Warning: Permanently added '[localhost]:17268' (ECDSA) to the list of known hosts.
2021/12/06 11:21:56 fuzzer started
2021/12/06 11:21:56 dialing manager at localhost:35719
2021/12/06 11:21:56 checking machine...
2021/12/06 11:21:56 checking revisions...
syzkaller login: [ 37.618577] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:21:56 testing simple program...
[ 37.680787] cgroup: Unknown subsys name 'net'
[ 37.681792] cgroup: Unknown subsys name 'net_prio'
[ 37.691517] cgroup: Unknown subsys name 'devices'
[ 37.692920] cgroup: Unknown subsys name 'blkio'
[ 37.735592]
[ 37.735849] =========================
[ 37.736311] WARNING: held lock freed!
[ 37.736817] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 37.737455] -------------------------
[ 37.738017] kworker/0:1/10 is freeing memory ffff88800d82c800-ffff88800d82c9ff, with a lock still held there!
[ 37.739316] ffff88800d82c948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 37.742502] 3 locks held by kworker/0:1/10:
[ 37.743024] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 37.744329] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 37.745815] #2: ffff88800d82c948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 37.747158]
[ 37.747158] stack backtrace:
[ 37.747705] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 37.748716] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 37.750325] Workqueue: cgroup_destroy css_free_rwork_fn
[ 37.751027] Call Trace:
[ 37.751350]
[ 37.751631] dump_stack_lvl+0x8b/0xb3
[ 37.752152] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 37.752815] ? kernfs_put.part.0+0x334/0x540
[ 37.753370] kfree+0xb3/0x5a0
[ 37.753776] ? kmem_cache_free+0xce/0x640
[ 37.755410] kernfs_put.part.0+0x334/0x540
[ 37.756711] kernfs_put+0x42/0x50
[ 37.757784] __kernfs_remove+0x7ce/0xb00
[ 37.759078] ? lock_is_held_type+0xd7/0x130
[ 37.760359] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 37.762007] ? down_write+0xde/0x150
[ 37.763131] ? down_write_killable_nested+0x180/0x180
[ 37.764681] kernfs_destroy_root+0x89/0xb0
[ 37.766033] css_free_rwork_fn+0xa28/0xf40
[ 37.767302] process_one_work+0xa30/0x1710
[ 37.768584] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 37.770065] ? rwlock_bug.part.0+0x90/0x90
[ 37.771311] ? _raw_spin_lock_irq+0x41/0x50
[ 37.772598] worker_thread+0x62a/0x13e0
[ 37.773921] ? process_one_work+0x1710/0x1710
[ 37.775657] kthread+0x40c/0x500
[ 37.776522] ? set_kthread_struct+0x130/0x130
[ 37.777642] ret_from_fork+0x22/0x30
[ 37.778749]
[ 37.779384] ==================================================================
[ 37.781239] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 37.782994] Read of size 8 at addr ffff88800d82c940 by task kworker/0:1/10
[ 37.784724]
[ 37.785125] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 37.787309] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 37.790111] Workqueue: cgroup_destroy css_free_rwork_fn
[ 37.791463] Call Trace:
[ 37.792164]
[ 37.792681] dump_stack_lvl+0x8b/0xb3
[ 37.793636] print_address_description.constprop.0+0x1f/0x180
[ 37.795483] ? up_write+0x3ac/0x460
[ 37.796372] ? up_write+0x3ac/0x460
[ 37.797275] kasan_report.cold+0x7f/0x11b
[ 37.798454] ? up_write+0x3ac/0x460
[ 37.799331] up_write+0x3ac/0x460
[ 37.799987] css_free_rwork_fn+0xa28/0xf40
[ 37.800568] process_one_work+0xa30/0x1710
[ 37.801161] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 37.801758] ? rwlock_bug.part.0+0x90/0x90
[ 37.802339] ? _raw_spin_lock_irq+0x41/0x50
[ 37.802893] worker_thread+0x62a/0x13e0
[ 37.803411] ? process_one_work+0x1710/0x1710
[ 37.803984] kthread+0x40c/0x500
[ 37.804437] ? set_kthread_struct+0x130/0x130
[ 37.805003] ret_from_fork+0x22/0x30
[ 37.805477]
[ 37.805768]
[ 37.806020] Allocated by task 280:
[ 37.806445] kasan_save_stack+0x1e/0x40
[ 37.806944] __kasan_kmalloc+0x81/0xa0
[ 37.807466] kernfs_create_root+0x4c/0x410
[ 37.807993] cgroup_setup_root+0x346/0xb60
[ 37.808521] cgroup1_get_tree+0xc1b/0x1370
[ 37.809086] vfs_get_tree+0x8e/0x2f0
[ 37.809550] path_mount+0x131b/0x1f80
[ 37.810086] __x64_sys_mount+0x27e/0x300
[ 37.810598] do_syscall_64+0x3b/0x90
[ 37.811090] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 37.811710]
[ 37.811914] Freed by task 10:
[ 37.812339] kasan_save_stack+0x1e/0x40
[ 37.812833] kasan_set_track+0x21/0x30
[ 37.813320] kasan_set_free_info+0x20/0x30
[ 37.813873] __kasan_slab_free+0x108/0x170
[ 37.814411] kfree+0xc5/0x5a0
[ 37.814793] kernfs_put.part.0+0x334/0x540
[ 37.815331] kernfs_put+0x42/0x50
[ 37.815760] __kernfs_remove+0x7ce/0xb00
[ 37.816286] kernfs_destroy_root+0x89/0xb0
[ 37.816801] css_free_rwork_fn+0xa28/0xf40
[ 37.817349] process_one_work+0xa30/0x1710
[ 37.817874] worker_thread+0x62a/0x13e0
[ 37.818364] kthread+0x40c/0x500
[ 37.818787] ret_from_fork+0x22/0x30
[ 37.819250]
[ 37.819451] The buggy address belongs to the object at ffff88800d82c800
[ 37.819451] which belongs to the cache kmalloc-512 of size 512
[ 37.820982] The buggy address is located 320 bytes inside of
[ 37.820982] 512-byte region [ffff88800d82c800, ffff88800d82ca00)
[ 37.822440] The buggy address belongs to the page:
[ 37.823062] page:000000005aaae10a refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd82c
[ 37.824230] head:000000005aaae10a order:2 compound_mapcount:0 compound_pincount:0
[ 37.825153] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 37.825887] raw: 0100000000010200 ffffea00003ea500 dead000000000002 ffff888007841c80
[ 37.826817] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 37.827749] page dumped because: kasan: bad access detected
[ 37.828475]
[ 37.828676] Memory state around the buggy address:
[ 37.829275] ffff88800d82c800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.830194] ffff88800d82c880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.831055] >ffff88800d82c900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.831783] ^
[ 37.832384] ffff88800d82c980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.833223] ffff88800d82ca00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 37.834050] ==================================================================
[ 37.886370] cgroup: Unknown subsys name 'hugetlb'
[ 37.887241] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:21:57 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff888008197598
R8 =0000000000000083 R9 =0000000000000072 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=00007ffd9ca7dd18 CR3=000000000ea4e000 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=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 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
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=0000000000000000 RBX=ffff88806ce3ed20 RCX=0000000000000000 RDX=ffff88800eee3580
RSI=ffffffff813865f9 RDI=0000000000000003 RBP=0000000000000003 RSP=ffff88801817f930
R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8138661f R11=0000000000000000
R12=ffffed100d9c7da5 R13=0000000000000000 R14=ffff88806ce3ed28 R15=0000000000000001
RIP=ffffffff813865fb RFL=00000293 [--S-A-C] 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 0000555555732400 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=000055c403afcf70 CR3=000000000ea4e000 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 0000000000000000 0000000000000000
YMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM04=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
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