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Mon, 08 Aug 2022 12:33:21 -0700 (PDT) Date: Mon, 08 Aug 2022 12:33:21 -0700 In-Reply-To: <00000000000085cb1705e5b5d9f6@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <0000000000007cda2705e5bfe389@google.com> Subject: Re: [syzbot] WARNING in find_vma From: syzbot To: akpm@linux-foundation.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com Content-Type: text/plain; charset="UTF-8" ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1659987202; a=rsa-sha256; cv=none; b=18Kv1+0cfy+mol8R5Homi+QEsbUVkJ4QZ36EUSvR3tJ546NZUFCdYgY0fsZJoox0NzeFkn xi4qWy/x9sYo1vnnKFgo05g1ORMgwpm5w1AX0+1NYk1NXBNa4BBu/3VCxdo8s5WamgH09g 1VIPqCL38hFuSYGpiuVYSfQpwDQm58w= ARC-Authentication-Results: i=1; imf23.hostedemail.com; dkim=none; spf=pass (imf23.hostedemail.com: domain of 3AWXxYgkbAK4gmnYOZZSfOddWR.UccUZSigSfQcbhSbh.Qca@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com designates 209.85.166.200 as permitted sender) smtp.mailfrom=3AWXxYgkbAK4gmnYOZZSfOddWR.UccUZSigSfQcbhSbh.Qca@M3KW2WVRGUFZ5GODRSRYTGD7.apphosting.bounces.google.com; 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dmarc=fail reason="SPF not aligned (relaxed), No valid DKIM" header.from=appspotmail.com (policy=none) X-Rspam-User: X-Rspamd-Server: rspam01 X-HE-Tag: 1659987202-531722 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: syzbot has found a reproducer for the following issue on: HEAD commit: ca688bff68bc Add linux-next specific files for 20220808 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14807dfa080000 kernel config: https://syzkaller.appspot.com/x/.config?x=4c20e006003cdecb dashboard link: https://syzkaller.appspot.com/bug?extid=a7b60a176ec13cafb793 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=12999232080000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15452c12080000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a7b60a176ec13cafb793@syzkaller.appspotmail.com binder: 7796:7797 ioctl c0306201 20001480 returned -14 ------------[ cut here ]------------ WARNING: CPU: 1 PID: 7797 at include/linux/mmap_lock.h:155 mmap_assert_locked include/linux/mmap_lock.h:155 [inline] WARNING: CPU: 1 PID: 7797 at include/linux/mmap_lock.h:155 find_vma+0xf8/0x270 mm/mmap.c:2255 Modules linked in: CPU: 1 PID: 7797 Comm: syz-executor269 Not tainted 5.19.0-next-20220808-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/22/2022 RIP: 0010:mmap_assert_locked include/linux/mmap_lock.h:155 [inline] RIP: 0010:find_vma+0xf8/0x270 mm/mmap.c:2255 Code: 49 8d bc 24 28 01 00 00 be ff ff ff ff e8 40 2e c8 07 31 ff 89 c3 89 c6 e8 85 e2 c4 ff 85 db 0f 85 61 ff ff ff e8 b8 e5 c4 ff <0f> 0b e9 55 ff ff ff e8 ac e5 c4 ff 4c 89 e7 e8 54 38 fb ff 0f 0b RSP: 0018:ffffc9000cee7530 EFLAGS: 00010293 RAX: 0000000000000000 RBX: 0000000000000000 RCX: 0000000000000000 RDX: ffff88807c278000 RSI: ffffffff81b72058 RDI: 0000000000000005 RBP: 0000000020ffc000 R08: 0000000000000005 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: ffff88807dda3100 R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f5fdf1fb700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 000000007d391000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: vma_lookup include/linux/mm.h:2743 [inline] binder_alloc_get_vma drivers/android/binder_alloc.c:340 [inline] binder_alloc_new_buf_locked drivers/android/binder_alloc.c:405 [inline] binder_alloc_new_buf+0xd6/0x18b0 drivers/android/binder_alloc.c:590 binder_transaction+0x242e/0x9a80 drivers/android/binder.c:3187 binder_thread_write+0x8a9/0x3220 drivers/android/binder.c:3963 binder_ioctl_write_read drivers/android/binder.c:5024 [inline] binder_ioctl+0x3470/0x6d00 drivers/android/binder.c:5311 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f5fdf24ae19 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 15 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:00007f5fdf1fb318 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f5fdf2d34e8 RCX: 00007f5fdf24ae19 RDX: 0000000020000680 RSI: 00000000c0306201 RDI: 0000000000000003 RBP: 00007f5fdf2d34e0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007f5fdf2a02c0 R13: 00007ffc598955af R14: 00007f5fdf1fb400 R15: 0000000000022000