RBP: 00007f546f7f6ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffe000 R13: 0000000020ffd000 R14: 0000000000000000 R15: 0000000000000000 BUG: kernel NULL pointer dereference, address: 0000000000000114 #PF: supervisor write access in kernel mode #PF: error_code(0x0002) - not-present page PGD 11eda9067 P4D 11eda9067 PUD 11ec86067 PMD 0 Oops: 0002 [#1] PREEMPT SMP CPU: 1 PID: 10191 Comm: syz-executor.3 Not tainted 5.11.0-rc1-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline] RIP: 0010:io_disable_sqo_submit+0x4d/0x60 fs/io_uring.c:8891 Code: e8 08 26 1e 02 48 89 ef 80 4b 44 40 48 8d ab 80 04 00 00 e8 95 0f 1e 02 48 89 ef e8 4d 60 1e 02 48 8b 83 c0 00 00 00 48 89 ef <83> 88 14 01 00 00 01 5b 5d e9 75 62 1e 02 0f 0b eb b8 90 41 55 65 RSP: 0018:ffffc90002b6be50 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff88811ef61000 RCX: ffffffff86a6f560 RDX: 0000000000000001 RSI: ffffffff846aca14 RDI: ffff88811ef61480 RBP: ffff88811ef61480 R08: ffffffff865594e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000020000300 R14: fffffffffffffff4 R15: 0000000000002140 FS: 00007f546f7f7700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000114 CR3: 000000011ee96000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_uring_create fs/io_uring.c:9711 [inline] io_uring_setup+0x861/0x1300 fs/io_uring.c:9739 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x45e219 Code: 0d 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 db b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f546f7f6be8 EFLAGS: 00000206 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000020000300 RCX: 000000000045e219 RDX: 0000000020ffe000 RSI: 0000000020000300 RDI: 00000000000000ff RBP: 00007f546f7f6ca0 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000206 R12: 0000000020ffe000 R13: 0000000020ffd000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: 0000000000000114 ---[ end trace d633430b8a71084b ]--- RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline] RIP: 0010:io_disable_sqo_submit+0x4d/0x60 fs/io_uring.c:8891 Code: e8 08 26 1e 02 48 89 ef 80 4b 44 40 48 8d ab 80 04 00 00 e8 95 0f 1e 02 48 89 ef e8 4d 60 1e 02 48 8b 83 c0 00 00 00 48 89 ef <83> 88 14 01 00 00 01 5b 5d e9 75 62 1e 02 0f 0b eb b8 90 41 55 65 RSP: 0018:ffffc90002b6be50 EFLAGS: 00010046 RAX: 0000000000000000 RBX: ffff88811ef61000 RCX: ffffffff86a6f560 RDX: 0000000000000001 RSI: ffffffff846aca14 RDI: ffff88811ef61480 RBP: ffff88811ef61480 R08: ffffffff865594e0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000001 R12: 0000000000000000 R13: 0000000020000300 R14: fffffffffffffff4 R15: 0000000000002140 FS: 00007f546f7f7700(0000) GS:ffff88813bd00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000000000114 CR3: 000000011ee96000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400