[syzbot] [block?] general protection fault in bio_first_folio

15 views
Skip to first unread message

syzbot

unread,
Dec 16, 2023, 12:20:24 AM12/16/23
to ax...@kernel.dk, linux...@vger.kernel.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com, wi...@infradead.org
Hello,

syzbot found the following issue on:

HEAD commit: abb240f7a2bd Add linux-next specific files for 20231212
git tree: linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=1673c8aee80000
kernel config: https://syzkaller.appspot.com/x/.config?x=cc2485c21b49ddc4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b23309d5788a79d3eea
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11627092e80000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13274512e80000

Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/795a3560ea0e/disk-abb240f7.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/17a88d6802ed/vmlinux-abb240f7.xz
kernel image: https://storage.googleapis.com/syzbot-assets/bfcdd0049f21/bzImage-abb240f7.xz

The issue was bisected to:

commit 1b151e2435fc3a9b10c8946c6aebe9f3e1938c55
Author: Matthew Wilcox (Oracle) <wi...@infradead.org>
Date: Mon Aug 14 14:41:00 2023 +0000

block: Remove special-casing of compound pages

bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=152f8a8ee80000
final oops: https://syzkaller.appspot.com/x/report.txt?x=172f8a8ee80000
console output: https://syzkaller.appspot.com/x/log.txt?x=132f8a8ee80000

IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+8b2330...@syzkaller.appspotmail.com
Fixes: 1b151e2435fc ("block: Remove special-casing of compound pages")

general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]
CPU: 0 PID: 5059 Comm: syz-executor696 Not tainted 6.7.0-rc5-next-20231212-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
RIP: 0010:bio_first_folio+0xcb/0x5c0 include/linux/bio.h:289
Code: 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 76 04 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6d 00 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 49 04 00 00 4d 8b 7d 08 31 ff 4d 89 fc 41 83 e4
RSP: 0018:ffffc900039ef448 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc900039ef4e8 RCX: ffffffff8444f4bd
RDX: 0000000000000001 RSI: ffffffff8444f4cb RDI: 0000000000000008
RBP: ffff88801dad0888 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801dad0800
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801dad0800
FS: 0000555556ace380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005fdeb8 CR3: 000000007c5b7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__bio_release_pages+0x9d/0x4b0 block/bio.c:1150
bio_release_pages include/linux/bio.h:508 [inline]
bio_map_user_iov+0x8ee/0xa60 block/blk-map.c:347
blk_rq_map_user_iov+0x6a5/0x1840 block/blk-map.c:663
blk_rq_map_user block/blk-map.c:690 [inline]
blk_rq_map_user_io+0x202/0x230 block/blk-map.c:723
sg_io+0x537/0xd70 drivers/scsi/scsi_ioctl.c:456
scsi_cdrom_send_packet+0x276/0x640 drivers/scsi/scsi_ioctl.c:820
scsi_ioctl+0x146/0x1840 drivers/scsi/scsi_ioctl.c:903
sg_ioctl+0xb7b/0x2760 drivers/scsi/sg.c:1163
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f9970983229
Code: 48 83 c4 28 c3 e8 37 17 00 00 0f 1f 80 00 00 00 00 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:00007ffda6357b98 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007ffda6357d68 RCX: 00007f9970983229
RDX: 0000000020000000 RSI: 0000000000005393 RDI: 0000000000000004
RBP: 00007f99709f6610 R08: 00007ffda6357d68 R09: 00007ffda6357d68
R10: 002367732f766564 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffda6357d58 R14: 0000000000000001 R15: 0000000000000001
</TASK>
Modules linked in:
---[ end trace 0000000000000000 ]---
RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
RIP: 0010:bio_first_folio+0xcb/0x5c0 include/linux/bio.h:289
Code: 48 89 ea 48 c1 ea 03 80 3c 02 00 0f 85 76 04 00 00 48 b8 00 00 00 00 00 fc ff df 4c 8b 6d 00 49 8d 7d 08 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 49 04 00 00 4d 8b 7d 08 31 ff 4d 89 fc 41 83 e4
RSP: 0018:ffffc900039ef448 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffffc900039ef4e8 RCX: ffffffff8444f4bd
RDX: 0000000000000001 RSI: ffffffff8444f4cb RDI: 0000000000000008
RBP: ffff88801dad0888 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: ffff88801dad0800
R13: 0000000000000000 R14: 0000000000000000 R15: ffff88801dad0800
FS: 0000555556ace380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00000000005fdeb8 CR3: 000000007c5b7000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
0: 48 89 ea mov %rbp,%rdx
3: 48 c1 ea 03 shr $0x3,%rdx
7: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
b: 0f 85 76 04 00 00 jne 0x487
11: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
18: fc ff df
1b: 4c 8b 6d 00 mov 0x0(%rbp),%r13
1f: 49 8d 7d 08 lea 0x8(%r13),%rdi
23: 48 89 fa mov %rdi,%rdx
26: 48 c1 ea 03 shr $0x3,%rdx
* 2a: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1) <-- trapping instruction
2e: 0f 85 49 04 00 00 jne 0x47d
34: 4d 8b 7d 08 mov 0x8(%r13),%r15
38: 31 ff xor %edi,%edi
3a: 4d 89 fc mov %r15,%r12
3d: 41 rex.B
3e: 83 .byte 0x83
3f: e4 .byte 0xe4


---
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.
For information about bisection process see: https://goo.gl/tpsmEJ#bisection

If the report is already addressed, let syzbot know by replying with:
#syz fix: exact-commit-title

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.

If you want to overwrite report's subsystems, reply with:
#syz set subsystems: new-subsystem
(See the list of subsystem names on the web dashboard)

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

Matthew Wilcox

unread,
Dec 16, 2023, 12:53:18 AM12/16/23
to syzbot, ax...@kernel.dk, linux...@vger.kernel.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com
On Fri, Dec 15, 2023 at 09:20:22PM -0800, syzbot wrote:
> Hello,
>
> syzbot found the following issue on:

Good bot.

> commit 1b151e2435fc3a9b10c8946c6aebe9f3e1938c55
> Author: Matthew Wilcox (Oracle) <wi...@infradead.org>
> Date: Mon Aug 14 14:41:00 2023 +0000
>
> block: Remove special-casing of compound pages
>
> bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=152f8a8ee80000
> final oops: https://syzkaller.appspot.com/x/report.txt?x=172f8a8ee80000
> console output: https://syzkaller.appspot.com/x/log.txt?x=132f8a8ee80000
>
> general protection fault, probably for non-canonical address 0xdffffc0000000001: 0000 [#1] PREEMPT SMP KASAN
> KASAN: null-ptr-deref in range [0x0000000000000008-0x000000000000000f]

I _think_ what's happened here is that __bio_release_pages() was called
with a zero-length bio.

> CPU: 0 PID: 5059 Comm: syz-executor696 Not tainted 6.7.0-rc5-next-20231212-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/10/2023
> RIP: 0010:_compound_head include/linux/page-flags.h:247 [inline]
> RIP: 0010:bio_first_folio+0xcb/0x5c0 include/linux/bio.h:289

... bio_first_folio() doesn't handle it well, whereas
bio_for_each_segment_all() did.

> 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.

#syz test git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next abb240f7a2bd

diff --git a/include/linux/bio.h b/include/linux/bio.h
index ec4db73e5f4e..1518f1201ddd 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -286,6 +286,11 @@ static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio,
{
struct bio_vec *bvec = bio_first_bvec_all(bio) + i;

+ if (i >= bio->bi_vcnt) {
+ fi->folio = NULL;
+ return;
+ }
+
fi->folio = page_folio(bvec->bv_page);
fi->offset = bvec->bv_offset +
PAGE_SIZE * (bvec->bv_page - &fi->folio->page);
@@ -303,10 +308,8 @@ static inline void bio_next_folio(struct folio_iter *fi, struct bio *bio)
fi->offset = 0;
fi->length = min(folio_size(fi->folio), fi->_seg_count);
fi->_next = folio_next(fi->folio);
- } else if (fi->_i + 1 < bio->bi_vcnt) {
- bio_first_folio(fi, bio, fi->_i + 1);
} else {
- fi->folio = NULL;
+ bio_first_folio(fi, bio, fi->_i + 1);
}
}

Edward Adam Davis

unread,
Dec 16, 2023, 1:22:09 AM12/16/23
to syzbot+8b2330...@syzkaller.appspotmail.com, syzkall...@googlegroups.com
please test general protection fault in bio_first_folio

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git abb240f7a2bd

diff --git a/include/linux/bio.h b/include/linux/bio.h
index ec4db73e5f4e..20ccf5796ea0 100644
--- a/include/linux/bio.h
+++ b/include/linux/bio.h
@@ -286,6 +286,7 @@ static inline void bio_first_folio(struct folio_iter *fi, struct bio *bio,
{
struct bio_vec *bvec = bio_first_bvec_all(bio) + i;

+ WARN_ON_ONCE(!bio->bi_vcnt);
fi->folio = page_folio(bvec->bv_page);
fi->offset = bvec->bv_offset +
PAGE_SIZE * (bvec->bv_page - &fi->folio->page);
diff --git a/block/blk-map.c b/block/blk-map.c
index 8584babf3ea0..e2169d67be4b 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -275,6 +275,7 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
if (!iov_iter_count(iter))
return -EINVAL;

+ printk("i: %p, nr: %d, cn: %lld, %s\n", iter, nr_vecs, iov_iter_count(iter), __func__);
bio = blk_rq_map_bio_alloc(rq, nr_vecs, gfp_mask);
if (bio == NULL)
return -ENOMEM;
@@ -298,6 +299,7 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
nr_vecs, extraction_flags, &offs);
if (unlikely(bytes <= 0)) {
ret = bytes ? bytes : -EFAULT;
+ printk("r: %d, b: %lld, icn: %d, %s\n", ret, bytes, iov_iter_count(iter), __func__);
goto out_unmap;
}

@@ -339,6 +341,7 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
}

ret = blk_rq_append_bio(rq, bio);
+ printk("b: %p, r: %d, %s\n", bio, ret, __func__);
if (ret)
goto out_unmap;
return 0;

Hillf Danton

unread,
Dec 16, 2023, 2:00:27 AM12/16/23
to syzbot, linux-...@vger.kernel.org, syzkall...@googlegroups.com
On Fri, 15 Dec 2023 21:20:22 -0800
> HEAD commit: abb240f7a2bd Add linux-next specific files for 20231212
> git tree: linux-next
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13274512e80000

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git abb240f7a2bd

--- x/block/blk-map.c
+++ y/block/blk-map.c
@@ -269,6 +269,7 @@ static int bio_map_user_iov(struct reque
unsigned int max_sectors = queue_max_hw_sectors(rq->q);
unsigned int nr_vecs = iov_iter_npages(iter, BIO_MAX_VECS);
struct bio *bio;
+ int add_pg = 0;
int ret;
int j;

@@ -322,6 +323,7 @@ static int bio_map_user_iov(struct reque
bio_release_page(bio, page);
bytes -= n;
offs = 0;
+ add_pg = 1;
}
}
/*
@@ -344,7 +346,8 @@ static int bio_map_user_iov(struct reque
return 0;

out_unmap:
- bio_release_pages(bio, false);
+ if (add_pg)
+ bio_release_pages(bio, false);
blk_mq_map_bio_put(bio);
return ret;
}
--

syzbot

unread,
Dec 16, 2023, 2:01:08 AM12/16/23
to ax...@kernel.dk, linux...@vger.kernel.org, linux-...@vger.kernel.org, syzkall...@googlegroups.com, wi...@infradead.org
Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+8b2330...@syzkaller.appspotmail.com

Tested on:

commit: abb240f7 Add linux-next specific files for 20231212
git tree: git://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=13d005c6e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=cc2485c21b49ddc4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b23309d5788a79d3eea
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=12d24771e80000

Note: testing is done by a robot and is best-effort only.

syzbot

unread,
Dec 16, 2023, 2:29:06 AM12/16/23
to ead...@qq.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot has tested the proposed patch but the reproducer is still triggering an issue:
WARNING in bio_first_folio

i: ffffc9000548f810, nr: 8, cn: 32764, bio_map_user_iov
r: -14, b: -14, icn: 32764, bio_map_user_iov
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5485 at include/linux/bio.h:289 bio_first_folio+0x509/0x620 include/linux/bio.h:289
Modules linked in:
CPU: 0 PID: 5485 Comm: syz-executor.0 Not tainted 6.7.0-rc5-next-20231212-syzkaller-dirty #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:bio_first_folio+0x509/0x620 include/linux/bio.h:289
Code: fc 41 83 e4 01 4c 89 e6 e8 a4 37 43 fd 4d 85 e4 0f 84 52 fc ff ff e8 06 3c 43 fd 4d 8d 6f ff e9 44 fc ff ff e8 f8 3b 43 fd 90 <0f> 0b 90 e9 c6 fb ff ff e8 ea 3b 43 fd 90 0f 0b 90 e9 47 fb ff ff
RSP: 0018:ffffc9000548f448 EFLAGS: 00010293
RAX: 0000000000000000 RBX: ffffc9000548f4e8 RCX: ffffffff8444e18d
RDX: ffff88802b971dc0 RSI: ffffffff8444e5c8 RDI: 0000000000000003
RBP: ffff8880216b3088 R08: 0000000000000003 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000
R13: ffff8880216b3000 R14: 0000000000000000 R15: ffff8880216b3000
FS: 00007f2666f3e6c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f2666f3dc98 CR3: 000000007b2e4000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
__bio_release_pages+0x9d/0x4b0 block/bio.c:1150
bio_release_pages include/linux/bio.h:509 [inline]
bio_map_user_iov+0x969/0xaf0 block/blk-map.c:350
blk_rq_map_user_iov+0x6a5/0x1840 block/blk-map.c:666
blk_rq_map_user block/blk-map.c:693 [inline]
blk_rq_map_user_io+0x202/0x230 block/blk-map.c:726
sg_io+0x537/0xd70 drivers/scsi/scsi_ioctl.c:456
scsi_cdrom_send_packet+0x276/0x640 drivers/scsi/scsi_ioctl.c:820
scsi_ioctl+0x146/0x1840 drivers/scsi/scsi_ioctl.c:903
sg_ioctl+0xb7b/0x2760 drivers/scsi/sg.c:1163
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:871 [inline]
__se_sys_ioctl fs/ioctl.c:857 [inline]
__x64_sys_ioctl+0x18f/0x210 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0x40/0x110 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x62/0x6a
RIP: 0033:0x7f266627cba9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 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 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f2666f3e0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f266639bf80 RCX: 00007f266627cba9
RDX: 0000000020000000 RSI: 0000000000005393 RDI: 0000000000000004
RBP: 00007f26662c847a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f266639bf80 R15: 00007fff081ca458
</TASK>


Tested on:

commit: abb240f7 Add linux-next specific files for 20231212
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=152a8d1ce80000
kernel config: https://syzkaller.appspot.com/x/.config?x=cc2485c21b49ddc4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b23309d5788a79d3eea
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=1175872ae80000

Edward Adam Davis

unread,
Dec 16, 2023, 2:29:59 AM12/16/23
to syzbot+8b2330...@syzkaller.appspotmail.com, syzkall...@googlegroups.com
please test general protection fault in bio_first_folio

#syz test https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git abb240f7a2bd

diff --git a/block/blk-map.c b/block/blk-map.c
index 8584babf3ea0..6c6f0ef1407b 100644
--- a/block/blk-map.c
+++ b/block/blk-map.c
@@ -344,7 +344,8 @@ static int bio_map_user_iov(struct request *rq, struct iov_iter *iter,
return 0;

out_unmap:
- bio_release_pages(bio, false);
+ if (bio->bi_vcnt)

syzbot

unread,
Dec 16, 2023, 3:11:07 AM12/16/23
to hda...@sina.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+8b2330...@syzkaller.appspotmail.com

Tested on:

commit: abb240f7 Add linux-next specific files for 20231212
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=126c1aaee80000
kernel config: https://syzkaller.appspot.com/x/.config?x=cc2485c21b49ddc4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b23309d5788a79d3eea
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=1644417ce80000

syzbot

unread,
Dec 16, 2023, 4:19:05 AM12/16/23
to ead...@qq.com, linux-...@vger.kernel.org, syzkall...@googlegroups.com
Hello,

syzbot has tested the proposed patch and the reproducer did not trigger any issue:

Reported-and-tested-by: syzbot+8b2330...@syzkaller.appspotmail.com

Tested on:

commit: abb240f7 Add linux-next specific files for 20231212
git tree: https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git
console output: https://syzkaller.appspot.com/x/log.txt?x=14b24771e80000
kernel config: https://syzkaller.appspot.com/x/.config?x=cc2485c21b49ddc4
dashboard link: https://syzkaller.appspot.com/bug?extid=8b23309d5788a79d3eea
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
patch: https://syzkaller.appspot.com/x/patch.diff?x=14840371e80000
Reply all
Reply to author
Forward
0 new messages