Hello, syzbot found the following issue on: HEAD commit: 1621b6eaebf7 Merge branch 'for-next/fixes' into for-kernelci 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=13bd511e880000 kernel config: https://syzkaller.appspot.com/x/.config?x=606e57fd25c5c6cc dashboard link: https://syzkaller.appspot.com/bug?extid=d07c65298d2c15eafcb0 compiler: Debian clang version 13.0.1-++20220126092033+75e33f71c2da-1~exp1~20220126212112.63, GNU ld (GNU Binutils for Debian) 2.35.2 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=13315856880000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=173614d1880000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/82aa7741098d/disk-1621b6ea.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/f6be08c4e4c2/vmlinux-1621b6ea.xz kernel image: https://storage.googleapis.com/syzbot-assets/296b6946258a/Image-1621b6ea.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+d07c65298d2c15eafcb0@xxxxxxxxxxxxxxxxxxxxxxxxx ------------[ cut here ]------------ DEBUG_LOCKS_WARN_ON(!test_bit(class_idx, lock_classes_in_use)) WARNING: CPU: 1 PID: 3290 at kernel/locking/lockdep.c:5025 __lock_acquire+0x2758/0x3084 Modules linked in: CPU: 1 PID: 3290 Comm: syz-executor317 Not tainted 6.1.0-rc4-syzkaller-31872-g1621b6eaebf7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/30/2022 pstate: 604000c5 (nZCv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lock_acquire+0x2758/0x3084 lr : __lock_acquire+0x2754/0x3084 kernel/locking/lockdep.c:5025 sp : ffff800012e3b3e0 x29: ffff800012e3b4c0 x28: 0000000000000001 x27: ffff0000cb891a68 x26: ffff0000cb892450 x25: ffff0000cb892470 x24: ffff0000cb892470 x23: 00000000000000c0 x22: 0000000000000001 x21: 0000000000000000 x20: ffff0000cb891a40 x19: aaaaaa0000fb22ca x18: 0000000000000358 x17: ffff80000c04d83c x16: 0000000000000000 x15: 0000000000000000 x14: 0000000000000000 x13: 0000000000000012 x12: ffff80000d86ff30 x11: ff808000081c06c8 x10: 0000000000000000 x9 : ddc86c2f228f9600 x8 : ddc86c2f228f9600 x7 : 4e5241575f534b43 x6 : ffff80000c01775c x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000100000000 x0 : 0000000000000000 Call trace: __lock_acquire+0x2758/0x3084 reacquire_held_locks+0x120/0x1c0 kernel/locking/lockdep.c:5193 __lock_release kernel/locking/lockdep.c:5382 [inline] lock_release+0x148/0x2b4 kernel/locking/lockdep.c:5688 __mutex_unlock_slowpath+0x44/0x1cc kernel/locking/mutex.c:907 mutex_unlock+0x24/0x30 kernel/locking/mutex.c:543 hugetlb_no_page+0x284/0xe1c mm/hugetlb.c:5771 hugetlb_fault+0x3a0/0xdfc mm/hugetlb.c:5874 handle_mm_fault+0x904/0xa48 mm/memory.c:5216 __do_page_fault arch/arm64/mm/fault.c:506 [inline] do_page_fault+0x428/0x79c arch/arm64/mm/fault.c:606 do_translation_fault+0x78/0x194 arch/arm64/mm/fault.c:689 do_mem_abort+0x54/0x130 arch/arm64/mm/fault.c:825 el1_abort+0x3c/0x5c arch/arm64/kernel/entry-common.c:367 el1h_64_sync_handler+0x60/0xac arch/arm64/kernel/entry-common.c:427 el1h_64_sync+0x64/0x68 arch/arm64/kernel/entry.S:579 __arch_copy_from_user+0x24/0x1f4 arch/arm64/lib/copy_from_user.S:77 __import_iovec+0x60/0x248 lib/iov_iter.c:1773 import_iovec+0x6c/0x88 lib/iov_iter.c:1838 vfs_writev fs/read_write.c:931 [inline] do_writev+0xf8/0x234 fs/read_write.c:977 __do_sys_writev fs/read_write.c:1050 [inline] __se_sys_writev fs/read_write.c:1047 [inline] __arm64_sys_writev+0x28/0x38 fs/read_write.c:1047 __invoke_syscall arch/arm64/kernel/syscall.c:38 [inline] invoke_syscall arch/arm64/kernel/syscall.c:52 [inline] el0_svc_common+0x138/0x220 arch/arm64/kernel/syscall.c:142 do_el0_svc+0x48/0x164 arch/arm64/kernel/syscall.c:206 el0_svc+0x58/0x150 arch/arm64/kernel/entry-common.c:637 el0t_64_sync_handler+0x84/0xf0 arch/arm64/kernel/entry-common.c:655 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:584 irq event stamp: 941 hardirqs last enabled at (941): [<ffff80000c01c86c>] __raw_spin_unlock_irq include/linux/spinlock_api_smp.h:159 [inline] hardirqs last enabled at (941): [<ffff80000c01c86c>] _raw_spin_unlock_irq+0x3c/0x70 kernel/locking/spinlock.c:202 hardirqs last disabled at (940): [<ffff80000c01c66c>] __raw_spin_lock_irq include/linux/spinlock_api_smp.h:117 [inline] hardirqs last disabled at (940): [<ffff80000c01c66c>] _raw_spin_lock_irq+0x34/0x9c kernel/locking/spinlock.c:170 softirqs last enabled at (744): [<ffff80000801c38c>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32 softirqs last disabled at (742): [<ffff80000801c358>] local_bh_disable+0x10/0x34 include/linux/bottom_half.h:19 ---[ end trace 0000000000000000 ]--- --- 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@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot. syzbot can test patches for this issue, for details see: https://goo.gl/tpsmEJ#testing-patches
