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[syzbot] [fbdev?] KASAN: vmalloc-out-of-bounds Write in imageblit (4) | 0 (2) | 2024/09/05 01:06 |
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[syzbot] [fbdev?] KASAN: vmalloc-out-of-bounds Write in imageblit (4) | 0 (2) | 2024/09/05 01:06 |
Kernel | Title | Repro | Cause bisect | Fix bisect | Count | Last | Reported | Patched | Status |
---|---|---|---|---|---|---|---|---|---|
upstream | KASAN: vmalloc-out-of-bounds Write in imageblit fbdev | C | 104 | 1051d | 1345d | 20/27 | fixed on 2021/11/10 00:50 | ||
upstream | KASAN: vmalloc-out-of-bounds Write in imageblit (3) fbdev | 2 | 415d | 411d | 0/27 | auto-obsoleted due to no activity on 2023/10/23 10:50 | |||
upstream | KASAN: vmalloc-out-of-bounds Write in imageblit (2) fbdev | C | done | 701 | 740d | 1028d | 22/27 | fixed on 2023/02/24 13:50 |
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 </TASK> ================================================================== BUG: KASAN: vmalloc-out-of-bounds in fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline] BUG: KASAN: vmalloc-out-of-bounds in sys_imageblit+0x1ec6/0x2b00 drivers/video/fbdev/core/sysimgblt.c:326 Write of size 4 at addr ffffc90001c41000 by task syz-executor161/5103 CPU: 0 UID: 0 PID: 5103 Comm: syz-executor161 Not tainted 6.11.0-rc6-syzkaller-00048-gc7fb1692dc01 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 Call Trace: <TASK> __dump_stack lib/dump_stack.c:93 [inline] dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119 print_address_description mm/kasan/report.c:377 [inline] print_report+0x169/0x550 mm/kasan/report.c:488 kasan_report+0x143/0x180 mm/kasan/report.c:601 fast_imageblit drivers/video/fbdev/core/sysimgblt.c:257 [inline] sys_imageblit+0x1ec6/0x2b00 drivers/video/fbdev/core/sysimgblt.c:326 drm_fbdev_shmem_defio_imageblit+0x2e/0x100 drivers/gpu/drm/drm_fbdev_shmem.c:39 bit_putcs+0x18ba/0x1db0 fbcon_putcs+0x255/0x390 drivers/video/fbdev/core/fbcon.c:1288 do_update_region+0x396/0x450 drivers/tty/vt/vt.c:619 redraw_screen+0x902/0xe90 drivers/tty/vt/vt.c:971 con2fb_init_display drivers/video/fbdev/core/fbcon.c:794 [inline] set_con2fb_map+0xa6c/0x10a0 drivers/video/fbdev/core/fbcon.c:865 fbcon_set_con2fb_map_ioctl+0x207/0x320 drivers/video/fbdev/core/fbcon.c:3092 do_fb_ioctl+0x38f/0x7b0 drivers/video/fbdev/core/fb_chrdev.c:138 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:907 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:893 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7feb9b353729 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 a1 1a 00 00 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 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007ffde9b9f968 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007ffde9b9f980 RCX: 00007feb9b353729 RDX: 00000000200000c0 RSI: 0000000000004610 RDI: 0000000000000003 RBP: 0000000000000001 R08: 00007ffde9b9f707 R09: 00000000000000a0 R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001 R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001 </TASK> The buggy address belongs to the virtual mapping at [ffffc90001941000, ffffc90001c42000) created by: drm_gem_shmem_vmap+0x3ac/0x630 drivers/gpu/drm/drm_gem_shmem_helper.c:343 Memory state around the buggy address: ffffc90001c40f00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 ffffc90001c40f80: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 >ffffc90001c41000: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ^ ffffc90001c41080: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ffffc90001c41100: f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 f8 ==================================================================
Time | Kernel | Commit | Syzkaller | Config | Log | Report | Syz repro | C repro | VM info | Assets (help?) | Manager | Title |
---|---|---|---|---|---|---|---|---|---|---|---|---|
2024/09/05 01:05 | upstream | c7fb1692dc01 | dfbe2ed4 | .config | console log | report | syz / log | C | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Write in imageblit | |
2024/09/05 00:42 | upstream | c7fb1692dc01 | dfbe2ed4 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Write in imageblit | |||
2024/08/17 05:01 | upstream | 670c12ce09a8 | e1c76ab2 | .config | console log | report | [disk image (non-bootable)] [vmlinux] [kernel image] | ci-snapshot-upstream-root | KASAN: vmalloc-out-of-bounds Write in imageblit |