EXT4-fs (loop5): mounted filesystem 76b65be2-f6da-4727-8c75-0525a5b65a09 r/w without journal. Quota mode: writeback. Unable to handle kernel paging request at virtual address ffff7000168af200 KASAN: probably wild-memory-access in range [0xffff8000b4579000-0xffff8000b4579007] 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 swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000021b049000 [ffff7000168af200] pgd=0000000000000000, p4d=000000023ea12003, pud=000000023ea11003, pmd=100000015f13d403, pte=0000000000000000 Internal error: Oops: 0000000096000007 [#1] SMP Modules linked in: CPU: 0 UID: 0 PID: 10427 Comm: syz.5.1019 Tainted: G L syzkaller #0 PREEMPT Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/07/2026 pstate: 83400005 (Nzcv daif +PAN -UAO +TCO +DIT -SSBS BTYPE=--) pc : fb_write_offset drivers/video/fbdev/core/sysmem.h:30 [inline] pc : fb_bitmap_2ppw drivers/video/fbdev/core/fb_imageblit.h:364 [inline] pc : fb_bitmap_imageblit drivers/video/fbdev/core/fb_imageblit.h:462 [inline] pc : fb_imageblit drivers/video/fbdev/core/fb_imageblit.h:492 [inline] pc : sys_imageblit+0xc14/0x1758 drivers/video/fbdev/core/sysimgblt.c:24 lr : sys_imageblit+0xb88/0x1758 drivers/video/fbdev/core/fb_imageblit.h:-1 sp : ffff800090f77180 x29: ffff800090f77200 x28: dfff800000000000 x27: 0000000000000000 x26: ffff8000b4579000 x25: ffff0000c55881c8 x24: 0000000000000004 x23: 00000000000000ff x22: ffff8000b4579000 x21: dfff800000000000 x20: ffff0000c55881c9 x19: ffff800090f771d8 x18: 1fffe00034bb7428 x17: 0000000000000003 x16: ffff800088b37000 x15: ffff800080ce5e84 x14: ffff0000c7723158 x13: 0000000000000009 x12: 00000000ffffffff x11: ffff800094679000 x10: 1ffff000121eee79 x9 : 0000000000000003 x8 : 1ffff000168af200 x7 : 0000000000000000 x6 : 0000000000000007 x5 : 0000000000000000 x4 : 0000000000000008 x3 : ffff800081dafb78 x2 : 0000000000000008 x1 : ffff0000cca1d7c0 x0 : 0000000000000000 Call trace: fb_write_offset drivers/video/fbdev/core/sysmem.h:30 [inline] (P) fb_bitmap_2ppw drivers/video/fbdev/core/fb_imageblit.h:364 [inline] (P) fb_bitmap_imageblit drivers/video/fbdev/core/fb_imageblit.h:462 [inline] (P) fb_imageblit drivers/video/fbdev/core/fb_imageblit.h:492 [inline] (P) sys_imageblit+0xc14/0x1758 drivers/video/fbdev/core/sysimgblt.c:24 (P) drm_fbdev_shmem_defio_imageblit+0x38/0x144 drivers/gpu/drm/drm_fbdev_shmem.c:39 ccw_putcs_aligned drivers/video/fbdev/core/fbcon_ccw.c:126 [inline] ccw_putcs+0x6a4/0x8c8 drivers/video/fbdev/core/fbcon_ccw.c:176 fbcon_putcs+0x258/0x390 drivers/video/fbdev/core/fbcon.c:1392 do_update_region+0x31c/0x3c8 drivers/tty/vt/vt.c:656 redraw_screen+0x388/0x51c drivers/tty/vt/vt.c:1008 vc_do_resize+0x884/0xbbc drivers/tty/vt/vt.c:1309 __vc_resize+0x60/0x74 drivers/tty/vt/vt.c:1331 vc_resize include/linux/vt_kern.h:49 [inline] fbcon_do_set_font+0x3d8/0x734 drivers/video/fbdev/core/fbcon.c:2435 fbcon_set_font+0x4f0/0x6ac drivers/video/fbdev/core/fbcon.c:2518 con_font_set drivers/tty/vt/vt.c:4992 [inline] con_font_op+0x98c/0xc6c drivers/tty/vt/vt.c:5032 vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] vt_ioctl+0x1664/0x1d4c drivers/tty/vt/vt_ioctl.c:745 tty_ioctl+0x828/0xcb0 drivers/tty/tty_io.c:2792 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:597 [inline] __se_sys_ioctl fs/ioctl.c:583 [inline] __arm64_sys_ioctl+0x154/0x1cc fs/ioctl.c:583 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline] invoke_syscall+0x98/0x244 arch/arm64/kernel/syscall.c:49 el0_svc_common+0xec/0x23c arch/arm64/kernel/syscall.c:121 do_el0_svc+0x4c/0x5c arch/arm64/kernel/syscall.c:140 el0_svc+0x64/0x260 arch/arm64/kernel/entry-common.c:758 el0t_64_sync_handler+0x44/0x104 arch/arm64/kernel/entry-common.c:777 el0t_64_sync+0x198/0x19c arch/arm64/kernel/entry.S:590 Code: d2d0001c d346fee9 f2fbfffc d343ff48 (38756908) ---[ end trace 0000000000000000 ]--- ---------------- Code disassembly (best guess): 0: d2d0001c mov x28, #0x800000000000 // #140737488355328 4: d346fee9 lsr x9, x23, #6 8: f2fbfffc movk x28, #0xdfff, lsl #48 c: d343ff48 lsr x8, x26, #3 * 10: 38756908 ldrb w8, [x8, x21] <-- trapping instruction