loop1: detected capacity change from 0 to 32768 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3622:7 index -1 is out of range for type 'struct dtslot[128]' CPU: 1 PID: 7121 Comm: syz.1.103 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:429 dtInsertEntry+0x113c/0x1178 fs/jfs/jfs_dtree.c:3622 dtInsert+0x964/0x54f4 fs/jfs/jfs_dtree.c:891 jfs_mkdir+0x6bc/0x9f4 fs/jfs/namei.c:270 vfs_mkdir+0x27c/0x410 fs/namei.c:4184 do_mkdirat+0x248/0x574 fs/namei.c:4207 __do_sys_mkdirat fs/namei.c:4222 [inline] __se_sys_mkdirat fs/namei.c:4220 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4220 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 ---[ end trace ]--- ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:750:12 index 255 is out of range for type 'struct dtslot[128]' CPU: 0 PID: 7121 Comm: syz.1.103 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:429 diWrite+0xbcc/0x15cc fs/jfs/jfs_imap.c:750 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255 jfs_mkdir+0x808/0x9f4 fs/jfs/namei.c:290 vfs_mkdir+0x27c/0x410 fs/namei.c:4184 do_mkdirat+0x248/0x574 fs/namei.c:4207 __do_sys_mkdirat fs/namei.c:4222 [inline] __se_sys_mkdirat fs/namei.c:4220 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4220 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 ---[ end trace ]--- ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_imap.c:750:35 index 255 is out of range for type 'struct dtslot[128]' CPU: 1 PID: 7121 Comm: syz.1.103 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 dump_stack+0x1c/0x28 lib/dump_stack.c:123 ubsan_epilogue lib/ubsan.c:231 [inline] __ubsan_handle_out_of_bounds+0xf8/0x148 lib/ubsan.c:429 diWrite+0xc24/0x15cc fs/jfs/jfs_imap.c:750 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255 jfs_mkdir+0x808/0x9f4 fs/jfs/namei.c:290 vfs_mkdir+0x27c/0x410 fs/namei.c:4184 do_mkdirat+0x248/0x574 fs/namei.c:4207 __do_sys_mkdirat fs/namei.c:4222 [inline] __se_sys_mkdirat fs/namei.c:4220 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4220 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 ---[ end trace ]--- ================================================================== BUG: KASAN: slab-use-after-free in diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750 Write of size 32 at addr ffff0001014f84c0 by task syz.1.103/7121 CPU: 0 PID: 7121 Comm: syz.1.103 Not tainted 6.10.0-rc7-syzkaller-gc912bf709078 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:317 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:324 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0xe4/0x150 lib/dump_stack.c:114 print_address_description mm/kasan/report.c:377 [inline] print_report+0x198/0x538 mm/kasan/report.c:488 kasan_report+0xd8/0x138 mm/kasan/report.c:601 kasan_check_range+0x268/0x2a8 mm/kasan/generic.c:189 __asan_memcpy+0x54/0x84 mm/kasan/shadow.c:106 diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255 jfs_mkdir+0x808/0x9f4 fs/jfs/namei.c:290 vfs_mkdir+0x27c/0x410 fs/namei.c:4184 do_mkdirat+0x248/0x574 fs/namei.c:4207 __do_sys_mkdirat fs/namei.c:4222 [inline] __se_sys_mkdirat fs/namei.c:4220 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4220 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Allocated by task 5993: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_alloc_info+0x40/0x50 mm/kasan/generic.c:565 poison_kmalloc_redzone mm/kasan/common.c:370 [inline] __kasan_kmalloc+0xac/0xc4 mm/kasan/common.c:387 kasan_kmalloc include/linux/kasan.h:211 [inline] __do_kmalloc_node mm/slub.c:4123 [inline] __kmalloc_noprof+0x2a0/0x494 mm/slub.c:4136 kmalloc_noprof include/linux/slab.h:664 [inline] tomoyo_realpath_from_path+0xc8/0x4cc security/tomoyo/realpath.c:251 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1ec/0x414 security/tomoyo/file.c:771 tomoyo_file_open+0x15c/0x1ec security/tomoyo/tomoyo.c:334 security_file_open+0x74/0x66c security/security.c:2962 do_dentry_open+0x2c0/0x10a8 fs/open.c:942 vfs_open+0x48/0x2d4 fs/open.c:1086 do_open fs/namei.c:3701 [inline] path_openat+0x2224/0x2ae8 fs/namei.c:3860 do_filp_open+0x1bc/0x3cc fs/namei.c:3887 do_sys_openat2+0x124/0x1b8 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1439 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Freed by task 5993: kasan_save_stack mm/kasan/common.c:47 [inline] kasan_save_track+0x40/0x78 mm/kasan/common.c:68 kasan_save_free_info+0x54/0x6c mm/kasan/generic.c:579 poison_slab_object+0x128/0x180 mm/kasan/common.c:240 __kasan_slab_free+0x3c/0x70 mm/kasan/common.c:256 kasan_slab_free include/linux/kasan.h:184 [inline] slab_free_hook mm/slub.c:2196 [inline] slab_free mm/slub.c:4438 [inline] kfree+0x154/0x3e0 mm/slub.c:4559 tomoyo_realpath_from_path+0x484/0x4cc security/tomoyo/realpath.c:286 tomoyo_get_realpath security/tomoyo/file.c:151 [inline] tomoyo_check_open_permission+0x1ec/0x414 security/tomoyo/file.c:771 tomoyo_file_open+0x15c/0x1ec security/tomoyo/tomoyo.c:334 security_file_open+0x74/0x66c security/security.c:2962 do_dentry_open+0x2c0/0x10a8 fs/open.c:942 vfs_open+0x48/0x2d4 fs/open.c:1086 do_open fs/namei.c:3701 [inline] path_openat+0x2224/0x2ae8 fs/namei.c:3860 do_filp_open+0x1bc/0x3cc fs/namei.c:3887 do_sys_openat2+0x124/0x1b8 fs/open.c:1413 do_sys_open fs/open.c:1428 [inline] __do_sys_openat fs/open.c:1444 [inline] __se_sys_openat fs/open.c:1439 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1439 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:131 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:150 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 The buggy address belongs to the object at ffff0001014f8000 which belongs to the cache kmalloc-4k of size 4096 The buggy address is located 1216 bytes inside of freed 4096-byte region [ffff0001014f8000, ffff0001014f9000) The buggy address belongs to the physical page: page: refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1414f8 head: order:3 mapcount:0 entire_mapcount:0 nr_pages_mapped:0 pincount:0 flags: 0x5ffc00000000040(head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffefff(slab) raw: 05ffc00000000040 ffff0000c0002140 dead000000000100 dead000000000122 raw: 0000000000000000 0000000000040004 00000001ffffefff 0000000000000000 head: 05ffc00000000040 ffff0000c0002140 dead000000000100 dead000000000122 head: 0000000000000000 0000000000040004 00000001ffffefff 0000000000000000 head: 05ffc00000000003 fffffdffc4053e01 ffffffffffffffff 0000000000000000 head: 0000000000000008 0000000000000000 00000000ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0001014f8380: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0001014f8400: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0001014f8480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0001014f8500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0001014f8580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ==================================================================