Warning: Permanently added '[localhost]:50349' (ECDSA) to the list of known hosts.
2021/12/06 11:33:56 fuzzer started
2021/12/06 11:33:57 dialing manager at localhost:35719
2021/12/06 11:33:57 checking machine...
2021/12/06 11:33:57 checking revisions...
syzkaller login: [ 35.394741] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:33:57 testing simple program...
[ 35.442653] cgroup: Unknown subsys name 'net'
[ 35.443991] cgroup: Unknown subsys name 'net_prio'
[ 35.445497] cgroup: Unknown subsys name 'devices'
[ 35.446880] cgroup: Unknown subsys name 'blkio'
[ 35.471611]
[ 35.472015] =========================
[ 35.472804] WARNING: held lock freed!
[ 35.473604] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.474662] -------------------------
[ 35.475701] kworker/1:0/18 is freeing memory ffff88800cd43c00-ffff88800cd43dff, with a lock still held there!
[ 35.478463] ffff88800cd43d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.480345] 3 locks held by kworker/1:0/18:
[ 35.481248] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.483481] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.486009] #2: ffff88800cd43d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.487989]
[ 35.487989] stack backtrace:
[ 35.488921] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.490579] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.492966] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.494103] Call Trace:
[ 35.494646]
[ 35.495109] dump_stack_lvl+0x8b/0xb3
[ 35.495932] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.497037] ? kernfs_put.part.0+0x334/0x540
[ 35.497983] kfree+0xb3/0x5a0
[ 35.498642] ? kmem_cache_free+0xce/0x640
[ 35.499531] kernfs_put.part.0+0x334/0x540
[ 35.500432] kernfs_put+0x42/0x50
[ 35.501161] __kernfs_remove+0x7ce/0xb00
[ 35.502027] ? lock_is_held_type+0xd7/0x130
[ 35.502935] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.504035] ? down_write+0xde/0x150
[ 35.504832] ? down_write_killable_nested+0x180/0x180
[ 35.505956] kernfs_destroy_root+0x89/0xb0
[ 35.506859] css_free_rwork_fn+0xa28/0xf40
[ 35.507756] process_one_work+0xa30/0x1710
[ 35.508647] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.509637] ? rwlock_bug.part.0+0x90/0x90
[ 35.510556] ? _raw_spin_lock_irq+0x41/0x50
[ 35.511466] worker_thread+0x62a/0x13e0
[ 35.512307] ? process_one_work+0x1710/0x1710
[ 35.513263] kthread+0x40c/0x500
[ 35.513982] ? set_kthread_struct+0x130/0x130
[ 35.514937] ret_from_fork+0x22/0x30
[ 35.515805]
[ 35.516380] ==================================================================
[ 35.517896] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.519131] Read of size 8 at addr ffff88800cd43d40 by task kworker/1:0/18
[ 35.520596]
[ 35.520934] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.522575] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.524956] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.526217] Call Trace:
[ 35.526887]
[ 35.527386] dump_stack_lvl+0x8b/0xb3
[ 35.528192] print_address_description.constprop.0+0x1f/0x180
[ 35.529422] ? up_write+0x3ac/0x460
[ 35.530180] ? up_write+0x3ac/0x460
[ 35.530937] kasan_report.cold+0x7f/0x11b
[ 35.531815] ? up_write+0x3ac/0x460
[ 35.532586] up_write+0x3ac/0x460
[ 35.533321] css_free_rwork_fn+0xa28/0xf40
[ 35.534226] process_one_work+0xa30/0x1710
[ 35.535114] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.536099] ? rwlock_bug.part.0+0x90/0x90
[ 35.536988] ? _raw_spin_lock_irq+0x41/0x50
[ 35.537894] worker_thread+0x62a/0x13e0
[ 35.538717] ? process_one_work+0x1710/0x1710
[ 35.539664] kthread+0x40c/0x500
[ 35.540372] ? set_kthread_struct+0x130/0x130
[ 35.541319] ret_from_fork+0x22/0x30
[ 35.542108]
[ 35.542586]
[ 35.542921] Allocated by task 281:
[ 35.543648] kasan_save_stack+0x1e/0x40
[ 35.544488] __kasan_kmalloc+0x81/0xa0
[ 35.545335] kernfs_create_root+0x4c/0x410
[ 35.546262] cgroup_setup_root+0x346/0xb60
[ 35.547163] cgroup1_get_tree+0xc1b/0x1370
[ 35.548080] vfs_get_tree+0x8e/0x2f0
[ 35.548886] path_mount+0x131b/0x1f80
[ 35.549725] __x64_sys_mount+0x27e/0x300
[ 35.550609] do_syscall_64+0x3b/0x90
[ 35.551396] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.552487]
[ 35.552824] Freed by task 18:
[ 35.553491] kasan_save_stack+0x1e/0x40
[ 35.554350] kasan_set_track+0x21/0x30
[ 35.555179] kasan_set_free_info+0x20/0x30
[ 35.556062] __kasan_slab_free+0x108/0x170
[ 35.556953] kfree+0xc5/0x5a0
[ 35.557632] kernfs_put.part.0+0x334/0x540
[ 35.558548] kernfs_put+0x42/0x50
[ 35.559287] __kernfs_remove+0x7ce/0xb00
[ 35.560140] kernfs_destroy_root+0x89/0xb0
[ 35.561024] css_free_rwork_fn+0xa28/0xf40
[ 35.561953] process_one_work+0xa30/0x1710
[ 35.562852] worker_thread+0x62a/0x13e0
[ 35.563693] kthread+0x40c/0x500
[ 35.564414] ret_from_fork+0x22/0x30
[ 35.565200]
[ 35.565538] Last potentially related work creation:
[ 35.566602] kasan_save_stack+0x1e/0x40
[ 35.567450] __kasan_record_aux_stack+0x97/0xa0
[ 35.568438] call_rcu+0x82/0xa30
[ 35.569154] __key_link+0xea/0x180
[ 35.569916] __key_instantiate_and_link+0x231/0x3e0
[ 35.571009] key_create_or_update+0x704/0xc40
[ 35.571960] __do_sys_add_key+0x215/0x430
[ 35.572837] do_syscall_64+0x3b/0x90
[ 35.573628] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.574754]
[ 35.575101] The buggy address belongs to the object at ffff88800cd43c00
[ 35.575101] which belongs to the cache kmalloc-512 of size 512
[ 35.577744] The buggy address is located 320 bytes inside of
[ 35.577744] 512-byte region [ffff88800cd43c00, ffff88800cd43e00)
[ 35.580264] The buggy address belongs to the page:
[ 35.581300] page:00000000eb326e4a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcd40
[ 35.583302] head:00000000eb326e4a order:2 compound_mapcount:0 compound_pincount:0
[ 35.584899] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.586174] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 35.587843] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.589515] page dumped because: kasan: bad access detected
[ 35.590736]
[ 35.591083] Memory state around the buggy address:
[ 35.592129] ffff88800cd43c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.593697] ffff88800cd43c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.595257] >ffff88800cd43d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.596807] ^
[ 35.597963] ffff88800cd43d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.599521] ffff88800cd43e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.601070] ==================================================================
[ 35.639242] cgroup: Unknown subsys name 'hugetlb'
[ 35.641337] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:33:57 Registers:
info registers vcpu 0
RAX=ffffffff84078af0 RBX=ffffffff85032600 RCX=ffffffff8405abe1 RDX=ffffed100d9c7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000000 RSP=ffffffff85007e40
R8 =0000000000000000 R9 =ffff88806ce38a13 R10=ffffed100d9c7142 R11=0000000000000001
R12=fffffbfff0a064c0 R13=ffffffff858bd8d0 R14=0000000000000000 R15=dffffc0000000000
RIP=ffffffff84078afb RFL=00000246 [---Z-P-] CPL=0 II=0 A20=1 SMM=0 HLT=1
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806ce00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007fcf58713230 CR3=000000000eab8000 CR4=00350ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 bfe62e42fefa39ef
YMM03=0000000000000000 0000000000000000 0000ff0000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000
info registers vcpu 1
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f5f0
R8 =0000000000000071 R9 =0000000000000020 R10=ffffffff8234ae1b R11=000000000000000a
R12=0000000000000020 R13=fffffbfff0e70397 R14=fffffbfff0e7034e R15=dffffc0000000000
RIP=ffffffff823640b0 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 00000000 00000000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 00000000 00000000
FS =0000 0000000000000000 00000000 00000000
GS =0000 ffff88806cf00000 00000000 00000000
LDT=0000 fffffe0000000000 00000000 00000000
TR =0040 fffffe000004a000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000048000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=00007ffee46aa000 CR3=000000000eab8000 CR4=00350ee0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000ffff0ff0 DR7=0000000000000400
EFER=0000000000000d01
FCW=037f FSW=0000 [ST=0] FTW=00 MXCSR=00001fa0
FPR0=0000000000000000 0000 FPR1=0000000000000000 0000
FPR2=0000000000000000 0000 FPR3=0000000000000000 0000
FPR4=0000000000000000 0000 FPR5=0000000000000000 0000
FPR6=0000000000000000 0000 FPR7=0000000000000000 0000
YMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 bfe62e42fefa39ef
YMM03=0000000000000000 0000000000000000 0000ff0000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 732f6c61636f6c2f 7273752f3d485441
YMM05=0000000000000000 0000000000000000 622f6c61636f6c2f 7273752f3a6e6962
YMM06=0000000000000000 0000000000000000 73752f3a6e696273 2f7273752f3a6e69
YMM07=0000000000000000 0000000000000000 6e69622f3a6e6962 732f3a6e69622f72
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000