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Tue, 09 Sep 2025 14:11:30 -0700 (PDT) Date: Tue, 09 Sep 2025 14:11:30 -0700 X-Google-Appengine-App-Id: s~syzkaller X-Google-Appengine-App-Id-Alias: syzkaller Message-ID: <68c09802.050a0220.3c6139.000e.GAE@google.com> From: syzbot To: chao@kernel.org, jaegeuk@kernel.org, linux-f2fs-devel@lists.sourceforge.net, linux-kernel@vger.kernel.org, syzkaller-bugs@googlegroups.com X-Headers-End: 1uw5cr-0001rU-D0 Subject: [f2fs-dev] [syzbot] [f2fs?] kernel BUG in clear_inode (4) X-BeenThere: linux-f2fs-devel@lists.sourceforge.net X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: linux-f2fs-devel-bounces@lists.sourceforge.net Hello, syzbot found the following issue on: HEAD commit: f777d1112ee5 Merge tag 'vfs-6.17-rc6.fixes' of git://git.k.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=124dad62580000 kernel config: https://syzkaller.appspot.com/x/.config?x=429771c55b615e85 dashboard link: https://syzkaller.appspot.com/bug?extid=90266696fe5daacebd35 compiler: Debian clang version 20.1.8 (++20250708063551+0c9f909b7976-1~exp1~20250708183702.136), Debian LLD 20.1.8 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=15a43562580000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=164dad62580000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/860ff2f591a4/disk-f777d111.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/31f4ca3a76d4/vmlinux-f777d111.xz kernel image: https://storage.googleapis.com/syzbot-assets/c534fac91a74/bzImage-f777d111.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/6c7a25c90276/mount_0.gz fsck result: failed (log: https://syzkaller.appspot.com/x/fsck.log?x=11a43562580000) IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+90266696fe5daacebd35@syzkaller.appspotmail.com loop0: detected capacity change from 0 to 40427 F2FS-fs (loop0): Wrong SSA boundary, start(3584) end(4096) blocks(3072) F2FS-fs (loop0): Can't find valid F2FS filesystem in 1th superblock F2FS-fs (loop0): invalid crc value F2FS-fs (loop0): f2fs_convert_inline_folio: corrupted inline inode ino=3, i_addr[0]:0x1601, run fsck to fix. ------------[ cut here ]------------ kernel BUG at fs/inode.c:753! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 6097 Comm: syz.0.17 Not tainted syzkaller #0 PREEMPT_{RT,(full)} Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:clear_inode+0x169/0x190 fs/inode.c:753 Code: 4c 89 f7 e8 59 7a ec ff e9 60 ff ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 7c c0 4c 89 f7 e8 2f 7b ec ff eb b6 e8 28 40 8d ff 90 <0f> 0b e8 20 40 8d ff 90 0f 0b e8 18 40 8d ff 90 0f 0b e8 10 40 8d RSP: 0018:ffffc9000408f890 EFLAGS: 00010293 RAX: ffffffff82311f78 RBX: ffff888022059300 RCX: ffff888024ced940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000408fa00 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e3ab47 R12: dffffc0000000000 R13: ffff888022059300 R14: ffff888022059558 R15: 0000000000000001 FS: 000055557dd70500(0000) GS:ffff8881268bf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055738e9e8660 CR3: 0000000029a1c000 CR4: 00000000003526f0 Call Trace: evict+0x504/0x9c0 fs/inode.c:810 f2fs_fill_super+0x5612/0x6fa0 fs/f2fs/super.c:5047 get_tree_bdev_flags+0x40e/0x4d0 fs/super.c:1692 vfs_get_tree+0x8f/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3808 do_mount fs/namespace.c:4136 [inline] __do_sys_mount fs/namespace.c:4347 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4324 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: 0033:0x7f865d77038a Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffc62ec72e8 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007ffc62ec7370 RCX: 00007f865d77038a RDX: 0000200000000140 RSI: 00002000000000c0 RDI: 00007ffc62ec7330 RBP: 0000200000000140 R08: 00007ffc62ec7370 R09: 0000000000000008 R10: 0000000000000008 R11: 0000000000000246 R12: 00002000000000c0 R13: 00007ffc62ec7330 R14: 0000000000005531 R15: 00002000000056c0 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:clear_inode+0x169/0x190 fs/inode.c:753 Code: 4c 89 f7 e8 59 7a ec ff e9 60 ff ff ff 44 89 f1 80 e1 07 80 c1 03 38 c1 7c c0 4c 89 f7 e8 2f 7b ec ff eb b6 e8 28 40 8d ff 90 <0f> 0b e8 20 40 8d ff 90 0f 0b e8 18 40 8d ff 90 0f 0b e8 10 40 8d RSP: 0018:ffffc9000408f890 EFLAGS: 00010293 RAX: ffffffff82311f78 RBX: ffff888022059300 RCX: ffff888024ced940 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc9000408fa00 R08: 0000000000000000 R09: 0000000000000000 R10: dffffc0000000000 R11: fffffbfff1e3ab47 R12: dffffc0000000000 R13: ffff888022059300 R14: ffff888022059558 R15: 0000000000000001 FS: 000055557dd70500(0000) GS:ffff8881268bf000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000055738e9e8660 CR3: 0000000029a1c000 CR4: 00000000003526f0 --- 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 _______________________________________________ Linux-f2fs-devel mailing list Linux-f2fs-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/linux-f2fs-devel