general protection fault, probably for non-canonical address 0xdffffc00000000b3: 0000 [#1] PREEMPT SMP KASAN
KASAN: null-ptr-deref in range [0x0000000000000598-0x000000000000059f]
CPU: 0 PID: 8445 Comm: syz-executor179 Not tainted 5.14.0-rc2-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:read_pnet include/net/net_namespace.h:325 [inline]
RIP: 0010:dev_net include/linux/netdevice.h:2430 [inline]
RIP: 0010:add_del_if+0x57/0x140 net/bridge/br_ioctl.c:85
Code: 03 80 3c 02 00 0f 85 fd 00 00 00 48 8b 9d 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 98 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ca 00 00 00 4c 8b ab 98 05 00 00 48 b8 00 00 00
RSP: 0018:ffffc900017ffa80 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000000b3 RSI: ffffffff87f667b6 RDI: 0000000000000598
RBP: ffff88801f79cc00 R08: 00000000000089a2 R09: ffffffff87f67f36
R10: ffffffff87f68031 R11: 00000000000089a2 R12: 0000000000000001
R13: ffffc900017ffd60 R14: 0000000000000000 R15: dffffc0000000000
FS:  00000000015e4300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000021223000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 br_ioctl_stub+0x1c6/0x7f0 net/bridge/br_ioctl.c:397
 br_ioctl_call+0x5e/0xa0 net/socket.c:1091
 dev_ifsioc+0xc1f/0xf60 net/core/dev_ioctl.c:382
 dev_ioctl+0x1b9/0xee0 net/core/dev_ioctl.c:580
 sock_do_ioctl+0x18b/0x210 net/socket.c:1128
 sock_ioctl+0x2f1/0x640 net/socket.c:1231
 vfs_ioctl fs/ioctl.c:51 [inline]
 __do_sys_ioctl fs/ioctl.c:1069 [inline]
 __se_sys_ioctl fs/ioctl.c:1055 [inline]
 __x64_sys_ioctl+0x193/0x200 fs/ioctl.c:1055
 do_syscall_x64 arch/x86/entry/common.c:50 [inline]
 do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
 entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x43ee49
Code: 28 c3 e8 2a 14 00 00 66 2e 0f 1f 84 00 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 73 01 c3 48 c7 c1 c0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007ffd035737d8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 0000000000400488 RCX: 000000000043ee49
RDX: 0000000020000180 RSI: 00000000000089a2 RDI: 0000000000000003
RBP: 0000000000402e30 R08: 0000000000000000 R09: 0000000000400488
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000402ec0
R13: 0000000000000000 R14: 00000000004ac018 R15: 0000000000400488
Modules linked in:
---[ end trace c8f1d55cede3e964 ]---
RIP: 0010:read_pnet include/net/net_namespace.h:325 [inline]
RIP: 0010:dev_net include/linux/netdevice.h:2430 [inline]
RIP: 0010:add_del_if+0x57/0x140 net/bridge/br_ioctl.c:85
Code: 03 80 3c 02 00 0f 85 fd 00 00 00 48 8b 9d 88 00 00 00 48 b8 00 00 00 00 00 fc ff df 48 8d bb 98 05 00 00 48 89 fa 48 c1 ea 03 <80> 3c 02 00 0f 85 ca 00 00 00 4c 8b ab 98 05 00 00 48 b8 00 00 00
RSP: 0018:ffffc900017ffa80 EFLAGS: 00010202
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: 0000000000000000
RDX: 00000000000000b3 RSI: ffffffff87f667b6 RDI: 0000000000000598
RBP: ffff88801f79cc00 R08: 00000000000089a2 R09: ffffffff87f67f36
R10: ffffffff87f68031 R11: 00000000000089a2 R12: 0000000000000001
R13: ffffc900017ffd60 R14: 0000000000000000 R15: dffffc0000000000
FS:  00000000015e4300(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000020000180 CR3: 0000000021223000 CR4: 00000000001506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400