat|nested] 7+ messages in thread* Re: [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress
2024-09-08 5:40 [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress syzbot
@ 2024-09-09 2:44 ` Zhao Mengmeng
2024-09-09 3:09 ` syzbot
2024-09-13 6:24 ` [syzbot] " syzbot
` (3 subsequent siblings)
4 siblings, 1 reply; 7+ messages in thread
From: Zhao Mengmeng @ 2024-09-09 2:44 UTC (permalink / raw)
To: syzbot+17cae3c0a5b0acdc327d
Cc: almaz.alexandrovich, davem, haren, herbert, linux-crypto,
linux-kernel, ntfs3, syzkaller-bugs
[-- Attachment #1: Type: text/plain, Size: 9 bytes --]
#syz test
[-- Attachment #2: test.patch --]
[-- Type: text/x-patch, Size: 523 bytes --]
diff --git a/fs/ntfs3/namei.c b/fs/ntfs3/namei.c
index f16d318c4372..39b12cf58a54 100644
--- a/fs/ntfs3/namei.c
+++ b/fs/ntfs3/namei.c
@@ -26,8 +26,12 @@ int fill_name_de(struct ntfs_sb_info *sbi, void *buf, const struct qstr *name,
struct ATTR_FILE_NAME *fname = (struct ATTR_FILE_NAME *)(e + 1);
#ifndef CONFIG_NTFS3_64BIT_CLUSTER
- e->ref.high = fname->home.high = 0;
+ fname->home.high = 0;
#endif
+ e->ref.low = 0;
+ e->ref.high = 0;
+ e->ref.seq = 0;
+
if (uni) {
#ifdef __BIG_ENDIAN
int ulen = uni->len;
^ permalink raw reply related [flat|nested] 7+ messages in thread* Re: [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress
2024-09-09 2:44 ` Zhao Mengmeng
@ 2024-09-09 3:09 ` syzbot
0 siblings, 0 replies; 7+ messages in thread
From: syzbot @ 2024-09-09 3:09 UTC (permalink / raw)
To: almaz.alexandrovich, davem, haren, herbert, linux-crypto,
linux-kernel, ntfs3, syzkaller-bugs, zhaomengmeng
Hello,
syzbot has tested the proposed patch but the reproducer is still triggering an issue:
KMSAN: uninit-value in sw842_compress
=====================================================
BUG: KMSAN: uninit-value in check_template lib/842/842_compress.c:391 [inline]
BUG: KMSAN: uninit-value in process_next lib/842/842_compress.c:456 [inline]
BUG: KMSAN: uninit-value in sw842_compress+0x15eb/0x5990 lib/842/842_compress.c:543
check_template lib/842/842_compress.c:391 [inline]
process_next lib/842/842_compress.c:456 [inline]
sw842_compress+0x15eb/0x5990 lib/842/842_compress.c:543
crypto842_scompress+0x4f/0x70 crypto/842.c:78
scomp_acomp_comp_decomp+0x7c6/0xb90
scomp_acomp_compress+0x32/0x40 crypto/scompress.c:187
crypto_acomp_compress include/crypto/acompress.h:251 [inline]
zswap_compress+0x368/0xad0 mm/zswap.c:927
zswap_store+0x1af3/0x2dd0 mm/zswap.c:1459
swap_writepage+0x11f/0x470 mm/page_io.c:198
shmem_writepage+0x1a75/0x1f70 mm/shmem.c:1536
pageout mm/vmscan.c:680 [inline]
shrink_folio_list+0x577f/0x7cb0 mm/vmscan.c:1360
evict_folios+0x9a49/0xbb30 mm/vmscan.c:4560
try_to_shrink_lruvec+0x13a3/0x1750 mm/vmscan.c:4755
lru_gen_shrink_lruvec mm/vmscan.c:4897 [inline]
shrink_lruvec+0x4a3/0x46c0 mm/vmscan.c:5652
shrink_node_memcgs mm/vmscan.c:5888 [inline]
shrink_node+0x104e/0x50f0 mm/vmscan.c:5928
shrink_zones mm/vmscan.c:6172 [inline]
do_try_to_free_pages+0x820/0x2550 mm/vmscan.c:6234
try_to_free_mem_cgroup_pages+0x3f7/0xae0 mm/vmscan.c:6566
try_charge_memcg+0x72c/0x1830 mm/memcontrol.c:2210
try_charge mm/memcontrol-v1.h:20 [inline]
charge_memcg mm/memcontrol.c:4438 [inline]
__mem_cgroup_charge+0x11d/0x3f0 mm/memcontrol.c:4453
mem_cgroup_charge include/linux/memcontrol.h:672 [inline]
shmem_alloc_and_add_folio+0xe83/0x1ca0 mm/shmem.c:1792
shmem_get_folio_gfp+0x10bd/0x24c0 mm/shmem.c:2188
shmem_read_folio_gfp+0x80/0x140 mm/shmem.c:5201
drm_gem_get_pages+0x3cf/0x1440 drivers/gpu/drm/drm_gem.c:568
drm_gem_shmem_get_pages drivers/gpu/drm/drm_gem_shmem_helper.c:177 [inline]
drm_gem_shmem_vmap+0x2dc/0xca0 drivers/gpu/drm/drm_gem_shmem_helper.c:337
drm_gem_shmem_object_vmap+0x35/0x40 include/drm/drm_gem_shmem_helper.h:229
drm_gem_vmap drivers/gpu/drm/drm_gem.c:1205 [inline]
drm_gem_vmap_unlocked+0xc6/0x200 drivers/gpu/drm/drm_gem.c:1247
drm_gem_fb_vmap+0x11b/0x590 drivers/gpu/drm/drm_gem_framebuffer_helper.c:365
vkms_prepare_fb+0x12f/0x170 drivers/gpu/drm/vkms/vkms_plane.c:176
drm_atomic_helper_prepare_planes+0x436/0x10b0 drivers/gpu/drm/drm_atomic_helper.c:2601
drm_atomic_helper_commit+0x1f3/0xe80 drivers/gpu/drm/drm_atomic_helper.c:2029
drm_atomic_commit+0x30a/0x380 drivers/gpu/drm/drm_atomic.c:1522
drm_atomic_helper_update_plane+0x42b/0x600 drivers/gpu/drm/drm_atomic_helper.c:3190
__setplane_atomic+0x33d/0x3f0 drivers/gpu/drm/drm_plane.c:1074
drm_mode_cursor_universal drivers/gpu/drm/drm_plane.c:1229 [inline]
drm_mode_cursor_common+0x171a/0x1e80 drivers/gpu/drm/drm_plane.c:1288
drm_mode_cursor_ioctl+0x97/0xd0 drivers/gpu/drm/drm_plane.c:1338
drm_ioctl_kernel+0x4ea/0x560 drivers/gpu/drm/drm_ioctl.c:745
drm_ioctl+0xd13/0x15a0 drivers/gpu/drm/drm_ioctl.c:842
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0x261/0x450 fs/ioctl.c:893
__x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:893
x64_sys_call+0x18bf/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:17
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
<Zero or more stacks not recorded to save memory>
Uninit was stored to memory at:
memcpy_from_iter lib/iov_iter.c:73 [inline]
iterate_bvec include/linux/iov_iter.h:122 [inline]
iterate_and_advance2 include/linux/iov_iter.h:249 [inline]
iterate_and_advance include/linux/iov_iter.h:271 [inline]
__copy_from_iter lib/iov_iter.c:249 [inline]
copy_page_from_iter_atomic+0x12bb/0x2ae0 lib/iov_iter.c:481
copy_folio_from_iter_atomic include/linux/uio.h:186 [inline]
generic_perform_write+0x896/0x12e0 mm/filemap.c:4032
shmem_file_write_iter+0x2bd/0x2f0 mm/shmem.c:3074
do_iter_readv_writev+0x8a1/0xa40
vfs_iter_write+0x459/0xd50 fs/read_write.c:895
lo_write_bvec drivers/block/loop.c:243 [inline]
lo_write_simple drivers/block/loop.c:264 [inline]
do_req_filebacked drivers/block/loop.c:511 [inline]
loop_handle_cmd drivers/block/loop.c:1910 [inline]
loop_process_work+0x15ec/0x3750 drivers/block/loop.c:1945
loop_rootcg_workfn+0x2b/0x40 drivers/block/loop.c:1976
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
indx_write fs/ntfs3/index.c:1027 [inline]
indx_update_dup+0xd81/0xf80 fs/ntfs3/index.c:2694
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_read_run_nb+0x786/0x1070 fs/ntfs3/fsntfs.c:1252
ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1313
indx_read+0x44e/0x17b0 fs/ntfs3/index.c:1067
indx_find+0xd12/0x1440 fs/ntfs3/index.c:1181
indx_update_dup+0x607/0xf80 fs/ntfs3/index.c:2666
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
indx_write fs/ntfs3/index.c:1027 [inline]
indx_update_dup+0xd81/0xf80 fs/ntfs3/index.c:2694
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_read_run_nb+0x786/0x1070 fs/ntfs3/fsntfs.c:1252
ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1313
indx_read+0x44e/0x17b0 fs/ntfs3/index.c:1067
indx_find+0xd12/0x1440 fs/ntfs3/index.c:1181
indx_update_dup+0x607/0xf80 fs/ntfs3/index.c:2666
ni_update_parent+0x12de/0x14b0 fs/ntfs3/frecord.c:3301
ni_write_inode+0x1cf4/0x1de0 fs/ntfs3/frecord.c:3392
ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1052
write_inode fs/fs-writeback.c:1497 [inline]
__writeback_single_inode+0x849/0x12c0 fs/fs-writeback.c:1716
writeback_sb_inodes+0xc95/0x1e00 fs/fs-writeback.c:1947
__writeback_inodes_wb+0x14c/0x440 fs/fs-writeback.c:2018
wb_writeback+0x50b/0xea0 fs/fs-writeback.c:2129
wb_check_background_flush fs/fs-writeback.c:2199 [inline]
wb_do_writeback fs/fs-writeback.c:2287 [inline]
wb_workfn+0x122c/0x1940 fs/fs-writeback.c:2314
process_one_work kernel/workqueue.c:3231 [inline]
process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312
worker_thread+0xea7/0x14d0 kernel/workqueue.c:3389
kthread+0x3e2/0x540 kernel/kthread.c:389
ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Uninit was stored to memory at:
ntfs_write_bh+0x652/0xdb0 fs/ntfs3/fsntfs.c:1450
indx_write fs/ntfs3/index.c:1027 [inline]
indx_insert_into_buffer+0xd8f/0x2010 fs/ntfs3/index.c:1811
indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3123
ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1768
ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:150
vfs_link+0x93d/0xb70 fs/namei.c:4692
do_linkat+0x4f5/0xfd0 fs/namei.c:4762
__do_sys_link fs/namei.c:4796 [inline]
__se_sys_link fs/namei.c:4794 [inline]
__x64_sys_link+0xe8/0x140 fs/namei.c:4794
x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was stored to memory at:
hdr_insert_de fs/ntfs3/index.c:838 [inline]
indx_insert_into_buffer+0xcdf/0x2010 fs/ntfs3/index.c:1807
indx_insert_entry+0xa3c/0xee0 fs/ntfs3/index.c:1988
ni_add_name+0xe5d/0x10d0 fs/ntfs3/frecord.c:3123
ntfs_link_inode+0x265/0x310 fs/ntfs3/inode.c:1768
ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:150
vfs_link+0x93d/0xb70 fs/namei.c:4692
do_linkat+0x4f5/0xfd0 fs/namei.c:4762
__do_sys_link fs/namei.c:4796 [inline]
__se_sys_link fs/namei.c:4794 [inline]
__x64_sys_link+0xe8/0x140 fs/namei.c:4794
x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
Uninit was created at:
slab_post_alloc_hook mm/slub.c:3998 [inline]
slab_alloc_node mm/slub.c:4041 [inline]
kmem_cache_alloc_noprof+0x637/0xb20 mm/slub.c:4048
ntfs_link_inode+0x8f/0x310 fs/ntfs3/inode.c:1756
ntfs_link+0x21d/0x500 fs/ntfs3/namei.c:150
vfs_link+0x93d/0xb70 fs/namei.c:4692
do_linkat+0x4f5/0xfd0 fs/namei.c:4762
__do_sys_link fs/namei.c:4796 [inline]
__se_sys_link fs/namei.c:4794 [inline]
__x64_sys_link+0xe8/0x140 fs/namei.c:4794
x64_sys_call+0x2853/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:87
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x1e0 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
CPU: 1 UID: 0 PID: 6036 Comm: syz.0.15 Not tainted 6.11.0-rc7-syzkaller-gda3ea35007d0-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
=====================================================
Tested on:
commit: da3ea350 Linux 6.11-rc7
git tree: upstream
console output: https://syzkaller.appspot.com/x/log.txt?x=17a0e567980000
kernel config: https://syzkaller.appspot.com/x/.config?x=ea008021530b2de3
dashboard link: https://syzkaller.appspot.com/bug?extid=17cae3c0a5b0acdc327d
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=11514e00580000
^ permalink raw reply [flat|nested] 7+ messages in thread
* Re: [syzbot] KMSAN: uninit-value in sw842_compress
2024-09-08 5:40 [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress syzbot
2024-09-09 2:44 ` Zhao Mengmeng
@ 2024-09-13 6:24 ` syzbot
2025-10-21 18:40 ` Forwarded: Re: NTFS3 : " syzbot
` (2 subsequent siblings)
4 siblings, 0 replies; 7+ messages in thread
From: syzbot @ 2024-09-13 6:24 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs
For archival purposes, forwarding an incoming command email to
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com.
***
Subject: KMSAN: uninit-value in sw842_compress
Author: ksjoe30@gmail.com
#syz test
^ permalink raw reply [flat|nested] 7+ messages in thread* Forwarded: Re: NTFS3 : KMSAN: uninit-value in sw842_compress
2024-09-08 5:40 [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress syzbot
2024-09-09 2:44 ` Zhao Mengmeng
2024-09-13 6:24 ` [syzbot] " syzbot
@ 2025-10-21 18:40 ` syzbot
2025-10-22 18:52 ` syzbot
2025-10-23 9:09 ` syzbot
4 siblings, 0 replies; 7+ messages in thread
From: syzbot @ 2025-10-21 18:40 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs
For archival purposes, forwarding an incoming command email to
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com.
***
Subject: Re: NTFS3 : KMSAN: uninit-value in sw842_compress
Author: kubik.bartlomiej@gmail.com
#syz test: https://github.com/google/kmsan.git master
^ permalink raw reply [flat|nested] 7+ messages in thread
* Forwarded: Re: NTFS3 : KMSAN: uninit-value in sw842_compress
2024-09-08 5:40 [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress syzbot
` (2 preceding siblings ...)
2025-10-21 18:40 ` Forwarded: Re: NTFS3 : " syzbot
@ 2025-10-22 18:52 ` syzbot
2025-10-23 9:09 ` syzbot
4 siblings, 0 replies; 7+ messages in thread
From: syzbot @ 2025-10-22 18:52 UTC (permalink / raw)
To: linux-kernel
For archival purposes, forwarding an incoming command email to
linux-kernel@vger.kernel.org.
***
Subject: Re: NTFS3 : KMSAN: uninit-value in sw842_compress
Author: kubik.bartlomiej@gmail.com
#syz test
^ permalink raw reply [flat|nested] 7+ messages in thread* Forwarded: Re: NTFS3 : KMSAN: uninit-value in sw842_compress
2024-09-08 5:40 [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress syzbot
` (3 preceding siblings ...)
2025-10-22 18:52 ` syzbot
@ 2025-10-23 9:09 ` syzbot
4 siblings, 0 replies; 7+ messages in thread
From: syzbot @ 2025-10-23 9:09 UTC (permalink / raw)
To: linux-kernel, syzkaller-bugs
For archival purposes, forwarding an incoming command email to
linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com.
***
Subject: Re: NTFS3 : KMSAN: uninit-value in sw842_compress
Author: kubik.bartlomiej@gmail.com
#syz test
^ permalink raw reply [flat|nested] 7+ messages in thread
end of thread, other threads:[~2025-10-23 9:09 UTC | newest]
Thread overview: 7+ messages (download: mbox.gz follow: Atom feed
-- links below jump to the message on this page --
2024-09-08 5:40 [syzbot] [crypto?] [ntfs3?] KMSAN: uninit-value in sw842_compress syzbot
2024-09-09 2:44 ` Zhao Mengmeng
2024-09-09 3:09 ` syzbot
2024-09-13 6:24 ` [syzbot] " syzbot
2025-10-21 18:40 ` Forwarded: Re: NTFS3 : " syzbot
2025-10-22 18:52 ` syzbot
2025-10-23 9:09 ` syzbot
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