UFO tlock:0x00000000f01cf18c ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:628:10 index 237 is out of range for type 'struct dtslot[128]' CPU: 1 PID: 7092 Comm: syz.6.462 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 ubsan_epilogue lib/ubsan.c:151 [inline] __ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282 dtSearch+0x1718/0x1f34 fs/jfs/jfs_dtree.c:628 jfs_lookup+0x164/0x39c fs/jfs/namei.c:1459 lookup_one_qstr_excl+0x108/0x230 fs/namei.c:1605 filename_create+0x230/0x468 fs/namei.c:3877 do_mkdirat+0xac/0x510 fs/namei.c:4121 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 ================================================================================ ================================================================== BUG: KASAN: slab-out-of-bounds in dtSearch+0x15c0/0x1f34 fs/jfs/jfs_dtree.c:783 Read of size 1 at addr ffff0000e5392da0 by task syz.6.462/7092 CPU: 1 PID: 7092 Comm: syz.6.462 Not tainted 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description mm/kasan/report.c:316 [inline] print_report+0x174/0x4c0 mm/kasan/report.c:427 kasan_report+0xd4/0x130 mm/kasan/report.c:531 __asan_report_load1_noabort+0x2c/0x38 mm/kasan/report_generic.c:348 dtSearch+0x15c0/0x1f34 fs/jfs/jfs_dtree.c:783 jfs_lookup+0x164/0x39c fs/jfs/namei.c:1459 lookup_one_qstr_excl+0x108/0x230 fs/namei.c:1605 filename_create+0x230/0x468 fs/namei.c:3877 do_mkdirat+0xac/0x510 fs/namei.c:4121 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 Allocated by task 9: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_alloc_info+0x24/0x30 mm/kasan/generic.c:505 __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:328 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook+0x74/0x458 mm/slab.h:737 slab_alloc_node mm/slub.c:3398 [inline] kmem_cache_alloc_node+0x258/0x3b4 mm/slub.c:3443 __alloc_skb+0x114/0x324 net/core/skbuff.c:505 alloc_skb include/linux/skbuff.h:1271 [inline] nsim_dev_trap_skb_build drivers/net/netdevsim/dev.c:748 [inline] nsim_dev_trap_report drivers/net/netdevsim/dev.c:805 [inline] nsim_dev_trap_report_work+0x1f0/0x938 drivers/net/netdevsim/dev.c:851 process_one_work+0x804/0x1484 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 Freed by task 9: kasan_save_stack mm/kasan/common.c:45 [inline] kasan_set_track+0x4c/0x80 mm/kasan/common.c:52 kasan_save_free_info+0x38/0x5c mm/kasan/generic.c:516 ____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:177 [inline] slab_free_hook mm/slub.c:1724 [inline] slab_free_freelist_hook mm/slub.c:1750 [inline] slab_free mm/slub.c:3661 [inline] kmem_cache_free+0x2f0/0x588 mm/slub.c:3683 kfree_skbmem+0x10c/0x19c __kfree_skb net/core/skbuff.c:871 [inline] consume_skb+0xa8/0x178 net/core/skbuff.c:1035 nsim_dev_trap_report drivers/net/netdevsim/dev.c:821 [inline] nsim_dev_trap_report_work+0x628/0x938 drivers/net/netdevsim/dev.c:851 process_one_work+0x804/0x1484 kernel/workqueue.c:2292 worker_thread+0x8e4/0xfec kernel/workqueue.c:2439 kthread+0x250/0x2d8 kernel/kthread.c:376 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:864 The buggy address belongs to the object at ffff0000e5392c80 which belongs to the cache skbuff_head_cache of size 240 The buggy address is located 48 bytes to the right of 240-byte region [ffff0000e5392c80, ffff0000e5392d70) The buggy address belongs to the physical page: page:000000006a763396 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x125392 flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000000200 fffffc00032dcc00 dead000000000002 ffff0000c086e000 raw: 0000000000000000 00000000000c000c 00000001ffffffff 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000e5392c80: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000e5392d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fc fc >ffff0000e5392d80: fc fc fc fc fc fc fc fc fa fb fb fb fb fb fb fb ^ ffff0000e5392e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000e5392e80: fb fb fb fb fb fb fc fc fc fc fc fc fc fc fc fc ================================================================== MetaData crosses page boundary!! lblock = 6300000010, size = -820051968 CPU: 1 PID: 7092 Comm: syz.6.462 Tainted: G B 6.1.129-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x1c8/0x1f4 arch/arm64/kernel/stacktrace.c:158 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:165 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 dump_stack+0x1c/0x58 lib/dump_stack.c:113 __get_metapage+0xb48/0x1050 fs/jfs/jfs_metapage.c:596 dtSearch+0x4e8/0x1f34 fs/jfs/jfs_dtree.c:623 jfs_lookup+0x164/0x39c fs/jfs/namei.c:1459 lookup_one_qstr_excl+0x108/0x230 fs/namei.c:1605 filename_create+0x230/0x468 fs/namei.c:3877 do_mkdirat+0xac/0x510 fs/namei.c:4121 __do_sys_mkdirat fs/namei.c:4146 [inline] __se_sys_mkdirat fs/namei.c:4144 [inline] __arm64_sys_mkdirat+0x90/0xa8 fs/namei.c:4144 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2bc arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:140 do_el0_svc+0x58/0x13c arch/arm64/kernel/syscall.c:204 el0_svc+0x58/0x168 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585 bread failed! jfs_lookup: dtSearch returned -5