general protection fault, probably for non-canonical address 0xdffffc0000000022: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x0000000000000110-0x0000000000000117] CPU: 2 PID: 10840 Comm: syz-executor.2 Not tainted 5.11.0-rc3-syzkaller #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS rel-1.12.0-59-gc9ba5276e321-prebuilt.qemu.org 04/01/2014 RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline] RIP: 0010:io_disable_sqo_submit+0xdb/0x130 fs/io_uring.c:8891 Code: fa 48 c1 ea 03 80 3c 02 00 75 62 48 8b 9b c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 14 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1d 83 RSP: 0018:ffffc90000b57d58 EFLAGS: 00010007 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff815976e0 RDX: 0000000000000022 RSI: 0000000000000004 RDI: 0000000000000114 RBP: ffff88802a265480 R08: 0000000000000001 R09: 0000000000000003 R10: fffff5200016af9d R11: 0000000000000001 R12: fffffffffffffff4 R13: 0000000000000000 R14: ffff88802a265054 R15: ffff88802a265000 FS: 0000000000000000(0000) GS:ffff88802cc00000(0063) knlGS:00000000f55f4b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f55f3600 CR3: 000000007a3b1000 CR4: 0000000000350ee0 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+0x12b1/0x38e0 fs/io_uring.c:9739 do_syscall_32_irqs_on arch/x86/entry/common.c:78 [inline] __do_fast_syscall_32+0x56/0x80 arch/x86/entry/common.c:137 do_fast_syscall_32+0x2f/0x70 arch/x86/entry/common.c:160 entry_SYSENTER_compat_after_hwframe+0x4d/0x5c RIP: 0023:0xf7ffa549 Code: 03 74 c0 01 10 05 03 74 b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 eb 0d 90 90 90 90 90 90 90 90 90 90 90 90 RSP: 002b:00000000f55f406c EFLAGS: 00000286 ORIG_RAX: 00000000000001a9 RAX: ffffffffffffffda RBX: 0000000000004d80 RCX: 0000000020000340 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020002000 RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: ---[ end trace 02144df9cb676adc ]--- RIP: 0010:io_ring_set_wakeup_flag fs/io_uring.c:6929 [inline] RIP: 0010:io_disable_sqo_submit+0xdb/0x130 fs/io_uring.c:8891 Code: fa 48 c1 ea 03 80 3c 02 00 75 62 48 8b 9b c0 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 14 01 00 00 48 89 fa 48 c1 ea 03 <0f> b6 14 02 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 1d 83 RSP: 0018:ffffc90000b57d58 EFLAGS: 00010007 RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff815976e0 RDX: 0000000000000022 RSI: 0000000000000004 RDI: 0000000000000114 RBP: ffff88802a265480 R08: 0000000000000001 R09: 0000000000000003 R10: fffff5200016af9d R11: 0000000000000001 R12: fffffffffffffff4 R13: 0000000000000000 R14: ffff88802a265054 R15: ffff88802a265000 FS: 0000000000000000(0000) GS:ffff88802cc00000(0063) knlGS:00000000f55f4b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 00000000f55f3600 CR3: 000000007a3b1000 CR4: 0000000000350ee0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400