[v6.1] UBSAN: array-index-out-of-bounds in jfs_readdir
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syzbot
Mar 31, 2024, 8:16:26 PMMar 31
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: e5cd595e23c1 Linux 6.1.83
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15b7cde5180000
kernel config: https://syzkaller.appspot.com/x/.config?x=638c7154137d2582
dashboard link: https://syzkaller.appspot.com/bug?extid=d9da34bfc308d1389b46
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a9b3de36bd43/disk-e5cd595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2af9bc6e6ea4/vmlinux-e5cd595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f58381bafc0/Image-e5cd595e.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d9da34...@syzkaller.appspotmail.com
================================================================================
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: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
jfs_readdir+0x1580/0x37bc fs/jfs/jfs_dtree.c:2892
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
================================================================================
================================================================================
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: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
add_missing_indices fs/jfs/jfs_dtree.c:2647 [inline]
jfs_readdir+0x1dfc/0x37bc fs/jfs/jfs_dtree.c:3009
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
================================================================================
================================================================================
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: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
diWrite+0xbcc/0x15cc fs/jfs/jfs_imap.c:750
txCommit+0x750/0x5574 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
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
================================================================================
================================================================================
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: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
diWrite+0xc24/0x15cc fs/jfs/jfs_imap.c:750
txCommit+0x750/0x5574 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
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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: use-after-free in diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
Read of size 32 at addr ffff0000f8c1ac10 by task syz-executor.0/13869
CPU: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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:284 [inline]
print_report+0x174/0x4c0 mm/kasan/report.c:395
kasan_report+0xd4/0x130 mm/kasan/report.c:495
kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189
memcpy+0x48/0x90 mm/kasan/shadow.c:65
diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
txCommit+0x750/0x5574 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
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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 12791:
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]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1ac/0x2f8 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x68/0x1d0 fs/inode.c:1020
new_inode+0x38/0x174 fs/inode.c:1048
diReadSpecial+0x58/0x5a0 fs/jfs/jfs_imap.c:423
jfs_mount+0x88/0x7a8 fs/jfs/jfs_mount.c:87
jfs_fill_super+0x464/0x9f0 fs/jfs/super.c:556
mount_bdev+0x274/0x370 fs/super.c:1432
jfs_do_mount+0x44/0x58 fs/jfs/super.c:670
legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
vfs_get_tree+0x90/0x274 fs/super.c:1562
do_new_mount+0x278/0x8fc fs/namespace.c:3051
path_mount+0x590/0xe5c fs/namespace.c:3381
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount fs/namespace.c:3579 [inline]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
Last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2844
destroy_inode fs/inode.c:316 [inline]
evict+0x5fc/0x68c fs/inode.c:681
iput_final fs/inode.c:1791 [inline]
iput+0x7c0/0x8a4 fs/inode.c:1817
diFreeSpecial+0x78/0x108 fs/jfs/jfs_imap.c:549
jfs_umount+0x1ac/0x338 fs/jfs/jfs_umount.c:83
jfs_put_super+0x90/0x188 fs/jfs/super.c:194
generic_shutdown_super+0x130/0x328 fs/super.c:501
kill_block_super+0x70/0xdc fs/super.c:1459
deactivate_locked_super+0xac/0x124 fs/super.c:332
deactivate_super+0xf0/0x110 fs/super.c:363
cleanup_mnt+0x394/0x41c fs/namespace.c:1186
__cleanup_mnt+0x20/0x30 fs/namespace.c:1193
task_work_run+0x240/0x2f0 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Second to last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2844
destroy_inode fs/inode.c:316 [inline]
evict+0x5fc/0x68c fs/inode.c:681
dispose_list fs/inode.c:699 [inline]
evict_inodes+0x6b4/0x74c fs/inode.c:749
generic_shutdown_super+0x9c/0x328 fs/super.c:480
kill_block_super+0x70/0xdc fs/super.c:1459
deactivate_locked_super+0xac/0x124 fs/super.c:332
deactivate_super+0xf0/0x110 fs/super.c:363
cleanup_mnt+0x394/0x41c fs/namespace.c:1186
__cleanup_mnt+0x20/0x30 fs/namespace.c:1193
task_work_run+0x240/0x2f0 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
The buggy address belongs to the object at ffff0000f8c1a500
which belongs to the cache jfs_ip of size 2240
The buggy address is located 1808 bytes inside of
2240-byte region [ffff0000f8c1a500, ffff0000f8c1adc0)
The buggy address belongs to the physical page:
page:00000000a89389ee refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x138c18
head:00000000a89389ee order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000f00e0f01
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6f25b00
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000f00e0f01
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000f8c1ab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000f8c1ab80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000f8c1ac00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000f8c1ac80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000f8c1ad00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
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If the report is already addressed, let syzbot know by replying with:
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If you want to overwrite report's subsystems, reply with:
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If the report is a duplicate of another one, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot found the following issue on:
HEAD commit: e5cd595e23c1 Linux 6.1.83
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=15b7cde5180000
kernel config: https://syzkaller.appspot.com/x/.config?x=638c7154137d2582
dashboard link: https://syzkaller.appspot.com/bug?extid=d9da34bfc308d1389b46
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a9b3de36bd43/disk-e5cd595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2af9bc6e6ea4/vmlinux-e5cd595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f58381bafc0/Image-e5cd595e.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d9da34...@syzkaller.appspotmail.com
================================================================================
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: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
jfs_readdir+0x1580/0x37bc fs/jfs/jfs_dtree.c:2892
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
================================================================================
================================================================================
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: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
add_missing_indices fs/jfs/jfs_dtree.c:2647 [inline]
jfs_readdir+0x1dfc/0x37bc fs/jfs/jfs_dtree.c:3009
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
================================================================================
================================================================================
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: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
diWrite+0xbcc/0x15cc fs/jfs/jfs_imap.c:750
txCommit+0x750/0x5574 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
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
================================================================================
================================================================================
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: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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/0x5c lib/dump_stack.c:113
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0xfc/0x148 lib/ubsan.c:282
diWrite+0xc24/0x15cc fs/jfs/jfs_imap.c:750
txCommit+0x750/0x5574 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
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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: use-after-free in diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
Read of size 32 at addr ffff0000f8c1ac10 by task syz-executor.0/13869
CPU: 0 PID: 13869 Comm: syz-executor.0 Not tainted 6.1.83-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
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:284 [inline]
print_report+0x174/0x4c0 mm/kasan/report.c:395
kasan_report+0xd4/0x130 mm/kasan/report.c:495
kasan_check_range+0x264/0x2a4 mm/kasan/generic.c:189
memcpy+0x48/0x90 mm/kasan/shadow.c:65
diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
txCommit+0x750/0x5574 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
iterate_dir+0x1f4/0x4e4
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__arm64_sys_getdents64+0x1c4/0x4a0 fs/readdir.c:354
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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 12791:
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]
slab_alloc mm/slub.c:3406 [inline]
__kmem_cache_alloc_lru mm/slub.c:3413 [inline]
kmem_cache_alloc_lru+0x1ac/0x2f8 mm/slub.c:3429
alloc_inode_sb include/linux/fs.h:3193 [inline]
jfs_alloc_inode+0x2c/0x68 fs/jfs/super.c:105
alloc_inode fs/inode.c:261 [inline]
new_inode_pseudo+0x68/0x1d0 fs/inode.c:1020
new_inode+0x38/0x174 fs/inode.c:1048
diReadSpecial+0x58/0x5a0 fs/jfs/jfs_imap.c:423
jfs_mount+0x88/0x7a8 fs/jfs/jfs_mount.c:87
jfs_fill_super+0x464/0x9f0 fs/jfs/super.c:556
mount_bdev+0x274/0x370 fs/super.c:1432
jfs_do_mount+0x44/0x58 fs/jfs/super.c:670
legacy_get_tree+0xd4/0x16c fs/fs_context.c:632
vfs_get_tree+0x90/0x274 fs/super.c:1562
do_new_mount+0x278/0x8fc fs/namespace.c:3051
path_mount+0x590/0xe5c fs/namespace.c:3381
do_mount fs/namespace.c:3394 [inline]
__do_sys_mount fs/namespace.c:3602 [inline]
__se_sys_mount fs/namespace.c:3579 [inline]
__arm64_sys_mount+0x45c/0x594 fs/namespace.c:3579
__invoke_syscall arch/arm64/kernel/syscall.c:38 [inline]
invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52
el0_svc_common+0x138/0x258 arch/arm64/kernel/syscall.c:142
do_el0_svc+0x64/0x218 arch/arm64/kernel/syscall.c:206
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
Last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2844
destroy_inode fs/inode.c:316 [inline]
evict+0x5fc/0x68c fs/inode.c:681
iput_final fs/inode.c:1791 [inline]
iput+0x7c0/0x8a4 fs/inode.c:1817
diFreeSpecial+0x78/0x108 fs/jfs/jfs_imap.c:549
jfs_umount+0x1ac/0x338 fs/jfs/jfs_umount.c:83
jfs_put_super+0x90/0x188 fs/jfs/super.c:194
generic_shutdown_super+0x130/0x328 fs/super.c:501
kill_block_super+0x70/0xdc fs/super.c:1459
deactivate_locked_super+0xac/0x124 fs/super.c:332
deactivate_super+0xf0/0x110 fs/super.c:363
cleanup_mnt+0x394/0x41c fs/namespace.c:1186
__cleanup_mnt+0x20/0x30 fs/namespace.c:1193
task_work_run+0x240/0x2f0 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
Second to last potentially related work creation:
kasan_save_stack+0x40/0x70 mm/kasan/common.c:45
__kasan_record_aux_stack+0xcc/0xe8 mm/kasan/generic.c:486
kasan_record_aux_stack_noalloc+0x14/0x20 mm/kasan/generic.c:496
call_rcu+0xfc/0xa40 kernel/rcu/tree.c:2844
destroy_inode fs/inode.c:316 [inline]
evict+0x5fc/0x68c fs/inode.c:681
dispose_list fs/inode.c:699 [inline]
evict_inodes+0x6b4/0x74c fs/inode.c:749
generic_shutdown_super+0x9c/0x328 fs/super.c:480
kill_block_super+0x70/0xdc fs/super.c:1459
deactivate_locked_super+0xac/0x124 fs/super.c:332
deactivate_super+0xf0/0x110 fs/super.c:363
cleanup_mnt+0x394/0x41c fs/namespace.c:1186
__cleanup_mnt+0x20/0x30 fs/namespace.c:1193
task_work_run+0x240/0x2f0 kernel/task_work.c:179
resume_user_mode_work include/linux/resume_user_mode.h:49 [inline]
do_notify_resume+0x2148/0x3474 arch/arm64/kernel/signal.c:1132
prepare_exit_to_user_mode arch/arm64/kernel/entry-common.c:137 [inline]
exit_to_user_mode arch/arm64/kernel/entry-common.c:142 [inline]
el0_svc+0x9c/0x168 arch/arm64/kernel/entry-common.c:638
el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655
el0t_64_sync+0x18c/0x190 arch/arm64/kernel/entry.S:585
The buggy address belongs to the object at ffff0000f8c1a500
which belongs to the cache jfs_ip of size 2240
The buggy address is located 1808 bytes inside of
2240-byte region [ffff0000f8c1a500, ffff0000f8c1adc0)
The buggy address belongs to the physical page:
page:00000000a89389ee refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x138c18
head:00000000a89389ee order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000f00e0f01
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c6f25b00
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000f00e0f01
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000f8c1ab00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000f8c1ab80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
>ffff0000f8c1ac00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
^
ffff0000f8c1ac80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
ffff0000f8c1ad00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
---
This report is generated by a bot. It may contain errors.
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syzbot
Mar 31, 2024, 8:20:31 PMMar 31
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 9465fef4ae35 Linux 5.15.153
syzbot found the following issue on:
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=116c20f6180000
kernel config: https://syzkaller.appspot.com/x/.config?x=74ff83133fa97f6c
dashboard link: https://syzkaller.appspot.com/bug?extid=86aff299c9c99b870520
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3c82fda40b43/disk-9465fef4.raw.xz
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
vmlinux: https://storage.googleapis.com/syzbot-assets/ec13893dc103/vmlinux-9465fef4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7b44910e5283/Image-9465fef4.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
loop4: detected capacity change from 0 to 32768
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3190:30
index -1 is out of range for type 'struct dtslot[128]'
CPU: 1 PID: 6138 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
Call trace:
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
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282
jfs_readdir+0x16a4/0x385c fs/jfs/jfs_dtree.c:3190
iterate_dir+0x1f4/0x4e4
__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
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__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
================================================================================
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:2945:28
index -1 is out of range for type 'struct dtslot[128]'
CPU: 1 PID: 6138 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
Call trace:
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
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282
add_missing_indices fs/jfs/jfs_dtree.c:2945 [inline]
jfs_readdir+0x1f54/0x385c fs/jfs/jfs_dtree.c:3307
iterate_dir+0x1f4/0x4e4
__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
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__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
================================================================================
================================================================================
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: 6138 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0
================================================================================
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]'
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
Call trace:
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
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282
diWrite+0xbcc/0x1604 fs/jfs/jfs_imap.c:750
txCommit+0x754/0x55b0 fs/jfs/jfs_txnmgr.c:1255
add_missing_indices fs/jfs/jfs_dtree.c:2959 [inline]
jfs_readdir+0x1fd0/0x385c fs/jfs/jfs_dtree.c:3307
iterate_dir+0x1f4/0x4e4
__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
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__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
================================================================================
================================================================================
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: 6138 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0
================================================================================
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]'
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
Call trace:
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
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
ubsan_epilogue lib/ubsan.c:151 [inline]
__ubsan_handle_out_of_bounds+0x108/0x15c lib/ubsan.c:282
diWrite+0xc24/0x1604 fs/jfs/jfs_imap.c:750
txCommit+0x754/0x55b0 fs/jfs/jfs_txnmgr.c:1255
add_missing_indices fs/jfs/jfs_dtree.c:2959 [inline]
jfs_readdir+0x1fd0/0x385c fs/jfs/jfs_dtree.c:3307
iterate_dir+0x1f4/0x4e4
__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
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__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: slab-out-of-bounds in diWrite+0xb48/0x1604 fs/jfs/jfs_imap.c:750
Read of size 32 at addr ffff0000deb45110 by task syz-executor.4/6138
CPU: 0 PID: 6138 Comm: syz-executor.4 Not tainted 5.15.153-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024
Call trace:
dump_backtrace+0x0/0x530 arch/arm64/kernel/stacktrace.c:152
Call trace:
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
dump_stack_lvl+0x108/0x170 lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:434 [inline]
kasan_report+0x174/0x1e4 mm/kasan/report.c:451
kasan_check_range+0x274/0x2b4 mm/kasan/generic.c:189
memcpy+0x90/0xe8 mm/kasan/shadow.c:65
diWrite+0xb48/0x1604 fs/jfs/jfs_imap.c:750
txCommit+0x754/0x55b0 fs/jfs/jfs_txnmgr.c:1255
add_missing_indices fs/jfs/jfs_dtree.c:2959 [inline]
jfs_readdir+0x1fd0/0x385c fs/jfs/jfs_dtree.c:3307
iterate_dir+0x1f4/0x4e4
__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
__do_sys_getdents64 fs/readdir.c:369 [inline]
__se_sys_getdents64 fs/readdir.c:354 [inline]
__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 0:
(stack is not available)
The buggy address belongs to the object at ffff0000deb44a00
which belongs to the cache jfs_ip of size 2240
The buggy address is located 1808 bytes inside of
2240-byte region [ffff0000deb44a00, ffff0000deb452c0)
The buggy address is located 1808 bytes inside of
The buggy address belongs to the page:
page:000000009a7f8533 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11eb40
head:000000009a7f8533 order:3 compound_mapcount:0 compound_pincount:0
memcg:ffff0000e9d1c101
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c0b57e00
raw: 0000000000000000 00000000800d000d 00000001ffffffff ffff0000e9d1c101
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000deb45000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Memory state around the buggy address:
ffff0000deb45080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000deb45100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000deb45180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000deb45200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop4): remounting filesystem as read-only
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop4): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
syzbot
Mar 31, 2024, 8:32:22 PMMar 31
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: e5cd595e23c1 Linux 6.1.83
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=11f9c3d9180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11815795180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a9b3de36bd43/disk-e5cd595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2af9bc6e6ea4/vmlinux-e5cd595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f58381bafc0/Image-e5cd595e.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/c5c1a9f8645c/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d9da34...@syzkaller.appspotmail.com
loop0: detected capacity change from 0 to 32768
CPU: 0 PID: 4220 Comm: syz-executor108 Not tainted 6.1.83-syzkaller #0
CPU: 0 PID: 4220 Comm: syz-executor108 Not tainted 6.1.83-syzkaller #0
CPU: 0 PID: 4220 Comm: syz-executor108 Not tainted 6.1.83-syzkaller #0
BUG: KASAN: slab-out-of-bounds in diWrite+0xb48/0x15cc fs/jfs/jfs_imap.c:750
Read of size 32 at addr ffff0000e2d15110 by task syz-executor108/4220
CPU: 0 PID: 4220 Comm: syz-executor108 Not tainted 6.1.83-syzkaller #0
The buggy address belongs to the object at ffff0000e2d14a00
The buggy address belongs to the physical page:
page:000000005f409038 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x122d10
head:000000005f409038 order:3 compound_mapcount:0 compound_pincount:0
raw: 0000000000000000 00000000800d000d 00000001ffffffff 0000000000000000
ffff0000e2d15080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000e2d15100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000e2d15180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000e2d15200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
HEAD commit: e5cd595e23c1 Linux 6.1.83
git tree: linux-6.1.y
kernel config: https://syzkaller.appspot.com/x/.config?x=638c7154137d2582
dashboard link: https://syzkaller.appspot.com/bug?extid=d9da34bfc308d1389b46
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17da85b1180000
dashboard link: https://syzkaller.appspot.com/bug?extid=d9da34bfc308d1389b46
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11815795180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/a9b3de36bd43/disk-e5cd595e.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/2af9bc6e6ea4/vmlinux-e5cd595e.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7f58381bafc0/Image-e5cd595e.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+d9da34...@syzkaller.appspotmail.com
================================================================================
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: 0 PID: 4220 Comm: syz-executor108 Not tainted 6.1.83-syzkaller #0
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]'
Read of size 32 at addr ffff0000e2d15110 by task syz-executor108/4220
CPU: 0 PID: 4220 Comm: syz-executor108 Not tainted 6.1.83-syzkaller #0
which belongs to the cache jfs_ip of size 2240
The buggy address is located 1808 bytes inside of
2240-byte region [ffff0000e2d14a00, ffff0000e2d152c0)
The buggy address is located 1808 bytes inside of
The buggy address belongs to the physical page:
head:000000005f409038 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c7412f00
raw: 0000000000000000 00000000800d000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000e2d15000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Memory state around the buggy address:
ffff0000e2d15080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000e2d15100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000e2d15180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000e2d15200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
---
If you want syzbot to run the reproducer, reply with:
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
---
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
syzbot
Apr 1, 2024, 12:29:28 AMApr 1
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 9465fef4ae35 Linux 5.15.153
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12e4292d180000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12582129180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3c82fda40b43/disk-9465fef4.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ec13893dc103/vmlinux-9465fef4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7b44910e5283/Image-9465fef4.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/99b0a2e3a09b/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+86aff2...@syzkaller.appspotmail.com
loop0: detected capacity change from 0 to 32768
CPU: 1 PID: 3958 Comm: syz-executor101 Not tainted 5.15.153-syzkaller #0
CPU: 1 PID: 3958 Comm: syz-executor101 Not tainted 5.15.153-syzkaller #0
CPU: 1 PID: 3958 Comm: syz-executor101 Not tainted 5.15.153-syzkaller #0
Read of size 32 at addr ffff0000df8e5110 by task syz-executor101/3958
CPU: 1 PID: 3958 Comm: syz-executor101 Not tainted 5.15.153-syzkaller #0
The buggy address belongs to the object at ffff0000df8e4a00
head:00000000b0f34806 order:3 compound_mapcount:0 compound_pincount:0
ffff0000df8e5080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000df8e5100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000df8e5180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000df8e5200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
---
HEAD commit: 9465fef4ae35 Linux 5.15.153
git tree: linux-5.15.y
kernel config: https://syzkaller.appspot.com/x/.config?x=74ff83133fa97f6c
dashboard link: https://syzkaller.appspot.com/bug?extid=86aff299c9c99b870520
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1733f2b5180000
dashboard link: https://syzkaller.appspot.com/bug?extid=86aff299c9c99b870520
compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40
userspace arch: arm64
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=12582129180000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/3c82fda40b43/disk-9465fef4.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/ec13893dc103/vmlinux-9465fef4.xz
kernel image: https://storage.googleapis.com/syzbot-assets/7b44910e5283/Image-9465fef4.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+86aff2...@syzkaller.appspotmail.com
================================================================================
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3190:30
index -1 is out of range for type 'struct dtslot[128]'
CPU: 1 PID: 3958 Comm: syz-executor101 Not tainted 5.15.153-syzkaller #0
UBSAN: array-index-out-of-bounds in fs/jfs/jfs_dtree.c:3190:30
index -1 is out of range for type 'struct dtslot[128]'
CPU: 1 PID: 3958 Comm: syz-executor101 Not tainted 5.15.153-syzkaller #0
which belongs to the cache jfs_ip of size 2240
The buggy address is located 1808 bytes inside of
2240-byte region [ffff0000df8e4a00, ffff0000df8e52c0)
The buggy address is located 1808 bytes inside of
The buggy address belongs to the page:
page:00000000b0f34806 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x11f8e0
head:00000000b0f34806 order:3 compound_mapcount:0 compound_pincount:0
flags: 0x5ffc00000010200(slab|head|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000010200 0000000000000000 dead000000000122 ffff0000c650b380
raw: 0000000000000000 00000000800d000d 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000df8e5000: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
Memory state around the buggy address:
ffff0000df8e5080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000df8e5100: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
^
ffff0000df8e5180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000df8e5200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
==================================================================
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 0
ERROR: (device loop0): remounting filesystem as read-only
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 1
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 2
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 3
ERROR: (device loop0): jfs_readdir: JFS:Dtree error: ino = 2, bn=0, index = 4
---
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