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X-Gm-Message-State: AOJu0YzYeQRbqI9UI8irY9icV8yGZkO5+1vki7Cg5GeI1xOVS1oA68IV OVE565shJQpANQSYrdMX+se2qa6EXCxpP5CkbJKdkCkv8yPjzTt4ZoIT0ewk+xIpGhPPNU8mQ7h kkf/qHZqrO0kyQaDjlA7kJq/ToEr9t9V/Ok8SLOqexypYKagNl8Q1JYJDfeo= X-Google-Smtp-Source: AGHT+IGXGbV+tKbHXfAk9NQ4CZ9jPqMUgDVrsFfSHpSN5QMsDRnOHS375bSle+lbQ1fYQ5J69vMvdF6Tyk013J2dWzShKKSACMlI MIME-Version: 1.0 X-Received: by 2002:a92:cd84:0:b0:3dc:8a5f:7cd1 with SMTP id e9e14a558f8ab-3ddce407fd6mr34713295ab.3.1749208167899; Fri, 06 Jun 2025 04:09:27 -0700 (PDT) Date: Fri, 06 Jun 2025 04:09:27 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <6842cc67.a00a0220.29ac89.003b.GAE@google.com> Subject: [syzbot] [mm?] WARNING in vma_modify From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, brad.spengler@opensrcsec.com, jannh@google.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, pfalcato@suse.de, syzkaller-bugs@googlegroups.com, vbabka@suse.cz 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https://syzkaller.appspot.com/x/.config?x=6acfdd5e5c8ef3d0 dashboard link: https://syzkaller.appspot.com/bug?extid=d16409ea9ecc16ed261a compiler: Debian clang version 20.1.6 (++20250514063057+1e4d39e07757-1~exp1~20250514183223.118), Debian LLD 20.1.6 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10d3f00c580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=13c781d4580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/4f3c020d1cfe/disk-cd2e103d.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f67c698d4603/vmlinux-cd2e103d.xz kernel image: https://storage.googleapis.com/syzbot-assets/4a3974b951f8/bzImage-cd2e103d.xz The issue was bisected to: commit 47b16d0462a460000b8f05dfb1292377ac48f3ca Author: Lorenzo Stoakes Date: Sat Feb 22 16:19:52 2025 +0000 mm: abort vma_modify() on merge out of memory failure bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=15b5580c580000 final oops: https://syzkaller.appspot.com/x/report.txt?x=17b5580c580000 console output: https://syzkaller.appspot.com/x/log.txt?x=13b5580c580000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d16409ea9ecc16ed261a@syzkaller.appspotmail.com Fixes: 47b16d0462a4 ("mm: abort vma_modify() on merge out of memory failure") 7f83ee71a000-7f83ee71ffff: ffff8880117713c0 7f83ee720000-7fff07f51fff: 0000000000000000 7fff07f52000-7fff07f72fff: ffff88801182e500 7fff07f73000-ffffffffffffffff: 0000000000000000 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5825 at mm/vma.c:808 vma_merge_existing_range mm/vma.c:808 [inline] WARNING: CPU: 1 PID: 5825 at mm/vma.c:808 vma_modify+0x1540/0x1970 mm/vma.c:1604 Modules linked in: CPU: 1 UID: 0 PID: 5825 Comm: syz-executor396 Not tainted 6.15.0-syzkaller-10820-gcd2e103d57e5 #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:vma_merge_existing_range mm/vma.c:808 [inline] RIP: 0010:vma_modify+0x1540/0x1970 mm/vma.c:1604 Code: 0b 90 e9 9a ed ff ff e8 4e 56 ab ff 90 0f 0b 90 e9 a3 ec ff ff e8 40 56 ab ff 4c 89 f7 48 c7 c6 20 8c 96 8b e8 f1 05 f3 ff 90 <0f> 0b 90 e9 4c ed ff ff e8 23 56 ab ff e9 4f ee ff ff e8 19 56 ab RSP: 0018:ffffc90003797b38 EFLAGS: 00010286 RAX: ffffffff8b5d28cd RBX: ffff8880246ea780 RCX: ffff88802c93bc00 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: ffffffffffffffff RBP: 0000200000000000 R08: ffffc900037976a7 R09: 1ffff920006f2ed4 R10: dffffc0000000000 R11: fffff520006f2ed5 R12: 0000200000000000 R13: ffffc90003797c60 R14: ffffc90003797c40 R15: 1ffff920006f2f8c FS: 0000555582b74380(0000) GS:ffff888125d5f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055c124e6b168 CR3: 000000007547b000 CR4: 0000000000350ef0 Call Trace: vma_modify_flags+0x1e8/0x230 mm/vma.c:1645 mlock_fixup+0x22a/0x360 mm/mlock.c:483 apply_mlockall_flags+0x2f0/0x3c0 mm/mlock.c:736 __ia32_sys_munlockall+0x10a/0x220 mm/mlock.c:782 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f83ee6a76a9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 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:00007fff07f72138 EFLAGS: 00000246 ORIG_RAX: 0000000000000098 RAX: ffffffffffffffda RBX: 00007fff07f72150 RCX: 00007f83ee6a76a9 RDX: 00007f83ee6a68e0 RSI: 00007fff07f72150 RDI: 00007fff07f72150 RBP: 0000000000000001 R08: 00007fff07f71ed7 R09: 00000000000000a0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 --- 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 syzkaller@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