=====================================================
BUG: KMSAN: use-after-free in crc32_be_base+0x215/0x270 lib/crc32.c:123
 crc32_be_base+0x215/0x270 lib/crc32.c:123
 crc32_be_arch+0x3f/0x50 arch/x86/lib/crc32.c:77
 crc32_be include/linux/crc32.h:25 [inline]
 sw842_compress+0x45db/0x4fa0 lib/842/842_compress.c:584
 crypto842_scompress+0x4e/0x70 crypto/842.c:46
 scomp_acomp_comp_decomp+0xa49/0x1120 include/crypto/internal/scompress.h:-1
 scomp_acomp_compress+0x33/0x40 crypto/scompress.c:282
 crypto_acomp_compress+0x5b4/0xe80 crypto/acompress.c:291
 zswap_compress mm/zswap.c:977 [inline]
 zswap_store_page mm/zswap.c:1495 [inline]
 zswap_store+0x21db/0x44f0 mm/zswap.c:1604
 swap_writeout+0x8b5/0x1360 mm/page_io.c:277
 shmem_writeout+0x2017/0x20f0 mm/shmem.c:1645
 pageout mm/vmscan.c:720 [inline]
 shrink_folio_list+0x5b75/0x7f40 mm/vmscan.c:1452
 evict_folios+0x96ce/0xbb70 mm/vmscan.c:4731
 try_to_shrink_lruvec+0xd87/0x1260 mm/vmscan.c:4892
 lru_gen_shrink_lruvec mm/vmscan.c:5041 [inline]
 shrink_lruvec+0x46f/0x4f30 mm/vmscan.c:5797
 shrink_node_memcgs mm/vmscan.c:6033 [inline]
 shrink_node+0x1113/0x54a0 mm/vmscan.c:6074
 shrink_zones mm/vmscan.c:6318 [inline]
 do_try_to_free_pages+0x849/0x26b0 mm/vmscan.c:6380
 try_to_free_mem_cgroup_pages+0x3ae/0x950 mm/vmscan.c:6708
 try_charge_memcg+0x810/0x1bf0 mm/memcontrol.c:2362
 try_charge mm/memcontrol.c:2504 [inline]
 charge_memcg+0xd8/0x2b0 mm/memcontrol.c:4770
 __mem_cgroup_charge+0x71/0x2e0 mm/memcontrol.c:4787
 mem_cgroup_charge include/linux/memcontrol.h:652 [inline]
 shmem_alloc_and_add_folio+0xedd/0x1ca0 mm/shmem.c:1900
 shmem_get_folio_gfp+0xad3/0x1fb0 mm/shmem.c:2532
 shmem_read_folio_gfp+0x85/0x150 mm/shmem.c:5927
 drm_gem_get_pages+0x3ae/0x14e0 drivers/gpu/drm/drm_gem.c:594
 drm_gem_shmem_get_pages_locked+0x1d2/0x4e0 drivers/gpu/drm/drm_gem_shmem_helper.c:200
 drm_gem_shmem_pin_locked+0x2b3/0x580 drivers/gpu/drm/drm_gem_shmem_helper.c:261
 drm_gem_shmem_vmap_locked+0x4d0/0x7e0 drivers/gpu/drm/drm_gem_shmem_helper.c:363
 drm_gem_shmem_object_vmap+0x36/0x50 include/drm/drm_gem_shmem_helper.h:243
 drm_gem_vmap_locked drivers/gpu/drm/drm_gem.c:1228 [inline]
 drm_gem_vmap+0xba/0x1e0 drivers/gpu/drm/drm_gem.c:1270
 drm_gem_fb_vmap+0x104/0x560 drivers/gpu/drm/drm_gem_framebuffer_helper.c:365
 vkms_prepare_fb+0x119/0x170 drivers/gpu/drm/vkms/vkms_plane.c:166
 drm_atomic_helper_prepare_planes+0x4b2/0x1290 drivers/gpu/drm/drm_atomic_helper.c:2638
 drm_atomic_helper_commit+0x1f4/0x1020 drivers/gpu/drm/drm_atomic_helper.c:2067
 drm_atomic_commit+0x319/0x390 drivers/gpu/drm/drm_atomic.c:1577
 drm_atomic_helper_update_plane+0x3c2/0x650 drivers/gpu/drm/drm_atomic_helper.c:3226
 __setplane_atomic+0x342/0x3f0 drivers/gpu/drm/drm_plane.c:1100
 drm_mode_cursor_universal drivers/gpu/drm/drm_plane.c:1255 [inline]
 drm_mode_cursor_common+0x14c0/0x1e90 drivers/gpu/drm/drm_plane.c:1314
 drm_mode_cursor_ioctl+0xa2/0xd0 drivers/gpu/drm/drm_plane.c:1364
 drm_ioctl_kernel+0x46d/0x590 drivers/gpu/drm/drm_ioctl.c:796
 drm_ioctl+0xefa/0x1730 drivers/gpu/drm/drm_ioctl.c:893
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:907 [inline]
 __se_sys_ioctl+0x239/0x400 fs/ioctl.c:893
 __x64_sys_ioctl+0x97/0xe0 fs/ioctl.c:893
 x64_sys_call+0x1ebe/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:17
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

Uninit was created at:
 slab_free_hook mm/slub.c:2307 [inline]
 slab_free mm/slub.c:4643 [inline]
 kmem_cache_free+0x2a1/0xec0 mm/slub.c:4745
 putname+0x192/0x1d0 fs/namei.c:297
 do_execveat_common+0xa5a/0xdf0 fs/exec.c:1860
 do_execve fs/exec.c:1929 [inline]
 __do_sys_execve fs/exec.c:2005 [inline]
 __se_sys_execve fs/exec.c:2000 [inline]
 __x64_sys_execve+0xea/0x130 fs/exec.c:2000
 x64_sys_call+0x1789/0x3db0 arch/x86/include/generated/asm/syscalls_64.h:60
 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
 do_syscall_64+0xd9/0x210 arch/x86/entry/syscall_64.c:94
 entry_SYSCALL_64_after_hwframe+0x77/0x7f

CPU: 1 UID: 0 PID: 6862 Comm: syz.0.16 Not tainted 6.16.0-rc2-syzkaller-00318-g739a6c93cc75 #0 PREEMPT(undef) 
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025
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