Warning: Permanently added '[localhost]:30590' (ECDSA) to the list of known hosts.
2021/12/06 11:33:21 fuzzer started
2021/12/06 11:33:21 dialing manager at localhost:35719
2021/12/06 11:33:21 checking machine...
2021/12/06 11:33:21 checking revisions...
syzkaller login: [ 34.861767] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:33:21 testing simple program...
[ 34.902671] cgroup: Unknown subsys name 'net'
[ 34.904188] cgroup: Unknown subsys name 'net_prio'
[ 34.905976] cgroup: Unknown subsys name 'devices'
[ 34.907257] cgroup: Unknown subsys name 'blkio'
[ 34.934711]
[ 34.935123] =========================
[ 34.935988] WARNING: held lock freed!
[ 34.936846] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.938589] -------------------------
[ 34.939801] kworker/1:1/31 is freeing memory ffff88801d1b7800-ffff88801d1b79ff, with a lock still held there!
[ 34.942048] ffff88801d1b7948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.944069] 3 locks held by kworker/1:1/31:
[ 34.945039] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.947381] #1: ffff88800830fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.949791] #2: ffff88801d1b7948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.951729]
[ 34.951729] stack backtrace:
[ 34.952609] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.954143] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.956404] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.957461] Call Trace:
[ 34.957968]
[ 34.958405] dump_stack_lvl+0x8b/0xb3
[ 34.959163] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.960304] ? kernfs_put.part.0+0x334/0x540
[ 34.961147] kfree+0xb3/0x5a0
[ 34.961743] ? kmem_cache_free+0xce/0x640
[ 34.962536] kernfs_put.part.0+0x334/0x540
[ 34.963349] kernfs_put+0x42/0x50
[ 34.964021] __kernfs_remove+0x7ce/0xb00
[ 34.964799] ? lock_is_held_type+0xd7/0x130
[ 34.965626] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.966628] ? down_write+0xde/0x150
[ 34.967336] ? down_write_killable_nested+0x180/0x180
[ 34.968333] kernfs_destroy_root+0x89/0xb0
[ 34.969140] css_free_rwork_fn+0xa28/0xf40
[ 34.969952] process_one_work+0xa30/0x1710
[ 34.970764] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.971651] ? rwlock_bug.part.0+0x90/0x90
[ 34.972475] ? _raw_spin_lock_irq+0x41/0x50
[ 34.973298] worker_thread+0x62a/0x13e0
[ 34.974056] ? process_one_work+0x1710/0x1710
[ 34.974909] kthread+0x40c/0x500
[ 34.975544] ? set_kthread_struct+0x130/0x130
[ 34.976397] ret_from_fork+0x22/0x30
[ 34.977106]
[ 34.977600] ==================================================================
[ 34.978962] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.980090] Read of size 8 at addr ffff88801d1b7940 by task kworker/1:1/31
[ 34.981401]
[ 34.981709] CPU: 1 PID: 31 Comm: kworker/1:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.983176] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.985335] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.986353] Call Trace:
[ 34.986838]
[ 34.987260] dump_stack_lvl+0x8b/0xb3
[ 34.988001] print_address_description.constprop.0+0x1f/0x180
[ 34.989116] ? up_write+0x3ac/0x460
[ 34.989806] ? up_write+0x3ac/0x460
[ 34.990496] kasan_report.cold+0x7f/0x11b
[ 34.991293] ? up_write+0x3ac/0x460
[ 34.991993] up_write+0x3ac/0x460
[ 34.992655] css_free_rwork_fn+0xa28/0xf40
[ 34.993465] process_one_work+0xa30/0x1710
[ 34.994277] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.995171] ? rwlock_bug.part.0+0x90/0x90
[ 34.995997] ? _raw_spin_lock_irq+0x41/0x50
[ 34.996825] worker_thread+0x62a/0x13e0
[ 34.997592] ? process_one_work+0x1710/0x1710
[ 34.998449] kthread+0x40c/0x500
[ 34.999095] ? set_kthread_struct+0x130/0x130
[ 34.999964] ret_from_fork+0x22/0x30
[ 35.000682]
[ 35.001122]
[ 35.001430] Allocated by task 280:
[ 35.002096] kasan_save_stack+0x1e/0x40
[ 35.002858] __kasan_kmalloc+0x81/0xa0
[ 35.003599] kernfs_create_root+0x4c/0x410
[ 35.004412] cgroup_setup_root+0x346/0xb60
[ 35.005220] cgroup1_get_tree+0xc1b/0x1370
[ 35.006038] vfs_get_tree+0x8e/0x2f0
[ 35.006752] path_mount+0x131b/0x1f80
[ 35.007483] __x64_sys_mount+0x27e/0x300
[ 35.008284] do_syscall_64+0x3b/0x90
[ 35.009001] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.009994]
[ 35.010305] Freed by task 31:
[ 35.010890] kasan_save_stack+0x1e/0x40
[ 35.011660] kasan_set_track+0x21/0x30
[ 35.012413] kasan_set_free_info+0x20/0x30
[ 35.013229] __kasan_slab_free+0x108/0x170
[ 35.014041] kfree+0xc5/0x5a0
[ 35.014640] kernfs_put.part.0+0x334/0x540
[ 35.015455] kernfs_put+0x42/0x50
[ 35.016126] __kernfs_remove+0x7ce/0xb00
[ 35.016898] kernfs_destroy_root+0x89/0xb0
[ 35.017707] css_free_rwork_fn+0xa28/0xf40
[ 35.018515] process_one_work+0xa30/0x1710
[ 35.019322] worker_thread+0x62a/0x13e0
[ 35.020086] kthread+0x40c/0x500
[ 35.020734] ret_from_fork+0x22/0x30
[ 35.021443]
[ 35.021751] The buggy address belongs to the object at ffff88801d1b7800
[ 35.021751] which belongs to the cache kmalloc-512 of size 512
[ 35.024114] The buggy address is located 320 bytes inside of
[ 35.024114] 512-byte region [ffff88801d1b7800, ffff88801d1b7a00)
[ 35.026328] The buggy address belongs to the page:
[ 35.027246] page:00000000c22a5087 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x1d1b4
[ 35.029017] head:00000000c22a5087 order:2 compound_mapcount:0 compound_pincount:0
[ 35.030440] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 35.031559] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 35.033053] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 35.034523] page dumped because: kasan: bad access detected
[ 35.035586]
[ 35.035900] Memory state around the buggy address:
[ 35.036821] ffff88801d1b7800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.038192] ffff88801d1b7880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.039566] >ffff88801d1b7900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.040942] ^
[ 35.041959] ffff88801d1b7980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 35.043333] ffff88801d1b7a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 35.044717] ==================================================================
[ 35.078780] cgroup: Unknown subsys name 'hugetlb'
[ 35.081190] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:33:22 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=000056263bbd0230 CR3=000000000e6f4000 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 bfe62e42fefa39ef
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=0000000000000034 RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800830f648
R8 =0000000000000000 R9 =0000000000000034 R10=ffffffff82365d23 R11=000000000000000a
R12=0000000000000034 R13=0000000000000034 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=00007f473a1fad40 CR3=000000000efe0000 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 756f6a2f646d6574 7379732f6e75722f
YMM01=0000000000000000 0000000000000000 00676f6c7379732f 6c616e72756f6a2f
YMM02=0000000000000000 0000000000000000 756f6a2f646d6574 7379732f6e75722f
YMM03=0000000000000000 0000000000000000 006c616e72756f6a 2f646d6574737973
YMM04=0000000000000000 0000000000000000 6c6c615f73757043 0a33093a6465776f
YMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM06=0000000000000000 0000000000000000 206c615f6f697043 0a33093a093a6863
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 726573752f732500 3e69253c00203a5d
YMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM10=0000000000000000 0000000000000000 2020000000002020 2020202020200000
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