Enabling of bearer rejected, failed to enable media loop5: p5 start 450279030 is beyond EOD, truncated loop1: unable to read partition table loop5: p6 start 1884869400 is beyond EOD, truncated ================================================================== BUG: KASAN: slab-out-of-bounds in memcpy include/linux/string.h:348 [inline] BUG: KASAN: slab-out-of-bounds in soft_cursor+0x439/0xa30 drivers/video/fbdev/core/softcursor.c:70 Read of size 8 at addr ffff88809adbe650 by task syz-executor.2/2335 CPU: 0 PID: 2335 Comm: syz-executor.2 Not tainted 4.19.88-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: __dump_stack lib/dump_stack.c:77 [inline] dump_stack+0x197/0x210 lib/dump_stack.c:118 print_address_description.cold+0x7c/0x20d mm/kasan/report.c:256 loop1: partition table beyond EOD, truncated kasan_report_error mm/kasan/report.c:354 [inline] kasan_report mm/kasan/report.c:412 [inline] kasan_report.cold+0x8c/0x2ba mm/kasan/report.c:396 check_memory_region_inline mm/kasan/kasan.c:260 [inline] check_memory_region+0x123/0x190 mm/kasan/kasan.c:267 memcpy+0x24/0x50 mm/kasan/kasan.c:302 memcpy include/linux/string.h:348 [inline] soft_cursor+0x439/0xa30 drivers/video/fbdev/core/softcursor.c:70 loop_reread_partitions: partition scan of loop1 () failed (rc=-5) bit_cursor+0x12fc/0x1a60 drivers/video/fbdev/core/bitblit.c:386 fbcon_cursor+0x58a/0x7b0 drivers/video/fbdev/core/fbcon.c:1369 hide_cursor+0x9e/0x300 drivers/tty/vt/vt.c:895 redraw_screen+0x2ee/0x8e0 drivers/tty/vt/vt.c:988 fbcon_do_set_font+0x73a/0xa40 drivers/video/fbdev/core/fbcon.c:2583 fbcon_copy_font+0x12c/0x190 drivers/video/fbdev/core/fbcon.c:2598 con_font_copy drivers/tty/vt/vt.c:4548 [inline] con_font_op+0x69a/0x1250 drivers/tty/vt/vt.c:4563 vt_ioctl+0x1784/0x2530 drivers/tty/vt/vt_ioctl.c:965 tty_ioctl+0x7f3/0x1510 drivers/tty/tty_io.c:2669 loop5: p7 start 456975004 is beyond EOD, truncated loop5: p8 start 3885462950 is beyond EOD, truncated loop5: p9 start 4057810221 is beyond EOD, truncated loop5: p10 start 2125248079 is beyond EOD, vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 truncated loop5: p11 start 2575227907 is beyond EOD, truncated ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a6f9 Code: ad b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 0f 83 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fb05f273c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000045a6f9 RDX: 0000000020000400 RSI: 0000000000004b72 RDI: 0000000000000006 RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb05f2746d4 R13: 00000000004c383f R14: 00000000004d8d90 R15: 00000000ffffffff Allocated by task 1108: save_stack+0x45/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] kasan_kmalloc mm/kasan/kasan.c:553 [inline] kasan_kmalloc+0xce/0xf0 mm/kasan/kasan.c:531 __do_kmalloc mm/slab.c:3727 [inline] __kmalloc+0x15d/0x750 mm/slab.c:3736 kmalloc include/linux/slab.h:520 [inline] fbcon_set_font+0x32d/0x860 drivers/video/fbdev/core/fbcon.c:2641 con_font_set drivers/tty/vt/vt.c:4492 [inline] con_font_op+0xe18/0x1250 drivers/tty/vt/vt.c:4557 vt_ioctl+0xd2e/0x2530 drivers/tty/vt/vt_ioctl.c:913 tty_ioctl+0x7f3/0x1510 drivers/tty/tty_io.c:2669 vfs_ioctl fs/ioctl.c:46 [inline] file_ioctl fs/ioctl.c:501 [inline] do_vfs_ioctl+0xd5f/0x1380 fs/ioctl.c:688 ksys_ioctl+0xab/0xd0 fs/ioctl.c:705 __do_sys_ioctl fs/ioctl.c:712 [inline] __se_sys_ioctl fs/ioctl.c:710 [inline] __x64_sys_ioctl+0x73/0xb0 fs/ioctl.c:710 do_syscall_64+0xfd/0x620 arch/x86/entry/common.c:293 entry_SYSCALL_64_after_hwframe+0x49/0xbe Freed by task 7159: save_stack+0x45/0xd0 mm/kasan/kasan.c:448 set_track mm/kasan/kasan.c:460 [inline] __kasan_slab_free+0x102/0x150 mm/kasan/kasan.c:521 kasan_slab_free+0xe/0x10 mm/kasan/kasan.c:528 __cache_free mm/slab.c:3503 [inline] kfree+0xcf/0x220 mm/slab.c:3822 free_pipe_info+0x24b/0x300 fs/pipe.c:698 put_pipe_info+0xd0/0xf0 fs/pipe.c:570 pipe_release+0x1e6/0x280 fs/pipe.c:591 __fput+0x2dd/0x8b0 fs/file_table.c:278 ____fput+0x16/0x20 fs/file_table.c:309 task_work_run+0x145/0x1c0 kernel/task_work.c:113 tracehook_notify_resume include/linux/tracehook.h:193 [inline] exit_to_usermode_loop+0x273/0x2c0 arch/x86/entry/common.c:167 prepare_exit_to_usermode arch/x86/entry/common.c:198 [inline] syscall_return_slowpath arch/x86/entry/common.c:271 [inline] do_syscall_64+0x53d/0x620 arch/x86/entry/common.c:296 entry_SYSCALL_64_after_hwframe+0x49/0xbe The buggy address belongs to the object at ffff88809adbe540 which belongs to the cache kmalloc-512 of size 512 The buggy address is located 272 bytes inside of 512-byte region [ffff88809adbe540, ffff88809adbe740) The buggy address belongs to the page: page:ffffea00026b6f80 count:1 mapcount:0 mapping:ffff88812c31c940 index:0xffff88809adbecc0 flags: 0xfffe0000000100(slab) raw: 00fffe0000000100 ffffea0001fbab48 ffffea0001593c48 ffff88812c31c940 raw: ffff88809adbecc0 ffff88809adbe040 0000000100000003 0000000000000000 page dumped because: kasan: bad access detected Memory state around the buggy address: ffff88809adbe500: fc fc fc fc fc fc fc fc 00 00 00 00 00 00 00 00 ffff88809adbe580: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffff88809adbe600: 00 00 00 00 00 00 00 00 00 00 fc fc fc fc fc fc ^ ffff88809adbe680: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ffff88809adbe700: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc ==================================================================