loop0: detected capacity change from 0 to 32768 ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dmap.c:2248:2 index 2000 is out of range for type 's64[128]' (aka 'long long[128]') CPU: 1 PID: 6556 Comm: syz-executor.0 Not tainted 6.6.0-rc7-syzkaller-00089-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 dump_stack+0x1c/0x28 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:217 [inline] __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:348 dbAllocBits+0x8a4/0x8d0 fs/jfs/jfs_dmap.c:2248 dbAllocDmap fs/jfs/jfs_dmap.c:2025 [inline] dbAllocNear+0x224/0x334 fs/jfs/jfs_dmap.c:1251 dbAlloc+0x8b4/0xb68 fs/jfs/jfs_dmap.c:836 ea_get+0x6f8/0xef0 fs/jfs/xattr.c:514 __jfs_setxattr+0x41c/0x12f8 fs/jfs/xattr.c:718 __jfs_set_acl+0x108/0x1a4 fs/jfs/acl.c:87 jfs_set_acl+0x20c/0x43c fs/jfs/acl.c:115 set_posix_acl fs/posix_acl.c:956 [inline] vfs_set_acl+0x728/0x94c fs/posix_acl.c:1135 do_set_acl+0xe4/0x1ac fs/posix_acl.c:1280 do_setxattr fs/xattr.c:627 [inline] setxattr+0x230/0x29c fs/xattr.c:653 path_setxattr+0x17c/0x258 fs/xattr.c:672 __do_sys_lsetxattr fs/xattr.c:695 [inline] __se_sys_lsetxattr fs/xattr.c:691 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:691 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 ================================================================================ ================================================================== BUG: KASAN: slab-use-after-free in dbAllocBits+0x7a8/0x8d0 fs/jfs/jfs_dmap.c:2248 Read of size 8 at addr ffff0000c6971eb8 by task syz-executor.0/6556 CPU: 1 PID: 6556 Comm: syz-executor.0 Not tainted 6.6.0-rc7-syzkaller-00089-g8de1e7afcc1c #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/09/2023 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:233 show_stack+0x2c/0x44 arch/arm64/kernel/stacktrace.c:240 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xd0/0x124 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:364 [inline] print_report+0x174/0x514 mm/kasan/report.c:475 kasan_report+0xd8/0x138 mm/kasan/report.c:588 __asan_report_load8_noabort+0x20/0x2c mm/kasan/report_generic.c:381 dbAllocBits+0x7a8/0x8d0 fs/jfs/jfs_dmap.c:2248 dbAllocDmap fs/jfs/jfs_dmap.c:2025 [inline] dbAllocNear+0x224/0x334 fs/jfs/jfs_dmap.c:1251 dbAlloc+0x8b4/0xb68 fs/jfs/jfs_dmap.c:836 ea_get+0x6f8/0xef0 fs/jfs/xattr.c:514 __jfs_setxattr+0x41c/0x12f8 fs/jfs/xattr.c:718 __jfs_set_acl+0x108/0x1a4 fs/jfs/acl.c:87 jfs_set_acl+0x20c/0x43c fs/jfs/acl.c:115 set_posix_acl fs/posix_acl.c:956 [inline] vfs_set_acl+0x728/0x94c fs/posix_acl.c:1135 do_set_acl+0xe4/0x1ac fs/posix_acl.c:1280 do_setxattr fs/xattr.c:627 [inline] setxattr+0x230/0x29c fs/xattr.c:653 path_setxattr+0x17c/0x258 fs/xattr.c:672 __do_sys_lsetxattr fs/xattr.c:695 [inline] __se_sys_lsetxattr fs/xattr.c:691 [inline] __arm64_sys_lsetxattr+0xbc/0xd8 fs/xattr.c:691 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Allocated by task 6569: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:511 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:188 [inline] slab_post_alloc_hook+0x90/0x4a0 mm/slab.h:762 slab_alloc_node mm/slub.c:3478 [inline] slab_alloc mm/slub.c:3486 [inline] __kmem_cache_alloc_lru mm/slub.c:3493 [inline] kmem_cache_alloc+0x29c/0x424 mm/slub.c:3502 getname_flags+0xd0/0x48c fs/namei.c:140 getname+0x28/0x38 fs/namei.c:219 do_sys_openat2+0xd0/0x1b8 fs/open.c:1416 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1448 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Freed by task 6569: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x7c mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:522 ____kasan_slab_free+0x144/0x1c0 mm/kasan/common.c:236 __kasan_slab_free+0x18/0x28 mm/kasan/common.c:244 kasan_slab_free include/linux/kasan.h:164 [inline] slab_free_hook mm/slub.c:1800 [inline] slab_free_freelist_hook mm/slub.c:1826 [inline] slab_free mm/slub.c:3809 [inline] kmem_cache_free+0x2e4/0x56c mm/slub.c:3831 putname+0x11c/0x180 fs/namei.c:274 do_sys_openat2+0x164/0x1b8 fs/open.c:1430 do_sys_open fs/open.c:1437 [inline] __do_sys_openat fs/open.c:1453 [inline] __se_sys_openat fs/open.c:1448 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1448 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 The buggy address belongs to the object at ffff0000c6971100 which belongs to the cache names_cache of size 4096 The buggy address is located 3512 bytes inside of freed 4096-byte region [ffff0000c6971100, ffff0000c6972100) The buggy address belongs to the physical page: page:00000000c7c9c37a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x106970 head:00000000c7c9c37a order:3 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000840 ffff0000c185b8c0 dead000000000122 0000000000000000 raw: 0000000000000000 0000000000070007 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000c6971d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c6971e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000c6971e80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000c6971f00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000c6971f80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== JFS: metapage_get_blocks failed ERROR: (device loop0): release_metapage: metapage_write_one() failed ERROR: (device loop0): remounting filesystem as read-only