Warning: Permanently added '[localhost]:24746' (ECDSA) to the list of known hosts.
2021/12/06 11:36:19 fuzzer started
2021/12/06 11:36:19 dialing manager at localhost:35719
2021/12/06 11:36:19 checking machine...
2021/12/06 11:36:19 checking revisions...
syzkaller login: [ 34.381201] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:36:19 testing simple program...
[ 34.416716] cgroup: Unknown subsys name 'net'
[ 34.417660] cgroup: Unknown subsys name 'net_prio'
[ 34.420072] cgroup: Unknown subsys name 'devices'
[ 34.421459] cgroup: Unknown subsys name 'blkio'
[ 34.439966]
[ 34.440522] =========================
[ 34.441003] WARNING: held lock freed!
[ 34.441505] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 34.442102] -------------------------
[ 34.442544] kworker/1:0/18 is freeing memory ffff88800e86b800-ffff88800e86b9ff, with a lock still held there!
[ 34.443702] ffff88800e86b948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.444751] 3 locks held by kworker/1:0/18:
[ 34.445433] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 34.447323] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 34.448871] #2: ffff88800e86b948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 34.450035]
[ 34.450035] stack backtrace:
[ 34.450563] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.451407] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.452836] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.453466] Call Trace:
[ 34.453737]
[ 34.453972] dump_stack_lvl+0x8b/0xb3
[ 34.454372] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 34.454941] ? kernfs_put.part.0+0x334/0x540
[ 34.455455] kfree+0xb3/0x5a0
[ 34.455891] ? kmem_cache_free+0xce/0x640
[ 34.456475] kernfs_put.part.0+0x334/0x540
[ 34.457103] kernfs_put+0x42/0x50
[ 34.457583] __kernfs_remove+0x7ce/0xb00
[ 34.458138] ? lock_is_held_type+0xd7/0x130
[ 34.458741] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 34.459473] ? down_write+0xde/0x150
[ 34.459990] ? down_write_killable_nested+0x180/0x180
[ 34.460702] kernfs_destroy_root+0x89/0xb0
[ 34.461308] css_free_rwork_fn+0xa28/0xf40
[ 34.461894] process_one_work+0xa30/0x1710
[ 34.462483] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.463116] ? rwlock_bug.part.0+0x90/0x90
[ 34.463704] ? _raw_spin_lock_irq+0x41/0x50
[ 34.464311] worker_thread+0x62a/0x13e0
[ 34.464866] ? process_one_work+0x1710/0x1710
[ 34.465495] kthread+0x40c/0x500
[ 34.465949] ? set_kthread_struct+0x130/0x130
[ 34.466562] ret_from_fork+0x22/0x30
[ 34.467087]
[ 34.467525] ==================================================================
[ 34.468521] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 34.469385] Read of size 8 at addr ffff88800e86b940 by task kworker/1:0/18
[ 34.470323]
[ 34.470554] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 34.471569] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 34.472976] Workqueue: cgroup_destroy css_free_rwork_fn
[ 34.473697] Call Trace:
[ 34.474014]
[ 34.474289] dump_stack_lvl+0x8b/0xb3
[ 34.474766] print_address_description.constprop.0+0x1f/0x180
[ 34.475484] ? up_write+0x3ac/0x460
[ 34.475943] ? up_write+0x3ac/0x460
[ 34.476389] kasan_report.cold+0x7f/0x11b
[ 34.476957] ? up_write+0x3ac/0x460
[ 34.477488] up_write+0x3ac/0x460
[ 34.478146] css_free_rwork_fn+0xa28/0xf40
[ 34.478725] process_one_work+0xa30/0x1710
[ 34.479291] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 34.479933] ? rwlock_bug.part.0+0x90/0x90
[ 34.480518] ? _raw_spin_lock_irq+0x41/0x50
[ 34.481108] worker_thread+0x62a/0x13e0
[ 34.481657] ? process_one_work+0x1710/0x1710
[ 34.482278] kthread+0x40c/0x500
[ 34.482742] ? set_kthread_struct+0x130/0x130
[ 34.483459] ret_from_fork+0x22/0x30
[ 34.483973]
[ 34.484281]
[ 34.484510] Allocated by task 282:
[ 34.484985] kasan_save_stack+0x1e/0x40
[ 34.485558] __kasan_kmalloc+0x81/0xa0
[ 34.486085] kernfs_create_root+0x4c/0x410
[ 34.486662] cgroup_setup_root+0x346/0xb60
[ 34.487244] cgroup1_get_tree+0xc1b/0x1370
[ 34.487823] vfs_get_tree+0x8e/0x2f0
[ 34.488331] path_mount+0x131b/0x1f80
[ 34.488860] __x64_sys_mount+0x27e/0x300
[ 34.489429] do_syscall_64+0x3b/0x90
[ 34.489926] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 34.490623]
[ 34.490841] Freed by task 18:
[ 34.491244] kasan_save_stack+0x1e/0x40
[ 34.491784] kasan_set_track+0x21/0x30
[ 34.492309] kasan_set_free_info+0x20/0x30
[ 34.492880] __kasan_slab_free+0x108/0x170
[ 34.493478] kfree+0xc5/0x5a0
[ 34.493891] kernfs_put.part.0+0x334/0x540
[ 34.494459] kernfs_put+0x42/0x50
[ 34.494935] __kernfs_remove+0x7ce/0xb00
[ 34.495489] kernfs_destroy_root+0x89/0xb0
[ 34.496057] css_free_rwork_fn+0xa28/0xf40
[ 34.496633] process_one_work+0xa30/0x1710
[ 34.497220] worker_thread+0x62a/0x13e0
[ 34.497748] kthread+0x40c/0x500
[ 34.498191] ret_from_fork+0x22/0x30
[ 34.498671]
[ 34.498878] The buggy address belongs to the object at ffff88800e86b800
[ 34.498878] which belongs to the cache kmalloc-512 of size 512
[ 34.500495] The buggy address is located 320 bytes inside of
[ 34.500495] 512-byte region [ffff88800e86b800, ffff88800e86ba00)
[ 34.501975] The buggy address belongs to the page:
[ 34.502568] page:0000000055fc9ca4 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe868
[ 34.503695] head:0000000055fc9ca4 order:2 compound_mapcount:0 compound_pincount:0
[ 34.504611] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 34.505376] raw: 0100000000010200 dead000000000100 dead000000000122 ffff888007841c80
[ 34.506322] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 34.507259] page dumped because: kasan: bad access detected
[ 34.507931]
[ 34.508131] Memory state around the buggy address:
[ 34.508748] ffff88800e86b800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.509763] ffff88800e86b880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.510720] >ffff88800e86b900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.511658] ^
[ 34.512349] ffff88800e86b980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 34.513338] ffff88800e86ba00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 34.514287] ==================================================================
[ 34.536037] cgroup: Unknown subsys name 'hugetlb'
[ 34.536866] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:36:19 Registers:
info registers vcpu 0
RAX=0000000000000000 RBX=0000000000000000 RCX=0000000000000000 RDX=ffff888015a75040
RSI=0000000000000000 RDI=0000000000000003 RBP=ffff888017117f58 RSP=ffff888017117f08
R8 =0000000000000000 R9 =0000000000000000 R10=ffffffff8149e0c3 R11=0000000000000000
R12=ffff888017117f58 R13=0000000000000000 R14=0000000000000000 R15=0000000000000000
RIP=ffffffff814318be RFL=00000046 [---Z-P-] 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 000000c000030090 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=000000c00069f000 CR3=000000000fb86000 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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f5c8
R8 =0000000000000074 R9 =0000000000000037 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=00007f53fc746148 CR3=000000000fb86000 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 414b1bec5ec267d0
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f741a77f4a89556
YMM04=0000000000000000 0000000000000000 00007f1fe422cb00 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000b12758 000000c00000fc98
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c00002e7c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 00000000004643c6 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c00000d480 000000c000158b00
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c000086600 000000c000054630
YMM14=0000000000000000 0000000000000000 000000c000054690 000000c0002978c0
YMM15=0000000000000000 0000000000000000 000000c0000ae078 000000c0000546c0