From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 0832BC71136 for ; Tue, 17 Jun 2025 08:11:34 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 74B4F6B007B; Tue, 17 Jun 2025 04:11:34 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 6FC456B0088; Tue, 17 Jun 2025 04:11:34 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 611B16B0089; Tue, 17 Jun 2025 04:11:34 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0016.hostedemail.com [216.40.44.16]) by kanga.kvack.org (Postfix) with ESMTP id 52DF66B007B for ; Tue, 17 Jun 2025 04:11:34 -0400 (EDT) Received: from smtpin01.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id DC94A1D7B84 for ; Tue, 17 Jun 2025 08:11:33 +0000 (UTC) X-FDA: 83564173266.01.5DBBF95 Received: from mail-io1-f79.google.com (mail-io1-f79.google.com [209.85.166.79]) by imf14.hostedemail.com (Postfix) with ESMTP id 340DC100004 for ; Tue, 17 Jun 2025 08:11:32 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=none; spf=pass (imf14.hostedemail.com: domain of 3MyNRaAkbAAg067sittmzixxql.owwotm20mzkwv1mv1.kwu@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.79 as permitted sender) smtp.mailfrom=3MyNRaAkbAAg067sittmzixxql.owwotm20mzkwv1mv1.kwu@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1750147892; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding:in-reply-to: references; bh=QPi7Ekv5g3ZL6/X6dunEU4RdGlyN0m7FkX1Pfyz6sh0=; b=b+0Oxox7AbLzRkKnkMclkxnTnlY2qxtbenVT2+x6JrEQnyq6jJAKBLx9NS2oHwl4goYF8N rrSc5WKU838/JPhfQJPIUMn3aBt2xHIWdPR/gYaoxl1BIfSQnRcFL0Qczz3xErzg7l2aBI VZpGQ7djDI0juAxFjBeUPAFSZ4CBndU= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=none; spf=pass (imf14.hostedemail.com: domain of 3MyNRaAkbAAg067sittmzixxql.owwotm20mzkwv1mv1.kwu@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.79 as permitted sender) smtp.mailfrom=3MyNRaAkbAAg067sittmzixxql.owwotm20mzkwv1mv1.kwu@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1750147892; a=rsa-sha256; cv=none; b=212sKDTtCBPkqJHjSEMW/bH6GKAzZPzzLrXq7N3KiZzPSMneF01SQLTDbWcZtIuDY/bXUC 1tLIEyrI8+Gj/26HvmGQGMQhqW1Z/leXIBj3AuFH7u1T2LYlN72ro3l55woC+5Vhtrs4dH GHXM6LK6be97vhi0ml2F5vVnyeyvKS0= Received: by mail-io1-f79.google.com with SMTP id ca18e2360f4ac-8760733a107so12570339f.3 for ; Tue, 17 Jun 2025 01:11:31 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20230601; t=1750147891; x=1750752691; h=to:from:subject:message-id:date:mime-version:x-gm-message-state :from:to:cc:subject:date:message-id:reply-to; bh=QPi7Ekv5g3ZL6/X6dunEU4RdGlyN0m7FkX1Pfyz6sh0=; b=ag9sloPP5Ipdm5JNjr0TRijfFQHcgnKgZCz5JXvgnIEsEjKry2HoW5loeDBNi8pnsN QuVPdogZU83uBtTiXY1DhtJZEjrgTobs/edOXrYh/15nz0fxp7X15rMpY0mbXjXgi7pb c758M0QQF4P/2irtfP2sCxkR+Rcuzj7xhkER1S1zvuDdS76fznI/hEQBNsOaiIh8gnui me2QHKAsvMONY6vs/YBsZPgzoWKsmIRiNKyj/eqJ/hTOzCb+3DcNKunCZiZF1dwTwb5A cYz8So03KtX3pkAgLJc+grMmoFlAx+3DKwvdZUbcpLxKb2nawrtrDg9dFwo1UQ6GVf0j c0Aw== X-Forwarded-Encrypted: i=1; AJvYcCV8c2ciCzDkFeNeuWFzbjC+gRqDn/Mh9jus6fHUZHpaaYPUeKX+vkfchVZ7wcXxO+X27uDfAAcMdQ==@kvack.org X-Gm-Message-State: AOJu0YyqcRTHvk+zuQygFA47PRRdwbTp0A9xMrkWHnk6Uj8pkCZrTx27 Rj6Ps3MaiR1JlIP14OOfRBA6y0SEnl1Py2xHLfOyGZWE5gcWE3VYAff7uvdJhNsdtZOrIsHkdSG PMCkgboQAuVfhaYKGVRv3h83O7vTx2yJ1dE+TCbRHzGws5E4JtxLlYA1Uf5Y= X-Google-Smtp-Source: AGHT+IH/J7Wpt4NFbRv9BtURosJVddO1HK+FYtLEPiQsoCWa/FprlUSFtXDb3q/U3AcZivmNe1ep5qKlh8mgPPJMm/4JnoKWmUq0 MIME-Version: 1.0 X-Received: by 2002:a05:6e02:260e:b0:3dd:d18a:2d71 with SMTP id e9e14a558f8ab-3de07c4c33cmr154018645ab.2.1750147891201; Tue, 17 Jun 2025 01:11:31 -0700 (PDT) Date: Tue, 17 Jun 2025 01:11:31 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68512333.a70a0220.395abc.0205.GAE@google.com> Subject: [syzbot] [mm?] WARNING: bad unlock balance in move_pgt_entry From: syzbot To: Liam.Howlett@oracle.com, akpm@linux-foundation.org, 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 Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam05 X-Rspamd-Queue-Id: 340DC100004 X-Stat-Signature: 7ytfz7ic13ay69s4pr3ufcrrzw7b1mqa X-Rspam-User: X-HE-Tag: 1750147892-708891 X-HE-Meta: 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 B1XsDWr2 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 B/LDeJOw jZF6L+RvDkof1PYIiEiKDUCIgi1dCQq64P+MvP+NBOzaV5RQEes+vEcOoM5Ctp9Gv4QXEef/LmpYERmHPuzR1QRkw3bdeWcaPbW5OzEu3fVxJQ0fkT1aunylV5JTXvN2PM8EuXbnIpM1ZVYf1RGEj+D7yUocEpgWbcW/6QWUBtp860vP/JguA+aFPGlowPNkh51IAJVXV5YCcHDW68xqbleIf6olZZnXwm9vdl8ujuv5GWXQMSZSMZc9tsKYXA/8R64NrjS8DyxjdpoUusG9dp26fyinZnze5tz5r65Kc+07IhEh7dNUQZuVB9DIqYKzN2oxIKKWyibvSC+P70/wp2axgb08gj9bA7Y8TRrIFhlnO5ANdsNFL98pbKzHOemDjqNUIkVWHbG7KlLBAaBDejsgfVJkBiNsZt7Zdq9qkF6Q8mxkxyLas4vdadGvzY2i X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: Hello, syzbot found the following issue on: HEAD commit: 050f8ad7b58d Add linux-next specific files for 20250616 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=16389e82580000 kernel config: https://syzkaller.appspot.com/x/.config?x=d2efc7740224b93a dashboard link: https://syzkaller.appspot.com/bug?extid=52343d77314d6c0447fe 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=11389e82580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=16824370580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/49faa18d2f53/disk-050f8ad7.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/7c6f9cd7fe5d/vmlinux-050f8ad7.xz kernel image: https://storage.googleapis.com/syzbot-assets/84a08d6403ee/bzImage-050f8ad7.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+52343d77314d6c0447fe@syzkaller.appspotmail.com ===================================== WARNING: bad unlock balance detected! 6.16.0-rc2-next-20250616-syzkaller #0 Not tainted ------------------------------------- syz-executor359/6969 is trying to release lock (&mapping->i_mmap_rwsem) at: [] i_mmap_unlock_write include/linux/fs.h:557 [inline] [] maybe_drop_rmap_locks mm/mremap.c:197 [inline] [] move_pgt_entry+0xfa7/0x1170 mm/mremap.c:686 but there are no more locks to release! other info that might help us debug this: 1 lock held by syz-executor359/6969: #0: ffff88802f641760 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:374 [inline] #0: ffff88802f641760 (&mm->mmap_lock){++++}-{4:4}, at: do_mremap mm/mremap.c:2371 [inline] #0: ffff88802f641760 (&mm->mmap_lock){++++}-{4:4}, at: __do_sys_mremap mm/mremap.c:2453 [inline] #0: ffff88802f641760 (&mm->mmap_lock){++++}-{4:4}, at: __se_sys_mremap+0x3c0/0xc60 mm/mremap.c:2421 stack backtrace: CPU: 1 UID: 0 PID: 6969 Comm: syz-executor359 Not tainted 6.16.0-rc2-next-20250616-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120 print_unlock_imbalance_bug+0xdc/0xf0 kernel/locking/lockdep.c:5301 __lock_release kernel/locking/lockdep.c:5540 [inline] lock_release+0x269/0x3e0 kernel/locking/lockdep.c:5892 up_write+0x2d/0x420 kernel/locking/rwsem.c:1629 i_mmap_unlock_write include/linux/fs.h:557 [inline] maybe_drop_rmap_locks mm/mremap.c:197 [inline] move_pgt_entry+0xfa7/0x1170 mm/mremap.c:686 move_page_tables+0xcde/0x2940 mm/mremap.c:1367 copy_vma_and_data mm/mremap.c:1807 [inline] move_vma+0xd5e/0x2010 mm/mremap.c:1913 mremap_to+0x7e7/0x8b0 mm/mremap.c:2106 do_mremap mm/mremap.c:2396 [inline] __do_sys_mremap mm/mremap.c:2453 [inline] __se_sys_mremap+0x8f5/0xc60 mm/mremap.c:2421 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: 0033:0x7f33da2e43b9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 1d 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:00007f33da273168 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 RAX: ffffffffffffffda RBX: 00007f33da3673f8 RCX: 00007f33da2e43b9 RDX: 0000000000200000 RSI: 0000000000600600 RDI: 0000200000000000 RBP: 00007f33da3673f0 R08: 0000200000a00000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007f33da3673fc R13: 000000000000006e R14: 00007ffccf0ef660 R15: 00007ffccf0ef748 ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888033554d00, owner = 0x0, curr 0xffff888033b15a00, list empty WARNING: kernel/locking/rwsem.c:1368 at __up_write kernel/locking/rwsem.c:1367 [inline], CPU#1: syz-executor359/6969 WARNING: kernel/locking/rwsem.c:1368 at up_write+0x3a2/0x420 kernel/locking/rwsem.c:1630, CPU#1: syz-executor359/6969 Modules linked in: CPU: 1 UID: 0 PID: 6969 Comm: syz-executor359 Not tainted 6.16.0-rc2-next-20250616-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:__up_write kernel/locking/rwsem.c:1367 [inline] RIP: 0010:up_write+0x3a2/0x420 kernel/locking/rwsem.c:1630 Code: d0 48 c7 c7 60 ee 8a 8b 48 c7 c6 80 f0 8a 8b 48 8b 14 24 4c 89 f1 4d 89 e0 4c 8b 4c 24 08 41 52 e8 23 3b e6 ff 48 83 c4 08 90 <0f> 0b 90 90 e9 6d fd ff ff 48 c7 c1 34 81 a1 8f 80 e1 07 80 c1 03 RSP: 0018:ffffc9000b2ff498 EFLAGS: 00010282 RAX: 636aee1c3dfaec00 RBX: ffff888033554d00 RCX: ffff888033b15a00 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000002 RBP: dffffc0000000000 R08: 0000000000000003 R09: 0000000000000004 R10: dffffc0000000000 R11: fffffbfff1bfaa14 R12: 0000000000000000 R13: ffff888033554d58 R14: ffff888033554d00 R15: 1ffff110066aa9a1 FS: 00007f33da2736c0(0000) GS:ffff888125d40000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f33da29ba90 CR3: 000000002c068000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: i_mmap_unlock_write include/linux/fs.h:557 [inline] maybe_drop_rmap_locks mm/mremap.c:197 [inline] move_pgt_entry+0xfa7/0x1170 mm/mremap.c:686 move_page_tables+0xcde/0x2940 mm/mremap.c:1367 copy_vma_and_data mm/mremap.c:1807 [inline] move_vma+0xd5e/0x2010 mm/mremap.c:1913 mremap_to+0x7e7/0x8b0 mm/mremap.c:2106 do_mremap mm/mremap.c:2396 [inline] __do_sys_mremap mm/mremap.c:2453 [inline] __se_sys_mremap+0x8f5/0xc60 mm/mremap.c:2421 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: 0033:0x7f33da2e43b9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 1d 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:00007f33da273168 EFLAGS: 00000246 ORIG_RAX: 0000000000000019 RAX: ffffffffffffffda RBX: 00007f33da3673f8 RCX: 00007f33da2e43b9 RDX: 0000000000200000 RSI: 0000000000600600 RDI: 0000200000000000 RBP: 00007f33da3673f0 R08: 0000200000a00000 R09: 0000000000000000 R10: 0000000000000003 R11: 0000000000000246 R12: 00007f33da3673fc R13: 000000000000006e R14: 00007ffccf0ef660 R15: 00007ffccf0ef748 --- 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. 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