memory leak in fbcon_set

Title	Replies (including bot)	Last reply
[PATCH] fbdev: fbcon: release buffer when fbcon_do_set_font() failed	2 (2)	2022/12/10 16:18
[PATCH] fbcon: Fix memleak when fbcon_set_font() fails	1 (1)	2022/12/05 08:49
[syzbot] memory leak in fbcon_set_font (2)	0 (1)	2022/12/05 04:34

Title

Replies (including bot)

Last reply

[PATCH] fbdev: fbcon: release buffer when fbcon_do_set_font() failed

2 (2)

2022/12/10 16:18

[PATCH] fbcon: Fix memleak when fbcon_set_font() fails

1 (1)

2022/12/05 08:49

[syzbot] memory leak in fbcon_set_font (2)

0 (1)

2022/12/05 04:34

Kernel	Title	Repro	Cause bisect	Fix bisect	Count	Last	Reported	Patched	Status
upstream	memory leak in fbcon_set_font	C			1	874d	874d	0/24	auto-obsoleted due to no activity on 2022/10/03 19:40
upstream	memory leak in fbcon_set_font (3) fbdev	C			1	16d	12d	0/24	upstream: reported C repro on 2023/05/25 11:17

Created	Duration	User	Patch	Repo	Result
2022/12/05 10:56	16m	penguin-kernel@i-love.sakura.ne.jp	patch	upstream	OK log

Created

Duration

User

Patch

Repo

Result

2022/12/05 10:56

16m

penguin-kernel@i-love.sakura.ne.jp

patch

upstream

OK log

BUG: memory leak unreferenced object 0xffff888111648000 (size 18448): comm "syz-executor148", pid 3653, jiffies 4294970435 (age 13.520s) hex dump (first 32 bytes): 85 44 7e c7 00 00 00 00 00 48 00 00 00 00 00 00 .D~......H...... 92 30 86 d2 8c 38 30 9e e7 a3 05 00 9f 09 33 bb .0...80.......3. backtrace: [<ffffffff814ee6d3>] __do_kmalloc_node mm/slab_common.c:943 [inline] [<ffffffff814ee6d3>] __kmalloc+0xb3/0x120 mm/slab_common.c:968 [<ffffffff8250c359>] kmalloc include/linux/slab.h:558 [inline] [<ffffffff8250c359>] fbcon_set_font+0x1a9/0x470 drivers/video/fbdev/core/fbcon.c:2508 [<ffffffff8262cd59>] con_font_set drivers/tty/vt/vt.c:4667 [inline] [<ffffffff8262cd59>] con_font_op+0x3a9/0x600 drivers/tty/vt/vt.c:4713 [<ffffffff82618e3d>] vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] [<ffffffff82618e3d>] vt_ioctl+0x14fd/0x1a80 drivers/tty/vt/vt_ioctl.c:752 [<ffffffff825fdaf5>] tty_ioctl+0x6d5/0xbe0 drivers/tty/tty_io.c:2771 [<ffffffff816200bc>] vfs_ioctl fs/ioctl.c:51 [inline] [<ffffffff816200bc>] __do_sys_ioctl fs/ioctl.c:870 [inline] [<ffffffff816200bc>] __se_sys_ioctl fs/ioctl.c:856 [inline] [<ffffffff816200bc>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:856 [<ffffffff8485c5e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff8485c5e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd BUG: memory leak unreferenced object 0xffff888110b18000 (size 18448): comm "syz-executor148", pid 3655, jiffies 4294971001 (age 7.860s) hex dump (first 32 bytes): 85 44 7e c7 00 00 00 00 00 48 00 00 00 00 00 00 .D~......H...... 92 30 86 d2 8c 38 30 9e e7 a3 05 00 9f 09 33 bb .0...80.......3. backtrace: [<ffffffff814ee6d3>] __do_kmalloc_node mm/slab_common.c:943 [inline] [<ffffffff814ee6d3>] __kmalloc+0xb3/0x120 mm/slab_common.c:968 [<ffffffff8250c359>] kmalloc include/linux/slab.h:558 [inline] [<ffffffff8250c359>] fbcon_set_font+0x1a9/0x470 drivers/video/fbdev/core/fbcon.c:2508 [<ffffffff8262cd59>] con_font_set drivers/tty/vt/vt.c:4667 [inline] [<ffffffff8262cd59>] con_font_op+0x3a9/0x600 drivers/tty/vt/vt.c:4713 [<ffffffff82618e3d>] vt_k_ioctl drivers/tty/vt/vt_ioctl.c:474 [inline] [<ffffffff82618e3d>] vt_ioctl+0x14fd/0x1a80 drivers/tty/vt/vt_ioctl.c:752 [<ffffffff825fdaf5>] tty_ioctl+0x6d5/0xbe0 drivers/tty/tty_io.c:2771 [<ffffffff816200bc>] vfs_ioctl fs/ioctl.c:51 [inline] [<ffffffff816200bc>] __do_sys_ioctl fs/ioctl.c:870 [inline] [<ffffffff816200bc>] __se_sys_ioctl fs/ioctl.c:856 [inline] [<ffffffff816200bc>] __x64_sys_ioctl+0xfc/0x140 fs/ioctl.c:856 [<ffffffff8485c5e5>] do_syscall_x64 arch/x86/entry/common.c:50 [inline] [<ffffffff8485c5e5>] do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80 [<ffffffff84a00087>] entry_SYSCALL_64_after_hwframe+0x63/0xcd write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory write to /proc/sys/kernel/hung_task_check_interval_secs failed: No such file or directory write to /proc/sys/kernel/softlockup_all_cpu_backtrace failed: No such file or directory