===================================================== BUG: KMSAN: uninit-value in check_template lib/842/842_compress.c:-1 [inline] BUG: KMSAN: uninit-value in process_next lib/842/842_compress.c:456 [inline] BUG: KMSAN: uninit-value in sw842_compress+0x1933/0x5a90 lib/842/842_compress.c:545 check_template lib/842/842_compress.c:-1 [inline] process_next lib/842/842_compress.c:456 [inline] sw842_compress+0x1933/0x5a90 lib/842/842_compress.c:545 crypto842_scompress+0x4f/0x70 crypto/842.c:50 scomp_acomp_comp_decomp+0xa8d/0xd90 crypto/scompress.c:-1 scomp_acomp_chain crypto/scompress.c:301 [inline] scomp_acomp_compress+0x3c/0x1f0 crypto/scompress.c:312 acomp_do_req_chain+0x39a/0x9f0 crypto/acompress.c:353 crypto_acomp_compress+0x5f/0x80 crypto/acompress.c:372 zswap_compress mm/zswap.c:977 [inline] zswap_store_page mm/zswap.c:1495 [inline] zswap_store+0x20a1/0x4720 mm/zswap.c:1604 swap_writepage+0xa7f/0x1980 mm/page_io.c:278 shmem_writepage+0x25e2/0x2840 mm/shmem.c:1649 pageout mm/vmscan.c:711 [inline] shrink_folio_list+0x6049/0x8490 mm/vmscan.c:1436 evict_folios+0x93a4/0xb930 mm/vmscan.c:4698 try_to_shrink_lruvec+0xc6a/0x1090 mm/vmscan.c:4859 shrink_one+0x646/0xd20 mm/vmscan.c:4904 shrink_many mm/vmscan.c:4967 [inline] lru_gen_shrink_node mm/vmscan.c:5045 [inline] shrink_node+0x45d1/0x5220 mm/vmscan.c:6016 shrink_zones mm/vmscan.c:6274 [inline] do_try_to_free_pages+0x81d/0x2450 mm/vmscan.c:6336 try_to_free_pages+0x11b4/0x1710 mm/vmscan.c:6582 __perform_reclaim mm/page_alloc.c:4140 [inline] __alloc_pages_direct_reclaim+0x107/0x330 mm/page_alloc.c:4162 __alloc_pages_slowpath+0xc20/0x17c0 mm/page_alloc.c:4603 __alloc_frozen_pages_noprof+0x997/0xe30 mm/page_alloc.c:4983 alloc_pages_mpol+0x4cd/0x890 mm/mempolicy.c:2301 alloc_frozen_pages_noprof mm/mempolicy.c:2372 [inline] alloc_pages_noprof+0x1b5/0x250 mm/mempolicy.c:2392 relay_alloc_buf kernel/relay.c:121 [inline] relay_create_buf kernel/relay.c:162 [inline] relay_open_buf+0x42c/0x1770 kernel/relay.c:383 relay_open+0x60f/0xea0 kernel/relay.c:516 do_blk_trace_setup+0x6ae/0xe60 kernel/trace/blktrace.c:590 blk_trace_setup+0x120/0x260 kernel/trace/blktrace.c:632 sg_ioctl_common drivers/scsi/sg.c:1114 [inline] sg_ioctl+0xdfc/0x47e0 drivers/scsi/sg.c:1156 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0x241/0x430 fs/ioctl.c:892 __x64_sys_ioctl+0x96/0xe0 fs/ioctl.c:892 x64_sys_call+0x1a16/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: ntfs_write_bh+0x6b8/0xe10 fs/ntfs3/fsntfs.c:1426 indx_write fs/ntfs3/index.c:1027 [inline] indx_update_dup+0xda4/0xf70 fs/ntfs3/index.c:2692 ni_update_parent+0x117d/0x14b0 fs/ntfs3/frecord.c:3173 ni_write_inode+0x1d05/0x1df0 fs/ntfs3/frecord.c:3264 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1019 write_inode fs/fs-writeback.c:1525 [inline] __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1745 writeback_sb_inodes+0xac4/0x1c90 fs/fs-writeback.c:1976 wb_writeback+0x4df/0xcb0 fs/fs-writeback.c:2156 wb_do_writeback fs/fs-writeback.c:2303 [inline] wb_workfn+0x40b/0x1970 fs/fs-writeback.c:2343 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xc1d/0x1e80 kernel/workqueue.c:3319 worker_thread+0xea3/0x1500 kernel/workqueue.c:3400 kthread+0x6ce/0xf10 kernel/kthread.c:464 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Uninit was stored to memory at: ntfs_read_run_nb+0x7d3/0x1110 fs/ntfs3/fsntfs.c:1228 ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1289 indx_read+0x45b/0x1740 fs/ntfs3/index.c:1067 indx_find+0xd18/0x1450 fs/ntfs3/index.c:1179 indx_update_dup+0xa7f/0xf70 fs/ntfs3/index.c:2664 ni_update_parent+0x117d/0x14b0 fs/ntfs3/frecord.c:3173 ni_write_inode+0x1d05/0x1df0 fs/ntfs3/frecord.c:3264 ntfs3_write_inode+0x94/0xb0 fs/ntfs3/inode.c:1019 write_inode fs/fs-writeback.c:1525 [inline] __writeback_single_inode+0x8da/0x1290 fs/fs-writeback.c:1745 writeback_sb_inodes+0xac4/0x1c90 fs/fs-writeback.c:1976 wb_writeback+0x4df/0xcb0 fs/fs-writeback.c:2156 wb_do_writeback fs/fs-writeback.c:2303 [inline] wb_workfn+0x40b/0x1970 fs/fs-writeback.c:2343 process_one_work kernel/workqueue.c:3238 [inline] process_scheduled_works+0xc1d/0x1e80 kernel/workqueue.c:3319 worker_thread+0xea3/0x1500 kernel/workqueue.c:3400 kthread+0x6ce/0xf10 kernel/kthread.c:464 ret_from_fork+0x6d/0x90 arch/x86/kernel/process.c:153 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245 Uninit was stored to memory at: ntfs_write_bh+0x6b8/0xe10 fs/ntfs3/fsntfs.c:1426 indx_write fs/ntfs3/index.c:1027 [inline] indx_insert_into_buffer+0x2a5/0x1db0 fs/ntfs3/index.c:1809 indx_insert_entry+0xa42/0xef0 fs/ntfs3/index.c:1986 ntfs_create_inode+0x4450/0x4f00 fs/ntfs3/inode.c:1616 ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207 vfs_mkdir+0x4f7/0x830 fs/namei.c:4359 do_mkdirat+0x3db/0x870 fs/namei.c:4392 __do_sys_mkdir fs/namei.c:4414 [inline] __se_sys_mkdir fs/namei.c:4412 [inline] __x64_sys_mkdir+0x9f/0xe0 fs/namei.c:4412 x64_sys_call+0x267e/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:84 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: hdr_insert_de+0x3de/0x4d0 fs/ntfs3/index.c:835 indx_insert_into_buffer+0x1bf/0x1db0 fs/ntfs3/index.c:1805 indx_insert_entry+0xa42/0xef0 fs/ntfs3/index.c:1986 ntfs_create_inode+0x4450/0x4f00 fs/ntfs3/inode.c:1616 ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207 vfs_mkdir+0x4f7/0x830 fs/namei.c:4359 do_mkdirat+0x3db/0x870 fs/namei.c:4392 __do_sys_mkdir fs/namei.c:4414 [inline] __se_sys_mkdir fs/namei.c:4412 [inline] __x64_sys_mkdir+0x9f/0xe0 fs/namei.c:4412 x64_sys_call+0x267e/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:84 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: ntfs_read_run_nb+0x7d3/0x1110 fs/ntfs3/fsntfs.c:1228 ntfs_read_bh+0x64/0xde0 fs/ntfs3/fsntfs.c:1289 indx_read+0x45b/0x1740 fs/ntfs3/index.c:1067 indx_find+0xd18/0x1450 fs/ntfs3/index.c:1179 indx_insert_entry+0xae5/0xef0 fs/ntfs3/index.c:1963 ntfs_create_inode+0x4450/0x4f00 fs/ntfs3/inode.c:1616 ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207 vfs_mkdir+0x4f7/0x830 fs/namei.c:4359 do_mkdirat+0x3db/0x870 fs/namei.c:4392 __do_sys_mkdir fs/namei.c:4414 [inline] __se_sys_mkdir fs/namei.c:4412 [inline] __x64_sys_mkdir+0x9f/0xe0 fs/namei.c:4412 x64_sys_call+0x267e/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:84 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: ntfs_write_bh+0x6b8/0xe10 fs/ntfs3/fsntfs.c:1426 indx_write fs/ntfs3/index.c:1027 [inline] indx_insert_into_buffer+0x2a5/0x1db0 fs/ntfs3/index.c:1809 indx_insert_entry+0xa42/0xef0 fs/ntfs3/index.c:1986 ntfs_create_inode+0x4450/0x4f00 fs/ntfs3/inode.c:1616 ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207 vfs_mkdir+0x4f7/0x830 fs/namei.c:4359 do_mkdirat+0x3db/0x870 fs/namei.c:4392 __do_sys_mkdirat fs/namei.c:4409 [inline] __se_sys_mkdirat fs/namei.c:4407 [inline] __x64_sys_mkdirat+0xc6/0x120 fs/namei.c:4407 x64_sys_call+0x3a33/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was stored to memory at: hdr_insert_de+0x439/0x4d0 fs/ntfs3/index.c:838 indx_insert_into_buffer+0x1bf/0x1db0 fs/ntfs3/index.c:1805 indx_insert_entry+0xa42/0xef0 fs/ntfs3/index.c:1986 ntfs_create_inode+0x4450/0x4f00 fs/ntfs3/inode.c:1616 ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207 vfs_mkdir+0x4f7/0x830 fs/namei.c:4359 do_mkdirat+0x3db/0x870 fs/namei.c:4392 __do_sys_mkdirat fs/namei.c:4409 [inline] __se_sys_mkdirat fs/namei.c:4407 [inline] __x64_sys_mkdirat+0xc6/0x120 fs/namei.c:4407 x64_sys_call+0x3a33/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f Uninit was created at: slab_post_alloc_hook mm/slub.c:4167 [inline] slab_alloc_node mm/slub.c:4210 [inline] kmem_cache_alloc_noprof+0x926/0xe20 mm/slub.c:4217 ntfs_create_inode+0x60a/0x4f00 fs/ntfs3/inode.c:1253 ntfs_mkdir+0x56/0x80 fs/ntfs3/namei.c:207 vfs_mkdir+0x4f7/0x830 fs/namei.c:4359 do_mkdirat+0x3db/0x870 fs/namei.c:4392 __do_sys_mkdirat fs/namei.c:4409 [inline] __se_sys_mkdirat fs/namei.c:4407 [inline] __x64_sys_mkdirat+0xc6/0x120 fs/namei.c:4407 x64_sys_call+0x3a33/0x3c80 arch/x86/include/generated/asm/syscalls_64.h:259 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xcd/0x1b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f CPU: 1 UID: 0 PID: 24928 Comm: syz.4.5390 Not tainted 6.15.0-rc3-syzkaller-00019-gbc3372351d0c #0 PREEMPT(undef) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 02/12/2025 =====================================================