Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:38703' (ECDSA) to the list of known hosts.
2021/12/06 11:21:16 fuzzer started
2021/12/06 11:21:17 dialing manager at localhost:35719
2021/12/06 11:21:17 checking machine...
2021/12/06 11:21:17 checking revisions...
syzkaller login: [ 36.215943] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:21:17 testing simple program...
[ 36.260658] cgroup: Unknown subsys name 'net'
[ 36.261572] cgroup: Unknown subsys name 'net_prio'
[ 36.263403] cgroup: Unknown subsys name 'devices'
[ 36.264745] cgroup: Unknown subsys name 'blkio'
[ 36.302442]
[ 36.302717] =========================
[ 36.303169] WARNING: held lock freed!
[ 36.303652] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 36.304261] -------------------------
[ 36.304748] kworker/1:0/18 is freeing memory ffff88800ea59c00-ffff88800ea59dff, with a lock still held there!
[ 36.305943] ffff88800ea59d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.307060] 3 locks held by kworker/1:0/18:
[ 36.307582] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 36.308905] #1: ffff88800823fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 36.310329] #2: ffff88800ea59d48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 36.311472]
[ 36.311472] stack backtrace:
[ 36.312091] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.313038] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.314439] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.315105] Call Trace:
[ 36.315422]
[ 36.315699] dump_stack_lvl+0x8b/0xb3
[ 36.316205] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 36.316894] ? kernfs_put.part.0+0x334/0x540
[ 36.317443] kfree+0xb3/0x5a0
[ 36.317882] ? kmem_cache_free+0xce/0x640
[ 36.318392] kernfs_put.part.0+0x334/0x540
[ 36.318925] kernfs_put+0x42/0x50
[ 36.319357] __kernfs_remove+0x7ce/0xb00
[ 36.319922] ? lock_is_held_type+0xd7/0x130
[ 36.320621] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 36.321296] ? down_write+0xde/0x150
[ 36.321753] ? down_write_killable_nested+0x180/0x180
[ 36.322386] kernfs_destroy_root+0x89/0xb0
[ 36.322938] css_free_rwork_fn+0xa28/0xf40
[ 36.323455] process_one_work+0xa30/0x1710
[ 36.324066] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.324632] ? rwlock_bug.part.0+0x90/0x90
[ 36.325146] ? _raw_spin_lock_irq+0x41/0x50
[ 36.325670] worker_thread+0x62a/0x13e0
[ 36.326159] ? process_one_work+0x1710/0x1710
[ 36.326733] kthread+0x40c/0x500
[ 36.327146] ? set_kthread_struct+0x130/0x130
[ 36.327707] ret_from_fork+0x22/0x30
[ 36.328225]
[ 36.328639] ==================================================================
[ 36.329515] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 36.330255] Read of size 8 at addr ffff88800ea59d40 by task kworker/1:0/18
[ 36.331132]
[ 36.331334] CPU: 1 PID: 18 Comm: kworker/1:0 Not tainted 5.16.0-rc3-next-20211203 #1
[ 36.332307] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 36.333735] Workqueue: cgroup_destroy css_free_rwork_fn
[ 36.334423] Call Trace:
[ 36.334746]
[ 36.335024] dump_stack_lvl+0x8b/0xb3
[ 36.335501] print_address_description.constprop.0+0x1f/0x180
[ 36.336491] ? up_write+0x3ac/0x460
[ 36.336978] ? up_write+0x3ac/0x460
[ 36.337421] kasan_report.cold+0x7f/0x11b
[ 36.337932] ? up_write+0x3ac/0x460
[ 36.338376] up_write+0x3ac/0x460
[ 36.338831] css_free_rwork_fn+0xa28/0xf40
[ 36.339349] process_one_work+0xa30/0x1710
[ 36.339942] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 36.340514] ? rwlock_bug.part.0+0x90/0x90
[ 36.341080] ? _raw_spin_lock_irq+0x41/0x50
[ 36.341625] worker_thread+0x62a/0x13e0
[ 36.342134] ? process_one_work+0x1710/0x1710
[ 36.342696] kthread+0x40c/0x500
[ 36.343151] ? set_kthread_struct+0x130/0x130
[ 36.343696] ret_from_fork+0x22/0x30
[ 36.344425]
[ 36.344737]
[ 36.344929] Allocated by task 280:
[ 36.345339] kasan_save_stack+0x1e/0x40
[ 36.345850] __kasan_kmalloc+0x81/0xa0
[ 36.346317] kernfs_create_root+0x4c/0x410
[ 36.346823] cgroup_setup_root+0x346/0xb60
[ 36.347329] cgroup1_get_tree+0xc1b/0x1370
[ 36.347860] vfs_get_tree+0x8e/0x2f0
[ 36.348319] path_mount+0x131b/0x1f80
[ 36.348780] __x64_sys_mount+0x27e/0x300
[ 36.349263] do_syscall_64+0x3b/0x90
[ 36.349713] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 36.350338]
[ 36.350534] Freed by task 18:
[ 36.350906] kasan_save_stack+0x1e/0x40
[ 36.351386] kasan_set_track+0x21/0x30
[ 36.351918] kasan_set_free_info+0x20/0x30
[ 36.352442] __kasan_slab_free+0x108/0x170
[ 36.352955] kfree+0xc5/0x5a0
[ 36.353332] kernfs_put.part.0+0x334/0x540
[ 36.353845] kernfs_put+0x42/0x50
[ 36.354262] __kernfs_remove+0x7ce/0xb00
[ 36.354752] kernfs_destroy_root+0x89/0xb0
[ 36.355256] css_free_rwork_fn+0xa28/0xf40
[ 36.355760] process_one_work+0xa30/0x1710
[ 36.356528] worker_thread+0x62a/0x13e0
[ 36.357017] kthread+0x40c/0x500
[ 36.357430] ret_from_fork+0x22/0x30
[ 36.357917]
[ 36.358116] The buggy address belongs to the object at ffff88800ea59c00
[ 36.358116] which belongs to the cache kmalloc-512 of size 512
[ 36.359645] The buggy address is located 320 bytes inside of
[ 36.359645] 512-byte region [ffff88800ea59c00, ffff88800ea59e00)
[ 36.361175] The buggy address belongs to the page:
[ 36.361787] page:000000006460ff6d refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0xea58
[ 36.362920] head:000000006460ff6d order:2 compound_mapcount:0 compound_pincount:0
[ 36.364041] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 36.364750] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 36.365695] raw: 0000000000000000 0000000080100010 00000001ffffffff 0000000000000000
[ 36.366626] page dumped because: kasan: bad access detected
[ 36.367302]
[ 36.367501] Memory state around the buggy address:
[ 36.368134] ffff88800ea59c00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.369007] ffff88800ea59c80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.369893] >ffff88800ea59d00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.370733] ^
[ 36.371402] ffff88800ea59d80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 36.372289] ffff88800ea59e00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 36.373205] ==================================================================
[ 36.422001] cgroup: Unknown subsys name 'hugetlb'
[ 36.423471] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:21:18 Registers:
info registers vcpu 0
RAX=0000000000000000 RBX=ffff88806cf3d160 RCX=0000000000000000 RDX=ffff88801b0a1ac0
RSI=ffffffff813865f9 RDI=0000000000000003 RBP=0000000000000003 RSP=ffff88801b157930
R8 =0000000000000000 R9 =0000000000000001 R10=ffffffff8138661f R11=0000000000000000
R12=ffffed100d9e7a2d R13=0000000000000001 R14=ffff88806cf3d168 R15=0000000000000001
RIP=ffffffff813865fb RFL=00000293 [--S-A-C] 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 000055555724e400 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=0000563f3f8a7570 CR3=000000001b340000 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=dffffc0000000060 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=ffffffff8236405c RDI=ffffffff87381a60 RBP=ffffffff87381a20 RSP=ffff88800823f778
R8 =0000000000000085 R9 =000000000000005d 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=00007fe6156c66d0 CR3=000000001b2ee000 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 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f70b10aae64352b
YMM04=0000000000000000 0000000000000000 00007f4c4e9df800 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c00000f098
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0001c87c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c0002d4180 000000c0003866e0
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c00025c6f0 000000c000056050
YMM14=0000000000000000 0000000000000000 000000c00025cba0 000000c000062150
YMM15=0000000000000000 0000000000000000 000000c00007a900 000000c00025cbd0