Warning: Permanently added '[localhost]:47866' (ECDSA) to the list of known hosts.
2021/12/06 11:23:33 fuzzer started
2021/12/06 11:23:33 dialing manager at localhost:35719
2021/12/06 11:23:33 checking machine...
2021/12/06 11:23:33 checking revisions...
syzkaller login: [ 36.616430] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:23:33 testing simple program...
[ 36.651406] cgroup: Unknown subsys name 'net'
[ 36.652231] cgroup: Unknown subsys name 'net_prio'
[ 36.653077] cgroup: Unknown subsys name 'devices'
[ 36.653890] cgroup: Unknown subsys name 'blkio'
[ 36.697068]
[ 36.697302] =========================
[ 36.697797] WARNING: held lock freed!
[ 36.698265] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.698903] -------------------------
[ 36.699355] kworker/0:2/48 is freeing memory ffff88800ceb8c00-ffff88800ceb8dff, with a lock still held there!
[ 36.700615] ffff88800ceb8d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.701691] 3 locks held by kworker/0:2/48:
[ 36.702209] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.712527] #1: ffff88800bc2fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.714070] #2: ffff88800ceb8d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.715215]
[ 36.715215] stack backtrace:
[ 36.715760] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.716754] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.718206] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.721743] Call Trace:
[ 36.722072]
[ 36.722566] dump_stack_lvl+0x8b/0xb3
[ 36.723053] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.723715] ? kernfs_put.part.0+0x334/0x540
[ 36.724273] kfree+0xb3/0x5a0
[ 36.724662] ? kmem_cache_free+0xce/0x640
[ 36.736846] kernfs_put.part.0+0x334/0x540
[ 36.737405] kernfs_put+0x42/0x50
[ 36.737869] __kernfs_remove+0x7ce/0xb00
[ 36.738547] ? lock_is_held_type+0xd7/0x130
[ 36.739106] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.739780] ? down_write+0xde/0x150
[ 36.740247] ? down_write_killable_nested+0x180/0x180
[ 36.740944] kernfs_destroy_root+0x89/0xb0
[ 36.741474] css_free_rwork_fn+0xa28/0xf40
[ 36.742012] process_one_work+0xa30/0x1710
[ 36.742590] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.743187] ? rwlock_bug.part.0+0x90/0x90
[ 36.743737] ? _raw_spin_lock_irq+0x41/0x50
[ 36.744262] worker_thread+0x62a/0x13e0
[ 36.744795] ? process_one_work+0x1710/0x1710
[ 36.745339] kthread+0x40c/0x500
[ 36.745754] ? set_kthread_struct+0x130/0x130
[ 36.746321] ret_from_fork+0x22/0x30
[ 36.746800]
[ 36.747211] ==================================================================
[ 36.748092] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.748777] Read of size 8 at addr ffff88800ceb8d40 by task kworker/0:2/48
[ 36.749569]
[ 36.749776] CPU: 0 PID: 48 Comm: kworker/0:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.755156] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.756525] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.757172] Call Trace:
[ 36.757481]
[ 36.757759] dump_stack_lvl+0x8b/0xb3
[ 36.758216] print_address_description.constprop.0+0x1f/0x180
[ 36.775106] ? up_write+0x3ac/0x460
[ 36.775552] ? up_write+0x3ac/0x460
[ 36.775973] kasan_report.cold+0x7f/0x11b
[ 36.776463] ? up_write+0x3ac/0x460
[ 36.776896] up_write+0x3ac/0x460
[ 36.777305] css_free_rwork_fn+0xa28/0xf40
[ 36.777807] process_one_work+0xa30/0x1710
[ 36.778327] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.778879] ? rwlock_bug.part.0+0x90/0x90
[ 36.779365] ? _raw_spin_lock_irq+0x41/0x50
[ 36.779896] worker_thread+0x62a/0x13e0
[ 36.780354] ? process_one_work+0x1710/0x1710
[ 36.780861] kthread+0x40c/0x500
[ 36.781241] ? set_kthread_struct+0x130/0x130
[ 36.781750] ret_from_fork+0x22/0x30
[ 36.782177]
[ 36.782462]
[ 36.782647] Allocated by task 280:
[ 36.783037] kasan_save_stack+0x1e/0x40
[ 36.783483] __kasan_kmalloc+0x81/0xa0
[ 36.783926] kernfs_create_root+0x4c/0x410
[ 36.784400] cgroup_setup_root+0x346/0xb60
[ 36.784876] cgroup1_get_tree+0xc1b/0x1370
[ 36.785349] vfs_get_tree+0x8e/0x2f0
[ 36.785776] path_mount+0x131b/0x1f80
[ 36.786205] __x64_sys_mount+0x27e/0x300
[ 36.787745] do_syscall_64+0x3b/0x90
[ 36.788214] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.788870]
[ 36.789069] Freed by task 48:
[ 36.789443] kasan_save_stack+0x1e/0x40
[ 36.789971] kasan_set_track+0x21/0x30
[ 36.790468] kasan_set_free_info+0x20/0x30
[ 36.791006] __kasan_slab_free+0x108/0x170
[ 36.791514] kfree+0xc5/0x5a0
[ 36.791886] kernfs_put.part.0+0x334/0x540
[ 36.792398] kernfs_put+0x42/0x50
[ 36.792861] __kernfs_remove+0x7ce/0xb00
[ 36.793337] kernfs_destroy_root+0x89/0xb0
[ 36.793864] css_free_rwork_fn+0xa28/0xf40
[ 36.794395] process_one_work+0xa30/0x1710
[ 36.795017] worker_thread+0x62a/0x13e0
[ 36.795542] kthread+0x40c/0x500
[ 36.795973] ret_from_fork+0x22/0x30
[ 36.796420]
[ 36.796625] The buggy address belongs to the object at ffff88800ceb8c00
[ 36.796625] which belongs to the cache kmalloc-512 of size 512
[ 36.798133] The buggy address is located 320 bytes inside of
[ 36.798133] 512-byte region [ffff88800ceb8c00, ffff88800ceb8e00)
[ 36.799602] The buggy address belongs to the page:
[ 36.800198] page:000000008facf63b refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xceb8
[ 36.801354] head:000000008facf63b order:2 compound_mapcount:0 compound_pincount:0
[ 36.802288] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.802965] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 36.803863] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.804751] page dumped because: kasan: bad access detected
[ 36.805393]
[ 36.805591] Memory state around the buggy address:
[ 36.806146] ffff88800ceb8c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.807058] ffff88800ceb8c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.807955] >ffff88800ceb8d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.808864] ^
[ 36.809515] ffff88800ceb8d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.810412] ffff88800ceb8e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.811282] ==================================================================
[ 36.852615] cgroup: Unknown subsys name 'hugetlb'
[ 36.853970] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:23:34 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800bc2f4e0
R8 =0000000000000017 R9 =000000000000003c 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=00007fff82d66de8 CR3=000000000dbc0000 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 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
info registers vcpu 1
RAX=ffffffff84078af0 RBX=ffff8880081a9ac0 RCX=ffffffff8405abe1 RDX=ffffed100d9e7143
RSI=0000000000000001 RDI=ffffffff84078eaf RBP=0000000000000001 RSP=ffff888008207e78
R8 =0000000000000000 R9 =ffff88806cf38a13 R10=ffffed100d9e7142 R11=0000000000000001
R12=ffffed1001035358 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 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=00007f132a338d68 CR3=000000000942a000 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 7465677261742e79 636e656772656d65
YMM02=0000000000000000 0000000000000000 ffffffffffffffff 0f0e0d0c0b0a0908
YMM03=0000000000000000 0000000000000000 0000000000000073 66626c7465677568
YMM04=0000000000000000 0000000000000000 2e2e2e2e2e2e2e2e 2e2e2e2e2e2e2e2e
YMM05=0000000000000000 0000000000000000 612d312e31303a30 303a303030302d69
YMM06=0000000000000000 0000000000000000 0000000000000000 6c6562616c636573
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 6564636261393837 3635343332313040
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