R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdd876656d4 R13: 00000000004c1915 R14: 00000000004d55d8 R15: 0000000000000004 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: 11067 Comm: syz-executor.5 Not tainted 5.4.0-rc7-next-20191113 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:__io_commit_cqring fs/io_uring.c:496 [inline] RIP: 0010:io_commit_cqring+0x1e1/0xdb0 fs/io_uring.c:592 Code: 03 0f 8e df 09 00 00 48 8b 45 d0 4c 8d a3 c0 00 00 00 4c 89 e2 48 c1 ea 03 44 8b b8 c0 01 00 00 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 61 RSP: 0018:ffff88805c15fc08 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900109be000 RDX: 0000000000000018 RSI: ffffffff81d168d5 RDI: ffff8880883c2900 RBP: ffff88805c15fc70 R08: 0000000000000004 R09: ffffed100b82bf7d R10: ffffed100b82bf7c R11: 0000000000000003 R12: 00000000000000c0 R13: ffff8880883c29c0 R14: 1ffff11011078510 R15: 0000000000000000 FS: 00007fdd87665700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000007161b4 CR3: 000000008aa62000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_cqring_overflow_flush+0x6b9/0xa90 fs/io_uring.c:673 io_ring_ctx_wait_and_kill+0x24f/0x7c0 fs/io_uring.c:4260 io_uring_create fs/io_uring.c:4600 [inline] io_uring_setup+0x1256/0x1cc0 fs/io_uring.c:4626 __do_sys_io_uring_setup fs/io_uring.c:4639 [inline] __se_sys_io_uring_setup fs/io_uring.c:4636 [inline] __x64_sys_io_uring_setup+0x54/0x80 fs/io_uring.c:4636 do_syscall_64+0xfa/0x760 arch/x86/entry/common.c:290 entry_SYSCALL_64_after_hwframe+0x49/0xbe RIP: 0033:0x45a219 Code: ad b6 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 7b b6 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007fdd87664c78 EFLAGS: 00000246 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 00007fdd87664c90 RCX: 000000000045a219 RDX: 0000000000000000 RSI: 0000000020000140 RDI: 0000000000000d0d RBP: 000000000075bf20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fdd876656d4 R13: 00000000004c1915 R14: 00000000004d55d8 R15: 0000000000000004 Modules linked in: ---[ end trace 0d1d7d6a5b5c470f ]--- RIP: 0010:__read_once_size include/linux/compiler.h:199 [inline] RIP: 0010:__io_commit_cqring fs/io_uring.c:496 [inline] RIP: 0010:io_commit_cqring+0x1e1/0xdb0 fs/io_uring.c:592 Code: 03 0f 8e df 09 00 00 48 8b 45 d0 4c 8d a3 c0 00 00 00 4c 89 e2 48 c1 ea 03 44 8b b8 c0 01 00 00 48 b8 00 00 00 00 00 fc ff df <0f> b6 14 02 4c 89 e0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 61 RSP: 0018:ffff88805c15fc08 EFLAGS: 00010006 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffc900109be000 RDX: 0000000000000018 RSI: ffffffff81d168d5 RDI: ffff8880883c2900 RBP: ffff88805c15fc70 R08: 0000000000000004 R09: ffffed100b82bf7d R10: ffffed100b82bf7c R11: 0000000000000003 R12: 00000000000000c0 R13: ffff8880883c29c0 R14: 1ffff11011078510 R15: 0000000000000000 FS: 00007fdd87665700(0000) GS:ffff8880ae800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000007161b4 CR3: 000000008aa62000 CR4: 00000000001406f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400