loop2: detected capacity change from 0 to 32768 ------------[ cut here ]------------ UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2892:30 index -1 is out of range for type 'struct dtslot[128]' CPU: 1 PID: 7048 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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+0xf8/0x148 lib/ubsan.c:347 jfs_readdir+0x1580/0x37bc fs/jfs/jfs_dtree.c:2892 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540 iterate_dir+0x3f8/0x580 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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_dtree.c:2647:28 index -1 is out of range for type 'struct dtslot[128]' CPU: 1 PID: 7048 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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+0xf8/0x148 lib/ubsan.c:347 add_missing_indices fs/jfs/jfs_dtree.c:2647 [inline] jfs_readdir+0x1dfc/0x37bc fs/jfs/jfs_dtree.c:3009 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540 iterate_dir+0x3f8/0x580 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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: 1 PID: 7048 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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+0xf8/0x148 lib/ubsan.c:347 diWrite+0xbcc/0x15cc fs/jfs/jfs_imap.c:750 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline] jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540 iterate_dir+0x3f8/0x580 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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: 7048 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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+0xf8/0x148 lib/ubsan.c:347 diWrite+0xc24/0x15cc fs/jfs/jfs_imap.c:750 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline] jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540 iterate_dir+0x3f8/0x580 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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 Read of size 32 at addr ffff0000de8c91d0 by task syz-executor.2/7048 CPU: 1 PID: 7048 Comm: syz-executor.2 Not tainted 6.8.0-rc7-syzkaller-g707081b61156 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 Call trace: dump_backtrace+0x1b8/0x1e4 arch/arm64/kernel/stacktrace.c:291 show_stack+0x2c/0x3c arch/arm64/kernel/stacktrace.c:298 __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:377 [inline] print_report+0x178/0x518 mm/kasan/report.c:488 kasan_report+0xd8/0x138 mm/kasan/report.c:601 kasan_check_range+0x254/0x294 mm/kasan/generic.c:189 __asan_memcpy+0x3c/0x84 mm/kasan/shadow.c:105 diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750 txCommit+0x750/0x5438 fs/jfs/jfs_txnmgr.c:1255 add_missing_indices fs/jfs/jfs_dtree.c:2661 [inline] jfs_readdir+0x1e80/0x37bc fs/jfs/jfs_dtree.c:3009 wrap_directory_iterator+0xa8/0xf4 fs/readdir.c:67 shared_jfs_readdir+0x30/0x40 fs/jfs/namei.c:1540 iterate_dir+0x3f8/0x580 fs/readdir.c:110 __do_sys_getdents64 fs/readdir.c:409 [inline] __se_sys_getdents64 fs/readdir.c:394 [inline] __arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:394 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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 6188: 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:575 unpoison_slab_object mm/kasan/common.c:312 [inline] __kasan_slab_alloc+0x74/0x8c mm/kasan/common.c:338 kasan_slab_alloc include/linux/kasan.h:201 [inline] slab_post_alloc_hook mm/slub.c:3813 [inline] slab_alloc_node mm/slub.c:3860 [inline] kmem_cache_alloc+0x1dc/0x488 mm/slub.c:3867 radix_tree_node_alloc+0x184/0x360 lib/radix-tree.c:253 idr_get_free+0x234/0x89c lib/radix-tree.c:1506 idr_alloc_u32 lib/idr.c:46 [inline] idr_alloc_cyclic+0x18c/0x4f4 lib/idr.c:125 alloc_pid+0x2f4/0xa14 kernel/pid.c:236 copy_process+0x1f44/0x3478 kernel/fork.c:2513 kernel_clone+0x1d8/0x80c kernel/fork.c:2902 __do_sys_clone kernel/fork.c:3045 [inline] __se_sys_clone kernel/fork.c:3013 [inline] __arm64_sys_clone+0x1f8/0x24c kernel/fork.c:3013 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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 0: 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:589 poison_slab_object+0x124/0x18c 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:2121 [inline] slab_free mm/slub.c:4299 [inline] kmem_cache_free+0x15c/0x3d4 mm/slub.c:4363 radix_tree_node_rcu_free+0x78/0x8c lib/radix-tree.c:304 rcu_do_batch kernel/rcu/tree.c:2190 [inline] rcu_core+0x890/0x1b34 kernel/rcu/tree.c:2465 rcu_core_si+0x10/0x1c kernel/rcu/tree.c:2482 __do_softirq+0x2d8/0xce4 kernel/softirq.c:553 Last potentially related work creation: kasan_save_stack+0x40/0x6c mm/kasan/common.c:47 __kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:551 kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:561 __call_rcu_common kernel/rcu/tree.c:2715 [inline] call_rcu+0x104/0xaf4 kernel/rcu/tree.c:2829 radix_tree_node_free lib/radix-tree.c:310 [inline] delete_node+0x1ac/0x6ac lib/radix-tree.c:573 __radix_tree_delete+0x258/0x324 lib/radix-tree.c:1379 radix_tree_delete_item+0x30c/0x38c lib/radix-tree.c:1430 idr_remove+0x58/0x70 lib/idr.c:154 free_pid+0x150/0x22c kernel/pid.c:155 __change_pid+0x22c/0x290 kernel/pid.c:356 detach_pid+0x2c/0x3c kernel/pid.c:361 __unhash_process kernel/exit.c:133 [inline] __exit_signal kernel/exit.c:202 [inline] release_task+0xcbc/0x15a8 kernel/exit.c:259 wait_task_zombie kernel/exit.c:1182 [inline] wait_consider_task+0x1590/0x25ec kernel/exit.c:1409 do_wait_thread kernel/exit.c:1472 [inline] __do_wait+0x188/0x724 kernel/exit.c:1590 do_wait+0x1d8/0x550 kernel/exit.c:1624 kernel_wait4+0x24c/0x3d8 kernel/exit.c:1783 __do_sys_wait4 kernel/exit.c:1811 [inline] __se_sys_wait4 kernel/exit.c:1807 [inline] __arm64_sys_wait4+0x11c/0x2a0 kernel/exit.c:1807 __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:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 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 ffff0000de8c9080 which belongs to the cache radix_tree_node of size 576 The buggy address is located 336 bytes inside of freed 576-byte region [ffff0000de8c9080, ffff0000de8c92c0) The buggy address belongs to the physical page: page:0000000054e1b2a8 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11e8c8 head:0000000054e1b2a8 order:2 entire_mapcount:0 nr_pages_mapped:0 pincount:0 memcg:ffff0000d33ac101 flags: 0x5ffc00000000840(slab|head|node=0|zone=2|lastcpupid=0x7ff) page_type: 0xffffffff() raw: 05ffc00000000840 ffff0000c000fdc0 fffffdffc37a6000 0000000000000002 raw: 0000000000000000 0000000000170017 00000001ffffffff ffff0000d33ac101 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff0000de8c9080: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000de8c9100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb >ffff0000de8c9180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ^ ffff0000de8c9200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb ffff0000de8c9280: fb fb fb fb fb fb fb fb fc fc fc fc fc fc fc fc ================================================================== ERROR: (device loop2): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0 ERROR: (device loop2): remounting filesystem as read-only ERROR: (device loop2): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1 ERROR: (device loop2): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2 ERROR: (device loop2): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3 ERROR: (device loop2): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4