Warning: Permanently added '[localhost]:56939' (ECDSA) to the list of known hosts.
2021/12/06 11:37:34 fuzzer started
2021/12/06 11:37:34 dialing manager at localhost:35719
2021/12/06 11:37:34 checking machine...
2021/12/06 11:37:34 checking revisions...
syzkaller login: [ 36.100041] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:37:34 testing simple program...
[ 36.150360] cgroup: Unknown subsys name 'net'
[ 36.151513] cgroup: Unknown subsys name 'net_prio'
[ 36.152608] cgroup: Unknown subsys name 'devices'
[ 36.153842] cgroup: Unknown subsys name 'blkio'
[ 36.180585]
[ 36.180867] =========================
[ 36.181366] WARNING: held lock freed!
[ 36.181894] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.182446] -------------------------
[ 36.182965] kworker/0:1/10 is freeing memory ffff88800e441c00-ffff88800e441dff, with a lock still held there!
[ 36.184343] ffff88800e441d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.185594] 3 locks held by kworker/0:1/10:
[ 36.186224] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.187591] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.189227] #2: ffff88800e441d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.190285]
[ 36.190285] stack backtrace:
[ 36.190784] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.192021] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.193663] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.194259] Call Trace:
[ 36.194524]
[ 36.194755] dump_stack_lvl+0x8b/0xb3
[ 36.195145] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.195695] ? kernfs_put.part.0+0x334/0x540
[ 36.196150] kfree+0xb3/0x5a0
[ 36.196470] ? kmem_cache_free+0xce/0x640
[ 36.197024] kernfs_put.part.0+0x334/0x540
[ 36.197464] kernfs_put+0x42/0x50
[ 36.197812] __kernfs_remove+0x7ce/0xb00
[ 36.198360] ? lock_is_held_type+0xd7/0x130
[ 36.199023] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.199682] ? down_write+0xde/0x150
[ 36.200138] ? down_write_killable_nested+0x180/0x180
[ 36.200777] kernfs_destroy_root+0x89/0xb0
[ 36.201304] css_free_rwork_fn+0xa28/0xf40
[ 36.201838] process_one_work+0xa30/0x1710
[ 36.202356] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.202818] ? rwlock_bug.part.0+0x90/0x90
[ 36.203238] ? _raw_spin_lock_irq+0x41/0x50
[ 36.203670] worker_thread+0x62a/0x13e0
[ 36.204107] ? process_one_work+0x1710/0x1710
[ 36.204577] kthread+0x40c/0x500
[ 36.204903] ? set_kthread_struct+0x130/0x130
[ 36.205341] ret_from_fork+0x22/0x30
[ 36.205778]
[ 36.206162] ==================================================================
[ 36.206958] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.207657] Read of size 8 at addr ffff88800e441d40 by task kworker/0:1/10
[ 36.208439]
[ 36.208615] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.209494] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.210788] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.211411] Call Trace:
[ 36.211688]
[ 36.211935] dump_stack_lvl+0x8b/0xb3
[ 36.212406] print_address_description.constprop.0+0x1f/0x180
[ 36.213074] ? up_write+0x3ac/0x460
[ 36.213538] ? up_write+0x3ac/0x460
[ 36.213953] kasan_report.cold+0x7f/0x11b
[ 36.214458] ? up_write+0x3ac/0x460
[ 36.214855] up_write+0x3ac/0x460
[ 36.215266] css_free_rwork_fn+0xa28/0xf40
[ 36.215757] process_one_work+0xa30/0x1710
[ 36.216234] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.216764] ? rwlock_bug.part.0+0x90/0x90
[ 36.217256] ? _raw_spin_lock_irq+0x41/0x50
[ 36.217749] worker_thread+0x62a/0x13e0
[ 36.218243] ? process_one_work+0x1710/0x1710
[ 36.218744] kthread+0x40c/0x500
[ 36.219147] ? set_kthread_struct+0x130/0x130
[ 36.219659] ret_from_fork+0x22/0x30
[ 36.220079]
[ 36.220334]
[ 36.220530] Allocated by task 280:
[ 36.220898] kasan_save_stack+0x1e/0x40
[ 36.221365] __kasan_kmalloc+0x81/0xa0
[ 36.221795] kernfs_create_root+0x4c/0x410
[ 36.222308] cgroup_setup_root+0x346/0xb60
[ 36.222845] cgroup1_get_tree+0xc1b/0x1370
[ 36.223374] vfs_get_tree+0x8e/0x2f0
[ 36.223838] path_mount+0x131b/0x1f80
[ 36.224313] __x64_sys_mount+0x27e/0x300
[ 36.224824] do_syscall_64+0x3b/0x90
[ 36.225287] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.225991]
[ 36.226214] Freed by task 10:
[ 36.226642] kasan_save_stack+0x1e/0x40
[ 36.227173] kasan_set_track+0x21/0x30
[ 36.227667] kasan_set_free_info+0x20/0x30
[ 36.228147] __kasan_slab_free+0x108/0x170
[ 36.228611] kfree+0xc5/0x5a0
[ 36.228955] kernfs_put.part.0+0x334/0x540
[ 36.229452] kernfs_put+0x42/0x50
[ 36.229854] __kernfs_remove+0x7ce/0xb00
[ 36.230382] kernfs_destroy_root+0x89/0xb0
[ 36.230937] css_free_rwork_fn+0xa28/0xf40
[ 36.231435] process_one_work+0xa30/0x1710
[ 36.231902] worker_thread+0x62a/0x13e0
[ 36.232359] kthread+0x40c/0x500
[ 36.232791] ret_from_fork+0x22/0x30
[ 36.233212]
[ 36.233406] The buggy address belongs to the object at ffff88800e441c00
[ 36.233406] which belongs to the cache kmalloc-512 of size 512
[ 36.234851] The buggy address is located 320 bytes inside of
[ 36.234851] 512-byte region [ffff88800e441c00, ffff88800e441e00)
[ 36.236181] The buggy address belongs to the page:
[ 36.236706] page:00000000c902ddea refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe440
[ 36.237702] head:00000000c902ddea order:2 compound_mapcount:0 compound_pincount:0
[ 36.238682] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.239479] raw: 0100000000010200 ffffea00003a8700 dead000000000002 ffff888007841c80
[ 36.240537] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.241582] page dumped because: kasan: bad access detected
[ 36.242345]
[ 36.242573] Memory state around the buggy address:
[ 36.243229] ffff88800e441c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.244190] ffff88800e441c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.245182] >ffff88800e441d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.246201] ^
[ 36.246928] ffff88800e441d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.247938] ffff88800e441e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.248850] ==================================================================
[ 36.279464] cgroup: Unknown subsys name 'hugetlb'
[ 36.280257] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:37:34 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197570
R8 =0000000000000058 R9 =000000000000002d 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 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=00007ffd9b0b0000 CR3=0000000005026000 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 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f738c20ec607440
YMM04=0000000000000000 0000000000000000 0000000000000000 3fc08f9c2de00cb4
YMM05=0000000000000000 0000000000000000 000000c000082aa0 000000c000082a80
YMM06=0000000000000000 0000000000000000 0000000000000000 3fd3333333333333
YMM07=0000000000000000 0000000000000000 0000000000000000 3fda0c3f9007ba25
YMM08=0000000000000000 0000000000000000 0000000000000000 3fe30b9ee32a9fca
YMM09=0000000000000000 0000000000000000 0000000000000000 3fbec35d7fbb64b8
YMM10=0000000000000000 0000000000000000 0000000000000000 3fd2b6d9babe3186
YMM11=0000000000000000 0000000000000000 000000c0002f5e30 000000c0000834c0
YMM12=0000000000000000 0000000000000000 000000c0000821d0 000000c0000822a0
YMM13=0000000000000000 0000000000000000 000000c0000821f0 000000c0000821e0
YMM14=0000000000000000 0000000000000000 000000c0000821b0 000000c0000821c0
YMM15=0000000000000000 0000000000000000 000000c000558000 000000c0000824a0
info registers vcpu 1
RAX=ffff88800e067de0 RBX=ffff88800e067de0 RCX=0000000000000000 RDX=0000000000000000
RSI=0000000000000001 RDI=0000000000000000 RBP=0000000000000000 RSP=ffff88800e067d60
R8 =0000000000000000 R9 =ffff88800e067de0 R10=ffffed1001c0cfc3 R11=0000000000000001
R12=0000000000000001 R13=0000000000000001 R14=ffff88806cf2a740 R15=ffff88800e067de0
RIP=ffffffff814318b3 RFL=00000246 [---Z-P-] 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 000000c000030090 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=00007feed69b3000 CR3=000000000cc0c000 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 4100610000000000
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