Extracting prog: 3m5.030396911s
Minimizing prog: 13m37.686389982s
Simplifying prog options: 0s
Extracting C: 43.630086268s
Simplifying C: 6m7.269453643s
1 programs, timeouts [30s 1m40s 6m0s]
extracting reproducer from 1 programs
testing a last program of every proc
single: executing 1 programs separately with timeout 30s
testing program (duration=30s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f0000000140)={0x19})
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f00000000c0)={0x1}) (fail_nth: 4)
program did not crash
single: failed to extract reproducer
single: executing 1 programs separately with timeout 1m40s
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f0000000140)={0x19})
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f00000000c0)={0x1}) (fail_nth: 4)
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
single: successfully extracted reproducer
found reproducer with 3 syscalls
minimizing guilty program
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f0000000140)={0x19})
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f00000000c0)={0x1}) (fail_nth: 4)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f0000000140)={0x19})
ioctl$FBIOPUT_CON2FBMAP(0xffffffffffffffff, 0x4610, &(0x7f00000000c0)={0x1}) (fail_nth: 4)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f0000000140)={0x19})
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f00000000c0)={0x1})
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, 0x0, 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f0000000140)={0x19})
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f00000000c0)={0x1}) (fail_nth: 4)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f00000000c0)={0x1}) (fail_nth: 4)
program did not crash
testing program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
detailed listing:
executing program 0:
r0 = openat$fb1(0xffffffffffffff9c, &(0x7f0000000040), 0x0, 0x0)
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, &(0x7f0000000140)={0x19})
ioctl$FBIOPUT_CON2FBMAP(r0, 0x4610, 0x0) (fail_nth: 4)
program did not crash
extracting C reproducer
testing compiled C program (duration=1m40s, {Threaded:true Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
simplifying C reproducer
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:6 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox:none SandboxArg:0 Leak:false NetInjection:true NetDevices:true NetReset:true Cgroups:true BinfmtMisc:true CloseFDs:true KCSAN:false DevlinkPCI:false NicVF:false USB:true VhciInjection:true Wifi:true IEEE802154:true Sysctl:true Swap:true UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:true Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:true HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:true Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:true Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
testing compiled C program (duration=1m40s, {Threaded:false Repeat:true RepeatTimes:0 Procs:1 Slowdown:1 Sandbox: SandboxArg:0 Leak:false NetInjection:false NetDevices:false NetReset:false Cgroups:false BinfmtMisc:false CloseFDs:false KCSAN:false DevlinkPCI:false NicVF:false USB:false VhciInjection:false Wifi:false IEEE802154:false Sysctl:false Swap:false UseTmpDir:false HandleSegv:false Trace:false LegacyOptions:{Collide:false Fault:false FaultCall:0 FaultNth:0}}): openat$fb1-ioctl$FBIOPUT_CON2FBMAP-ioctl$FBIOPUT_CON2FBMAP
program crashed: KASAN: vmalloc-out-of-bounds Write in imageblit
reproducing took 23m33.616348571s
repro crashed as (corrupted=false):
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
==================================================================
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:
__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
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
==================================================================
final repro crashed as (corrupted=false):
R10: 0000000000000001 R11: 0000000000000246 R12: 0000000000000001
R13: 431bde82d7b634db R14: 0000000000000001 R15: 0000000000000001
==================================================================
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:
__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
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
==================================================================