... Log Wrap ... Log Wrap ... Log Wrap ... ================================================================================ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2945:28 index -128 is out of range for type 'struct dtslot[128]' CPU: 0 PID: 6049 Comm: syz.0.579 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __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+0x108/0x15c lib/ubsan.c:282 add_missing_indices+0x6e8/0xaa8 fs/jfs/jfs_dtree.c:2945 jfs_readdir+0x1948/0x3030 fs/jfs/jfs_dtree.c:3315 iterate_dir+0x1f4/0x4ec __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 ================================================================================ ================================================================== BUG: KASAN: use-after-free in add_missing_indices+0x5d8/0xaa8 fs/jfs/jfs_dtree.c:2946 Read of size 4 at addr ffff0000de303d0c by task syz.0.579/6049 CPU: 0 PID: 6049 Comm: syz.0.579 Not tainted 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call trace: dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:216 __dump_stack lib/dump_stack.c:88 [inline] dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106 print_address_description+0x7c/0x3f0 mm/kasan/report.c:248 __kasan_report mm/kasan/report.c:434 [inline] kasan_report+0x174/0x1e4 mm/kasan/report.c:451 __asan_report_load4_noabort+0x44/0x50 mm/kasan/report_generic.c:308 add_missing_indices+0x5d8/0xaa8 fs/jfs/jfs_dtree.c:2946 jfs_readdir+0x1948/0x3030 fs/jfs/jfs_dtree.c:3315 iterate_dir+0x1f4/0x4ec __do_sys_getdents64 fs/readdir.c:369 [inline] __se_sys_getdents64 fs/readdir.c:354 [inline] __arm64_sys_getdents64+0x1c4/0x4c4 fs/readdir.c:354 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Allocated by task 5730: kasan_save_stack mm/kasan/common.c:38 [inline] kasan_set_track mm/kasan/common.c:46 [inline] set_alloc_info mm/kasan/common.c:434 [inline] __kasan_slab_alloc+0x8c/0xcc mm/kasan/common.c:467 kasan_slab_alloc include/linux/kasan.h:254 [inline] slab_post_alloc_hook+0x74/0x3f4 mm/slab.h:519 slab_alloc_node mm/slub.c:3220 [inline] slab_alloc mm/slub.c:3228 [inline] kmem_cache_alloc+0x1dc/0x45c mm/slub.c:3233 jfs_alloc_inode+0x24/0x60 fs/jfs/super.c:105 alloc_inode fs/inode.c:236 [inline] iget_locked+0x180/0x720 fs/inode.c:1283 jfs_iget+0x30/0x364 fs/jfs/inode.c:29 jfs_lookup+0x1e8/0x39c fs/jfs/namei.c:1467 lookup_open fs/namei.c:3440 [inline] open_last_lookups fs/namei.c:3532 [inline] path_openat+0xd9c/0x26cc fs/namei.c:3739 do_filp_open+0x1a8/0x3b4 fs/namei.c:3769 do_sys_openat2+0x128/0x3e0 fs/open.c:1253 do_sys_open fs/open.c:1269 [inline] __do_sys_openat fs/open.c:1285 [inline] __se_sys_openat fs/open.c:1280 [inline] __arm64_sys_openat+0x1f0/0x240 fs/open.c:1280 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x58/0x14c arch/arm64/kernel/syscall.c:181 el0_svc+0x7c/0x1f0 arch/arm64/kernel/entry-common.c:608 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Last potentially related work creation: kasan_save_stack+0x38/0x68 mm/kasan/common.c:38 kasan_record_aux_stack+0xd4/0x11c mm/kasan/generic.c:348 __call_rcu kernel/rcu/tree.c:3007 [inline] call_rcu+0x118/0xb40 kernel/rcu/tree.c:3087 destroy_inode fs/inode.c:291 [inline] evict+0x7ac/0x894 fs/inode.c:637 dispose_list fs/inode.c:655 [inline] evict_inodes+0x6dc/0x774 fs/inode.c:709 generic_shutdown_super+0x9c/0x2f0 fs/super.c:454 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 tracehook_notify_resume include/linux/tracehook.h:189 [inline] do_notify_resume+0x262c/0x32b8 arch/arm64/kernel/signal.c:946 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 The buggy address belongs to the object at ffff0000de303780 which belongs to the cache jfs_ip of size 2240 The buggy address is located 1420 bytes inside of 2240-byte region [ffff0000de303780, ffff0000de304040) The buggy address belongs to the page: page:000000001304c388 refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0000de3040c0 pfn:0x11e300 head:000000001304c388 order:3 compound_mapcount:0 compound_pincount:0 memcg:ffff0000eb6ac501 flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff) raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6907380 raw: ffff0000de3040c0 00000000800d000a 00000001ffffffff ffff0000eb6ac501 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000de303c00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000de303c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000de303d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000de303d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000de303e00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ================================================================== ... Log Wrap ... Log Wrap ... Log Wrap ... ... Log Wrap ... Log Wrap ... Log Wrap ... ... Log Wrap ... Log Wrap ... Log Wrap ... ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0 ERROR: (device loop0): remounting filesystem as read-only JFS: Invalid stbl[1] = -128 for inode 2, block = 0 ------------[ cut here ]------------ kernel BUG at fs/jfs/inode.c:169! Internal error: Oops - BUG: 00000000f2000800 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 6049 Comm: syz.0.579 Tainted: G B 5.15.178-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : jfs_evict_inode+0x3b8/0x408 fs/jfs/inode.c:169 lr : jfs_evict_inode+0x3b8/0x408 fs/jfs/inode.c:169 sp : ffff80001d587450 x29: ffff80001d587450 x28: dfff800000000000 x27: 1fffe0001bc60af3 x26: 1fffe0001bc60b27 x25: 1fffe0001bc60b09 x24: ffff80000991f4c8 x23: dfff800000000000 x22: ffff0000de305848 x21: ffff800011ff7d40 x20: ffff0000de3053f8 x19: ffff0000de305770 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80000824ec08 x15: 0000000000000406 x14: ffff0000cc060000 x13: 0000000000ff0100 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : ffff0000cc060000 x8 : ffff80000991f880 x7 : 0000000000000000 x6 : ffff8000089ead18 x5 : 0000000000000000 x4 : 0000000000000000 x3 : ffff800008046154 x2 : 0000000000000001 x1 : 0000000000000000 x0 : ffff0000de305750 Call trace: jfs_evict_inode+0x3b8/0x408 fs/jfs/inode.c:169 evict+0x418/0x894 fs/inode.c:622 dispose_list fs/inode.c:655 [inline] evict_inodes+0x6dc/0x774 fs/inode.c:709 generic_shutdown_super+0x9c/0x2f0 fs/super.c:454 kill_block_super+0x70/0xdc fs/super.c:1427 deactivate_locked_super+0xb8/0x13c fs/super.c:335 deactivate_super+0x108/0x128 fs/super.c:366 cleanup_mnt+0x3c0/0x474 fs/namespace.c:1143 __cleanup_mnt+0x20/0x30 fs/namespace.c:1150 task_work_run+0x130/0x1e4 kernel/task_work.c:188 exit_task_work include/linux/task_work.h:33 [inline] do_exit+0x670/0x20bc kernel/exit.c:874 do_group_exit+0x110/0x268 kernel/exit.c:996 get_signal+0x634/0x1550 kernel/signal.c:2900 do_signal arch/arm64/kernel/signal.c:890 [inline] do_notify_resume+0x3d0/0x32b8 arch/arm64/kernel/signal.c:943 prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:133 [inline] exit_to_user_mode arch/arm64/kernel/entry-common.c:138 [inline] el0_svc+0xfc/0x1f0 arch/arm64/kernel/entry-common.c:609 el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:626 el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584 Code: aa1603e1 944ab634 17ffff75 97ae930b (d4210000) ---[ end trace 6b2fcfe6325625b7 ]---