syzbot has found a reproducer for the following issue on: HEAD commit: a901a3568fd2 Merge tag 'iomap-6.5-merge-1' of git://git.ke.. git tree: upstream console+strace: https://syzkaller.appspot.com/x/log.txt?x=131dbb80a80000 kernel config: https://syzkaller.appspot.com/x/.config?x=12d3428a307a1111 dashboard link: https://syzkaller.appspot.com/bug?extid=a537ff48a9cb940d314c 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=1489ffb8a80000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=145c302ca80000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/d5b4ad8feb6a/disk-a901a356.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b59c91556f58/vmlinux-a901a356.xz kernel image: https://storage.googleapis.com/syzbot-assets/dcd583b21e5c/bzImage-a901a356.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/45e4aa281996/mount_2.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+a537ff48a9cb940d314c@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ Looking for class "&ei->i_data_sem" with key __key.0, but found a different class "&ei->i_data_sem" with the same key WARNING: CPU: 1 PID: 5185 at kernel/locking/lockdep.c:940 look_up_lock_class+0xac/0x130 kernel/locking/lockdep.c:940 Modules linked in: CPU: 1 PID: 5185 Comm: syz-executor404 Not tainted 6.4.0-syzkaller-10173-ga901a3568fd2 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/27/2023 RIP: 0010:look_up_lock_class+0xac/0x130 kernel/locking/lockdep.c:940 Code: 39 48 8b 55 00 48 81 fa a0 b9 48 90 74 2c 80 3d d3 f3 75 04 00 75 23 48 c7 c7 40 6e 6c 8a c6 05 c3 f3 75 04 01 e8 a4 2f 2e f7 <0f> 0b eb 0c e8 ab 5b f5 f9 85 c0 75 48 45 31 e4 48 83 c4 08 4c 89 RSP: 0018:ffffc90003e5f808 EFLAGS: 00010082 RAX: 0000000000000000 RBX: ffffffff92256381 RCX: 0000000000000000 RDX: ffff888021afd940 RSI: ffffffff814c24f7 RDI: 0000000000000001 RBP: ffff8880745ce688 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: ffffffff918a84f0 R13: 0000000000000001 R14: ffff8880745ce688 R15: 0000000000000000 FS: 0000555557100300(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9070243138 CR3: 0000000015297000 CR4: 0000000000350ee0 Call Trace: <TASK> register_lock_class+0xbe/0x1120 kernel/locking/lockdep.c:1292 __lock_acquire+0x109/0x5e20 kernel/locking/lockdep.c:5021 lock_acquire kernel/locking/lockdep.c:5761 [inline] lock_acquire+0x1b1/0x520 kernel/locking/lockdep.c:5726 down_write_nested+0x96/0x200 kernel/locking/rwsem.c:1689 ext4_double_down_write_data_sem+0x67/0x80 fs/ext4/move_extent.c:58 swap_inode_boot_loader fs/ext4/ioctl.c:423 [inline] __ext4_ioctl+0x2942/0x4650 fs/ext4/ioctl.c:1427 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+0x19d/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f90701d1249 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 51 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 c0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffdf78879a8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 69662f7375622f2e RCX: 00007f90701d1249 RDX: 0000000000000000 RSI: 0000000000006611 RDI: 0000000000000003 RBP: 0000000000000000 R08: 00007ffdf78879d0 R09: 00007ffdf78879d0 R10: 00007ffdf7887420 R11: 0000000000000246 R12: 00007ffdf78879cc R13: 00007ffdf7887a20 R14: 00007ffdf78879e0 R15: 000000000000003d </TASK> --- 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.
