bisecting fixing commit since 3a27203102ebfa67bd0bced05b1def499bb59db2
building syzkaller on caf12900683e434dcd16bdac59b909f13fb09099
testing commit 3a27203102ebfa67bd0bced05b1def499bb59db2 with gcc (GCC) 8.1.0
kernel signature: 394cf2cca33ff6fadc43fb238a87e25ab2dcb7bd
all runs: crashed: WARNING in cgroup_apply_control_enable
testing current HEAD 6794862a16ef41f753abd75c03a152836e4c8028
testing commit 6794862a16ef41f753abd75c03a152836e4c8028 with gcc (GCC) 8.1.0
kernel signature: 6b83151bead6fd46817fd49457208ad89bbf48f9
all runs: crashed: WARNING in cgroup_apply_control_enable
revisions tested: 2, total time: 19m16.958849183s (build: 11m30.566958491s, test: 6m58.136080856s)
the crash still happens on HEAD
commit msg: Merge tag 'for-5.5-rc1-kconfig-tag' of git://git.kernel.org/pub/scm/linux/kernel/git/kdave/linux
crash: WARNING in cgroup_apply_control_enable
8021q: adding VLAN 0 to HW filter on device team0
IPv6: ADDRCONF(NETDEV_CHANGE): veth1: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): veth0: link becomes ready
8021q: adding VLAN 0 to HW filter on device team0
------------[ cut here ]------------
WARNING: CPU: 0 PID: 7090 at kernel/cgroup/cgroup.c:3058 cgroup_apply_control_enable+0x242/0xbd0 kernel/cgroup/cgroup.c:3058
Kernel panic - not syncing: panic_on_warn set ...
CPU: 0 PID: 7090 Comm: syz-executor0 Not tainted 5.5.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
 __dump_stack lib/dump_stack.c:77 [inline]
 dump_stack+0x12d/0x187 lib/dump_stack.c:118
 panic+0x22a/0x4f5 kernel/panic.c:221
 __warn.cold.10+0x25/0x28 kernel/panic.c:582
 report_bug+0x1b0/0x270 lib/bug.c:195
 fixup_bug arch/x86/kernel/traps.c:174 [inline]
 do_error_trap+0x11b/0x200 arch/x86/kernel/traps.c:267
 do_invalid_op+0x36/0x40 arch/x86/kernel/traps.c:286
 invalid_op+0x23/0x30 arch/x86/entry/entry_64.S:1027
RIP: 0010:cgroup_apply_control_enable+0x242/0xbd0 kernel/cgroup/cgroup.c:3058
Code: 8b 4d c8 49 89 c4 4d 85 e4 74 21 49 8d 7c 24 18 48 89 f8 48 c1 e8 03 42 80 3c 38 00 0f 85 80 06 00 00 41 f6 44 24 18 02 74 02 <0f> 0b 48 8b 45 d0 80 38 00 0f 85 08 06 00 00 4d 8b 96 28 01 00 00
RSP: 0018:ffff8881ce11fba8 EFLAGS: 00010202
RAX: 1ffff1103a9f7583 RBX: 0000000000000000 RCX: ffff8881c02c4a18
RDX: 1ffffffff1025c2b RSI: ffffffff881bcb00 RDI: ffff8881d4fbac18
RBP: ffff8881ce11fc30 R08: ffffed103b606f8d R09: ffffffff881c3980
R10: ffff8881cd1f8000 R11: ffff8881db037c63 R12: ffff8881d4fbac00
R13: ffffffff881bc7b8 R14: ffff8881d9a30000 R15: dffffc0000000000
 cgroup_apply_control+0x15/0x30 kernel/cgroup/cgroup.c:3144
 cgroup_enable_threaded kernel/cgroup/cgroup.c:3361 [inline]
 cgroup_type_write+0x40f/0x5f0 kernel/cgroup/cgroup.c:3400
 cgroup_file_write+0x26e/0x7c0 kernel/cgroup/cgroup.c:3699
 kernfs_fop_write+0x213/0x420 fs/kernfs/file.c:315
 __vfs_write+0x61/0x110 fs/read_write.c:494
 vfs_write+0x18a/0x520 fs/read_write.c:558
 ksys_write+0x105/0x220 fs/read_write.c:611
 __do_sys_write fs/read_write.c:623 [inline]
 __se_sys_write fs/read_write.c:620 [inline]
 __x64_sys_write+0x6e/0xb0 fs/read_write.c:620
 do_syscall_64+0xd0/0x600 arch/x86/entry/common.c:294
 entry_SYSCALL_64_after_hwframe+0x49/0xbe
RIP: 0033:0x4576b9
Code: fd b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 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 cb b3 fb ff c3 66 2e 0f 1f 84 00 00 00 00
RSP: 002b:00007fb9a91b2c78 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 00000000004576b9
RDX: 0000000000000009 RSI: 0000000020000140 RDI: 0000000000000006
RBP: 000000000072bf00 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fb9a91b36d4
R13: 00000000004c5637 R14: 00000000004d8f80 R15: 00000000ffffffff
Kernel Offset: disabled
Rebooting in 86400 seconds..