Hello, syzbot found the following issue on: HEAD commit: 3d5895cd3517 Merge tag 's390-5.14-3' of git://git.kernel.o.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=107699a6300000 kernel config: https://syzkaller.appspot.com/x/.config?x=7273c75708b55890 dashboard link: https://syzkaller.appspot.com/bug?extid=78dd535cdc52a06948f7 compiler: gcc (Debian 10.2.1-6) 10.2.1 20210110, GNU ld (GNU Binutils for Debian) 2.35.1 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+78dd535cdc52a06948f7@xxxxxxxxxxxxxxxxxxxxxxxxx general protection fault, probably for non-canonical address 0xdffffc00000000df: 0000 [#1] PREEMPT SMP KASAN KASAN: null-ptr-deref in range [0x00000000000006f8-0x00000000000006ff] CPU: 0 PID: 19531 Comm: kworker/u4:5 Not tainted 5.14.0-rc2-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Workqueue: netns cleanup_net RIP: 0010:read_pnet include/net/net_namespace.h:325 [inline] RIP: 0010:wiphy_net include/net/cfg80211.h:5107 [inline] RIP: 0010:hwsim_exit_net+0x160/0xca0 drivers/net/wireless/mac80211_hwsim.c:4201 Code: 8b 73 18 49 8d 7e 40 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 2a 0a 00 00 4d 8b 76 40 49 8d be f8 06 00 00 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 04 0a 00 00 48 8b 44 24 08 49 3b 86 f8 06 00 00 RSP: 0018:ffffc9000ad5fb18 EFLAGS: 00010202 RAX: 00000000000000df RBX: ffff888000173260 RCX: 0000000000000000 RDX: ffff88806c08d4c0 RSI: ffffffff8532af70 RDI: 00000000000006f8 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff520015abf55 R11: 0000000000086088 R12: ffff888151b83260 R13: ffff888000173260 R14: 0000000000000000 R15: fffffbfff18ef7dc FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000090d52c5 CR3: 000000006769c000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: ops_exit_list+0xb0/0x160 net/core/net_namespace.c:175 cleanup_net+0x4ea/0xb10 net/core/net_namespace.c:595 process_one_work+0x98d/0x1630 kernel/workqueue.c:2276 worker_thread+0x658/0x11f0 kernel/workqueue.c:2422 kthread+0x3e5/0x4d0 kernel/kthread.c:319 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295 Modules linked in: ---[ end trace a4f6519c3ad068a3 ]--- RIP: 0010:read_pnet include/net/net_namespace.h:325 [inline] RIP: 0010:wiphy_net include/net/cfg80211.h:5107 [inline] RIP: 0010:hwsim_exit_net+0x160/0xca0 drivers/net/wireless/mac80211_hwsim.c:4201 Code: 8b 73 18 49 8d 7e 40 48 89 f8 48 c1 e8 03 80 3c 28 00 0f 85 2a 0a 00 00 4d 8b 76 40 49 8d be f8 06 00 00 48 89 f8 48 c1 e8 03 <80> 3c 28 00 0f 85 04 0a 00 00 48 8b 44 24 08 49 3b 86 f8 06 00 00 RSP: 0018:ffffc9000ad5fb18 EFLAGS: 00010202 RAX: 00000000000000df RBX: ffff888000173260 RCX: 0000000000000000 RDX: ffff88806c08d4c0 RSI: ffffffff8532af70 RDI: 00000000000006f8 RBP: dffffc0000000000 R08: 0000000000000001 R09: 0000000000000003 R10: fffff520015abf55 R11: 0000000000086088 R12: ffff888151b83260 R13: ffff888000173260 R14: 0000000000000000 R15: fffffbfff18ef7dc FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00000000090d52c5 CR3: 000000006769c000 CR4: 00000000001526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- This report is generated by a bot. It may contain errors. See https://goo.gl/tpsmEJ for more information about syzbot. syzbot engineers can be reached at syzkaller@xxxxxxxxxxxxxxxx. syzbot will keep track of this issue. See: https://goo.gl/tpsmEJ#status for how to communicate with syzbot.
