Hello, syzbot found the following issue on: HEAD commit: 78124b0c1d10 Merge branch 'for-next/core' 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=111b0e71680000 kernel config: https://syzkaller.appspot.com/x/.config?x=f27cd6e68911e026 dashboard link: https://syzkaller.appspot.com/bug?extid=89edd67979b52675ddec compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: arm64 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=16b8e671680000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=125a9df5680000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/bd512de820ae/disk-78124b0c.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/a47a437b1d4f/vmlinux-78124b0c.xz kernel image: https://storage.googleapis.com/syzbot-assets/3ae8b966bcd7/Image-78124b0c.gz.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+89edd67979b52675ddec@xxxxxxxxxxxxxxxxxxxxxxxxx Unable to handle kernel paging request at virtual address dfff800000000004 KASAN: null-ptr-deref in range [0x0000000000000020-0x0000000000000027] Mem abort info: ESR = 0x0000000096000005 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x05: level 1 translation fault Data abort info: ISV = 0, ISS = 0x00000005, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 [dfff800000000004] address between user and kernel address ranges Internal error: Oops: 0000000096000005 [#1] PREEMPT SMP Modules linked in: CPU: 0 PID: 7952 Comm: syz-executor682 Not tainted 6.6.0-rc6-syzkaller-g78124b0c1d10 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023 pstate: 804000c5 (Nzcv daIF +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : __lock_acquire+0x104/0x75e8 kernel/locking/lockdep.c:5004 lr : lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753 sp : ffff800098f26d40 x29: ffff800098f27000 x28: ffff8000808df4bc x27: ffff7000131e4e18 x26: 1ffff00011c340b9 x25: 0000000000000000 x24: 0000000000000000 x23: ffff7000131e4dd0 x22: 0000000000000000 x21: 0000000000000000 x20: 0000000000000000 x19: 0000000000000022 x18: ffff800098f27750 x17: 0000ffff833dafff x16: ffff80008a632120 x15: 0000000000000001 x14: ffff80008e1a05d0 x13: ffff800098f26e80 x12: dfff800000000000 x11: ffff800080319468 x10: ffff80008e1a05cc x9 : 00000000000000f3 x8 : 0000000000000004 x7 : ffff8000808df4bc x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000001 x3 : 0000000000000000 x2 : 0000000000000000 x1 : 0000000000000000 x0 : 0000000000000022 Call trace: __lock_acquire+0x104/0x75e8 kernel/locking/lockdep.c:5004 lock_acquire+0x23c/0x71c kernel/locking/lockdep.c:5753 __raw_spin_lock include/linux/spinlock_api_smp.h:133 [inline] _raw_spin_lock+0x48/0x60 kernel/locking/spinlock.c:154 spin_lock include/linux/spinlock.h:351 [inline] __pte_offset_map_lock+0x154/0x360 mm/pgtable-generic.c:373 pte_offset_map_lock include/linux/mm.h:2939 [inline] filemap_map_pages+0x698/0x11f0 mm/filemap.c:3582 do_fault_around mm/memory.c:4525 [inline] do_read_fault mm/memory.c:4558 [inline] do_fault mm/memory.c:4705 [inline] do_pte_missing mm/memory.c:3669 [inline] handle_pte_fault mm/memory.c:4978 [inline] __handle_mm_fault mm/memory.c:5119 [inline] handle_mm_fault+0x326c/0x49fc mm/memory.c:5284 faultin_page mm/gup.c:956 [inline] __get_user_pages+0x3e0/0xa24 mm/gup.c:1239 populate_vma_page_range+0x254/0x328 mm/gup.c:1666 __mm_populate+0x240/0x3d8 mm/gup.c:1775 mm_populate include/linux/mm.h:3305 [inline] vm_mmap_pgoff+0x2bc/0x3d4 mm/util.c:551 ksys_mmap_pgoff+0xd0/0x5b0 mm/mmap.c:1400 __do_sys_mmap arch/arm64/kernel/sys.c:28 [inline] __se_sys_mmap arch/arm64/kernel/sys.c:21 [inline] __arm64_sys_mmap+0xf8/0x110 arch/arm64/kernel/sys.c:21 __invoke_syscall arch/arm64/kernel/syscall.c:37 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:51 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:136 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:155 el0_svc+0x54/0x158 arch/arm64/kernel/entry-common.c:678 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:696 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:595 Code: b006f948 b943a108 34000208 d343fe68 (386c6908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: b006f948 adrp x8, 0xdf29000 4: b943a108 ldr w8, [x8, #928] 8: 34000208 cbz w8, 0x48 c: d343fe68 lsr x8, x19, #3 * 10: 386c6908 ldrb w8, [x8, x12] <-- trapping instruction --- 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. If the bug is already fixed, 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 bug's subsystems, reply with: #syz set subsystems: new-subsystem (See the list of subsystem names on the web dashboard) If the bug is a duplicate of another bug, reply with: #syz dup: exact-subject-of-another-report If you want to undo deduplication, reply with: #syz undup
