Warning: Permanently added '[localhost]:16794' (ECDSA) to the list of known hosts.
2021/12/06 11:31:06 fuzzer started
2021/12/06 11:31:07 dialing manager at localhost:35719
2021/12/06 11:31:07 checking machine...
2021/12/06 11:31:07 checking revisions...
syzkaller login: [ 34.863926] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:31:07 testing simple program...
[ 34.906975] cgroup: Unknown subsys name 'net'
[ 34.908279] cgroup: Unknown subsys name 'net_prio'
[ 34.909717] cgroup: Unknown subsys name 'devices'
[ 34.910973] cgroup: Unknown subsys name 'blkio'
[ 34.931216]
[ 34.931577] =========================
[ 34.932330] WARNING: held lock freed!
[ 34.933071] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.934054] -------------------------
[ 34.934970] kworker/1:1/31 is freeing memory ffff88801ec40c00-ffff88801ec40dff, with a lock still held there!
[ 34.937836] ffff88801ec40d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.939588] 3 locks held by kworker/1:1/31:
[ 34.940430] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.942462] #1: ffff888009aa7da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.944786] #2: ffff88801ec40d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.946597]
[ 34.946597] stack backtrace:
[ 34.947462] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.948993] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.951202] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.952257] Call Trace:
[ 34.952755]
[ 34.953187] dump_stack_lvl+0x8b/0xb3
[ 34.953934] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.954963] ? kernfs_put.part.0+0x334/0x540
[ 34.955827] kfree+0xb3/0x5a0
[ 34.956446] ? kmem_cache_free+0xce/0x640
[ 34.957256] kernfs_put.part.0+0x334/0x540
[ 34.958092] kernfs_put+0x42/0x50
[ 34.958766] __kernfs_remove+0x7ce/0xb00
[ 34.959560] ? lock_is_held_type+0xd7/0x130
[ 34.960425] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.961448] ? down_write+0xde/0x150
[ 34.962172] ? down_write_killable_nested+0x180/0x180
[ 34.963181] kernfs_destroy_root+0x89/0xb0
[ 34.964006] css_free_rwork_fn+0xa28/0xf40
[ 34.964842] process_one_work+0xa30/0x1710
[ 34.965675] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.966585] ? rwlock_bug.part.0+0x90/0x90
[ 34.967414] ? _raw_spin_lock_irq+0x41/0x50
[ 34.968276] worker_thread+0x62a/0x13e0
[ 34.969059] ? process_one_work+0x1710/0x1710
[ 34.969932] kthread+0x40c/0x500
[ 34.970591] ? set_kthread_struct+0x130/0x130
[ 34.971470] ret_from_fork+0x22/0x30
[ 34.972214]
[ 34.972777] ==================================================================
[ 34.974189] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.975338] Read of size 8 at addr ffff88801ec40d40 by task kworker/1:1/31
[ 34.976692]
[ 34.977011] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.978511] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.980709] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.981737] Call Trace:
[ 34.982230]
[ 34.982660] dump_stack_lvl+0x8b/0xb3
[ 34.983394] print_address_description.constprop.0+0x1f/0x180
[ 34.984532] ? up_write+0x3ac/0x460
[ 34.985228] ? up_write+0x3ac/0x460
[ 34.985926] kasan_report.cold+0x7f/0x11b
[ 34.986728] ? up_write+0x3ac/0x460
[ 34.987428] up_write+0x3ac/0x460
[ 34.988095] css_free_rwork_fn+0xa28/0xf40
[ 34.988926] process_one_work+0xa30/0x1710
[ 34.989746] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.990655] ? rwlock_bug.part.0+0x90/0x90
[ 34.991471] ? _raw_spin_lock_irq+0x41/0x50
[ 34.992327] worker_thread+0x62a/0x13e0
[ 34.993104] ? process_one_work+0x1710/0x1710
[ 34.993978] kthread+0x40c/0x500
[ 34.994630] ? set_kthread_struct+0x130/0x130
[ 34.995500] ret_from_fork+0x22/0x30
[ 34.996232]
[ 34.996675]
[ 34.996986] Allocated by task 281:
[ 34.997667] kasan_save_stack+0x1e/0x40
[ 34.998431] __kasan_kmalloc+0x81/0xa0
[ 34.999176] kernfs_create_root+0x4c/0x410
[ 34.999987] cgroup_setup_root+0x346/0xb60
[ 35.000819] cgroup1_get_tree+0xc1b/0x1370
[ 35.001659] vfs_get_tree+0x8e/0x2f0
[ 35.002388] path_mount+0x131b/0x1f80
[ 35.003123] __x64_sys_mount+0x27e/0x300
[ 35.003909] do_syscall_64+0x3b/0x90
[ 35.004640] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.005640]
[ 35.005953] Freed by task 31:
[ 35.006557] kasan_save_stack+0x1e/0x40
[ 35.007325] kasan_set_track+0x21/0x30
[ 35.008078] kasan_set_free_info+0x20/0x30
[ 35.008907] __kasan_slab_free+0x108/0x170
[ 35.009737] kfree+0xc5/0x5a0
[ 35.010354] kernfs_put.part.0+0x334/0x540
[ 35.011173] kernfs_put+0x42/0x50
[ 35.011840] __kernfs_remove+0x7ce/0xb00
[ 35.012639] kernfs_destroy_root+0x89/0xb0
[ 35.013453] css_free_rwork_fn+0xa28/0xf40
[ 35.014265] process_one_work+0xa30/0x1710
[ 35.015081] worker_thread+0x62a/0x13e0
[ 35.015847] kthread+0x40c/0x500
[ 35.016502] ret_from_fork+0x22/0x30
[ 35.017219]
[ 35.017538] The buggy address belongs to the object at ffff88801ec40c00
[ 35.017538] which belongs to the cache kmalloc-512 of size 512
[ 35.019940] The buggy address is located 320 bytes inside of
[ 35.019940] 512-byte region [ffff88801ec40c00, ffff88801ec40e00)
[ 35.022205] The buggy address belongs to the page:
[ 35.023145] page:000000001997fdb6 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1ec40
[ 35.024958] head:000000001997fdb6 order:2 compound_mapcount:0 compound_pincount:0
[ 35.026421] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.027562] raw: 0100000000010200 0000000000000000 dead000000000122 ffff888007841c80
[ 35.029090] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 35.030596] page dumped because: kasan: bad access detected
[ 35.031682]
[ 35.032001] Memory state around the buggy address:
[ 35.032950] ffff88801ec40c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.034363] ffff88801ec40c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.035776] >ffff88801ec40d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.037192] ^
[ 35.038236] ffff88801ec40d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.039635] ffff88801ec40e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.041039] ==================================================================
[ 35.078450] cgroup: Unknown subsys name 'hugetlb'
[ 35.079783] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:31:07 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=00007fd63a06fc40 CR3=000000000faa2000 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 4108ed0000000000
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=0000000000000031 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888009aa7648
R8 =0000000000000000 R9 =0000000000000031 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000031 R13=0000000000000031 R14=ffffffff87381a20 R15=dffffc0000000000
RIP=ffffffff82364138 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=00007ffeb1381840 CR3=000000000faa2000 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 41442fa3e0665862
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f6d9cb17187cb7c
YMM04=0000000000000000 0000000000000000 00007fd0f534f200 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c00037c360
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0002107c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c000280240 000000c00018ab00
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c000372400 000000c000319000
YMM14=0000000000000000 0000000000000000 000000c0002ea400 000000c000359d00
YMM15=0000000000000000 0000000000000000 000000c000319800 000000c000289c00