RIP: 0033:0x45cba9
Code: Bad RIP value.
RSP: 002b:00007f529df24c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e7b40 RCX: 000000000045cba9
RDX: 00000000200001c0 RSI: 00000000c0184900 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000379 R14: 00000000004c6236 R15: 00007f529df256d4
general protection fault, probably for non-canonical address 0xdffffc0000000017: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x00000000000000b8-0x00000000000000bf]
CPU: 0 PID: 8395 Comm: syz-executor.2 Not tainted 5.8.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:dma_buf_release+0x51/0x3f0 drivers/dma-buf/dma-buf.c:63
Code: 03 80 3c 02 00 0f 85 30 03 00 00 48 8b ad e8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd b8 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e3 02 00 00 8b 9d b8 00 00 00
RSP: 0018:ffffc900071d7b30 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff847bcc70 RCX: ffffc9000d1c2000
RDX: 0000000000000017 RSI: ffffffff847bcc80 RDI: 00000000000000b8
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88802752540b
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808930c6c0
R13: ffff88808930c648 R14: ffff88808930c690 R15: 0000000000000000
FS:  00007f529df25700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000517800 CR3: 0000000091e35000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __dentry_kill+0x42b/0x640 fs/dcache.c:584
 dentry_kill fs/dcache.c:705 [inline]
 dput+0x725/0xbc0 fs/dcache.c:878
 path_put+0x2d/0x60 fs/namei.c:496
 alloc_file_pseudo+0x20d/0x250 fs/file_table.c:236
 dma_buf_getfile drivers/dma-buf/dma-buf.c:439 [inline]
 dma_buf_export+0x5d8/0xae0 drivers/dma-buf/dma-buf.c:555
 ion_alloc drivers/staging/android/ion/ion.c:386 [inline]
 ion_ioctl+0x560/0xd20 drivers/staging/android/ion/ion.c:495
 vfs_ioctl fs/ioctl.c:48 [inline]
 ksys_ioctl+0x11a/0x180 fs/ioctl.c:753
 __do_sys_ioctl fs/ioctl.c:762 [inline]
 __se_sys_ioctl fs/ioctl.c:760 [inline]
 __x64_sys_ioctl+0x6f/0xb0 fs/ioctl.c:760
 do_syscall_64+0x60/0xe0 arch/x86/entry/common.c:384
 entry_SYSCALL_64_after_hwframe+0x44/0xa9
RIP: 0033:0x45cba9
Code: Bad RIP value.
RSP: 002b:00007f529df24c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00000000004e7b40 RCX: 000000000045cba9
RDX: 00000000200001c0 RSI: 00000000c0184900 RDI: 0000000000000004
RBP: 000000000078bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000005
R13: 0000000000000379 R14: 00000000004c6236 R15: 00007f529df256d4
Modules linked in:
---[ end trace 43187c4dfdef5bdc ]---
RIP: 0010:dma_buf_release+0x51/0x3f0 drivers/dma-buf/dma-buf.c:63
Code: 03 80 3c 02 00 0f 85 30 03 00 00 48 8b ad e8 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bd b8 00 00 00 48 89 fa 48 c1 ea 03 <0f> b6 04 02 84 c0 74 08 3c 03 0f 8e e3 02 00 00 8b 9d b8 00 00 00
RSP: 0018:ffffc900071d7b30 EFLAGS: 00010206
RAX: dffffc0000000000 RBX: ffffffff847bcc70 RCX: ffffc9000d1c2000
RDX: 0000000000000017 RSI: ffffffff847bcc80 RDI: 00000000000000b8
RBP: 0000000000000000 R08: 0000000000000001 R09: ffff88802752540b
R10: 0000000000000000 R11: 0000000000000000 R12: ffff88808930c6c0
R13: ffff88808930c648 R14: ffff88808930c690 R15: 0000000000000000
FS:  00007f529df25700(0000) GS:ffff8880ae600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000517800 CR3: 0000000091e35000 CR4: 00000000001426f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400