bisecting fixing commit since 442489c219235991de86d0277b5d859ede6d8792
building syzkaller on b712935571355df44e126c5b27c98ccd53d1d18b
testing commit 442489c219235991de86d0277b5d859ede6d8792
compiler: gcc (GCC) 8.4.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: 04b58bdae1fe901790eb594d5960846a4fcf3544d977a345b39b0b658aebd031
all runs: crashed: WARNING in cgroup_apply_control_disable
testing current HEAD 2f111a6fd5b5297b4e92f53798ca086f7c7d33a4
testing commit 2f111a6fd5b5297b4e92f53798ca086f7c7d33a4
compiler: gcc (GCC) 10.2.1 20210217, GNU ld (GNU Binutils for Debian) 2.35.2
kernel signature: a928836ff9a6b949ebfedbfc52d57602c2f72654c54a4f1aed10241c3970b53e
all runs: crashed: WARNING in cgroup_apply_control_disable
revisions tested: 2, total time: 20m2.411361121s (build: 11m57.577863763s, test: 7m8.60993353s)
the crash still happens on HEAD
commit msg: Merge tag 'ceph-for-5.15-rc7' of git://github.com/ceph/ceph-client
crash: WARNING in cgroup_apply_control_disable
------------[ cut here ]------------
WARNING: CPU: 0 PID: 6662 at kernel/cgroup/cgroup.c:3143 cgroup_ss_mask kernel/cgroup/cgroup.c:466 [inline]
WARNING: CPU: 0 PID: 6662 at kernel/cgroup/cgroup.c:3143 cgroup_apply_control_disable+0x348/0x450 kernel/cgroup/cgroup.c:3146
Modules linked in:
CPU: 1 PID: 6662 Comm: syz-executor.2 Not tainted 5.15.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
RIP: 0010:cgroup_apply_control_disable+0x348/0x450 kernel/cgroup/cgroup.c:3143
Code: 00 00 48 8d 78 08 48 89 fe 48 c1 ee 03 42 0f b6 34 3e 40 84 f6 74 0a 40 80 fe 03 0f 8e da 00 00 00 0f b7 40 08 e9 fe fe ff ff <0f> 0b e9 59 fe ff ff 48 83 c4 30 5b 5d 41 5c 41 5d 41 5e 41 5f c3
RSP: 0018:ffffc90007aa7b48 EFLAGS: 00010202
RAX: 1ffff11021024b82 RBX: ffffffff8974e640 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: ffffffff87eb8780 RDI: ffff888108125c10
RBP: ffff88817b0a6000 R08: 0000000000000000 R09: ffff8881f6433d8b
R10: ffffed103ec867b1 R11: 0000000000000903 R12: ffffffff896f5c00
R13: ffff888108125c00 R14: ffff88817b0a6000 R15: dffffc0000000000
FS:  0000000000c64400(0000) GS:ffff8881f6500000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f92287f1000 CR3: 000000010c1bc003 CR4: 00000000003706e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 cgroup_finalize_control kernel/cgroup/cgroup.c:3210 [inline]
 rebind_subsystems+0x33a/0xc00 kernel/cgroup/cgroup.c:1772
 cgroup_setup_root+0x37d/0x840 kernel/cgroup/cgroup.c:2016
 cgroup1_root_to_use kernel/cgroup/cgroup-v1.c:1203 [inline]
 cgroup1_get_tree+0x774/0xb50 kernel/cgroup/cgroup-v1.c:1220
 vfs_get_tree+0x7f/0x2c0 fs/super.c:1498
 do_new_mount fs/namespace.c:2988 [inline]
 path_mount+0x7e8/0x1a00 fs/namespace.c:3318
 do_mount fs/namespace.c:3331 [inline]
 __do_sys_mount fs/namespace.c:3539 [inline]
 __se_sys_mount fs/namespace.c:3516 [inline]
 __x64_sys_mount+0x1f5/0x260 fs/namespace.c:3516
 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: 0033:0x465c7a
Code: 48 c7 c2 bc ff ff ff f7 d8 64 89 02 b8 ff ff ff ff eb d2 e8 88 04 00 00 0f 1f 84 00 00 00 00 00 49 89 ca b8 a5 00 00 00 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:00007fffa410c918 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fffa410c958 RCX: 0000000000465c7a
RDX: 00000000004b753b RSI: 00000000004ad236 RDI: 00000000004ad1f9
RBP: 00007fffa410c950 R08: 00000000004bc388 R09: 00007fffa410c390
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffa410c950
R13: 0000000000000001 R14: 0000000000000000 R15: 0000000000400520
irq event stamp: 3717
hardirqs last  enabled at (3833): [<ffffffff814a75c4>] raw_spin_rq_unlock_irq kernel/sched/sched.h:1329 [inline]
hardirqs last  enabled at (3833): [<ffffffff814a75c4>] finish_lock_switch kernel/sched/core.c:4694 [inline]
hardirqs last  enabled at (3833): [<ffffffff814a75c4>] finish_task_switch.isra.0+0x224/0x980 kernel/sched/core.c:4812
hardirqs last disabled at (3900): [<ffffffff87964e3d>] __schedule+0x116d/0x2170 kernel/sched/core.c:6183
softirqs last  enabled at (3930): [<ffffffff81421d24>] invoke_softirq kernel/softirq.c:432 [inline]
softirqs last  enabled at (3930): [<ffffffff81421d24>] __irq_exit_rcu+0x194/0x220 kernel/softirq.c:636
softirqs last disabled at (3943): [<ffffffff81421d24>] invoke_softirq kernel/softirq.c:432 [inline]
softirqs last disabled at (3943): [<ffffffff81421d24>] __irq_exit_rcu+0x194/0x220 kernel/softirq.c:636
---[ end trace a7c29363fbda8302 ]---