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ANoB5pm/tbSpyiUuzbnNqYRiy65Eo3bxw497KAGRgzspg2ov3Xr1lvtJ Jyw6bzmAG9Lkl2eiTpk4/cxL9m9U30qIiERWznQ3UJbsxqlh X-Google-Smtp-Source: AA0mqf6Ia0oAutUmIX0aGI/02T24yKYbhKYIt5JebEnniuwDbREF05docSBkOfV4gTmu85eollvx1qMBBlhT8J5egE1DHo/XLS5l MIME-Version: 1.0 X-Received: by 2002:a05:6638:3470:b0:389:c976:846e with SMTP id q48-20020a056638347000b00389c976846emr26967141jav.246.1670695602581; Sat, 10 Dec 2022 10:06:42 -0800 (PST) Date: Sat, 10 Dec 2022 10:06:42 -0800 In-Reply-To: <00000000000064d06705eeed9b4e@google.com> X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <000000000000eb761405ef7d2113@google.com> Subject: Re: [syzbot] WARNING in do_mkdirat From: syzbot To: dvyukov@google.com, elver@google.com, hdanton@sina.com, linux-fsdevel@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mm@kvack.org, syzkaller-bugs@googlegroups.com, viro@zeniv.linux.org.uk, willy@infradead.org Content-Type: text/plain; charset="UTF-8" X-Rspam-User: X-Rspamd-Server: rspam04 X-Rspamd-Queue-Id: 5726F180013 X-Stat-Signature: a8xh9i1po1j8gfqbkk3e8d41snj6gw9z X-HE-Tag: 1670695603-490325 X-HE-Meta: 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 f072rxSH 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 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: 3ecc37918c80 Merge tag 'media/v6.1-4' of git://git.kernel... git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=13ae071d880000 kernel config: https://syzkaller.appspot.com/x/.config?x=d58e7fe7f9cf5e24 dashboard link: https://syzkaller.appspot.com/bug?extid=919c5a9be8433b8bf201 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10aaf2b7880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17b652b7880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/be14794fd26b/disk-3ecc3791.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/35b850996388/vmlinux-3ecc3791.xz kernel image: https://storage.googleapis.com/syzbot-assets/0eec0f8f6777/bzImage-3ecc3791.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/547e98eae9c0/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+919c5a9be8433b8bf201@syzkaller.appspotmail.com ------------[ cut here ]------------ DEBUG_RWSEMS_WARN_ON((rwsem_owner(sem) != current) && !rwsem_test_oflags(sem, RWSEM_NONSPINNABLE)): count = 0x0, magic = 0xffff888072216a70, owner = 0x0, curr 0xffff888078ce57c0, list empty WARNING: CPU: 0 PID: 4093 at kernel/locking/rwsem.c:1361 __up_write kernel/locking/rwsem.c:1360 [inline] WARNING: CPU: 0 PID: 4093 at kernel/locking/rwsem.c:1361 up_write+0x4f9/0x580 kernel/locking/rwsem.c:1615 Modules linked in: CPU: 0 PID: 4093 Comm: syz-executor196 Not tainted 6.1.0-rc8-syzkaller-00152-g3ecc37918c80 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/26/2022 RIP: 0010:__up_write kernel/locking/rwsem.c:1360 [inline] RIP: 0010:up_write+0x4f9/0x580 kernel/locking/rwsem.c:1615 Code: c7 c0 a3 ed 8a 48 c7 c6 60 a6 ed 8a 48 8b 54 24 28 48 8b 4c 24 18 4d 89 e0 4c 8b 4c 24 30 31 c0 53 e8 ab 7c e8 ff 48 83 c4 08 <0f> 0b e9 6b fd ff ff 48 c7 c1 18 2a 76 8e 80 e1 07 80 c1 03 38 c1 RSP: 0018:ffffc900043ffd40 EFLAGS: 00010292 RAX: 7c48dcb6c422ab00 RBX: ffffffff8aeda4a0 RCX: ffff888078ce57c0 RDX: 0000000000000000 RSI: 0000000080000000 RDI: 0000000000000000 RBP: ffffc900043ffe10 R08: ffffffff816e5c7d R09: fffff5200087ff21 R10: fffff5200087ff21 R11: 1ffff9200087ff20 R12: 0000000000000000 R13: ffff888072216a70 R14: 1ffff9200087ffb0 R15: dffffc0000000000 FS: 00007f68743c0700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000000 CR3: 0000000026c1b000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: inode_unlock include/linux/fs.h:761 [inline] done_path_create fs/namei.c:3857 [inline] do_mkdirat+0x2de/0x550 fs/namei.c:4064 __do_sys_mkdirat fs/namei.c:4076 [inline] __se_sys_mkdirat fs/namei.c:4074 [inline] __x64_sys_mkdirat+0x85/0x90 fs/namei.c:4074 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f687c635589 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 71 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:00007f68743c02f8 EFLAGS: 00000246 ORIG_RAX: 0000000000000102 RAX: ffffffffffffffda RBX: 00007f687c6d97b0 RCX: 00007f687c635589 RDX: 0000000000000000 RSI: 0000000020000200 RDI: 0000000000000004 RBP: 00007f687c6d97bc R08: 00007f68743c0700 R09: 0000000000000000 R10: 00007f68743c0700 R11: 0000000000000246 R12: 00007f687c6a6258 R13: 0032656c69662f2e R14: 69662f7375622f2e R15: 00007f687c6d97b8