Debian GNU/Linux 11 syzkaller ttyS0
Warning: Permanently added '[localhost]:17843' (ECDSA) to the list of known hosts.
2021/12/06 11:27:40 fuzzer started
2021/12/06 11:27:41 dialing manager at localhost:35719
2021/12/06 11:27:41 checking machine...
2021/12/06 11:27:41 checking revisions...
syzkaller login: [ 27.835767] kmemleak: Automatic memory scanning thread ended
2021/12/06 11:27:41 testing simple program...
[ 27.876036] cgroup: Unknown subsys name 'net'
[ 27.878051] cgroup: Unknown subsys name 'net_prio'
[ 27.880129] cgroup: Unknown subsys name 'devices'
[ 27.881938] cgroup: Unknown subsys name 'blkio'
[ 27.903991]
[ 27.904375] =========================
[ 27.905124] WARNING: held lock freed!
[ 27.905866] 5.16.0-rc3-next-20211203 #1 Not tainted
[ 27.906962] -------------------------
[ 27.908140] kworker/1:2/48 is freeing memory ffff888017d2bc00-ffff888017d2bdff, with a lock still held there!
[ 27.910552] ffff888017d2bd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 27.912318] 3 locks held by kworker/1:2/48:
[ 27.913184] #0: ffff8880080a6138 ((wq_completion)cgroup_destroy){+.+.}-{0:0}, at: process_one_work+0x929/0x1710
[ 27.915211] #1: ffff88800b70fda8 ((work_completion)(&(&css->destroy_rwork)->work)){+.+.}-{0:0}, at: process_one_work+0x95d/0x1710
[ 27.917532] #2: ffff888017d2bd48 (&root->kernfs_rwsem){++++}-{3:3}, at: __kernfs_remove+0x627/0xb00
[ 27.919328]
[ 27.919328] stack backtrace:
[ 27.920187] CPU: 1 PID: 48 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 27.921700] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 27.923884] Workqueue: cgroup_destroy css_free_rwork_fn
[ 27.924920] Call Trace:
[ 27.925443]
[ 27.925888] dump_stack_lvl+0x8b/0xb3
[ 27.926655] debug_check_no_locks_freed.cold+0xa5/0xb1
[ 27.927704] ? kernfs_put.part.0+0x334/0x540
[ 27.928587] kfree+0xb3/0x5a0
[ 27.929220] ? kmem_cache_free+0xce/0x640
[ 27.930043] kernfs_put.part.0+0x334/0x540
[ 27.930901] kernfs_put+0x42/0x50
[ 27.931572] __kernfs_remove+0x7ce/0xb00
[ 27.932364] ? lock_is_held_type+0xd7/0x130
[ 27.933209] ? kernfs_next_descendant_post+0x2f0/0x2f0
[ 27.934220] ? down_write+0xde/0x150
[ 27.934937] ? down_write_killable_nested+0x180/0x180
[ 27.935935] kernfs_destroy_root+0x89/0xb0
[ 27.936750] css_free_rwork_fn+0xa28/0xf40
[ 27.937591] process_one_work+0xa30/0x1710
[ 27.938413] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 27.939313] ? rwlock_bug.part.0+0x90/0x90
[ 27.940127] ? _raw_spin_lock_irq+0x41/0x50
[ 27.941037] worker_thread+0x62a/0x13e0
[ 27.941831] ? process_one_work+0x1710/0x1710
[ 27.942702] kthread+0x40c/0x500
[ 27.943354] ? set_kthread_struct+0x130/0x130
[ 27.944218] ret_from_fork+0x22/0x30
[ 27.944944]
[ 27.945688] ==================================================================
[ 27.947093] BUG: KASAN: use-after-free in up_write+0x3ac/0x460
[ 27.948249] Read of size 8 at addr ffff888017d2bd40 by task kworker/1:2/48
[ 27.949600]
[ 27.949913] CPU: 1 PID: 48 Comm: kworker/1:2 Not tainted 5.16.0-rc3-next-20211203 #1
[ 27.951426] Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.14.0-0-g155821a1990b-prebuilt.qemu.org 04/01/2014
[ 27.953647] Workqueue: cgroup_destroy css_free_rwork_fn
[ 27.954691] Call Trace:
[ 27.955189]
[ 27.955626] dump_stack_lvl+0x8b/0xb3
[ 27.956374] print_address_description.constprop.0+0x1f/0x180
[ 27.957555] ? up_write+0x3ac/0x460
[ 27.958273] ? up_write+0x3ac/0x460
[ 27.958980] kasan_report.cold+0x7f/0x11b
[ 27.959786] ? up_write+0x3ac/0x460
[ 27.960496] up_write+0x3ac/0x460
[ 27.961186] css_free_rwork_fn+0xa28/0xf40
[ 27.962018] process_one_work+0xa30/0x1710
[ 27.962852] ? pwq_dec_nr_in_flight+0x2a0/0x2a0
[ 27.963782] ? rwlock_bug.part.0+0x90/0x90
[ 27.964629] ? _raw_spin_lock_irq+0x41/0x50
[ 27.965512] worker_thread+0x62a/0x13e0
[ 27.966307] ? process_one_work+0x1710/0x1710
[ 27.967206] kthread+0x40c/0x500
[ 27.967878] ? set_kthread_struct+0x130/0x130
[ 27.968767] ret_from_fork+0x22/0x30
[ 27.969525]
[ 27.969982]
[ 27.970311] Allocated by task 279:
[ 27.971013] kasan_save_stack+0x1e/0x40
[ 27.971785] __kasan_kmalloc+0x81/0xa0
[ 27.972542] kernfs_create_root+0x4c/0x410
[ 27.973369] cgroup_setup_root+0x346/0xb60
[ 27.974196] cgroup1_get_tree+0xc1b/0x1370
[ 27.975025] vfs_get_tree+0x8e/0x2f0
[ 27.975750] path_mount+0x131b/0x1f80
[ 27.976487] __x64_sys_mount+0x27e/0x300
[ 27.977294] do_syscall_64+0x3b/0x90
[ 27.978017] entry_SYSCALL_64_after_hwframe+0x44/0xae
[ 27.979020]
[ 27.979334] Freed by task 48:
[ 27.979932] kasan_save_stack+0x1e/0x40
[ 27.980706] kasan_set_track+0x21/0x30
[ 27.981468] kasan_set_free_info+0x20/0x30
[ 27.982288] __kasan_slab_free+0x108/0x170
[ 27.983101] kfree+0xc5/0x5a0
[ 27.983706] kernfs_put.part.0+0x334/0x540
[ 27.984530] kernfs_put+0x42/0x50
[ 27.985203] __kernfs_remove+0x7ce/0xb00
[ 27.985988] kernfs_destroy_root+0x89/0xb0
[ 27.986809] css_free_rwork_fn+0xa28/0xf40
[ 27.987627] process_one_work+0xa30/0x1710
[ 27.988443] worker_thread+0x62a/0x13e0
[ 27.989226] kthread+0x40c/0x500
[ 27.989874] ret_from_fork+0x22/0x30
[ 27.990585]
[ 27.990895] The buggy address belongs to the object at ffff888017d2bc00
[ 27.990895] which belongs to the cache kmalloc-512 of size 512
[ 27.993267] The buggy address is located 320 bytes inside of
[ 27.993267] 512-byte region [ffff888017d2bc00, ffff888017d2be00)
[ 27.995495] The buggy address belongs to the page:
[ 27.996422] page:000000009dc1a497 refcount:1 mapcount:0 mapping:0000000000000000 index:0x0 pfn:0x17d28
[ 27.998225] head:000000009dc1a497 order:2 compound_mapcount:0 compound_pincount:0
[ 27.999657] flags: 0x100000000010200(slab|head|node=0|zone=1)
[ 28.000785] raw: 0100000000010200 0000000000000000 dead000000000001 ffff888007841c80
[ 28.002279] raw: 0000000000000000 0000000000100010 00000001ffffffff 0000000000000000
[ 28.003758] page dumped because: kasan: bad access detected
[ 28.004864]
[ 28.005193] Memory state around the buggy address:
[ 28.006157] ffff888017d2bc00: fa fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.007575] ffff888017d2bc80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.008983] >ffff888017d2bd00: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.010417] ^
[ 28.011465] ffff888017d2bd80: fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb fb
[ 28.012883] ffff888017d2be00: fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc fc
[ 28.014304] ==================================================================
[ 28.045845] cgroup: Unknown subsys name 'hugetlb'
[ 28.050378] cgroup: Unknown subsys name 'rlimit'
executing program
executing program
executing program
VM DIAGNOSIS:
11:27:41 Registers:
info registers vcpu 0
RAX=0000000000000817 RBX=0000000000000000 RCX=0000000000000000 RDX=1ffff1100d9c70ad
RSI=00000000ffffffff RDI=ffffffff85102c68 RBP=0000000000000000 RSP=ffff88806ce09c80
R8 =0000000000000000 R9 =ffffffff858bd8d7 R10=fffffbfff0b17b1a R11=0000000000000001
R12=ffff888008093438 R13=dffffc0000000000 R14=ffff888008093400 R15=0000000000000008
RIP=ffffffff8121a646 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 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=00007f980ed73e30 CR3=000000001d244000 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 410380c000000000
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=ffff88800b70f5f0
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 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=00007ffe71cc1000 CR3=000000001d244000 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 4142cfed3bcf2d9e
YMM01=0000000000000000 0000000000000000 0000000000000000 3f847ae147ae147b
YMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM03=0000000000000000 0000000000000000 0000000000000000 3f6dd668316a9eac
YMM04=0000000000000000 0000000000000000 00007f3092d99600 0000000000415710
YMM05=0000000000000000 0000000000000000 0000000000000000 000000c00034a048
YMM06=0000000000000000 0000000000000000 0000000000505007 000000c0003487c0
YMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM09=0000000000000000 0000000000000000 00000000004643c1 0000000000000000
YMM10=0000000000000000 0000000000000000 000000c0003cc6e0 000000c0003c82c0
YMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000
YMM13=0000000000000000 0000000000000000 000000c0002c86f0 000000c0002ec000
YMM14=0000000000000000 0000000000000000 000000c0002c8ba0 000000c000054150
YMM15=0000000000000000 0000000000000000 000000c00006e900 000000c0002c8bd0