general protection fault in vgem_fence_attach_ioctl
6 views
Skip to first unread message
syzbot
Aug 30, 2020, 4:35:23 PM8/30/20
to syzkaller...@googlegroups.com
Hello,
syzbot found the following issue on:
HEAD commit: f6d5cb9e Linux 4.19.142
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=163e3d8e900000
kernel config: https://syzkaller.appspot.com/x/.config?x=30067df04d3254aa
dashboard link: https://syzkaller.appspot.com/bug?extid=072b2b7eb682bc673fa8
compiler: gcc (GCC) 10.1.0-syz 20200507
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+072b2b...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13287 Comm: syz-executor.2 Not tainted 4.19.142-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff88804c07faf0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888091708300 RCX: 1ffff1100980ff4b
RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0
RBP: ffff888094162d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888097418c80
R13: ffff888091708304 R14: 0000000000000000 R15: ffff888097418d18
FS: 00007f7b81ab5700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001590004 CR3: 000000003fa85000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
drm_ioctl_kernel+0x208/0x2a0 drivers/gpu/drm/drm_ioctl.c:757
drm_ioctl+0x507/0x9c0 drivers/gpu/drm/drm_ioctl.c:857
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d5b9
Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7b81ab4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000c4c0 RCX: 000000000045d5b9
RDX: 0000000020000140 RSI: 00000000c10c5541 RDI: 0000000000000005
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffdfdc37f9f R14: 00007f7b81ab59c0 R15: 000000000118cf4c
Modules linked in:
---[ end trace 9519bf0edcd482d7 ]---
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff88804c07faf0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888091708300 RCX: 1ffff1100980ff4b
RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0
gfs2: not a GFS2 filesystem
RBP: ffff888094162d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888097418c80
R13: ffff888091708304 R14: 0000000000000000 R15: ffff888097418d18
FS: 00007f7b81ab5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
gfs2: not a GFS2 filesystem
CR2: 00007f1d666bc020 CR3: 000000003fa85000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot found the following issue on:
HEAD commit: f6d5cb9e Linux 4.19.142
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=163e3d8e900000
kernel config: https://syzkaller.appspot.com/x/.config?x=30067df04d3254aa
dashboard link: https://syzkaller.appspot.com/bug?extid=072b2b7eb682bc673fa8
compiler: gcc (GCC) 10.1.0-syz 20200507
Unfortunately, I don't have any reproducer for this issue yet.
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+072b2b...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 1 PID: 13287 Comm: syz-executor.2 Not tainted 4.19.142-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff88804c07faf0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888091708300 RCX: 1ffff1100980ff4b
RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0
RBP: ffff888094162d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888097418c80
R13: ffff888091708304 R14: 0000000000000000 R15: ffff888097418d18
FS: 00007f7b81ab5700(0000) GS:ffff8880ae700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000001590004 CR3: 000000003fa85000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
drm_ioctl_kernel+0x208/0x2a0 drivers/gpu/drm/drm_ioctl.c:757
drm_ioctl+0x507/0x9c0 drivers/gpu/drm/drm_ioctl.c:857
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d5b9
Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7b81ab4c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 000000000000c4c0 RCX: 000000000045d5b9
RDX: 0000000020000140 RSI: 00000000c10c5541 RDI: 0000000000000005
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffdfdc37f9f R14: 00007f7b81ab59c0 R15: 000000000118cf4c
Modules linked in:
---[ end trace 9519bf0edcd482d7 ]---
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff88804c07faf0 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: ffff888091708300 RCX: 1ffff1100980ff4b
RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0
gfs2: not a GFS2 filesystem
RBP: ffff888094162d40 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff888097418c80
R13: ffff888091708304 R14: 0000000000000000 R15: ffff888097418d18
FS: 00007f7b81ab5700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
gfs2: not a GFS2 filesystem
CR2: 00007f1d666bc020 CR3: 000000003fa85000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
---
This report is generated by a bot. It may contain errors.
See https://goo.gl/tpsmEJ for more information about syzbot.
syzbot engineers can be reached at syzk...@googlegroups.com.
syzbot will keep track of this issue. See:
https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
syzbot
Aug 31, 2020, 7:49:15 AM8/31/20
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: f6d5cb9e Linux 4.19.142
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=119ff38e900000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+072b2b...@syzkaller.appspotmail.com
Bluetooth: hci0: command 0x041b tx timeout
Bluetooth: hci0: command 0x040f tx timeout
Bluetooth: hci0: command 0x0419 tx timeout
RAX: dffffc0000000000 RBX: ffff88809aeb5c80 RCX: 1ffff110104c6f4b
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809391d7c0
R13: ffff88809aeb5c84 R14: 0000000000000000 R15: ffff88809391d858
FS: 00007f7f6b422700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
Modules linked in:
---[ end trace fb805e7fe7e36620 ]---
RAX: dffffc0000000000 RBX: ffff88809aeb5c80 RCX: 1ffff110104c6f4b
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809391d7c0
R13: ffff88809aeb5c84 R14: 0000000000000000 R15: ffff88809391d858
FS: 00007f7f6b422700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
HEAD commit: f6d5cb9e Linux 4.19.142
git tree: linux-4.19.y
kernel config: https://syzkaller.appspot.com/x/.config?x=30067df04d3254aa
dashboard link: https://syzkaller.appspot.com/bug?extid=072b2b7eb682bc673fa8
compiler: gcc (GCC) 10.1.0-syz 20200507
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1044a271900000
dashboard link: https://syzkaller.appspot.com/bug?extid=072b2b7eb682bc673fa8
compiler: gcc (GCC) 10.1.0-syz 20200507
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+072b2b...@syzkaller.appspotmail.com
Bluetooth: hci0: command 0x040f tx timeout
Bluetooth: hci0: command 0x0419 tx timeout
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8960 Comm: syz-executor.0 Not tainted 4.19.142-syzkaller #0
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff888082637af0 EFLAGS: 00010202
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RAX: dffffc0000000000 RBX: ffff88809aeb5c80 RCX: 1ffff110104c6f4b
RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0
RBP: ffff88809aca7580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809391d7c0
R13: ffff88809aeb5c84 R14: 0000000000000000 R15: ffff88809391d858
FS: 00007f7f6b422700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7f6b400db8 CR3: 00000000883db000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
drm_ioctl_kernel+0x208/0x2a0 drivers/gpu/drm/drm_ioctl.c:757
drm_ioctl+0x507/0x9c0 drivers/gpu/drm/drm_ioctl.c:857
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d5b9
Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007f7f6b421c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
drm_ioctl_kernel+0x208/0x2a0 drivers/gpu/drm/drm_ioctl.c:757
drm_ioctl+0x507/0x9c0 drivers/gpu/drm/drm_ioctl.c:857
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x45d5b9
Code: 5d b4 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 2b b4 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RAX: ffffffffffffffda RBX: 000000000000c4c0 RCX: 000000000045d5b9
RDX: 0000000020000140 RSI: 00000000c10c5541 RDI: 0000000000000003
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffc59960daf R14: 00007f7f6b4229c0 R15: 000000000118cf4c
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
Modules linked in:
---[ end trace fb805e7fe7e36620 ]---
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff888082637af0 EFLAGS: 00010202
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RAX: dffffc0000000000 RBX: ffff88809aeb5c80 RCX: 1ffff110104c6f4b
RDX: 000000000000001c RSI: ffffffff815addbf RDI: 00000000000000e0
RBP: ffff88809aca7580 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88809391d7c0
R13: ffff88809aeb5c84 R14: 0000000000000000 R15: ffff88809391d858
FS: 00007f7f6b422700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f7f6b400db8 CR3: 00000000883db000 CR4: 00000000001406f0
syzbot
Jun 11, 2021, 12:50:20 PM6/11/21
to syzkaller...@googlegroups.com
syzbot has found a reproducer for the following issue on:
HEAD commit: 9a2dc0e6 Linux 4.19.194
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14561f67d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=4fa0751b4d49ae79
dashboard link: https://syzkaller.appspot.com/bug?extid=072b2b7eb682bc673fa8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=155d414fd00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=168ef3afd00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+072b2b...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
CPU: 0 PID: 8153 Comm: syz-executor925 Not tainted 4.19.194-syzkaller #0
RAX: dffffc0000000000 RBX: ffff88809ce32000 RCX: 1ffff11013968f4b
RDX: 000000000000001c RSI: ffffffff8153be2f RDI: 00000000000000e0
RBP: ffff8880ab9bd500 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4f73140
R13: ffff88809ce32004 R14: 0000000000000000 R15: ffff8880a4f731d8
FS: 00007f013649e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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:00007f013649e308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000449f49
RDX: 0000000020000140 RSI: 00000000c10c5541 RDI: 0000000000000004
RBP: 00000000004ca420 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca42c
R13: 000000000049a074 R14: 6972642f7665642f R15: 0000000000022000
Modules linked in:
---[ end trace dc17a1d7cfa2085f ]---
RAX: dffffc0000000000 RBX: ffff88809ce32000 RCX: 1ffff11013968f4b
RDX: 000000000000001c RSI: ffffffff8153be2f RDI: 00000000000000e0
RBP: ffff8880ab9bd500 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4f73140
R13: ffff88809ce32004 R14: 0000000000000000 R15: ffff8880a4f731d8
FS: 00007f013649e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
HEAD commit: 9a2dc0e6 Linux 4.19.194
git tree: linux-4.19.y
console output: https://syzkaller.appspot.com/x/log.txt?x=14561f67d00000
kernel config: https://syzkaller.appspot.com/x/.config?x=4fa0751b4d49ae79
dashboard link: https://syzkaller.appspot.com/bug?extid=072b2b7eb682bc673fa8
syz repro: https://syzkaller.appspot.com/x/repro.syz?x=155d414fd00000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=168ef3afd00000
IMPORTANT: if you fix the issue, please add the following tag to the commit:
Reported-by: syzbot+072b2b...@syzkaller.appspotmail.com
kasan: CONFIG_KASAN_INLINE enabled
kasan: GPF could be caused by NULL-ptr deref or user memory access
general protection fault: 0000 [#1] PREEMPT SMP KASAN
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff88809cb47af0 EFLAGS: 00010202
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RAX: dffffc0000000000 RBX: ffff88809ce32000 RCX: 1ffff11013968f4b
RDX: 000000000000001c RSI: ffffffff8153be2f RDI: 00000000000000e0
RBP: ffff8880ab9bd500 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4f73140
R13: ffff88809ce32004 R14: 0000000000000000 R15: ffff8880a4f731d8
FS: 00007f013649e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe205369c0 CR3: 00000000981b7000 CR4: 00000000001406f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
drm_ioctl_kernel+0x208/0x2a0 drivers/gpu/drm/drm_ioctl.c:757
drm_ioctl+0x507/0x9c0 drivers/gpu/drm/drm_ioctl.c:857
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x449f49
drm_ioctl_kernel+0x208/0x2a0 drivers/gpu/drm/drm_ioctl.c:757
drm_ioctl+0x507/0x9c0 drivers/gpu/drm/drm_ioctl.c:857
vfs_ioctl fs/ioctl.c:46 [inline]
file_ioctl fs/ioctl.c:501 [inline]
do_vfs_ioctl+0xcdb/0x12e0 fs/ioctl.c:688
ksys_ioctl+0x9b/0xc0 fs/ioctl.c:705
__do_sys_ioctl fs/ioctl.c:712 [inline]
__se_sys_ioctl fs/ioctl.c:710 [inline]
__x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:710
do_syscall_64+0xf9/0x620 arch/x86/entry/common.c:293
entry_SYSCALL_64_after_hwframe+0x49/0xbe
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 11 15 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:00007f013649e308 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004ca428 RCX: 0000000000449f49
RDX: 0000000020000140 RSI: 00000000c10c5541 RDI: 0000000000000004
RBP: 00000000004ca420 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00000000004ca42c
R13: 000000000049a074 R14: 6972642f7665642f R15: 0000000000022000
Modules linked in:
---[ end trace dc17a1d7cfa2085f ]---
RIP: 0010:vgem_fence_attach_ioctl+0x27d/0x640 drivers/gpu/drm/vgem/vgem_fence.c:184
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RSP: 0018:ffff88809cb47af0 EFLAGS: 00010202
Code: 03 80 3c 02 00 0f 85 9b 03 00 00 4c 8b b5 10 01 00 00 48 b8 00 00 00 00 00 fc ff df 49 8d be e0 00 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 7f 03 00 00 4c 89 ea 4d 8b b6 e0 00 00 00 48 b8
RAX: dffffc0000000000 RBX: ffff88809ce32000 RCX: 1ffff11013968f4b
RDX: 000000000000001c RSI: ffffffff8153be2f RDI: 00000000000000e0
RBP: ffff8880ab9bd500 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a4f73140
R13: ffff88809ce32004 R14: 0000000000000000 R15: ffff8880a4f731d8
FS: 00007f013649e700(0000) GS:ffff8880ba000000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffe205369c0 CR3: 00000000981b7000 CR4: 00000000001406f0
Reply all
Reply to author
Forward
0 new messages