Warning: Permanently added '[localhost]:27881' (ECDSA) to the list of known hosts.
2021/12/06 11:27:32 fuzzer started
2021/12/06 11:27:32 dialing manager at localhost:35719
2021/12/06 11:27:32 checking machine...
2021/12/06 11:27:32 checking revisions...
syzkaller login: [ 36.474934] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:27:32 testing simple program...
[ 36.515629] cgroup: Unknown subsys name 'net'
[ 36.518124] cgroup: Unknown subsys name 'net_prio'
[ 36.519646] cgroup: Unknown subsys name 'devices'
[ 36.521124] cgroup: Unknown subsys name 'blkio'
[ 36.544630]
[ 36.545061] =========================
[ 36.545788] WARNING: held lock freed!
[ 36.546678] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.547912] -------------------------
[ 36.548625] kworker/1:1/31 is freeing memory ffff88800e762000-ffff88800e7621ff, with a lock still held there!
[ 36.551283] ffff88800e762148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.553007] 3 locks held by kworker/1:1/31:
[ 36.553826] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.555822] #1: ffff888009aa7da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.558087] #2: ffff88800e762148 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.559895]
[ 36.559895] stack backtrace:
[ 36.560740] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.562227] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.564415] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.565447] Call Trace:
[ 36.565940]
[ 36.566367] dump_stack_lvl+0x8b/0xb3
[ 36.567104] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.568137] ? kernfs_put.part.0+0x334/0x540
[ 36.568989] kfree+0xb3/0x5a0
[ 36.569592] ? kmem_cache_free+0xce/0x640
[ 36.570391] kernfs_put.part.0+0x334/0x540
[ 36.571211] kernfs_put+0x42/0x50
[ 36.571891] __kernfs_remove+0x7ce/0xb00
[ 36.572673] ? lock_is_held_type+0xd7/0x130
[ 36.573504] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.574517] ? down_write+0xde/0x150
[ 36.575234] ? down_write_killable_nested+0x180/0x180
[ 36.576236] kernfs_destroy_root+0x89/0xb0
[ 36.577047] css_free_rwork_fn+0xa28/0xf40
[ 36.577863] process_one_work+0xa30/0x1710
[ 36.578680] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.579575] ? rwlock_bug.part.0+0x90/0x90
[ 36.580410] ? _raw_spin_lock_irq+0x41/0x50
[ 36.581244] worker_thread+0x62a/0x13e0
[ 36.582020] ? process_one_work+0x1710/0x1710
[ 36.582884] kthread+0x40c/0x500
[ 36.583532] ? set_kthread_struct+0x130/0x130
[ 36.584401] ret_from_fork+0x22/0x30
[ 36.585124]
[ 36.585626] ==================================================================
[ 36.587005] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.588145] Read of size 8 at addr ffff88800e762140 by task kworker/1:1/31
[ 36.589475]
[ 36.589793] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.591291] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.593494] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.594526] Call Trace:
[ 36.595019]
[ 36.595444] dump_stack_lvl+0x8b/0xb3
[ 36.596194] print_address_description.constprop.0+0x1f/0x180
[ 36.597328] ? up_write+0x3ac/0x460
[ 36.598026] ? up_write+0x3ac/0x460
[ 36.598725] kasan_report.cold+0x7f/0x11b
[ 36.599530] ? up_write+0x3ac/0x460
[ 36.600252] up_write+0x3ac/0x460
[ 36.600926] css_free_rwork_fn+0xa28/0xf40
[ 36.601753] process_one_work+0xa30/0x1710
[ 36.602578] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.603483] ? rwlock_bug.part.0+0x90/0x90
[ 36.604311] ? _raw_spin_lock_irq+0x41/0x50
[ 36.605147] worker_thread+0x62a/0x13e0
[ 36.605924] ? process_one_work+0x1710/0x1710
[ 36.606790] kthread+0x40c/0x500
[ 36.607447] ? set_kthread_struct+0x130/0x130
[ 36.608331] ret_from_fork+0x22/0x30
[ 36.609057]
[ 36.609501]
[ 36.609813] Allocated by task 281:
[ 36.610488] kasan_save_stack+0x1e/0x40
[ 36.611256] __kasan_kmalloc+0x81/0xa0
[ 36.612020] kernfs_create_root+0x4c/0x410
[ 36.612829] cgroup_setup_root+0x346/0xb60
[ 36.613643] cgroup1_get_tree+0xc1b/0x1370
[ 36.614454] vfs_get_tree+0x8e/0x2f0
[ 36.615169] path_mount+0x131b/0x1f80
[ 36.615909] __x64_sys_mount+0x27e/0x300
[ 36.616688] do_syscall_64+0x3b/0x90
[ 36.617400] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.618393]
[ 36.618702] Freed by task 31:
[ 36.619293] kasan_save_stack+0x1e/0x40
[ 36.620076] kasan_set_track+0x21/0x30
[ 36.620824] kasan_set_free_info+0x20/0x30
[ 36.621632] __kasan_slab_free+0x108/0x170
[ 36.622445] kfree+0xc5/0x5a0
[ 36.623041] kernfs_put.part.0+0x334/0x540
[ 36.623860] kernfs_put+0x42/0x50
[ 36.624520] __kernfs_remove+0x7ce/0xb00
[ 36.625305] kernfs_destroy_root+0x89/0xb0
[ 36.626109] css_free_rwork_fn+0xa28/0xf40
[ 36.626917] process_one_work+0xa30/0x1710
[ 36.627745] worker_thread+0x62a/0x13e0
[ 36.628506] kthread+0x40c/0x500
[ 36.629149] ret_from_fork+0x22/0x30
[ 36.629861]
[ 36.630170] The buggy address belongs to the object at ffff88800e762000
[ 36.630170] which belongs to the cache kmalloc-512 of size 512
[ 36.632551] The buggy address is located 320 bytes inside of
[ 36.632551] 512-byte region [ffff88800e762000, ffff88800e762200)
[ 36.634778] The buggy address belongs to the page:
[ 36.635710] page:00000000d392ccbf refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe760
[ 36.637497] head:00000000d392ccbf order:2 compound_mapcount:0 compound_pincount:0
[ 36.638951] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.640107] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 36.641611] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.643108] page dumped because: kasan: bad access detected
[ 36.644206]
[ 36.644520] Memory state around the buggy address:
[ 36.645451] ffff88800e762000: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.646830] ffff88800e762080: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.648231] >ffff88800e762100: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.649609] ^
[ 36.650634] ffff88800e762180: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.652021] ffff88800e762200: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.653397] ==================================================================
[ 36.684190] cgroup: Unknown subsys name 'hugetlb'
[ 36.686700] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:27:33 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=00007fde80f03e10 CR3=000000000e898000 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 4117846000000000
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=0000000000000030 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888009aa7648
R8 =0000000000000000 R9 =0000000000000030 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000030 R13=0000000000000030 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=00007fde80ede180 CR3=000000000e950000 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=00001f80
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 2c2c2c2c2c2c2c2c 2c2c2c2c2c2c2c2c
YMM01=0000000000000000 0000000000000000 000000ff00000000 0000000000000000
YMM02=0000000000000000 0000000000000000 000000ff00000000 0000000000000000
YMM03=0000000000000000 0000000000000000 375afdebbf381c81 00000000000e5cd8
YMM04=0000000000000000 0000000000000000 a555c114367f6ecc 000000000012c8d0
YMM05=0000000000000000 0000000000000000 d3fdd5f48436fbd7 00000000000aeac8
YMM06=0000000000000000 0000000000000000 3faf093525532c7d 00000000000ae980
YMM07=0000000000000000 0000000000000000 a1fcdcf819d7e1e5 00000000000ae728
YMM08=0000000000000000 0000000000000000 6578450065725074 7261745363657845
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