Warning: Permanently added '[localhost]:19070' (ECDSA) to the list of known hosts.
2021/12/06 11:26:44 fuzzer started
2021/12/06 11:26:44 dialing manager at localhost:35719
2021/12/06 11:26:44 checking machine...
2021/12/06 11:26:44 checking revisions...
syzkaller login: [ 35.844779] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:26:44 testing simple program...
[ 35.868009] cgroup: Unknown subsys name 'net'
[ 35.868648] cgroup: Unknown subsys name 'net_prio'
[ 35.869287] cgroup: Unknown subsys name 'devices'
[ 35.870767] cgroup: Unknown subsys name 'blkio'
[ 35.890266]
[ 35.890663] =========================
[ 35.891452] WARNING: held lock freed!
[ 35.892235] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 35.893418] -------------------------
[ 35.895046] kworker/0:1/10 is freeing memory ffff88800d562400-ffff88800d5625ff, with a lock still held there!
[ 35.897128] ffff88800d562548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.899035] 3 locks held by kworker/0:1/10:
[ 35.899936] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 35.902113] #1: ffff888008197da8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 35.904610] #2: ffff88800d562548 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 35.906573]
[ 35.906573] stack backtrace:
[ 35.907498] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.909133] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.911545] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.912676] Call Trace:
[ 35.913215]
[ 35.913686] dump_stack_lvl+0x8b/0xb3
[ 35.914504] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 35.915625] ? kernfs_put.part.0+0x334/0x540
[ 35.916566] kfree+0xb3/0x5a0
[ 35.917231] ? kmem_cache_free+0xce/0x640
[ 35.918114] kernfs_put.part.0+0x334/0x540
[ 35.919039] kernfs_put+0x42/0x50
[ 35.919775] __kernfs_remove+0x7ce/0xb00
[ 35.920638] ? lock_is_held_type+0xd7/0x130
[ 35.921560] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 35.922683] ? down_write+0xde/0x150
[ 35.923472] ? down_write_killable_nested+0x180/0x180
[ 35.924566] kernfs_destroy_root+0x89/0xb0
[ 35.925462] css_free_rwork_fn+0xa28/0xf40
[ 35.926365] process_one_work+0xa30/0x1710
[ 35.927277] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.928269] ? rwlock_bug.part.0+0x90/0x90
[ 35.929169] ? _raw_spin_lock_irq+0x41/0x50
[ 35.930089] worker_thread+0x62a/0x13e0
[ 35.930957] ? process_one_work+0x1710/0x1710
[ 35.931910] kthread+0x40c/0x500
[ 35.932627] ? set_kthread_struct+0x130/0x130
[ 35.933576] ret_from_fork+0x22/0x30
[ 35.934374]
[ 35.934964] ==================================================================
[ 35.936512] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 35.937768] Read of size 8 at addr ffff88800d562540 by task kworker/0:1/10
[ 35.939245]
[ 35.939593] CPU: 0 PID: 10 Comm: kworker/0:1 Not tainted 5.16.0-rc3-next-20211203 #1
[ 35.941243] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 35.943673] Workqueue: cgroup_destroy css_free_rwork_fn
[ 35.944811] Call Trace:
[ 35.945355]
[ 35.945827] dump_stack_lvl+0x8b/0xb3
[ 35.946650] print_address_description.constprop.0+0x1f/0x180
[ 35.947914] ? up_write+0x3ac/0x460
[ 35.948671] ? up_write+0x3ac/0x460
[ 35.949426] kasan_report.cold+0x7f/0x11b
[ 35.950303] ? up_write+0x3ac/0x460
[ 35.951069] up_write+0x3ac/0x460
[ 35.951792] css_free_rwork_fn+0xa28/0xf40
[ 35.952680] process_one_work+0xa30/0x1710
[ 35.953567] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 35.954560] ? rwlock_bug.part.0+0x90/0x90
[ 35.955440] ? _raw_spin_lock_irq+0x41/0x50
[ 35.956342] worker_thread+0x62a/0x13e0
[ 35.957176] ? process_one_work+0x1710/0x1710
[ 35.958110] kthread+0x40c/0x500
[ 35.958829] ? set_kthread_struct+0x130/0x130
[ 35.959772] ret_from_fork+0x22/0x30
[ 35.960576]
[ 35.961060]
[ 35.961404] Allocated by task 281:
[ 35.962138] kasan_save_stack+0x1e/0x40
[ 35.962986] __kasan_kmalloc+0x81/0xa0
[ 35.963797] kernfs_create_root+0x4c/0x410
[ 35.964677] cgroup_setup_root+0x346/0xb60
[ 35.965547] cgroup1_get_tree+0xc1b/0x1370
[ 35.966422] vfs_get_tree+0x8e/0x2f0
[ 35.967166] path_mount+0x131b/0x1f80
[ 35.967970] __x64_sys_mount+0x27e/0x300
[ 35.968836] do_syscall_64+0x3b/0x90
[ 35.969626] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.970725]
[ 35.971053] Freed by task 10:
[ 35.971687] kasan_save_stack+0x1e/0x40
[ 35.972499] kasan_set_track+0x21/0x30
[ 35.973287] kasan_set_free_info+0x20/0x30
[ 35.974154] __kasan_slab_free+0x108/0x170
[ 35.975026] kfree+0xc5/0x5a0
[ 35.975666] kernfs_put.part.0+0x334/0x540
[ 35.976525] kernfs_put+0x42/0x50
[ 35.977235] __kernfs_remove+0x7ce/0xb00
[ 35.978050] kernfs_destroy_root+0x89/0xb0
[ 35.978918] css_free_rwork_fn+0xa28/0xf40
[ 35.979776] process_one_work+0xa30/0x1710
[ 35.980628] worker_thread+0x62a/0x13e0
[ 35.981455] kthread+0x40c/0x500
[ 35.982156] ret_from_fork+0x22/0x30
[ 35.982941]
[ 35.983277] Last potentially related work creation:
[ 35.984291] kasan_save_stack+0x1e/0x40
[ 35.985121] __kasan_record_aux_stack+0x97/0xa0
[ 35.986087] kvfree_call_rcu+0x2c/0x7a0
[ 35.986926] timerfd_release+0x103/0x230
[ 35.987772] __fput+0x281/0x9e0
[ 35.988453] task_work_run+0xe2/0x1a0
[ 35.989246] exit_to_user_mode_prepare+0x1be/0x1c0
[ 35.990263] syscall_exit_to_user_mode+0x19/0x50
[ 35.991262] do_syscall_64+0x48/0x90
[ 35.992040] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 35.993122]
[ 35.993459] The buggy address belongs to the object at ffff88800d562400
[ 35.993459] which belongs to the cache kmalloc-512 of size 512
[ 35.996047] The buggy address is located 320 bytes inside of
[ 35.996047] 512-byte region [ffff88800d562400, ffff88800d562600)
[ 35.998506] The buggy address belongs to the page:
[ 35.999530] page:00000000e381db88 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xd560
[ 36.001411] head:00000000e381db88 order:2 compound_mapcount:0 compound_pincount:0
[ 36.002961] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.004155] raw: 0100000000010200 ffffea000022ee00 dead000000000002 ffff888007841c80
[ 36.005739] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 36.007345] page dumped because: kasan: bad access detected
[ 36.008491]
[ 36.008821] Memory state around the buggy address:
[ 36.009832] ffff88800d562400: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.011341] ffff88800d562480: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.012835] >ffff88800d562500: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.014324] ^
[ 36.015455] ffff88800d562580: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.016947] ffff88800d562600: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.018455] ==================================================================
[ 36.043116] cgroup: Unknown subsys name 'hugetlb'
[ 36.047930] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
[ 45.755250] kmemleak: 1 new suspected memory leaks (see /sys/kernel/debug/kmemleak)
[ 45.846685] audit: type=1400 audit(1638790014.670:6): avc: denied { execmem } for pid=283 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:
11:26:44 Registers:
info registers vcpu 0
RAX=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff8880081975f0
R8 =0000000000000029 R9 =0000000000000033 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=000055c178fc28be CR3=000000000dc4e000 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 2525252525252525 2525252525252525
YMM01=0000000000000000 0000000000000000 0000000000ff0000 00000000000000ff
YMM02=0000000000000000 0000000000000000 0000000000ff0000 00000000000000ff
YMM03=0000000000000000 0000000000000000 375afdebbf381c81 00000000000e5cd8
YMM04=0000000000000000 0000000000000000 7ce7feacac7fc618 000000000012b670
YMM05=0000000000000000 0000000000000000 d3fdd5f48436fbd7 00000000000aeac8
YMM06=0000000000000000 0000000000000000 94d480180e236183 00000000000ae980
YMM07=0000000000000000 0000000000000000 a1fcdcf819d7e1e5 00000000000ae728
YMM08=0000000000000000 0000000000000000 636f72702f006469 6e6f697373657300
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=00007ff99c727c80 CR3=000000000dc4e000 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 da8f5a3a61658097 3b4a0ceae9ff5809
YMM02=0000000000000000 0000000000000000 0000000000115520 bf2846eb774fb8e3
YMM03=0000000000000000 0000000000000000 000000000012b818 1210b8ba71c28343
YMM04=0000000000000000 0000000000000000 94d480180e236183 00000000000ae980
YMM05=0000000000000000 0000000000000000 9ebfcf3a7e7141ea 000000000012b8e0
YMM06=0000000000000000 0000000000000000 698e0f81b0932b79 000000000012b818
YMM07=0000000000000000 0000000000000000 e45775b7bd281a64 0000000000115520
YMM08=0000000000000000 0000000000000000 e2de77aa903facfa 0000000000115470
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