Warning: Permanently added '[localhost]:28094' (ECDSA) to the list of known hosts.
2021/12/06 11:36:15 fuzzer started
2021/12/06 11:36:15 dialing manager at localhost:35719
2021/12/06 11:36:15 checking machine...
2021/12/06 11:36:15 checking revisions...
syzkaller login: [ 35.495776] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:36:15 testing simple program...
[ 35.532991] cgroup: Unknown subsys name 'net'
[ 35.534335] cgroup: Unknown subsys name 'net_prio'
[ 35.535984] cgroup: Unknown subsys name 'devices'
[ 35.537165] cgroup: Unknown subsys name 'blkio'
[ 35.560512]
[ 35.560784] =========================
[ 35.561265] WARNING: held lock freed!
[ 35.561767] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.562371] -------------------------
[ 35.562811] kworker/1:1/31 is freeing memory ffff88800cb90c00-ffff88800cb90dff, with a lock still held there!
[ 35.564000] ffff88800cb90d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.565316] 3 locks held by kworker/1:1/31:
[ 35.566635] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.568273] #1: ffff888009997da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.569702] #2: ffff88800cb90d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.570803]
[ 35.570803] stack backtrace:
[ 35.571333] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.572255] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.573745] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.574474] Call Trace:
[ 35.574825]
[ 35.575135] dump_stack_lvl+0x8b/0xb3
[ 35.575611] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.576277] ? kernfs_put.part.0+0x334/0x540
[ 35.576863] kfree+0xb3/0x5a0
[ 35.577316] ? kmem_cache_free+0xce/0x640
[ 35.577873] kernfs_put.part.0+0x334/0x540
[ 35.578444] kernfs_put+0x42/0x50
[ 35.578905] __kernfs_remove+0x7ce/0xb00
[ 35.579447] ? lock_is_held_type+0xd7/0x130
[ 35.580020] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.580730] ? down_write+0xde/0x150
[ 35.581238] ? down_write_killable_nested+0x180/0x180
[ 35.581929] kernfs_destroy_root+0x89/0xb0
[ 35.582507] css_free_rwork_fn+0xa28/0xf40
[ 35.583097] process_one_work+0xa30/0x1710
[ 35.583674] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.584315] ? rwlock_bug.part.0+0x90/0x90
[ 35.584890] ? _raw_spin_lock_irq+0x41/0x50
[ 35.585518] worker_thread+0x62a/0x13e0
[ 35.586063] ? process_one_work+0x1710/0x1710
[ 35.586672] kthread+0x40c/0x500
[ 35.587135] ? set_kthread_struct+0x130/0x130
[ 35.587738] ret_from_fork+0x22/0x30
[ 35.588254]
[ 35.588736] ==================================================================
[ 35.589747] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.590542] Read of size 8 at addr ffff88800cb90d40 by task kworker/1:1/31
[ 35.591464]
[ 35.591685] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.592732] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.594157] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.594886] Call Trace:
[ 35.595258]
[ 35.595559] dump_stack_lvl+0x8b/0xb3
[ 35.596091] print_address_description.constprop.0+0x1f/0x180
[ 35.596915] ? up_write+0x3ac/0x460
[ 35.597445] ? up_write+0x3ac/0x460
[ 35.597934] kasan_report.cold+0x7f/0x11b
[ 35.598498] ? up_write+0x3ac/0x460
[ 35.598988] up_write+0x3ac/0x460
[ 35.599463] css_free_rwork_fn+0xa28/0xf40
[ 35.600042] process_one_work+0xa30/0x1710
[ 35.600636] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.601293] ? rwlock_bug.part.0+0x90/0x90
[ 35.601865] ? _raw_spin_lock_irq+0x41/0x50
[ 35.602449] worker_thread+0x62a/0x13e0
[ 35.602994] ? process_one_work+0x1710/0x1710
[ 35.603601] kthread+0x40c/0x500
[ 35.604053] ? set_kthread_struct+0x130/0x130
[ 35.605263] ret_from_fork+0x22/0x30
[ 35.606190]
[ 35.606740]
[ 35.607123] Allocated by task 281:
[ 35.608005] kasan_save_stack+0x1e/0x40
[ 35.608995] __kasan_kmalloc+0x81/0xa0
[ 35.609936] kernfs_create_root+0x4c/0x410
[ 35.610920] cgroup_setup_root+0x346/0xb60
[ 35.611961] cgroup1_get_tree+0xc1b/0x1370
[ 35.612837] vfs_get_tree+0x8e/0x2f0
[ 35.613658] path_mount+0x131b/0x1f80
[ 35.614463] __x64_sys_mount+0x27e/0x300
[ 35.615343] do_syscall_64+0x3b/0x90
[ 35.616293] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.617563]
[ 35.617874] Freed by task 31:
[ 35.618464] kasan_save_stack+0x1e/0x40
[ 35.619230] kasan_set_track+0x21/0x30
[ 35.619973] kasan_set_free_info+0x20/0x30
[ 35.620768] __kasan_slab_free+0x108/0x170
[ 35.621463] kfree+0xc5/0x5a0
[ 35.621818] kernfs_put.part.0+0x334/0x540
[ 35.622307] kernfs_put+0x42/0x50
[ 35.622718] __kernfs_remove+0x7ce/0xb00
[ 35.623206] kernfs_destroy_root+0x89/0xb0
[ 35.623719] css_free_rwork_fn+0xa28/0xf40
[ 35.624242] process_one_work+0xa30/0x1710
[ 35.624767] worker_thread+0x62a/0x13e0
[ 35.625285] kthread+0x40c/0x500
[ 35.625696] ret_from_fork+0x22/0x30
[ 35.626154]
[ 35.626357] The buggy address belongs to the object at ffff88800cb90c00
[ 35.626357] which belongs to the cache kmalloc-512 of size 512
[ 35.627847] The buggy address is located 320 bytes inside of
[ 35.627847] 512-byte region [ffff88800cb90c00, ffff88800cb90e00)
[ 35.629311] The buggy address belongs to the page:
[ 35.629888] page:00000000fb122d92 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xcb90
[ 35.631008] head:00000000fb122d92 order:2 compound_mapcount:0 compound_pincount:0
[ 35.631926] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.632639] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 35.633643] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.634600] page dumped because: kasan: bad access detected
[ 35.635280]
[ 35.635480] Memory state around the buggy address:
[ 35.636064] ffff88800cb90c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.636943] ffff88800cb90c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.638836] >ffff88800cb90d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.640688] ^
[ 35.641977] ffff88800cb90d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.643528] ffff88800cb90e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.644716] ==================================================================
[ 35.681469] cgroup: Unknown subsys name 'hugetlb'
[ 35.682342] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:36:16 Registers:
info registers vcpu 0
RAX=0000000000000007 RBX=1ffff11001b08fcc RCX=0000000000000000 RDX=0000000000000000
RSI=ffffffff81095805 RDI=ffff88800e5666c0 RBP=ffff88800e566680 RSP=ffff88800d847e60
R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8109dd49 R11=0000000000000000
R12=0000000000000007 R13=ffff88800e566640 R14=0000000000000000 R15=0000000000000000
RIP=ffffffff81095817 RFL=00000056 [---ZAP-] 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 000000c00009c090 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=000056313abd9560 CR3=000000000d6e4000 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 4147b05a8c517423
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f7449e342a6ab96
YMM04=0000000000000000 0000000000000000 6174736e69206572 6120737265646165
YMM05=0000000000000000 0000000000000000 613c206564756c63 6e69230a64656c6c
YMM06=0000000000000000 0000000000000000 736e65202f2f203e 6d687469726f676c
YMM07=0000000000000000 0000000000000000 6568202b2b432074 6168742073657275
YMM08=0000000000000000 0000000000000000 736e692065726120 7372656461656820
YMM09=0000000000000000 0000000000000000 206564756c636e69 230a64656c6c6174
YMM10=0000000000000000 0000000000000000 65202f2f203e6d68 7469726f676c613c
YMM11=0000000000000000 0000000000000000 202b2b4320746168 742073657275736e
YMM12=0000000000000000 0000000000000000 74736e6920657261 2073726564616568
YMM13=0000000000000000 0000000000000000 29286e69616d2074 6e690a64656c6c61
YMM14=0000000000000000 0000000000000000 6f6c6c6548222866 746e697270207b20
YMM15=0000000000000000 0000000000000000 0a7d203b29226e5c 21646c726f57202c
info registers vcpu 1
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880099975c8
R8 =0000000000000074 R9 =000000000000002e 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=00007f4a7a06eec0 CR3=000000000d6e4000 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 4107ea4000000000
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