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kernel BUG at drivers/dma-buf/dma-buf.c:68!
invalid opcode: 0000 [#1] PREEMPT SMP KASAN
Modules linked in:
CPU: 1 PID: 17826 Comm: syz-executor.4 Not tainted 4.14.194-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
task: ffff88804cf0c5c0 task.stack: ffff888055ee0000
RIP: 0010:dma_buf_release+0x313/0x5c0 drivers/dma-buf/dma-buf.c:68
RSP: 0018:ffff888055ee7b38 EFLAGS: 00010216
RAX: 0000000000040000 RBX: ffff8880a138ea80 RCX: ffffc90006e7a000
RDX: 000000000000061f RSI: ffffffff83afe533 RDI: ffff88809b60cef8
RBP: ffff88809b60cd80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000000 R12: ffff8880a138eaa8
R13: ffff8880a138eafc R14: ffffffff83afe220 R15: ffff8880a138ea90
FS:  00007fe43ba6a700(0000) GS:ffff8880aeb00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b32d21000 CR3: 00000000a521c000 CR4: 00000000001406e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 __fput+0x25f/0x7a0 fs/file_table.c:210
 task_work_run+0x11f/0x190 kernel/task_work.c:113
 get_signal+0x18a3/0x1ca0 kernel/signal.c:2234
 do_signal+0x7c/0x1550 arch/x86/kernel/signal.c:814
 exit_to_usermode_loop+0x160/0x200 arch/x86/entry/common.c:160
 prepare_exit_to_usermode arch/x86/entry/common.c:199 [inline]
 syscall_return_slowpath arch/x86/entry/common.c:270 [inline]
 do_syscall_64+0x4a3/0x640 arch/x86/entry/common.c:297
 entry_SYSCALL_64_after_hwframe+0x46/0xbb
RIP: 0033:0x45d579
RSP: 002b:00007fe43ba69c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: fffffffffffffe00 RBX: 000000000000b000 RCX: 000000000045d579
RDX: 0000000020000000 RSI: 0000000040086200 RDI: 0000000000000005
RBP: 000000000118cf80 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000118cf4c
R13: 00007ffdfc9dff5f R14: 00007fe43ba6a9c0 R15: 000000000118cf4c
Code: 31 e4 e8 01 6b a3 fd 48 89 ef e8 49 52 d5 fd e8 f4 b1 ab fd 44 89 e0 48 83 c4 10 5b 5d 41 5c 41 5d 41 5e 41 5f c3 e8 dd b1 ab fd <0f> 0b e8 d6 b1 ab fd e8 b1 5d 9c fd 48 8d bd 38 02 00 00 48 b8 
RIP: dma_buf_release+0x313/0x5c0 drivers/dma-buf/dma-buf.c:68 RSP: ffff888055ee7b38
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