syzbot has found a reproducer for the following issue on: HEAD commit: 9f29bd8b Merge tag 'fs_for_v5.11-rc5' of git://git.kernel... git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=169f4e9f500000 kernel config: https://syzkaller.appspot.com/x/.config?x=39701af622f054a9 dashboard link: https://syzkaller.appspot.com/bug?extid=2f5d1785dc624932da78 compiler: gcc (GCC) 10.1.0-syz 20200507 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=1156bd20d00000 C reproducer: https://syzkaller.appspot.com/x/repro.c?x=15ce819f500000 The issue was bisected to: commit dcd479e10a0510522a5d88b29b8f79ea3467d501 Author: Johannes Berg <johannes.berg@xxxxxxxxx> Date: Fri Oct 9 12:17:11 2020 +0000 mac80211: always wind down STA state bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=13b8b83b500000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1078b83b500000 console output: https://syzkaller.appspot.com/x/log.txt?x=17b8b83b500000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+2f5d1785dc624932da78@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: dcd479e10a05 ("mac80211: always wind down STA state") ------------[ cut here ]------------ WARNING: CPU: 0 PID: 8572 at fs/io_uring.c:8917 io_disable_sqo_submit+0x13d/0x180 fs/io_uring.c:8917 Modules linked in: CPU: 1 PID: 8572 Comm: syz-executor518 Not tainted 5.11.0-rc4-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 RIP: 0010:io_disable_sqo_submit+0x13d/0x180 fs/io_uring.c:8917 Code: e0 07 83 c0 03 38 d0 7c 04 84 d2 75 2e 83 8b 14 01 00 00 01 4c 89 e7 e8 d1 6d 25 07 5b 5d 41 5c e9 48 22 9b ff e8 43 22 9b ff <0f> 0b e9 00 ff ff ff e8 87 a1 dd ff e9 37 ff ff ff e8 4d a1 dd ff RSP: 0018:ffffc90001c17df0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffff88801c409000 RCX: 0000000000000000 RDX: ffff8880287e8040 RSI: ffffffff81d7aa8d RDI: ffff88801c4090d0 RBP: ffff8880198a1780 R08: 0000000000000000 R09: 0000000012c8a801 R10: ffffffff81d7ad45 R11: 0000000000000001 R12: ffff88801c409000 R13: ffff888012c8a801 R14: ffff88801c409040 R15: ffff88801c4090d0 FS: 00007f60e950b700(0000) GS:ffff8880b9f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f60e950adb8 CR3: 0000000015b41000 CR4: 00000000001506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: io_uring_flush+0x28b/0x3a0 fs/io_uring.c:9134 filp_close+0xb4/0x170 fs/open.c:1280 do_dup2+0x294/0x520 fs/file.c:1024 ksys_dup3+0x22f/0x360 fs/file.c:1136 __do_sys_dup2 fs/file.c:1162 [inline] __se_sys_dup2 fs/file.c:1150 [inline] __x64_sys_dup2+0x71/0x3a0 fs/file.c:1150 do_syscall_64+0x2d/0x70 arch/x86/entry/common.c:46 entry_SYSCALL_64_after_hwframe+0x44/0xa9 RIP: 0033:0x447019 Code: e8 0c e8 ff ff 48 83 c4 18 c3 0f 1f 80 00 00 00 00 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 06 fc ff c3 66 2e 0f 1f 84 00 00 00 00 RSP: 002b:00007f60e950ace8 EFLAGS: 00000246 ORIG_RAX: 0000000000000021 RAX: ffffffffffffffda RBX: 00000000006dbc38 RCX: 0000000000447019 RDX: 0000000000447019 RSI: 0000000000000003 RDI: 0000000000000005 RBP: 00000000006dbc30 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00000000006dbc3c R13: 00007ffc5b18d21f R14: 00007f60e950b9c0 R15: 00000000006dbc30
