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: syzbot+ec78016e3d67860eec28@xxxxxxxxxxxxxxxxxxxxxxxxx > > ------------[ 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.
