===================================================== BUG: KMSAN: uninit-value in process_next lib/842/842_compress.c:456 [inline] BUG: KMSAN: uninit-value in sw842_compress+0x1767/0x5990 lib/842/842_compress.c:543 process_next lib/842/842_compress.c:456 [inline] sw842_compress+0x1767/0x5990 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 obj_cgroup_charge_pages+0x2cb/0x640 mm/memcontrol.c:2660 __memcg_kmem_charge_page+0x151/0x520 mm/memcontrol.c:2687 __alloc_pages_noprof+0x974/0xe70 mm/page_alloc.c:4719 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] vm_area_alloc_pages mm/vmalloc.c:3589 [inline] __vmalloc_area_node mm/vmalloc.c:3656 [inline] __vmalloc_node_range_noprof+0xde9/0x2680 mm/vmalloc.c:3837 __bpf_map_area_alloc kernel/bpf/syscall.c:307 [inline] bpf_map_area_alloc+0x17b/0x1d0 kernel/bpf/syscall.c:314 bloom_map_alloc+0x4ed/0x780 kernel/bpf/bloom_filter.c:146 map_create+0x1185/0x1e10 kernel/bpf/syscall.c:1333 __sys_bpf+0xa65/0xd90 kernel/bpf/syscall.c:5692 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5815 x64_sys_call+0x2cce/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:322 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: get_next_data lib/842/842_compress.c:412 [inline] sw842_compress+0xdfc/0x5990 lib/842/842_compress.c:522 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 obj_cgroup_charge_pages+0x2cb/0x640 mm/memcontrol.c:2660 __memcg_kmem_charge_page+0x151/0x520 mm/memcontrol.c:2687 __alloc_pages_noprof+0x974/0xe70 mm/page_alloc.c:4719 __alloc_pages_node_noprof include/linux/gfp.h:269 [inline] alloc_pages_node_noprof include/linux/gfp.h:296 [inline] vm_area_alloc_pages mm/vmalloc.c:3589 [inline] __vmalloc_area_node mm/vmalloc.c:3656 [inline] __vmalloc_node_range_noprof+0xde9/0x2680 mm/vmalloc.c:3837 __bpf_map_area_alloc kernel/bpf/syscall.c:307 [inline] bpf_map_area_alloc+0x17b/0x1d0 kernel/bpf/syscall.c:314 bloom_map_alloc+0x4ed/0x780 kernel/bpf/bloom_filter.c:146 map_create+0x1185/0x1e10 kernel/bpf/syscall.c:1333 __sys_bpf+0xa65/0xd90 kernel/bpf/syscall.c:5692 __do_sys_bpf kernel/bpf/syscall.c:5817 [inline] __se_sys_bpf kernel/bpf/syscall.c:5815 [inline] __x64_sys_bpf+0xa0/0xe0 kernel/bpf/syscall.c:5815 x64_sys_call+0x2cce/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:322 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: 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_workfn+0x48/0x60 drivers/block/loop.c:1969 process_one_work kernel/workqueue.c:3231 [inline] process_scheduled_works+0xae0/0x1c40 kernel/workqueue.c:3312 worker_thread+0xea7/0x14f0 kernel/workqueue.c:3393 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: lmWriteRecord+0xf4c/0x1870 fs/jfs/jfs_logmgr.c:473 lmLogInit+0x1c4c/0x25f0 fs/jfs/jfs_logmgr.c:1367 open_inline_log fs/jfs/jfs_logmgr.c:1175 [inline] lmLogOpen+0xc05/0x20a0 fs/jfs/jfs_logmgr.c:1069 jfs_mount_rw+0xf2/0x9f0 fs/jfs/jfs_mount.c:257 jfs_fill_super+0x77e/0x1310 fs/jfs/super.c:565 mount_bdev+0x39a/0x520 fs/super.c:1679 jfs_do_mount+0x4d/0x60 fs/jfs/super.c:670 legacy_get_tree+0x114/0x290 fs/fs_context.c:662 vfs_get_tree+0xb1/0x5a0 fs/super.c:1800 do_new_mount+0x71f/0x15e0 fs/namespace.c:3472 path_mount+0x742/0x1f10 fs/namespace.c:3799 do_mount fs/namespace.c:3812 [inline] __do_sys_mount fs/namespace.c:4020 [inline] __se_sys_mount+0x722/0x810 fs/namespace.c:3997 __x64_sys_mount+0xe4/0x150 fs/namespace.c:3997 x64_sys_call+0x255a/0x3ba0 arch/x86/include/generated/asm/syscalls_64.h:166 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 Local variable lrd created at: lmLogInit+0x41/0x25f0 fs/jfs/jfs_logmgr.c:1243 open_inline_log fs/jfs/jfs_logmgr.c:1175 [inline] lmLogOpen+0xc05/0x20a0 fs/jfs/jfs_logmgr.c:1069 CPU: 0 UID: 0 PID: 7208 Comm: syz.0.381 Not tainted 6.11.0-rc7-syzkaller-00151-gd42f7708e27c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024 =====================================================