Hello,
syzbot found the following issue on:
HEAD commit: df964ce9ef9f Add linux-next specific files for 20230929
git tree: linux-next
console output: https://syzkaller.appspot.com/x/log.txt?x=12d60d01680000
kernel config: https://syzkaller.appspot.com/x/.config?x=880c828d75e38e1b
dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40
Unfortunately, I don't have any reproducer for this issue yet.
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/fe7244c6057d/disk-df964ce9.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/48cdc7f3b2c0/vmlinux-df964ce9.xz
kernel image: https://storage.googleapis.com/syzbot-assets/ce7c93a66da9/bzImage-df964ce9.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6510 at include/linux/hugetlb.h:1289 hugetlb_walk include/linux/hugetlb.h:1289 [inline]
WARNING: CPU: 0 PID: 6510 at include/linux/hugetlb.h:1289 copy_hugetlb_page_range+0x675/0x3520 mm/hugetlb.c:4940
Modules linked in:
CPU: 0 PID: 6510 Comm: syz-executor.5 Not tainted 6.6.0-rc3-next-20230929-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:hugetlb_walk include/linux/hugetlb.h:1289 [inline]
RIP: 0010:copy_hugetlb_page_range+0x675/0x3520 mm/hugetlb.c:4940
Code: 00 be ff ff ff ff 48 81 c7 a0 01 00 00 e8 63 46 6c 08 31 ff 89 c5 89 c6 e8 a8 8a ae ff 85 ed 0f 85 dd fd ff ff e8 2b 8f ae ff <0f> 0b e9 d1 fd ff ff e8 1f 8f ae ff 49 89 ec 31 ff 41 81 e4 ff 0f
RSP: 0000:ffffc900059574a0 EFLAGS: 00010287
RAX: 000000000000c9e1 RBX: 0000000020000000 RCX: ffffc9000bdec000
RDX: 0000000000040000 RSI: ffffffff81d9c695 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff910db240 R12: ffff888027212f80
R13: ffff8880177d0e00 R14: 0000000020000000 R15: dffffc0000000000
FS: 00007f2f1edb46c0(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b3152b000 CR3: 000000001d027000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
copy_page_range+0x1dc2/0x3c40 mm/memory.c:1293
dup_mmap+0x13f3/0x1d80 kernel/fork.c:758
dup_mm kernel/fork.c:1686 [inline]
copy_mm kernel/fork.c:1735 [inline]
copy_process+0x6cc9/0x74b0 kernel/fork.c:2497
kernel_clone+0xfd/0x920 kernel/fork.c:2902
__do_sys_clone3+0x1f1/0x260 kernel/fork.c:3203
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f2f1e07cae9
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:00007f2f1edb3f98 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 0000000000000058 RCX: 00007f2f1e07cae9
RDX: 00007f2f1edb3fb0 RSI: 0000000000000058 RDI: 00007f2f1edb3fb0
RBP: 00007f2f1e0c847a R08: 0000000000000000 R09: 0000000000000058
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f2f1e19c050 R15: 00007ffe03b1a6e8
</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 [email protected].
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https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
If the bug is already fixed, let syzbot know by replying with:
#syz fix: exact-commit-title
If you want to overwrite bug's subsystems, reply with:
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(See the list of subsystem names on the web dashboard)
If the bug is a duplicate of another bug, reply with:
#syz dup: exact-subject-of-another-report
If you want to undo deduplication, reply with:
#syz undup
syzbot has found a reproducer for the following issue on:
HEAD commit: c9f2baaa18b5 Add linux-next specific files for 20231003
git tree: linux-next
console+strace: https://syzkaller.appspot.com/x/log.txt?x=154df992680000
kernel config: https://syzkaller.appspot.com/x/.config?x=3fe9c462fee1649f
dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
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=11e4b011680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11772062680000
Downloadable assets:
disk image: https://storage.googleapis.com/syzbot-assets/5361e41384fe/disk-c9f2baaa.raw.xz
vmlinux: https://storage.googleapis.com/syzbot-assets/7028b209124d/vmlinux-c9f2baaa.xz
kernel image: https://storage.googleapis.com/syzbot-assets/a167dc667ee5/bzImage-c9f2baaa.xz
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: [email protected]
------------[ cut here ]------------
WARNING: CPU: 0 PID: 5054 at include/linux/hugetlb.h:1289 hugetlb_walk include/linux/hugetlb.h:1289 [inline]
WARNING: CPU: 0 PID: 5054 at include/linux/hugetlb.h:1289 copy_hugetlb_page_range+0x675/0x3520 mm/hugetlb.c:4940
Modules linked in:
CPU: 0 PID: 5054 Comm: syz-executor329 Not tainted 6.6.0-rc4-next-20231003-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:hugetlb_walk include/linux/hugetlb.h:1289 [inline]
RIP: 0010:copy_hugetlb_page_range+0x675/0x3520 mm/hugetlb.c:4940
Code: 00 be ff ff ff ff 48 81 c7 a0 01 00 00 e8 b3 2f 6c 08 31 ff 89 c5 89 c6 e8 68 77 ae ff 85 ed 0f 85 dd fd ff ff e8 eb 7b ae ff <0f> 0b e9 d1 fd ff ff e8 df 7b ae ff 49 89 ec 31 ff 41 81 e4 ff 0f
RSP: 0018:ffffc90003a2f4a0 EFLAGS: 00010293
RAX: 0000000000000000 RBX: 0000000020000000 RCX: ffffffff81d9dcf8
RDX: ffff8880675d0000 RSI: ffffffff81d9dd05 RDI: 0000000000000005
RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff910df9a8 R12: ffff88807905b900
R13: ffff88801efab500 R14: 0000000020000000 R15: dffffc0000000000
FS: 0000555557543380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fcd71918140 CR3: 000000007b828000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
<TASK>
copy_page_range+0x1dc2/0x3c70 mm/memory.c:1293
dup_mmap+0x13f3/0x1d80 kernel/fork.c:758
dup_mm kernel/fork.c:1684 [inline]
copy_mm kernel/fork.c:1733 [inline]
copy_process+0x6cc9/0x74b0 kernel/fork.c:2495
kernel_clone+0xfd/0x920 kernel/fork.c:2900
__do_sys_clone3+0x1f1/0x260 kernel/fork.c:3201
do_syscall_x64 arch/x86/entry/common.c:51 [inline]
do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fcd71930ab9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007ffc79f4f9b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcd71930ab9
RDX: 00007ffc79f4f9c0 RSI: 0000000000000058 RDI: 00007ffc79f4f9c0
RBP: 00007fcd719a35f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
</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.
Adding Rik as this was a result of the conversion to invalidate_lock patch.
--
Mike Kravetz
On 10/03/23 10:23, syzbot wrote:
> syzbot has found a reproducer for the following issue on:
>
> HEAD commit: c9f2baaa18b5 Add linux-next specific files for 20231003
> git tree: linux-next
> console+strace: https://syzkaller.appspot.com/x/log.txt?x=154df992680000
> kernel config: https://syzkaller.appspot.com/x/.config?x=3fe9c462fee1649f
> dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
> 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=11e4b011680000
> C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11772062680000
>
> Downloadable assets:
> disk image: https://storage.googleapis.com/syzbot-assets/5361e41384fe/disk-c9f2baaa.raw.xz
> vmlinux: https://storage.googleapis.com/syzbot-assets/7028b209124d/vmlinux-c9f2baaa.xz
> kernel image: https://storage.googleapis.com/syzbot-assets/a167dc667ee5/bzImage-c9f2baaa.xz
>
> IMPORTANT: if you fix the issue, please add the following tag to the commit:
> Reported-by: [email protected]
>
> ------------[ cut here ]------------
> WARNING: CPU: 0 PID: 5054 at include/linux/hugetlb.h:1289 hugetlb_walk include/linux/hugetlb.h:1289 [inline]
> WARNING: CPU: 0 PID: 5054 at include/linux/hugetlb.h:1289 copy_hugetlb_page_range+0x675/0x3520 mm/hugetlb.c:4940
> Modules linked in:
> CPU: 0 PID: 5054 Comm: syz-executor329 Not tainted 6.6.0-rc4-next-20231003-syzkaller #0
> Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
> RIP: 0010:hugetlb_walk include/linux/hugetlb.h:1289 [inline]
> RIP: 0010:copy_hugetlb_page_range+0x675/0x3520 mm/hugetlb.c:4940
> Code: 00 be ff ff ff ff 48 81 c7 a0 01 00 00 e8 b3 2f 6c 08 31 ff 89 c5 89 c6 e8 68 77 ae ff 85 ed 0f 85 dd fd ff ff e8 eb 7b ae ff <0f> 0b e9 d1 fd ff ff e8 df 7b ae ff 49 89 ec 31 ff 41 81 e4 ff 0f
> RSP: 0018:ffffc90003a2f4a0 EFLAGS: 00010293
> RAX: 0000000000000000 RBX: 0000000020000000 RCX: ffffffff81d9dcf8
> RDX: ffff8880675d0000 RSI: ffffffff81d9dd05 RDI: 0000000000000005
> RBP: 0000000000000000 R08: 0000000000000005 R09: 0000000000000000
> R10: 0000000000000000 R11: ffffffff910df9a8 R12: ffff88807905b900
> R13: ffff88801efab500 R14: 0000000020000000 R15: dffffc0000000000
> FS: 0000555557543380(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
> CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
> CR2: 00007fcd71918140 CR3: 000000007b828000 CR4: 00000000003506f0
> DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
> DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
> Call Trace:
> <TASK>
> copy_page_range+0x1dc2/0x3c70 mm/memory.c:1293
> dup_mmap+0x13f3/0x1d80 kernel/fork.c:758
> dup_mm kernel/fork.c:1684 [inline]
> copy_mm kernel/fork.c:1733 [inline]
> copy_process+0x6cc9/0x74b0 kernel/fork.c:2495
> kernel_clone+0xfd/0x920 kernel/fork.c:2900
> __do_sys_clone3+0x1f1/0x260 kernel/fork.c:3201
> do_syscall_x64 arch/x86/entry/common.c:51 [inline]
> do_syscall_64+0x38/0xb0 arch/x86/entry/common.c:81
> entry_SYSCALL_64_after_hwframe+0x63/0xcd
> RIP: 0033:0x7fcd71930ab9
> Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 c1 17 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:00007ffc79f4f9b8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b3
> RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcd71930ab9
> RDX: 00007ffc79f4f9c0 RSI: 0000000000000058 RDI: 00007ffc79f4f9c0
> RBP: 00007fcd719a35f0 R08: 0000000000000000 R09: 0000000000000000
> R10: 00000000ffffffff R11: 0000000000000246 R12: 0000000000000001
> R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
> </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.
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-and-tested-by: [email protected]
Tested on:
commit: c9f2baaa Add linux-next specific files for 20231003
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=17bf33b2680000
kernel config: https://syzkaller.appspot.com/x/.config?x=3fe9c462fee1649f
dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
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=1624aeb2680000
Note: testing is done by a robot and is best-effort only.
On Tue, 2023-10-03 at 10:29 -0700, Mike Kravetz wrote:
> Adding Rik as this was a result of the conversion to invalidate_lock
> patch.
I fixed this one in the version I'm about to send out.
--
All Rights Reversed.
syzbot has bisected this issue to:
commit 446503572dc452fc544d6898113feb0f3801477b
Author: Rik van Riel <[email protected]>
Date: Sun Oct 1 00:55:50 2023 +0000
hugetlbfs: replace hugetlb_vma_lock with invalidate_lock
bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=146c879e680000
start commit: c9f2baaa18b5 Add linux-next specific files for 20231003
git tree: linux-next
final oops: https://syzkaller.appspot.com/x/report.txt?x=166c879e680000
console output: https://syzkaller.appspot.com/x/log.txt?x=126c879e680000
kernel config: https://syzkaller.appspot.com/x/.config?x=3fe9c462fee1649f
dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=11e4b011680000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=11772062680000
Reported-by: [email protected]
Fixes: 446503572dc4 ("hugetlbfs: replace hugetlb_vma_lock with invalidate_lock")
For information about bisection process see: https://goo.gl/tpsmEJ#bisection
Hello,
syzbot has tested the proposed patch and the reproducer did not trigger any issue:
Reported-and-tested-by: [email protected]
Tested on:
commit: c9f2baaa Add linux-next specific files for 20231003
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=15545321680000
kernel config: https://syzkaller.appspot.com/x/.config?x=3fe9c462fee1649f
dashboard link: https://syzkaller.appspot.com/bug?extid=ec78016e3d67860eec28
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=152b55b2680000
Note: testing is done by a robot and is best-effort only.