Unable to handle kernel paging request at virtual address ffff7fbff7e00005 KASAN: probably wild-memory-access in range [0xfffffdffbf000028-0xfffffdffbf00002f] Mem abort info: ESR = 0x0000000096000007 EC = 0x25: DABT (current EL), IL = 32 bits SET = 0, FnV = 0 EA = 0, S1PTW = 0 FSC = 0x07: level 3 translation fault Data abort info: ISV = 0, ISS = 0x00000007, ISS2 = 0x00000000 CM = 0, WnR = 0, TnD = 0, TagAccess = 0 GCS = 0, Overlay = 0, DirtyBit = 0, Xs = 0 swapper pgtable: 4k pages, 48-bit VAs, pgdp=00000001ad5df000 [ffff7fbff7e00005] pgd=0000000000000000, p4d=1000000233f64003, pud=1000000233f63003, pmd=1000000233f62003, pte=0000000000000000 Internal error: Oops: 0000000096000007 [#1] PREEMPT SMP Modules linked in: CPU: 1 PID: 9645 Comm: syz-executor.2 Not tainted 6.9.0-rc7-syzkaller-g1c9135d29e9e #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 03/27/2024 pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--) pc : ptlock_ptr include/linux/mm.h:2891 [inline] pc : pte_lockptr include/linux/mm.h:2915 [inline] pc : __pte_offset_map_lock+0x15c/0x2ac mm/pgtable-generic.c:372 lr : __pte_offset_map_lock+0xe0/0x2ac sp : ffff800099856c80 x29: ffff800099856d40 x28: fffeffffc0000000 x27: 0000000020e00000 x26: fffffdffbf000028 x25: ffff70001330ad98 x24: ffff800099856ce0 x23: 1ffff0001330ada0 x22: ffff800099856d00 x21: ffff0000d0f3d838 x20: dfff800000000000 x19: 0000000000000000 x18: ffff800099856960 x17: 0000000000043b8d x16: ffff80008ae89e3c x15: 0000000000000002 x14: ffff80008eea0668 x13: dfff800000000000 x12: 00000000ee5fd2b8 x11: 1fffe0001a1e7b07 x10: ffffc1ffc0000000 x9 : 0000000000000000 x8 : 1fffffbff7e00005 x7 : ffff80008095558c x6 : 0000000000000000 x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000002 x2 : 0000000000000008 x1 : 0000000000000000 x0 : ffff80008e839e40 Call trace: ptlock_ptr include/linux/mm.h:2891 [inline] pte_lockptr include/linux/mm.h:2915 [inline] __pte_offset_map_lock+0x15c/0x2ac mm/pgtable-generic.c:372 pte_offset_map_lock include/linux/mm.h:2980 [inline] zap_pte_range mm/memory.c:1584 [inline] zap_pmd_range mm/memory.c:1722 [inline] zap_pud_range mm/memory.c:1751 [inline] zap_p4d_range mm/memory.c:1772 [inline] unmap_page_range+0x910/0x2f28 mm/memory.c:1793 unmap_single_vma mm/memory.c:1839 [inline] zap_page_range_single+0x3d8/0x5d4 mm/memory.c:1918 unmap_mapping_range_vma mm/memory.c:3667 [inline] unmap_mapping_range_tree mm/memory.c:3684 [inline] unmap_mapping_pages mm/memory.c:3750 [inline] unmap_mapping_range+0x204/0x24c mm/memory.c:3787 shmem_fallocate+0x31c/0xc58 mm/shmem.c:3116 vfs_fallocate+0x480/0x5bc fs/open.c:330 madvise_remove mm/madvise.c:989 [inline] madvise_vma_behavior mm/madvise.c:1013 [inline] madvise_walk_vmas mm/madvise.c:1248 [inline] do_madvise+0x16e0/0x2fcc mm/madvise.c:1428 __do_sys_madvise mm/madvise.c:1441 [inline] __se_sys_madvise mm/madvise.c:1439 [inline] __arm64_sys_madvise+0xa4/0xc0 mm/madvise.c:1439 __invoke_syscall arch/arm64/kernel/syscall.c:34 [inline] invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:48 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:133 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:152 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:712 el0t_64_sync_handler+0x84/0xfc arch/arm64/kernel/entry-common.c:730 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598 Code: aa09a908 8b481b48 9100a11a d343ff48 (38746908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: aa09a908 orr x8, x8, x9, lsl #42 4: 8b481b48 add x8, x26, x8, lsr #6 8: 9100a11a add x26, x8, #0x28 c: d343ff48 lsr x8, x26, #3 * 10: 38746908 ldrb w8, [x8, x20] <-- trapping instruction