bisecting fixing commit since 625acffd7ae2c52898d249e6c5c39f348db0d8df
building syzkaller on 9d2ab5dfe7727dfea4b9b279f4edf731acb386ef
testing commit 625acffd7ae2c52898d249e6c5c39f348db0d8df
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: bca0a25d695a04303c22e16c45609273b4648804058f11d80b30ff866bc4fe95
run #0: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #1: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #2: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #3: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #4: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #5: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #6: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #7: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #8: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #9: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #10: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #11: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #12: crashed: WARNING: locking bug in do_ipv6_setsockopt
run #13: OK
run #14: OK
run #15: OK
run #16: OK
run #17: OK
run #18: OK
run #19: OK
testing current HEAD 438645193e59e91761ccb3fa55f6ce70b615ff93
testing commit 438645193e59e91761ccb3fa55f6ce70b615ff93
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 6da11168b964deb7adea8559f7f0c7a2ac982455d332fc27887d723cb735ede4
all runs: crashed: WARNING: locking bug in do_ipv6_setsockopt
revisions tested: 2, total time: 27m47.633834439s (build: 13m4.224944571s, test: 14m4.965352224s)
the crash still happens on HEAD
commit msg: Merge tag 'pinctrl-v5.16-3' of git://git.kernel.org/pub/scm/linux/kernel/git/linusw/linux-pinctrl
crash: WARNING: locking bug in do_ipv6_setsockopt
------------[ cut here ]------------
WARNING: CPU: 0 PID: 32138 at kernel/locking/lockdep.c:909 look_up_lock_class+0x6a/0xd0 kernel/locking/lockdep.c:909
Modules linked in:
CPU: 0 PID: 32138 Comm: syz-executor.3 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:look_up_lock_class+0x6a/0xd0 kernel/locking/lockdep.c:909
Code: 85 c0 75 0a eb 57 48 8b 00 48 85 c0 74 4f 48 39 70 40 75 f2 48 8b 4f 18 48 39 88 b0 00 00 00 74 0b 48 81 3f 60 c4 04 8e 74 02 <0f> 0b 5d c3 9c 5a 80 e6 02 74 c2 e8 66 5e 0d fb 85 c0 74 1f 8b 05
RSP: 0018:ffffc90003c077f0 EFLAGS: 00010006
RAX: ffffffff8ee8e960 RBX: ffffffff8f396900 RCX: ffffffff89d6d760
RDX: 0000000000000046 RSI: ffffffff8f70ea00 RDI: ffff8880780dd8a0
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: ffff8880780dd812 R12: ffff8880780dd8a0
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
FS:  00007f184e926700(0000) GS:ffff8880b9e00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f184e926718 CR3: 000000007df8b000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 register_lock_class+0xb7/0x10c0 kernel/locking/lockdep.c:1258
 __lock_acquire+0x105/0x5410 kernel/locking/lockdep.c:4906
 lock_acquire kernel/locking/lockdep.c:5637 [inline]
 lock_acquire+0x1ab/0x510 kernel/locking/lockdep.c:5602
 __raw_spin_lock_bh include/linux/spinlock_api_smp.h:126 [inline]
 _raw_spin_lock_bh+0x2f/0x40 kernel/locking/spinlock.c:178
 spin_lock_bh include/linux/spinlock.h:354 [inline]
 lock_sock_nested+0x50/0xd0 net/core/sock.c:3288
 lock_sock include/net/sock.h:1645 [inline]
 do_ipv6_setsockopt.constprop.0+0x251/0x3600 net/ipv6/ipv6_sockglue.c:420
 ipv6_setsockopt+0xbb/0x120 net/ipv6/ipv6_sockglue.c:1012
 __sys_setsockopt+0x1fd/0x4e0 net/socket.c:2176
 __do_sys_setsockopt net/socket.c:2187 [inline]
 __se_sys_setsockopt net/socket.c:2184 [inline]
 __x64_sys_setsockopt+0xb5/0x150 net/socket.c:2184
 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: 0033:0x4665d9
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 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 bc ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f184e926188 EFLAGS: 00000246 ORIG_RAX: 0000000000000036
RAX: ffffffffffffffda RBX: 000000000056c038 RCX: 00000000004665d9
RDX: 000000000000003b RSI: 0000000000000029 RDI: 0000000000000004
RBP: 00000000004bfcb9 R08: 0000000000000008 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 000000000056c038
R13: 00007ffde72e4e3f R14: 00007f184e926300 R15: 0000000000022000
 </TASK>