Warning: Permanently added '[localhost]:56665' (ECDSA) to the list of known hosts.
2021/12/06 11:25:58 fuzzer started
2021/12/06 11:25:58 dialing manager at localhost:35719
2021/12/06 11:25:58 checking machine...
2021/12/06 11:25:58 checking revisions...
syzkaller login: [ 34.825164] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:25:58 testing simple program...
[ 34.857064] cgroup: Unknown subsys name 'net'
[ 34.858072] cgroup: Unknown subsys name 'net_prio'
[ 34.860128] cgroup: Unknown subsys name 'devices'
[ 34.861745] cgroup: Unknown subsys name 'blkio'
[ 34.882177]
[ 34.882463] =========================
[ 34.883072] WARNING: held lock freed!
[ 34.883691] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.884461] -------------------------
[ 34.885555] kworker/1:0/18 is freeing memory ffff888017c89800-ffff888017c899ff, with a lock still held there!
[ 34.887343] ffff888017c89948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.888468] 3 locks held by kworker/1:0/18:
[ 34.888924] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.890036] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.891297] #2: ffff888017c89948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.892315]
[ 34.892315] stack backtrace:
[ 34.892784] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.893602] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.894819] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.895392] Call Trace:
[ 34.895685]
[ 34.895921] dump_stack_lvl+0x8b/0xb3
[ 34.896336] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.896906] ? kernfs_put.part.0+0x334/0x540
[ 34.897378] kfree+0xb3/0x5a0
[ 34.897710] ? kmem_cache_free+0xce/0x640
[ 34.898147] kernfs_put.part.0+0x334/0x540
[ 34.898607] kernfs_put+0x42/0x50
[ 34.898989] __kernfs_remove+0x7ce/0xb00
[ 34.899416] ? lock_is_held_type+0xd7/0x130
[ 34.899903] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.900470] ? down_write+0xde/0x150
[ 34.900860] ? down_write_killable_nested+0x180/0x180
[ 34.901418] kernfs_destroy_root+0x89/0xb0
[ 34.901874] css_free_rwork_fn+0xa28/0xf40
[ 34.902322] process_one_work+0xa30/0x1710
[ 34.902775] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.903271] ? rwlock_bug.part.0+0x90/0x90
[ 34.903735] ? _raw_spin_lock_irq+0x41/0x50
[ 34.904190] worker_thread+0x62a/0x13e0
[ 34.904610] ? process_one_work+0x1710/0x1710
[ 34.905094] kthread+0x40c/0x500
[ 34.905453] ? set_kthread_struct+0x130/0x130
[ 34.905930] ret_from_fork+0x22/0x30
[ 34.906337]
[ 34.906627] ==================================================================
[ 34.907413] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.908045] Read of size 8 at addr ffff888017c89940 by task kworker/1:0/18
[ 34.908788]
[ 34.908957] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.909808] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.911017] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.911597] Call Trace:
[ 34.911876]
[ 34.912110] dump_stack_lvl+0x8b/0xb3
[ 34.912520] print_address_description.constprop.0+0x1f/0x180
[ 34.913155] ? up_write+0x3ac/0x460
[ 34.913541] ? up_write+0x3ac/0x460
[ 34.913941] kasan_report.cold+0x7f/0x11b
[ 34.914384] ? up_write+0x3ac/0x460
[ 34.914768] up_write+0x3ac/0x460
[ 34.915137] css_free_rwork_fn+0xa28/0xf40
[ 34.915602] process_one_work+0xa30/0x1710
[ 34.916052] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.916550] ? rwlock_bug.part.0+0x90/0x90
[ 34.917000] ? _raw_spin_lock_irq+0x41/0x50
[ 34.917462] worker_thread+0x62a/0x13e0
[ 34.917900] ? process_one_work+0x1710/0x1710
[ 34.918372] kthread+0x40c/0x500
[ 34.918728] ? set_kthread_struct+0x130/0x130
[ 34.919209] ret_from_fork+0x22/0x30
[ 34.919621]
[ 34.919869]
[ 34.920042] Allocated by task 283:
[ 34.920415] kasan_save_stack+0x1e/0x40
[ 34.920843] __kasan_kmalloc+0x81/0xa0
[ 34.921256] kernfs_create_root+0x4c/0x410
[ 34.921700] cgroup_setup_root+0x346/0xb60
[ 34.922156] cgroup1_get_tree+0xc1b/0x1370
[ 34.922607] vfs_get_tree+0x8e/0x2f0
[ 34.923007] path_mount+0x131b/0x1f80
[ 34.923413] __x64_sys_mount+0x27e/0x300
[ 34.923866] do_syscall_64+0x3b/0x90
[ 34.924261] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.924805]
[ 34.924978] Freed by task 18:
[ 34.925306] kasan_save_stack+0x1e/0x40
[ 34.925733] kasan_set_track+0x21/0x30
[ 34.926159] kasan_set_free_info+0x20/0x30
[ 34.926599] __kasan_slab_free+0x108/0x170
[ 34.927045] kfree+0xc5/0x5a0
[ 34.927373] kernfs_put.part.0+0x334/0x540
[ 34.927836] kernfs_put+0x42/0x50
[ 34.928197] __kernfs_remove+0x7ce/0xb00
[ 34.928625] kernfs_destroy_root+0x89/0xb0
[ 34.929072] css_free_rwork_fn+0xa28/0xf40
[ 34.929522] process_one_work+0xa30/0x1710
[ 34.929971] worker_thread+0x62a/0x13e0
[ 34.930395] kthread+0x40c/0x500
[ 34.930748] ret_from_fork+0x22/0x30
[ 34.931135]
[ 34.931302] The buggy address belongs to the object at ffff888017c89800
[ 34.931302] which belongs to the cache kmalloc-512 of size 512
[ 34.932637] The buggy address is located 320 bytes inside of
[ 34.932637] 512-byte region [ffff888017c89800, ffff888017c89a00)
[ 34.933848] The buggy address belongs to the page:
[ 34.934336] page:000000007bcad330 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17c88
[ 34.935286] head:000000007bcad330 order:2 compound_mapcount:0 compound_pincount:0
[ 34.936054] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.936657] raw: 0100000000010200 ffffea000039f200 dead000000000002 ffff888007841c80
[ 34.937445] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 34.938234] page dumped because: kasan: bad access detected
[ 34.938795]
[ 34.938968] Memory state around the buggy address:
[ 34.939459] ffff888017c89800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.940201] ffff888017c89880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.940934] >ffff888017c89900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.941661] ^
[ 34.942205] ffff888017c89980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.942924] ffff888017c89a00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.943664] ==================================================================
[ 34.980918] cgroup: Unknown subsys name 'hugetlb'
[ 34.982195] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
[ 44.796458] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[ 44.878779] audit: type=1400 audit(1638789968.919:6): avc: denied { execmem } for pid=286 comm="syz-executor.0" scontext=system_u:system_r:kernel_t:s0 tcontext=system_u:system_r:kernel_t:s0 tclass=process permissive=1
VM DIAGNOSIS:
11:25:59 Registers:
info registers vcpu 0
RAX=ffff88800812f8e0 RBX=0000000010000000 RCX=0000000000000001 RDX=0000000000000004
RSI=ffff88800805b4f4 RDI=ffff88800812f8e8 RBP=ffffffff8735e960 RSP=ffff88800812f7b0
R8 =0000000000000001 R9 =ffff88800812f8f3 R10=ffffed1001025f1e R11=0000000000000001
R12=ffff88800812f8e0 R13=0000000000000001 R14=0000000000000005 R15=ffff88800805b4e0
RIP=ffffffff8405b312 RFL=00000202 [-------] 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 00007f54fd1f9900 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=00005567eb898cd0 CR3=0000000009230000 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 0000ff000000ff00
YMM02=0000000000000000 0000000000000000 0000000000000021 0000000000000074
YMM03=0000000000000000 0000000000000000 79732f6563696c73 2e6d65747379732f
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 69642f7665642f20 302e312d6174612d
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000021 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=000000000000006b RBX=00000000000003f8 RCX=0000000000000000 RDX=00000000000003f8
RSI=ffffffff823640e1 RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f648
R8 =0000000000000000 R9 =000000000000006b R10=ffffffff82365d23 R11=000000000000000a
R12=000000000000006b R13=000000000000006b 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=00007ffd553c6000 CR3=0000000009930000 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 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