bisecting fixing commit since 08c27f3322fec11950b8f1384aa0f3b11d028528
building syzkaller on 6a81331a1d4c744da9204d02ec88d558f7eea9c9
testing commit 08c27f3322fec11950b8f1384aa0f3b11d028528 with gcc (GCC) 10.2.1 20210217
kernel signature: b508f873828a37d6033f7a40a2443ad0b478b6a6c07a3fdbbe152819662c0cf1
all runs: crashed: WARNING in ieee802154_del_device
testing current HEAD 8621436671f3a4bba5db57482e1ee604708bf1eb
testing commit 8621436671f3a4bba5db57482e1ee604708bf1eb with gcc (GCC) 10.2.1 20210217
kernel signature: fde3f1a4975f8e9b6a61212c570ff88c236fabc21d1e9f355c45a8f8b99c67bc
run #0: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #1: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #2: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #3: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #4: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #5: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #6: crashed: WARNING in __nf_unregister_net_hook
run #7: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #8: basic kernel testing failed: WARNING in __nf_unregister_net_hook
run #9: crashed: WARNING in __nf_unregister_net_hook
revisions tested: 2, total time: 21m44.236612417s (build: 14m29.708846361s, test: 6m29.362608004s)
the crash still happens on HEAD
commit msg: smc: disallow TCP_ULP in smc_setsockopt()
crash: WARNING in __nf_unregister_net_hook
------------[ cut here ]------------
hook not found, pf 3 num 0
WARNING: CPU: 1 PID: 677 at net/netfilter/core.c:480 __nf_unregister_net_hook+0x17a/0x560 net/netfilter/core.c:480
Modules linked in:
CPU: 1 PID: 677 Comm: kworker/u4:6 Not tainted 5.12.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: netns cleanup_net
RIP: 0010:__nf_unregister_net_hook+0x17a/0x560 net/netfilter/core.c:480
Code: 89 f0 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 a7 03 00 00 8b 53 1c 44 89 e6 48 c7 c7 40 71 9f 89 4c 89 04 24 e8 78 99 62 01 <0f> 0b 4c 8b 04 24 e9 ba 00 00 00 48 89 ea 48 c1 e2 04 49 8d 7c 10
RSP: 0018:ffffc9000326fbf0 EFLAGS: 00010282
RAX: 0000000000000000 RBX: ffff88814799dc00 RCX: 0000000000000000
RDX: 0000000000000001 RSI: 0000000000000004 RDI: fffff5200064df70
RBP: 0000000000000001 R08: 0000000000000001 R09: ffff8880ba11fa5b
R10: ffffed1017423f4b R11: 0000000000000001 R12: 0000000000000003
R13: ffff888022f78000 R14: ffff88814799dc1c R15: ffff888022f78f20
FS:  0000000000000000(0000) GS:ffff8880ba100000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f3512af3710 CR3: 000000000a68e000 CR4: 00000000001506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 nf_unregister_net_hook net/netfilter/core.c:502 [inline]
 nf_unregister_net_hooks+0xb1/0xf0 net/netfilter/core.c:576
 ops_pre_exit_list net/core/net_namespace.c:165 [inline]
 cleanup_net+0x3a4/0x990 net/core/net_namespace.c:583
 process_one_work+0x84c/0x13b0 kernel/workqueue.c:2275
 worker_thread+0x598/0xf80 kernel/workqueue.c:2421
 kthread+0x36f/0x450 kernel/kthread.c:313
 ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:294