syzbot has found a reproducer for the following issue on: HEAD commit: d8b213732169 Merge branch 'for-next/core', remote-tracking.. git tree: git://git.kernel.org/pub/scm/linux/kernel/git/arm64/linux.git for-kernelci console output: https://syzkaller.appspot.com/x/log.txt?x=15e74543280000 kernel config: https://syzkaller.appspot.com/x/.config?x=bd4213541e5ab26f dashboard link: https://syzkaller.appspot.com/bug?extid=7f4a6f7f7051474e40ad compiler: Debian clang version 15.0.7, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=139801f1280000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17a928ab280000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/3d15de852c90/disk-d8b21373.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/ca6234ed6efc/vmlinux-d8b21373.xz kernel image: https://storage.googleapis.com/syzbot-assets/0fc706ec33bb/Image-d8b21373.gz.xz mounted in repro: https://storage.googleapis.com/syzbot-assets/a5ab37037d85/mount_0.gz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+7f4a6f7f7051474e40ad@xxxxxxxxxxxxxxxxxxxxxxxxx loop0: detected capacity change from 0 to 512 ------------[ cut here ]------------ Looking for class "&ei->i_data_sem" with key init_once.__key.775, but found a different class "&ei->i_data_sem" with the same key WARNING: CPU: 0 PID: 6198 at kernel/locking/lockdep.c:941 look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:938 Modules linked in: CPU: 0 PID: 6198 Comm: syz-executor258 Not tainted 6.4.0-rc5-syzkaller-gd8b213732169 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/25/2023 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:938 lr : look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:938 sp : ffff800097187040 x29: ffff800097187040 x28: dfff800000000000 x27: ffff800080edb4a4 x26: ffff80009222c6e0 x25: ffff80009222c000 x24: 0000000000000000 x23: 0000000000000000 x22: 0000000000000000 x21: ffff8000923bfc61 x20: ffff0000e0293488 x19: ffff800090e7b1c0 x18: 0000000000000000 x17: 0000000000000000 x16: ffff80008a43bfbc x15: 0000000000000002 x14: 0000000000000000 x13: 0000000000000001 x12: 0000000000000001 x11: 0000000000000000 x10: 0000000000000000 x9 : 5933e84718dc2000 x8 : 5933e84718dc2000 x7 : 0000000000000001 x6 : 0000000000000001 x5 : ffff800097186938 x4 : ffff80008df9ee80 x3 : ffff8000805974f4 x2 : 0000000000000001 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: look_up_lock_class+0xec/0x158 kernel/locking/lockdep.c:938 register_lock_class+0x8c/0x6a4 kernel/locking/lockdep.c:1290 __lock_acquire+0x184/0x7604 kernel/locking/lockdep.c:4965 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5705 down_write_nested+0x58/0xcc kernel/locking/rwsem.c:1689 ext4_double_down_write_data_sem+0x3c/0x4c ext4_move_extents+0x2b0/0xb44 fs/ext4/move_extent.c:621 __ext4_ioctl fs/ext4/ioctl.c:1352 [inline] ext4_ioctl+0x3eb4/0x6910 fs/ext4/ioctl.c:1608 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __arm64_sys_ioctl+0x14c/0x1c8 fs/ioctl.c:856 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall+0x98/0x2c0 arch/arm64/kernel/syscall.c:52 el0_svc_common+0x138/0x244 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x64/0x198 arch/arm64/kernel/syscall.c:191 el0_svc+0x4c/0x160 arch/arm64/kernel/entry-common.c:647 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:665 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:591 irq event stamp: 6053 hardirqs last enabled at (6053): [<ffff80008099851c>] kasan_quarantine_put+0x1a0/0x1c8 mm/kasan/quarantine.c:240 hardirqs last disabled at (6052): [<ffff8000809983b4>] kasan_quarantine_put+0x38/0x1c8 mm/kasan/quarantine.c:213 softirqs last enabled at (4378): [<ffff80008003437c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (4376): [<ffff800080034348>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- --- 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.
