Warning: Permanently added '[localhost]:6390' (ECDSA) to the list of known hosts.
2021/12/06 11:35:13 fuzzer started
2021/12/06 11:35:14 dialing manager at localhost:35719
2021/12/06 11:35:14 checking machine...
2021/12/06 11:35:14 checking revisions...
syzkaller login: [ 36.138562] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:35:14 testing simple program...
[ 36.179982] cgroup: Unknown subsys name 'net'
[ 36.181204] cgroup: Unknown subsys name 'net_prio'
[ 36.183752] cgroup: Unknown subsys name 'devices'
[ 36.186481] cgroup: Unknown subsys name 'blkio'
[ 36.210461]
[ 36.210848] =========================
[ 36.211585] WARNING: held lock freed!
[ 36.212290] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.213243] -------------------------
[ 36.214142] kworker/0:1/10 is freeing memory ffff88800e5aa800-ffff88800e5aa9ff, with a lock still held there!
[ 36.217005] ffff88800e5aa948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.218779] 3 locks held by kworker/0:1/10:
[ 36.219643] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.221688] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.224025] #2: ffff88800e5aa948 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.225829]
[ 36.225829] stack backtrace:
[ 36.226670] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.228205] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.230430] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.231513] Call Trace:
[ 36.232013]
[ 36.232450] dump_stack_lvl+0x8b/0xb3
[ 36.233198] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.234253] ? kernfs_put.part.0+0x334/0x540
[ 36.235130] kfree+0xb3/0x5a0
[ 36.235767] ? kmem_cache_free+0xce/0x640
[ 36.236592] kernfs_put.part.0+0x334/0x540
[ 36.237441] kernfs_put+0x42/0x50
[ 36.238120] __kernfs_remove+0x7ce/0xb00
[ 36.238911] ? lock_is_held_type+0xd7/0x130
[ 36.239784] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.240822] ? down_write+0xde/0x150
[ 36.241547] ? down_write_killable_nested+0x180/0x180
[ 36.242575] kernfs_destroy_root+0x89/0xb0
[ 36.243432] css_free_rwork_fn+0xa28/0xf40
[ 36.244251] process_one_work+0xa30/0x1710
[ 36.245091] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.246026] ? rwlock_bug.part.0+0x90/0x90
[ 36.246862] ? _raw_spin_lock_irq+0x41/0x50
[ 36.247736] worker_thread+0x62a/0x13e0
[ 36.248526] ? process_one_work+0x1710/0x1710
[ 36.249397] kthread+0x40c/0x500
[ 36.250069] ? set_kthread_struct+0x130/0x130
[ 36.250927] ret_from_fork+0x22/0x30
[ 36.251669]
[ 36.252207] ==================================================================
[ 36.253604] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.254766] Read of size 8 at addr ffff88800e5aa940 by task kworker/0:1/10
[ 36.256126]
[ 36.256449] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.257979] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.260241] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.261301] Call Trace:
[ 36.261802]
[ 36.262247] dump_stack_lvl+0x8b/0xb3
[ 36.263008] print_address_description.constprop.0+0x1f/0x180
[ 36.264170] ? up_write+0x3ac/0x460
[ 36.264892] ? up_write+0x3ac/0x460
[ 36.265596] kasan_report.cold+0x7f/0x11b
[ 36.266389] ? up_write+0x3ac/0x460
[ 36.267077] up_write+0x3ac/0x460
[ 36.267751] css_free_rwork_fn+0xa28/0xf40
[ 36.268571] process_one_work+0xa30/0x1710
[ 36.269396] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.270296] ? rwlock_bug.part.0+0x90/0x90
[ 36.271110] ? _raw_spin_lock_irq+0x41/0x50
[ 36.271961] worker_thread+0x62a/0x13e0
[ 36.272735] ? process_one_work+0x1710/0x1710
[ 36.273600] kthread+0x40c/0x500
[ 36.274251] ? set_kthread_struct+0x130/0x130
[ 36.275143] ret_from_fork+0x22/0x30
[ 36.275873]
[ 36.276310]
[ 36.276622] Allocated by task 282:
[ 36.277300] kasan_save_stack+0x1e/0x40
[ 36.278071] __kasan_kmalloc+0x81/0xa0
[ 36.278812] kernfs_create_root+0x4c/0x410
[ 36.279636] cgroup_setup_root+0x346/0xb60
[ 36.280446] cgroup1_get_tree+0xc1b/0x1370
[ 36.281266] vfs_get_tree+0x8e/0x2f0
[ 36.281983] path_mount+0x131b/0x1f80
[ 36.282716] __x64_sys_mount+0x27e/0x300
[ 36.283523] do_syscall_64+0x3b/0x90
[ 36.284235] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.285224]
[ 36.285537] Freed by task 10:
[ 36.286124] kasan_save_stack+0x1e/0x40
[ 36.286884] kasan_set_track+0x21/0x30
[ 36.287634] kasan_set_free_info+0x20/0x30
[ 36.288453] __kasan_slab_free+0x108/0x170
[ 36.289272] kfree+0xc5/0x5a0
[ 36.289870] kernfs_put.part.0+0x334/0x540
[ 36.290684] kernfs_put+0x42/0x50
[ 36.291338] __kernfs_remove+0x7ce/0xb00
[ 36.292143] kernfs_destroy_root+0x89/0xb0
[ 36.292955] css_free_rwork_fn+0xa28/0xf40
[ 36.293777] process_one_work+0xa30/0x1710
[ 36.294594] worker_thread+0x62a/0x13e0
[ 36.295356] kthread+0x40c/0x500
[ 36.296010] ret_from_fork+0x22/0x30
[ 36.296727]
[ 36.297035] The buggy address belongs to the object at ffff88800e5aa800
[ 36.297035] which belongs to the cache kmalloc-512 of size 512
[ 36.299464] The buggy address is located 320 bytes inside of
[ 36.299464] 512-byte region [ffff88800e5aa800, ffff88800e5aaa00)
[ 36.301732] The buggy address belongs to the page:
[ 36.302676] page:0000000036841c39 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xe5a8
[ 36.304482] head:0000000036841c39 order:2 compound_mapcount:0 compound_pincount:0
[ 36.305937] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.307084] raw: 0100000000010200 ffffea00003a1e00 dead000000000002 ffff888007841c80
[ 36.308623] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.310140] page dumped because: kasan: bad access detected
[ 36.311242]
[ 36.311575] Memory state around the buggy address:
[ 36.312517] ffff88800e5aa800: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.313944] ffff88800e5aa880: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.315351] >ffff88800e5aa900: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.316764] ^
[ 36.317807] ffff88800e5aa980: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.319215] ffff88800e5aaa00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.320641] ==================================================================
[ 36.410185] cgroup: Unknown subsys name 'hugetlb'
[ 36.411821] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:35:14 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081975f0
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 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=00007f28c4d1cf40 CR3=000000000dce2000 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 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f73bfc2394f4e57
YMM04=0000000000000000 0000000000000000 6174736e69206572 6120737265646165
YMM05=0000000000000000 0000000000000000 613c206564756c63 6e69230a64656c6c
YMM06=0000000000000000 0000000000000000 736e65202f2f203e 6d687469726f676c
YMM07=0000000000000000 0000000000000000 6568202b2b432074 6168742073657275
YMM08=0000000000000000 0000000000000000 736e692065726120 7372656461656820
YMM09=0000000000000000 0000000000000000 206564756c636e69 230a64656c6c6174
YMM10=0000000000000000 0000000000000000 65202f2f203e6d68 7469726f676c613c
YMM11=0000000000000000 0000000000000000 202b2b4320746168 742073657275736e
YMM12=0000000000000000 0000000000000000 74736e6920657261 2073726564616568
YMM13=0000000000000000 0000000000000000 29286e69616d2074 6e690a64656c6c61
YMM14=0000000000000000 0000000000000000 6f6c6c6548222866 746e697270207b20
YMM15=0000000000000000 0000000000000000 0a7d203b29226e5c 21646c726f57202c
info registers vcpu 1
RAX=0000000000000000 RBX=ffff88800e3ef750 RCX=0000000000000009 RDX=0000000000000000
RSI=0000000000000000 RDI=ffff88800e3ef6e0 RBP=ffff8880173a1ac0 RSP=ffff88800e3ef660
R8 =0000000000000001 R9 =ffff88800e3ef6b8 R10=ffffed1001c7dee4 R11=0000000000000001
R12=0000000000000000 R13=ffff88800e3ef6e0 R14=ffff8880173a1ac0 R15=ffff88800e3ef6b8
RIP=ffffffff82118194 RFL=00000212 [----A--] 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 0000555556d5f400 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=000056139133efd0 CR3=000000000c6c6000 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