Warning: Permanently added '[localhost]:14938' (ECDSA) to the list of known hosts.
2021/12/06 11:30:02 fuzzer started
2021/12/06 11:30:02 dialing manager at localhost:35719
2021/12/06 11:30:02 checking machine...
2021/12/06 11:30:02 checking revisions...
syzkaller login: [ 36.884361] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:30:02 testing simple program...
[ 36.931850] cgroup: Unknown subsys name 'net'
[ 36.934137] cgroup: Unknown subsys name 'net_prio'
[ 36.935435] cgroup: Unknown subsys name 'devices'
[ 36.936706] cgroup: Unknown subsys name 'blkio'
[ 36.956665]
[ 36.957024] =========================
[ 36.957764] WARNING: held lock freed!
[ 36.958490] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.959594] -------------------------
[ 36.960727] kworker/1:0/18 is freeing memory ffff88800ee82400-ffff88800ee825ff, with a lock still held there!
[ 36.963012] ffff88800ee82548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.964775] 3 locks held by kworker/1:0/18:
[ 36.965636] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.967676] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.969986] #2: ffff88800ee82548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.971796]
[ 36.971796] stack backtrace:
[ 36.972656] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.974184] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.976410] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.977486] Call Trace:
[ 36.977988]
[ 36.978430] dump_stack_lvl+0x8b/0xb3
[ 36.979186] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.980234] ? kernfs_put.part.0+0x334/0x540
[ 36.981108] kfree+0xb3/0x5a0
[ 36.981725] ? kmem_cache_free+0xce/0x640
[ 36.982548] kernfs_put.part.0+0x334/0x540
[ 36.983390] kernfs_put+0x42/0x50
[ 36.984071] __kernfs_remove+0x7ce/0xb00
[ 36.984876] ? lock_is_held_type+0xd7/0x130
[ 36.985734] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.986758] ? down_write+0xde/0x150
[ 36.987485] ? down_write_killable_nested+0x180/0x180
[ 36.988494] kernfs_destroy_root+0x89/0xb0
[ 36.989337] css_free_rwork_fn+0xa28/0xf40
[ 36.990169] process_one_work+0xa30/0x1710
[ 36.991000] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.991912] ? rwlock_bug.part.0+0x90/0x90
[ 36.992741] ? _raw_spin_lock_irq+0x41/0x50
[ 36.993595] worker_thread+0x62a/0x13e0
[ 36.994378] ? process_one_work+0x1710/0x1710
[ 36.995255] kthread+0x40c/0x500
[ 36.995915] ? set_kthread_struct+0x130/0x130
[ 36.996789] ret_from_fork+0x22/0x30
[ 36.997539]
[ 36.998052] ==================================================================
[ 36.999469] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 37.000625] Read of size 8 at addr ffff88800ee82540 by task kworker/1:0/18
[ 37.001982]
[ 37.002299] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 37.003825] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 37.006063] Workqueue: cgroup_destroy css_free_rwork_fn
[ 37.007108] Call Trace:
[ 37.007606]
[ 37.008041] dump_stack_lvl+0x8b/0xb3
[ 37.008788] print_address_description.constprop.0+0x1f/0x180
[ 37.009938] ? up_write+0x3ac/0x460
[ 37.010650] ? up_write+0x3ac/0x460
[ 37.011358] kasan_report.cold+0x7f/0x11b
[ 37.012173] ? up_write+0x3ac/0x460
[ 37.012907] up_write+0x3ac/0x460
[ 37.013608] css_free_rwork_fn+0xa28/0xf40
[ 37.014440] process_one_work+0xa30/0x1710
[ 37.015272] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 37.016184] ? rwlock_bug.part.0+0x90/0x90
[ 37.017011] ? _raw_spin_lock_irq+0x41/0x50
[ 37.017867] worker_thread+0x62a/0x13e0
[ 37.018650] ? process_one_work+0x1710/0x1710
[ 37.019528] kthread+0x40c/0x500
[ 37.020190] ? set_kthread_struct+0x130/0x130
[ 37.021070] ret_from_fork+0x22/0x30
[ 37.021813]
[ 37.022266]
[ 37.022582] Allocated by task 281:
[ 37.023262] kasan_save_stack+0x1e/0x40
[ 37.024039] __kasan_kmalloc+0x81/0xa0
[ 37.024796] kernfs_create_root+0x4c/0x410
[ 37.025637] cgroup_setup_root+0x346/0xb60
[ 37.026464] cgroup1_get_tree+0xc1b/0x1370
[ 37.027293] vfs_get_tree+0x8e/0x2f0
[ 37.028021] path_mount+0x131b/0x1f80
[ 37.028766] __x64_sys_mount+0x27e/0x300
[ 37.029570] do_syscall_64+0x3b/0x90
[ 37.030294] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 37.031301]
[ 37.031616] Freed by task 18:
[ 37.032218] kasan_save_stack+0x1e/0x40
[ 37.032994] kasan_set_track+0x21/0x30
[ 37.033768] kasan_set_free_info+0x20/0x30
[ 37.034596] __kasan_slab_free+0x108/0x170
[ 37.035424] kfree+0xc5/0x5a0
[ 37.036033] kernfs_put.part.0+0x334/0x540
[ 37.036860] kernfs_put+0x42/0x50
[ 37.037539] __kernfs_remove+0x7ce/0xb00
[ 37.038326] kernfs_destroy_root+0x89/0xb0
[ 37.039149] css_free_rwork_fn+0xa28/0xf40
[ 37.039974] process_one_work+0xa30/0x1710
[ 37.040800] worker_thread+0x62a/0x13e0
[ 37.041590] kthread+0x40c/0x500
[ 37.042248] ret_from_fork+0x22/0x30
[ 37.042974]
[ 37.043293] Last potentially related work creation:
[ 37.044254] kasan_save_stack+0x1e/0x40
[ 37.045030] __kasan_record_aux_stack+0x97/0xa0
[ 37.045957] call_rcu+0x82/0xa30
[ 37.046620] __key_link+0xea/0x180
[ 37.047318] __key_instantiate_and_link+0x231/0x3e0
[ 37.048289] key_create_or_update+0x704/0xc40
[ 37.049171] __do_sys_add_key+0x215/0x430
[ 37.049981] do_syscall_64+0x3b/0x90
[ 37.050704] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 37.051710]
[ 37.052025] The buggy address belongs to the object at ffff88800ee82400
[ 37.052025] which belongs to the cache kmalloc-512 of size 512
[ 37.054457] The buggy address is located 320 bytes inside of
[ 37.054457] 512-byte region [ffff88800ee82400, ffff88800ee82600)
[ 37.056722] The buggy address belongs to the page:
[ 37.057672] page:00000000bbc22a4c refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xee80
[ 37.059462] head:00000000bbc22a4c order:2 compound_mapcount:0 compound_pincount:0
[ 37.060921] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 37.062086] raw: 0100000000010200 ffffea00003b9300 dead000000000002 ffff888007841c80
[ 37.063604] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 37.065103] page dumped because: kasan: bad access detected
[ 37.066202]
[ 37.066515] Memory state around the buggy address:
[ 37.067457] ffff88800ee82400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.068863] ffff88800ee82480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.070291] >ffff88800ee82500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.071692] ^
[ 37.072737] ffff88800ee82580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 37.074158] ffff88800ee82600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 37.075563] ==================================================================
[ 37.115219] cgroup: Unknown subsys name 'hugetlb'
[ 37.126265] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:30:03 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=0000562f156f8ec0 CR3=0000000009424000 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 7465677261742e79 636e656772656d65
YMM02=0000000000000000 0000000000000000 ffffffffffffffff ffffffffffffffff
YMM03=0000000000000000 0000000000000000 000000ff00000000 0000000000000000
YMM04=0000000000000000 0000000000000000 2f2f2f2f2f2f2f2f 2f2f2f2f2f2f2f2f
YMM05=0000000000000000 0000000000000000 2d312e31303a3030 3a303030302d6963
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6665646362613938 3736353433323130
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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f5f0
R8 =0000000000000071 R9 =0000000000000020 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 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=00007f77077d6eb0 CR3=000000000d4ac000 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