[v5.15] KASAN: null-ptr-deref Read in fix_nodes
0 views
Skip to first unread message
syzbot
Apr 15, 2023, 7:10:38 PM4/15/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 4fdad925aa1a Linux 5.15.107
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12b3895bc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=d9bc1b227ee6c412
dashboard link: https://syzkaller.appspot.com/bug?extid=96a6d1aee0cb04be440a
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6a7f3b0f6a27/disk-4fdad925.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/db34418039b7/vmlinux-4fdad925.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4e96525a950a/bzImage-4fdad925.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+96a6d1...@syzkaller.appspotmail.com
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:122 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
Read of size 8 at addr 0000000000000000 by task syz-executor.4/22329
CPU: 1 PID: 22329 Comm: syz-executor.4 Not tainted 5.15.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:438 [inline]
kasan_report+0x161/0x1c0 mm/kasan/report.c:451
kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
buffer_locked include/linux/buffer_head.h:122 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2560 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x638/0xda0 fs/reiserfs/inode.c:2318
reiserfs_setattr+0xa4d/0xf90 fs/reiserfs/inode.c:3409
notify_change+0xd4d/0x1000 fs/attr.c:488
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3195 [inline]
do_open fs/namei.c:3542 [inline]
path_openat+0x28a0/0x2f20 fs/namei.c:3672
do_filp_open+0x21c/0x460 fs/namei.c:3699
do_sys_openat2+0x13b/0x500 fs/open.c:1211
do_sys_open fs/open.c:1227 [inline]
__do_sys_creat fs/open.c:1301 [inline]
__se_sys_creat fs/open.c:1295 [inline]
__x64_sys_creat+0x11f/0x160 fs/open.c:1295
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fc9972c5169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc98d816168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fc9973e5050 RCX: 00007fc9972c5169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007fc997320ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7ee3b63f R14: 00007fc98d816300 R15: 0000000000022000
</TASK>
==================================================================
---
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: 4fdad925aa1a Linux 5.15.107
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=12b3895bc80000
kernel config: https://syzkaller.appspot.com/x/.config?x=d9bc1b227ee6c412
dashboard link: https://syzkaller.appspot.com/bug?extid=96a6d1aee0cb04be440a
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/6a7f3b0f6a27/disk-4fdad925.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/db34418039b7/vmlinux-4fdad925.xz
kernel image: https://storage.googleapis.com/syzbot-assets/4e96525a950a/bzImage-4fdad925.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+96a6d1...@syzkaller.appspotmail.com
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:122 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
Read of size 8 at addr 0000000000000000 by task syz-executor.4/22329
CPU: 1 PID: 22329 Comm: syz-executor.4 Not tainted 5.15.107-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:438 [inline]
kasan_report+0x161/0x1c0 mm/kasan/report.c:451
kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
buffer_locked include/linux/buffer_head.h:122 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2560 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x638/0xda0 fs/reiserfs/inode.c:2318
reiserfs_setattr+0xa4d/0xf90 fs/reiserfs/inode.c:3409
notify_change+0xd4d/0x1000 fs/attr.c:488
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3195 [inline]
do_open fs/namei.c:3542 [inline]
path_openat+0x28a0/0x2f20 fs/namei.c:3672
do_filp_open+0x21c/0x460 fs/namei.c:3699
do_sys_openat2+0x13b/0x500 fs/open.c:1211
do_sys_open fs/open.c:1227 [inline]
__do_sys_creat fs/open.c:1301 [inline]
__se_sys_creat fs/open.c:1295 [inline]
__x64_sys_creat+0x11f/0x160 fs/open.c:1295
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fc9972c5169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc98d816168 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007fc9973e5050 RCX: 00007fc9972c5169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000080
RBP: 00007fc997320ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffe7ee3b63f R14: 00007fc98d816300 R15: 0000000000022000
</TASK>
==================================================================
---
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
Apr 17, 2023, 3:27:47 AM4/17/23
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: 0102425ac76b Linux 6.1.24
syzbot found the following issue on:
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=10a231b7c80000
kernel config: https://syzkaller.appspot.com/x/.config?x=cb976cea3176ce66
dashboard link: https://syzkaller.appspot.com/bug?extid=85ae5542a869a0e56709
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2bbac2ad18f4/disk-0102425a.raw.xz
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
vmlinux: https://storage.googleapis.com/syzbot-assets/9000ac7a5566/vmlinux-0102425a.xz
kernel image: https://storage.googleapis.com/syzbot-assets/08367306fcea/bzImage-0102425a.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
REISERFS error (device loop3): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:123 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
Read of size 8 at addr 0000000000000000 by task syz-executor.3/21105
CPU: 0 PID: 21105 Comm: syz-executor.3 Not tainted 6.1.24-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/30/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_report+0xe6/0x4f0 mm/kasan/report.c:398
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
kasan_report+0x136/0x160 mm/kasan/report.c:495
kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
buffer_locked include/linux/buffer_head.h:123 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2580 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x4d6/0x810 fs/reiserfs/inode.c:2310
reiserfs_setattr+0xc57/0x11c0 fs/reiserfs/inode.c:3395
notify_change+0xdcd/0x1080 fs/attr.c:482
do_truncate+0x21c/0x300 fs/open.c:65
do_sys_ftruncate+0x2e2/0x380 fs/open.c:193
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
RIP: 0033:0x7fbfda88c169
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fbfdb5d4168 EFLAGS: 00000246 ORIG_RAX: 000000000000004d
RAX: ffffffffffffffda RBX: 00007fbfda9ac120 RCX: 00007fbfda88c169
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000007
RBP: 00007fbfda8e7ca1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffce0e2621f R14: 00007fbfdb5d4300 R15: 0000000000022000
syzbot
May 28, 2023, 1:09:02 AM5/28/23
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 1fe619a7d252 Linux 5.15.113
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17605d1e280000
kernel config: https://syzkaller.appspot.com/x/.config?x=ab36330fd14820aa
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1203c3fe280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2d1716ac5a07/disk-1fe619a7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9e9e3ef13603/vmlinux-1fe619a7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/810a025eede3/bzImage-1fe619a7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/75dc164aabfd/mount_1.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+96a6d1...@syzkaller.appspotmail.com
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:122 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
Read of size 8 at addr 0000000000000000 by task syz-executor349/3583
CPU: 0 PID: 3583 Comm: syz-executor349 Not tainted 5.15.113-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
__se_sys_open fs/open.c:1231 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1231
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd28c4001f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fd29451d7e8 RCX: 00007fd29449ee29
RDX: 0000000000000000 RSI: 000000000014937e RDI: 0000000020000180
RBP: 00007fd29451d7e0 R08: 00007fd28c400700 R09: 0000000000000000
R10: 00007fd28c400700 R11: 0000000000000246 R12: 00007fd29451d7ec
R13: 00007ffd6edb6f1f R14: 00007fd28c400300 R15: 0000000000022000
</TASK>
==================================================================
---
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: 1fe619a7d252 Linux 5.15.113
git tree: linux-5.15.y
console output: https://syzkaller.appspot.com/x/log.txt?x=17605d1e280000
kernel config: https://syzkaller.appspot.com/x/.config?x=ab36330fd14820aa
dashboard link: https://syzkaller.appspot.com/bug?extid=96a6d1aee0cb04be440a
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=104652b9280000
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=1203c3fe280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2d1716ac5a07/disk-1fe619a7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/9e9e3ef13603/vmlinux-1fe619a7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/810a025eede3/bzImage-1fe619a7.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/75dc164aabfd/mount_1.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+96a6d1...@syzkaller.appspotmail.com
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop4): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:71 [inline]
BUG: KASAN: null-ptr-deref in test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:122 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
CPU: 0 PID: 3583 Comm: syz-executor349 Not tainted 5.15.113-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:438 [inline]
kasan_report+0x161/0x1c0 mm/kasan/report.c:451
kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
buffer_locked include/linux/buffer_head.h:122 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2560 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x638/0xda0 fs/reiserfs/inode.c:2318
reiserfs_setattr+0xa4d/0xf90 fs/reiserfs/inode.c:3409
notify_change+0xd4d/0x1000 fs/attr.c:488
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3195 [inline]
do_open fs/namei.c:3542 [inline]
path_openat+0x28a0/0x2f20 fs/namei.c:3672
do_filp_open+0x21c/0x460 fs/namei.c:3699
do_sys_openat2+0x13b/0x500 fs/open.c:1211
do_sys_open fs/open.c:1227 [inline]
__do_sys_open fs/open.c:1235 [inline]
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
__kasan_report mm/kasan/report.c:438 [inline]
kasan_report+0x161/0x1c0 mm/kasan/report.c:451
kasan_check_range+0x27e/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
buffer_locked include/linux/buffer_head.h:122 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2560 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x638/0xda0 fs/reiserfs/inode.c:2318
reiserfs_setattr+0xa4d/0xf90 fs/reiserfs/inode.c:3409
notify_change+0xd4d/0x1000 fs/attr.c:488
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3195 [inline]
do_open fs/namei.c:3542 [inline]
path_openat+0x28a0/0x2f20 fs/namei.c:3672
do_filp_open+0x21c/0x460 fs/namei.c:3699
do_sys_openat2+0x13b/0x500 fs/open.c:1211
do_sys_open fs/open.c:1227 [inline]
__se_sys_open fs/open.c:1231 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1231
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7fd29449ee29
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 61 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fd28c4001f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007fd29451d7e8 RCX: 00007fd29449ee29
RDX: 0000000000000000 RSI: 000000000014937e RDI: 0000000020000180
RBP: 00007fd29451d7e0 R08: 00007fd28c400700 R09: 0000000000000000
R10: 00007fd28c400700 R11: 0000000000000246 R12: 00007fd29451d7ec
R13: 00007ffd6edb6f1f R14: 00007fd28c400300 R15: 0000000000022000
</TASK>
==================================================================
---
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.
syzbot
Jun 3, 2023, 4:07:56 AM6/3/23
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: d2869ace6eeb Linux 6.1.31
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1622541d280000
kernel config: https://syzkaller.appspot.com/x/.config?x=623aacf949348d7d
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=116b33d1280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2ed651ed0d8f/disk-d2869ace.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b8d3199c542c/vmlinux-d2869ace.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a44812549bf7/bzImage-d2869ace.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/aff791dee10e/mount_1.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+85ae55...@syzkaller.appspotmail.com
CPU: 1 PID: 6148 Comm: syz-executor224 Not tainted 6.1.31-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
do_open fs/namei.c:3561 [inline]
path_openat+0x27e2/0x2e60 fs/namei.c:3714
do_filp_open+0x230/0x480 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_open fs/open.c:1342 [inline]
__se_sys_open fs/open.c:1338 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1338
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f30393992f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f30414947f0 RCX: 00007f304140e9e9
R10: 00007f3039399700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: d8d39a1a12346eeb R14: 4df169de990d4b77 R15: 00007f30414947f8
HEAD commit: d2869ace6eeb Linux 6.1.31
git tree: linux-6.1.y
console output: https://syzkaller.appspot.com/x/log.txt?x=1622541d280000
kernel config: https://syzkaller.appspot.com/x/.config?x=623aacf949348d7d
dashboard link: https://syzkaller.appspot.com/bug?extid=85ae5542a869a0e56709
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12c669a5280000
compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=116b33d1280000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/2ed651ed0d8f/disk-d2869ace.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/b8d3199c542c/vmlinux-d2869ace.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a44812549bf7/bzImage-d2869ace.xz
mounted in repro: https://storage.googleapis.com/syzbot-assets/aff791dee10e/mount_1.gz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+85ae55...@syzkaller.appspotmail.com
REISERFS warning: reiserfs-5093 is_leaf: item entry count seems wrong *3.5*[2 1 0(1) DIR], item_len 35, item_location 4029, free_space(entry_count) 2
REISERFS error (device loop0): vs-5150 search_by_key: invalid format found in block 540. Fsck?
==================================================================
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:123 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
Read of size 8 at addr 0000000000000000 by task syz-executor224/6148
BUG: KASAN: null-ptr-deref in instrument_atomic_read include/linux/instrumented.h:72 [inline]
BUG: KASAN: null-ptr-deref in _test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
BUG: KASAN: null-ptr-deref in buffer_locked include/linux/buffer_head.h:123 [inline]
BUG: KASAN: null-ptr-deref in fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
CPU: 1 PID: 6148 Comm: syz-executor224 Not tainted 6.1.31-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023
Call Trace:
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_report+0xe6/0x4f0 mm/kasan/report.c:398
kasan_report+0x136/0x160 mm/kasan/report.c:495
kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
buffer_locked include/linux/buffer_head.h:123 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2580 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x4d6/0x810 fs/reiserfs/inode.c:2310
reiserfs_setattr+0xc57/0x11c0 fs/reiserfs/inode.c:3395
notify_change+0xdcd/0x1080 fs/attr.c:482
do_truncate+0x21c/0x300 fs/open.c:65
handle_truncate fs/namei.c:3216 [inline]
<TASK>
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
print_report+0xe6/0x4f0 mm/kasan/report.c:398
kasan_report+0x136/0x160 mm/kasan/report.c:495
kasan_check_range+0x27f/0x290 mm/kasan/generic.c:189
instrument_atomic_read include/linux/instrumented.h:72 [inline]
_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:141 [inline]
buffer_locked include/linux/buffer_head.h:123 [inline]
fix_nodes+0x44d/0x8c70 fs/reiserfs/fix_node.c:2578
reiserfs_cut_from_item+0x463/0x2580 fs/reiserfs/stree.c:1742
reiserfs_do_truncate+0xa12/0x15b0 fs/reiserfs/stree.c:1973
reiserfs_truncate_file+0x4d6/0x810 fs/reiserfs/inode.c:2310
reiserfs_setattr+0xc57/0x11c0 fs/reiserfs/inode.c:3395
notify_change+0xdcd/0x1080 fs/attr.c:482
do_truncate+0x21c/0x300 fs/open.c:65
do_open fs/namei.c:3561 [inline]
path_openat+0x27e2/0x2e60 fs/namei.c:3714
do_filp_open+0x230/0x480 fs/namei.c:3741
do_sys_openat2+0x13b/0x500 fs/open.c:1318
do_sys_open fs/open.c:1334 [inline]
__do_sys_open fs/open.c:1342 [inline]
__se_sys_open fs/open.c:1338 [inline]
__x64_sys_open+0x221/0x270 fs/open.c:1338
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f304140e9e9
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 15 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f30393992f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f30414947f0 RCX: 00007f304140e9e9
RDX: 0000000000000000 RSI: 000000000014937e RDI: 0000000020000180
RBP: 00007f3041461410 R08: 00007f3039399700 R09: 0000000000000000
R10: 00007f3039399700 R11: 0000000000000246 R12: 0030656c69662f2e
R13: d8d39a1a12346eeb R14: 4df169de990d4b77 R15: 00007f30414947f8
syzbot
Jan 9, 2024, 1:17:08 PMJan 9
to syzkaller...@googlegroups.com
syzbot suspects this issue could be fixed by backporting the following commit:
commit e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13
git tree: upstream
Author: Peter Zijlstra <pet...@infradead.org>
Date: Wed May 31 11:58:41 2023 +0000
sched/fair: Remove sched_feat(START_DEBIT)
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15671061e80000
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
commit e0c2ff903c320d3fd3c2c604dc401b3b7c0a1d13
git tree: upstream
Author: Peter Zijlstra <pet...@infradead.org>
Date: Wed May 31 11:58:41 2023 +0000
sched/fair: Remove sched_feat(START_DEBIT)
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15671061e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=623aacf949348d7d
dashboard link: https://syzkaller.appspot.com/bug?extid=85ae5542a869a0e56709
dashboard link: https://syzkaller.appspot.com/bug?extid=85ae5542a869a0e56709
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12c669a5280000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=116b33d1280000
Please keep in mind that other backports might be required as well.
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=116b33d1280000
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
Reply all
Reply to author
Forward
0 new messages