Warning: Permanently added '[localhost]:64480' (ECDSA) to the list of known hosts.
2021/12/06 11:25:10 fuzzer started
2021/12/06 11:25:10 dialing manager at localhost:35719
2021/12/06 11:25:10 checking machine...
2021/12/06 11:25:10 checking revisions...
syzkaller login: [ 35.942520] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:25:11 testing simple program...
[ 35.987072] cgroup: Unknown subsys name 'net'
[ 35.987886] cgroup: Unknown subsys name 'net_prio'
[ 35.990035] cgroup: Unknown subsys name 'devices'
[ 35.990835] cgroup: Unknown subsys name 'blkio'
[ 36.026738]
[ 36.027024] =========================
[ 36.027503] WARNING: held lock freed!
[ 36.027968] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.028554] -------------------------
[ 36.028997] kworker/0:2/48 is freeing memory ffff88800e6c1800-ffff88800e6c19ff, with a lock still held there!
[ 36.030210] ffff88800e6c1948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.031293] 3 locks held by kworker/0:2/48:
[ 36.035883] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.037169] #1: ffff88800c037da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.038615] #2: ffff88800e6c1948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.039793]
[ 36.039793] stack backtrace:
[ 36.040333] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.041279] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.042651] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.043274] Call Trace:
[ 36.043603]
[ 36.043863] dump_stack_lvl+0x8b/0xb3
[ 36.044325] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.044972] ? kernfs_put.part.0+0x334/0x540
[ 36.045510] kfree+0xb3/0x5a0
[ 36.045869] ? kmem_cache_free+0xce/0x640
[ 36.046353] kernfs_put.part.0+0x334/0x540
[ 36.046824] kernfs_put+0x42/0x50
[ 36.047227] __kernfs_remove+0x7ce/0xb00
[ 36.051734] ? lock_is_held_type+0xd7/0x130
[ 36.052267] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.052904] ? down_write+0xde/0x150
[ 36.053354] ? down_write_killable_nested+0x180/0x180
[ 36.053969] kernfs_destroy_root+0x89/0xb0
[ 36.054454] css_free_rwork_fn+0xa28/0xf40
[ 36.054937] process_one_work+0xa30/0x1710
[ 36.059586] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.060177] ? rwlock_bug.part.0+0x90/0x90
[ 36.060697] ? _raw_spin_lock_irq+0x41/0x50
[ 36.061222] worker_thread+0x62a/0x13e0
[ 36.061703] ? process_one_work+0x1710/0x1710
[ 36.062237] kthread+0x40c/0x500
[ 36.062636] ? set_kthread_struct+0x130/0x130
[ 36.063158] ret_from_fork+0x22/0x30
[ 36.063648]
[ 36.064004] ==================================================================
[ 36.064854] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.065566] Read of size 8 at addr ffff88800e6c1940 by task kworker/0:2/48
[ 36.066396]
[ 36.066599] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.071661] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.073010] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.073662] Call Trace:
[ 36.073967]
[ 36.074229] dump_stack_lvl+0x8b/0xb3
[ 36.074689] print_address_description.constprop.0+0x1f/0x180
[ 36.075431] ? up_write+0x3ac/0x460
[ 36.075879] ? up_write+0x3ac/0x460
[ 36.076322] kasan_report.cold+0x7f/0x11b
[ 36.076826] ? up_write+0x3ac/0x460
[ 36.077266] up_write+0x3ac/0x460
[ 36.077687] css_free_rwork_fn+0xa28/0xf40
[ 36.078198] process_one_work+0xa30/0x1710
[ 36.078721] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.079292] ? rwlock_bug.part.0+0x90/0x90
[ 36.081697] ? _raw_spin_lock_irq+0x41/0x50
[ 36.082230] worker_thread+0x62a/0x13e0
[ 36.082728] ? process_one_work+0x1710/0x1710
[ 36.083276] kthread+0x40c/0x500
[ 36.083707] ? set_kthread_struct+0x130/0x130
[ 36.084248] ret_from_fork+0x22/0x30
[ 36.084699]
[ 36.084976]
[ 36.085174] Allocated by task 280:
[ 36.085590] kasan_save_stack+0x1e/0x40
[ 36.086041] __kasan_kmalloc+0x81/0xa0
[ 36.086477] kernfs_create_root+0x4c/0x410
[ 36.086949] cgroup_setup_root+0x346/0xb60
[ 36.089357] cgroup1_get_tree+0xc1b/0x1370
[ 36.089840] vfs_get_tree+0x8e/0x2f0
[ 36.090260] path_mount+0x131b/0x1f80
[ 36.090690] __x64_sys_mount+0x27e/0x300
[ 36.091145] do_syscall_64+0x3b/0x90
[ 36.093099] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.093683]
[ 36.093864] Freed by task 48:
[ 36.094207] kasan_save_stack+0x1e/0x40
[ 36.094651] kasan_set_track+0x21/0x30
[ 36.095084] kasan_set_free_info+0x20/0x30
[ 36.097286] __kasan_slab_free+0x108/0x170
[ 36.097764] kfree+0xc5/0x5a0
[ 36.098112] kernfs_put.part.0+0x334/0x540
[ 36.098588] kernfs_put+0x42/0x50
[ 36.098973] __kernfs_remove+0x7ce/0xb00
[ 36.103082] kernfs_destroy_root+0x89/0xb0
[ 36.103579] css_free_rwork_fn+0xa28/0xf40
[ 36.104055] process_one_work+0xa30/0x1710
[ 36.104528] worker_thread+0x62a/0x13e0
[ 36.104975] kthread+0x40c/0x500
[ 36.105353] ret_from_fork+0x22/0x30
[ 36.105769]
[ 36.105950] The buggy address belongs to the object at ffff88800e6c1800
[ 36.105950] which belongs to the cache kmalloc-512 of size 512
[ 36.107382] The buggy address is located 320 bytes inside of
[ 36.107382] 512-byte region [ffff88800e6c1800, ffff88800e6c1a00)
[ 36.113098] The buggy address belongs to the page:
[ 36.113639] page:00000000593653de refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe6c0
[ 36.114672] head:00000000593653de order:2 compound_mapcount:0 compound_pincount:0
[ 36.119583] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.120234] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 36.121093] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.121949] page dumped because: kasan: bad access detected
[ 36.122556]
[ 36.122736] Memory state around the buggy address:
[ 36.123258] ffff88800e6c1800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.128101] ffff88800e6c1880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.128912] >ffff88800e6c1900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.129695] ^
[ 36.130295] ffff88800e6c1980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.131148] ffff88800e6c1a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.132036] ==================================================================
[ 36.182937] cgroup: Unknown subsys name 'hugetlb'
[ 36.183721] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:25:11 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800c0376f8
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=00007f63111e8d40 CR3=000000001af3a000 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=ffff88800d2c3580
RSI=ffffffff813865f9 RDI=0000000000000003 RBP=0000000000000003 RSP=ffff8880170af930
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 000055555644a400 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=00007f6311220a70 CR3=000000001af3a000 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