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and num_active_vmas update in internally From: syzbot ci To: akpm@linux-foundation.org, david@redhat.com, harry.yoo@oracle.com, liam.howlett@oracle.com, linux-kernel@vger.kernel.org, linux-mm@kvack.org, lorenzo.stoakes@oracle.com, riel@surriel.com, vbabka@suse.cz, yajun.deng@linux.dev Cc: syzbot@lists.linux.dev, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" X-Rspamd-Server: rspam10 X-Rspamd-Queue-Id: 6DE3740008 X-Stat-Signature: mg8ptx35jzgowwcmdshb3gfb8w8aqugu X-Rspam-User: X-HE-Tag: 1757314461-458712 X-HE-Meta: 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 5yc+/zAa 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 hKdpD2LP 6MeZyWpovm1jHqpBPV6Zrm0hetpJ+Fy8/HpxXMto0l2GYlpUde+7pknXtRQOTOPU6943VJsn+hAVk+ok0YSLTQ== 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: syzbot ci has tested the following series [v1] mm/rmap: make num_children and num_active_vmas update in internally https://lore.kernel.org/all/20250905132019.18915-1-yajun.deng@linux.dev * [PATCH] mm/rmap: make num_children and num_active_vmas update in internally and found the following issue: WARNING in unlink_anon_vmas Full report is available here: https://ci.syzbot.org/series/8f2c8574-826d-4951-a11c-201f9e6fa666 *** WARNING in unlink_anon_vmas tree: torvalds URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/torvalds/linux base: b320789d6883cc00ac78ce83bccbfe7ed58afcf0 arch: amd64 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 config: https://ci.syzbot.org/builds/6702bc54-be0f-4db2-85d2-1488a2ec7040/config ------------[ cut here ]------------ WARNING: CPU: 1 PID: 5260 at mm/rmap.c:444 unlink_anon_vmas+0x63c/0x670 Modules linked in: CPU: 1 UID: 0 PID: 5260 Comm: mount Not tainted syzkaller #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:unlink_anon_vmas+0x63c/0x670 Code: 08 00 48 3b 6c 24 08 74 29 e8 30 7e af ff 49 89 ee e9 d0 fd ff ff e8 23 7e af ff 90 0f 0b 90 e9 4e fe ff ff e8 15 7e af ff 90 <0f> 0b 90 e9 82 fe ff ff e8 07 7e af ff eb 05 e8 00 7e af ff 48 83 RSP: 0018:ffffc90001bef878 EFLAGS: 00010293 RAX: ffffffff82102ffb RBX: ffff888109476118 RCX: ffff8880215d9cc0 RDX: 0000000000000000 RSI: ffffffffffffffff RDI: 0000000000000000 RBP: ffff88810f31e030 R08: ffff88810947611f R09: 1ffff1102128ec23 R10: dffffc0000000000 R11: ffffed102128ec24 R12: ffffffffffffffff R13: 1ffff110212a6ce2 R14: ffff888109536710 R15: ffff888109476110 FS: 0000000000000000(0000) GS:ffff8881a3c18000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f8adf7b0440 CR3: 000000000df36000 CR4: 00000000000006f0 Call Trace: free_pgtables+0x72b/0x9c0 exit_mmap+0x444/0xb50 __mmput+0x118/0x420 exit_mm+0x1da/0x2c0 do_exit+0x648/0x2300 do_group_exit+0x21c/0x2d0 __x64_sys_exit_group+0x3f/0x40 x64_sys_call+0x21f7/0x2200 do_syscall_64+0xfa/0x3b0 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f8adf86ea90 Code: Unable to access opcode bytes at 0x7f8adf86ea66. RSP: 002b:00007fffb8de8148 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 00007f8adf95f860 RCX: 00007f8adf86ea90 RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000 RBP: 00007f8adf95f860 R08: 00007fffb8de7fc0 R09: 00007fffb8de80a0 R10: 00007fffb8de8000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f8adf963658 R15: 0000000000000001 *** If these findings have caused you to resend the series or submit a separate fix, please add the following tag to your commit message: Tested-by: syzbot@syzkaller.appspotmail.com --- This report is generated by a bot. It may contain errors. syzbot ci engineers can be reached at syzkaller@googlegroups.com.