[v5.15] KASAN: slab-out-of-bounds Read in ntfs_readdir
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syzbot
Apr 27, 2023, 4:51:45 AM4/27/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: f48aeeaaa64c Linux 5.15.109
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12cdec7fc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=6bb67251276f5711
dashboard link: https://syzkaller.appspot.com/bug?extid=7785fc7a8e502ab7376d
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d2f1a30b8031/disk-f48aeeaa.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/69b3383216cc/vmlinux-f48aeeaa.xz
kernel image: https://storage.googleapis.com/syzbot-assets/94f198d8c094/Image-f48aeeaa.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7785fc...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
Read of size 1 at addr ffff0001244e3071 by task syz-executor.5/27020
CPU: 1 PID: 27020 Comm: syz-executor.5 Not tainted 5.15.109-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
ntfs_filldir fs/ntfs/dir.c:1021 [inline]
ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Allocated by task 27020:
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_kmalloc+0xbc/0xfc mm/kasan/common.c:513
__kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x29c/0x4c8 mm/slub.c:4407
kmalloc include/linux/slab.h:596 [inline]
ntfs_readdir+0x66c/0x2748 fs/ntfs/dir.c:1162
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
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
kvfree_call_rcu+0xb8/0x684 kernel/rcu/tree.c:3559
sctp_bind_addr_clean net/sctp/bind_addr.c:131 [inline]
sctp_bind_addr_free+0x114/0x160 net/sctp/bind_addr.c:140
sctp_association_free+0x230/0x6e0 net/sctp/associola.c:358
sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline]
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1328 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
sctp_do_sm+0x316c/0x4dc4 net/sctp/sm_sideeffect.c:1170
sctp_assoc_bh_rcv+0x384/0x720 net/sctp/associola.c:1053
sctp_inq_push+0x19c/0x1c0 net/sctp/inqueue.c:80
sctp_rcv+0x1ab0/0x214c net/sctp/input.c:258
sctp4_rcv+0x4c/0x64 net/sctp/protocol.c:1155
ip_protocol_deliver_rcu+0x36c/0x770 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x1b8/0x30c net/ipv4/ip_input.c:231
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:459 [inline]
ip_rcv_finish+0x22c/0x264 net/ipv4/ip_input.c:447
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_rcv+0x78/0x98 net/ipv4/ip_input.c:566
__netif_receive_skb_one_core net/core/dev.c:5458 [inline]
__netif_receive_skb+0x18c/0x400 net/core/dev.c:5572
process_backlog+0x3ec/0x7e0 net/core/dev.c:6449
__napi_poll+0xb4/0x624 net/core/dev.c:7008
napi_poll net/core/dev.c:7075 [inline]
net_rx_action+0x500/0xc10 net/core/dev.c:7162
__do_softirq+0x344/0xe20 kernel/softirq.c:558
Second to 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
kvfree_call_rcu+0xb8/0x684 kernel/rcu/tree.c:3559
sctp_bind_addr_clean net/sctp/bind_addr.c:131 [inline]
sctp_bind_addr_free+0x114/0x160 net/sctp/bind_addr.c:140
sctp_association_free+0x230/0x6e0 net/sctp/associola.c:358
sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline]
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1328 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
sctp_do_sm+0x316c/0x4dc4 net/sctp/sm_sideeffect.c:1170
sctp_assoc_bh_rcv+0x384/0x720 net/sctp/associola.c:1053
sctp_inq_push+0x19c/0x1c0 net/sctp/inqueue.c:80
sctp_rcv+0x1ab0/0x214c net/sctp/input.c:258
sctp4_rcv+0x4c/0x64 net/sctp/protocol.c:1155
ip_protocol_deliver_rcu+0x36c/0x770 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x1b8/0x30c net/ipv4/ip_input.c:231
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:459 [inline]
ip_rcv_finish+0x22c/0x264 net/ipv4/ip_input.c:447
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_rcv+0x78/0x98 net/ipv4/ip_input.c:566
__netif_receive_skb_one_core net/core/dev.c:5458 [inline]
__netif_receive_skb+0x18c/0x400 net/core/dev.c:5572
process_backlog+0x3ec/0x7e0 net/core/dev.c:6449
__napi_poll+0xb4/0x624 net/core/dev.c:7008
napi_poll net/core/dev.c:7075 [inline]
net_rx_action+0x500/0xc10 net/core/dev.c:7162
__do_softirq+0x344/0xe20 kernel/softirq.c:558
The buggy address belongs to the object at ffff0001244e3000
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 113 bytes inside of
128-byte region [ffff0001244e3000, ffff0001244e3080)
The buggy address belongs to the page:
page:00000000dc54b85c refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0001244e3300 pfn:0x1644e3
flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000200 0000000000000000 0000000100000001 ffff0000c0002300
raw: ffff0001244e3300 000000008010000f 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0001244e2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0001244e2f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0001244e3000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
^
ffff0001244e3080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0001244e3100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: f48aeeaaa64c Linux 5.15.109
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12cdec7fc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=6bb67251276f5711
dashboard link: https://syzkaller.appspot.com/bug?extid=7785fc7a8e502ab7376d
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/d2f1a30b8031/disk-f48aeeaa.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/69b3383216cc/vmlinux-f48aeeaa.xz
kernel image: https://storage.googleapis.com/syzbot-assets/94f198d8c094/Image-f48aeeaa.gz.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7785fc...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
Read of size 1 at addr ffff0001244e3071 by task syz-executor.5/27020
CPU: 1 PID: 27020 Comm: syz-executor.5 Not tainted 5.15.109-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
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_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
ntfs_filldir fs/ntfs/dir.c:1021 [inline]
ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Allocated by task 27020:
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_kmalloc+0xbc/0xfc mm/kasan/common.c:513
__kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x29c/0x4c8 mm/slub.c:4407
kmalloc include/linux/slab.h:596 [inline]
ntfs_readdir+0x66c/0x2748 fs/ntfs/dir.c:1162
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
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
kvfree_call_rcu+0xb8/0x684 kernel/rcu/tree.c:3559
sctp_bind_addr_clean net/sctp/bind_addr.c:131 [inline]
sctp_bind_addr_free+0x114/0x160 net/sctp/bind_addr.c:140
sctp_association_free+0x230/0x6e0 net/sctp/associola.c:358
sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline]
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1328 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
sctp_do_sm+0x316c/0x4dc4 net/sctp/sm_sideeffect.c:1170
sctp_assoc_bh_rcv+0x384/0x720 net/sctp/associola.c:1053
sctp_inq_push+0x19c/0x1c0 net/sctp/inqueue.c:80
sctp_rcv+0x1ab0/0x214c net/sctp/input.c:258
sctp4_rcv+0x4c/0x64 net/sctp/protocol.c:1155
ip_protocol_deliver_rcu+0x36c/0x770 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x1b8/0x30c net/ipv4/ip_input.c:231
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:459 [inline]
ip_rcv_finish+0x22c/0x264 net/ipv4/ip_input.c:447
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_rcv+0x78/0x98 net/ipv4/ip_input.c:566
__netif_receive_skb_one_core net/core/dev.c:5458 [inline]
__netif_receive_skb+0x18c/0x400 net/core/dev.c:5572
process_backlog+0x3ec/0x7e0 net/core/dev.c:6449
__napi_poll+0xb4/0x624 net/core/dev.c:7008
napi_poll net/core/dev.c:7075 [inline]
net_rx_action+0x500/0xc10 net/core/dev.c:7162
__do_softirq+0x344/0xe20 kernel/softirq.c:558
Second to 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
kvfree_call_rcu+0xb8/0x684 kernel/rcu/tree.c:3559
sctp_bind_addr_clean net/sctp/bind_addr.c:131 [inline]
sctp_bind_addr_free+0x114/0x160 net/sctp/bind_addr.c:140
sctp_association_free+0x230/0x6e0 net/sctp/associola.c:358
sctp_cmd_delete_tcb net/sctp/sm_sideeffect.c:944 [inline]
sctp_cmd_interpreter net/sctp/sm_sideeffect.c:1328 [inline]
sctp_side_effects net/sctp/sm_sideeffect.c:1199 [inline]
sctp_do_sm+0x316c/0x4dc4 net/sctp/sm_sideeffect.c:1170
sctp_assoc_bh_rcv+0x384/0x720 net/sctp/associola.c:1053
sctp_inq_push+0x19c/0x1c0 net/sctp/inqueue.c:80
sctp_rcv+0x1ab0/0x214c net/sctp/input.c:258
sctp4_rcv+0x4c/0x64 net/sctp/protocol.c:1155
ip_protocol_deliver_rcu+0x36c/0x770 net/ipv4/ip_input.c:204
ip_local_deliver_finish+0x1b8/0x30c net/ipv4/ip_input.c:231
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_local_deliver+0x11c/0x190 net/ipv4/ip_input.c:252
dst_input include/net/dst.h:459 [inline]
ip_rcv_finish+0x22c/0x264 net/ipv4/ip_input.c:447
NF_HOOK+0x324/0x3d0 include/linux/netfilter.h:307
ip_rcv+0x78/0x98 net/ipv4/ip_input.c:566
__netif_receive_skb_one_core net/core/dev.c:5458 [inline]
__netif_receive_skb+0x18c/0x400 net/core/dev.c:5572
process_backlog+0x3ec/0x7e0 net/core/dev.c:6449
__napi_poll+0xb4/0x624 net/core/dev.c:7008
napi_poll net/core/dev.c:7075 [inline]
net_rx_action+0x500/0xc10 net/core/dev.c:7162
__do_softirq+0x344/0xe20 kernel/softirq.c:558
The buggy address belongs to the object at ffff0001244e3000
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 113 bytes inside of
128-byte region [ffff0001244e3000, ffff0001244e3080)
The buggy address belongs to the page:
page:00000000dc54b85c refcount:1 mapcount:0 mapping:0000000000000000 index:0xffff0001244e3300 pfn:0x1644e3
flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000200 0000000000000000 0000000100000001 ffff0000c0002300
raw: ffff0001244e3300 000000008010000f 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0001244e2f00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0001244e2f80: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0001244e3000: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
^
ffff0001244e3080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0001244e3100: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
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.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Jun 7, 2023, 11:53:48 AM6/7/23
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: d7af3e5ba454 Linux 5.15.115
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=108e04fd280000
kernel config: https://syzkaller.appspot.com/x/.config?x=fc49fb9fb40e8b87
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1721208b280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/648d6fb5d654/disk-d7af3e5b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a693f550ea71/vmlinux-d7af3e5b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/09afa713a569/Image-d7af3e5b.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/b336fe3ea783/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7785fc...@syzkaller.appspotmail.com
ntfs: (device loop0): load_system_files(): Failed to determine if Windows is hibernated. Will not be able to remount read-write. Run chkdsk.
CPU: 0 PID: 3968 Comm: syz-executor137 Not tainted 5.15.115-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
ffff0000cfd36080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000cfd36100: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
^
ffff0000cfd36180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000cfd36200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
If you want syzbot to run the reproducer, reply with:
#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: d7af3e5ba454 Linux 5.15.115
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=108e04fd280000
kernel config: https://syzkaller.appspot.com/x/.config?x=fc49fb9fb40e8b87
dashboard link: https://syzkaller.appspot.com/bug?extid=7785fc7a8e502ab7376d
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11d388fd280000
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
userspace arch: arm64
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1721208b280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/648d6fb5d654/disk-d7af3e5b.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/a693f550ea71/vmlinux-d7af3e5b.xz
kernel image: https://storage.googleapis.com/syzbot-assets/09afa713a569/Image-d7af3e5b.gz.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/b336fe3ea783/mount_0.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+7785fc...@syzkaller.appspotmail.com
==================================================================
BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
Read of size 1 at addr ffff0000cfd36171 by task syz-executor137/3968
BUG: KASAN: slab-out-of-bounds in ntfs_filldir fs/ntfs/dir.c:1021 [inline]
BUG: KASAN: slab-out-of-bounds in ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
CPU: 0 PID: 3968 Comm: syz-executor137 Not tainted 5.15.115-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
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_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
ntfs_filldir fs/ntfs/dir.c:1021 [inline]
ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
Allocated by task 3968:
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_load1_noabort+0x44/0x50 mm/kasan/report_generic.c:306
ntfs_filldir fs/ntfs/dir.c:1021 [inline]
ntfs_readdir+0xb60/0x2748 fs/ntfs/dir.c:1200
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
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_kmalloc+0xbc/0xfc mm/kasan/common.c:513
__kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x29c/0x4c8 mm/slub.c:4407
kmalloc include/linux/slab.h:596 [inline]
ntfs_readdir+0x66c/0x2748 fs/ntfs/dir.c:1162
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
The buggy address belongs to the object at ffff0000cfd36100
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc+0xbc/0xfc mm/kasan/common.c:513
__kasan_kmalloc+0x10/0x1c mm/kasan/common.c:522
kasan_kmalloc include/linux/kasan.h:264 [inline]
__kmalloc+0x29c/0x4c8 mm/slub.c:4407
kmalloc include/linux/slab.h:596 [inline]
ntfs_readdir+0x66c/0x2748 fs/ntfs/dir.c:1162
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
__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:596
el0t_64_sync_handler+0x84/0xe4 arch/arm64/kernel/entry-common.c:614
el0t_64_sync+0x1a0/0x1a4 arch/arm64/kernel/entry.S:584
which belongs to the cache kmalloc-128 of size 128
The buggy address is located 113 bytes inside of
128-byte region [ffff0000cfd36100, ffff0000cfd36180)
The buggy address is located 113 bytes inside of
The buggy address belongs to the page:
page:000000003e22c994 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x10fd36
flags: 0x5ffc00000000200(slab|node=0|zone=2|lastcpupid=0x7ff)
raw: 05ffc00000000200 dead000000000100 dead000000000122 ffff0000c0002300
raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
page dumped because: kasan: bad access detected
Memory state around the buggy address:
ffff0000cfd36000: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
Memory state around the buggy address:
ffff0000cfd36080: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
>ffff0000cfd36100: 00 00 00 00 00 00 00 fc fc fc fc fc fc fc fc fc
^
ffff0000cfd36180: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
ffff0000cfd36200: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
==================================================================
---
If you want syzbot to run the reproducer, reply with:
#syz test: git://repo/address.git branch-or-commit-hash
If you attach or paste a git patch, syzbot will apply it before testing.
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