syzkaller login: [ 91.852714][ T10] cfg80211: failed to load regulatory.db
Warning: Permanently added '[localhost]:4572' (ED25519) to the list of known hosts.
executing program
[ 211.348165][ T5338] loop0: detected capacity change from 0 to 256
[ 211.377551][ T5338] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0xc61f63e4, utbl_chksum : 0xe619d30d)
[ 434.893132][ T26] INFO: task kworker/u4:3:47 blocked for more than 143 seconds.
[ 434.896543][ T26] Not tainted 6.15.0-rc7-syzkaller-00152-gd0c22de9995b #0
[ 434.900832][ T26] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 434.913332][ T26] task:kworker/u4:3 state:D stack:21304 pid:47 tgid:47 ppid:2 task_flags:0x4208060 flags:0x00004000
[ 434.918092][ T26] Workqueue: writeback wb_workfn (flush-7:0)
[ 434.921315][ T26] Call Trace:
[ 434.922700][ T26]
[ 434.933383][ T26] __schedule+0x16e2/0x4cd0
[ 434.935321][ T26] ? blk_mq_flush_plug_list+0x10e/0x1760
[ 434.937593][ T26] ? __lock_acquire+0xaac/0xd20
[ 434.939507][ T26] ? __pfx_blk_mq_flush_plug_list+0x10/0x10
[ 434.941924][ T26] ? schedule+0x165/0x360
[ 434.953452][ T26] ? __pfx___schedule+0x10/0x10
[ 434.955595][ T26] ? schedule+0x91/0x360
[ 434.957471][ T26] schedule+0x165/0x360
[ 434.959315][ T26] schedule_preempt_disabled+0x13/0x30
[ 434.961669][ T26] __mutex_lock+0x724/0xe80
[ 434.983060][ T26] ? __mutex_lock+0x51b/0xe80
[ 434.985089][ T26] ? exfat_write_inode+0xe8/0x1a0
[ 434.987265][ T26] ? __pfx___mutex_lock+0x10/0x10
[ 434.989482][ T26] exfat_write_inode+0xe8/0x1a0
[ 434.991824][ T26] __writeback_single_inode+0x6f1/0xff0
[ 435.003067][ T26] writeback_sb_inodes+0x6b5/0x1000
[ 435.005317][ T26] ? __pfx_writeback_sb_inodes+0x10/0x10
[ 435.008116][ T26] ? __pfx___up_read+0x10/0x10
[ 435.010187][ T26] __writeback_inodes_wb+0x111/0x240
[ 435.012288][ T26] wb_writeback+0x44f/0xaf0
[ 435.023608][ T26] ? queue_io+0x351/0x590
[ 435.025494][ T26] ? __pfx_wb_writeback+0x10/0x10
[ 435.027732][ T26] wb_workfn+0xaef/0xef0
[ 435.029680][ T26] ? __pfx_wb_workfn+0x10/0x10
[ 435.031843][ T26] ? register_lock_class+0x51/0x320
[ 435.053091][ T26] ? __lock_acquire+0xaac/0xd20
[ 435.055396][ T26] ? process_scheduled_works+0x9ec/0x17a0
[ 435.057919][ T26] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.060155][ T26] ? process_scheduled_works+0x9ec/0x17a0
[ 435.062596][ T26] ? process_scheduled_works+0x9ec/0x17a0
[ 435.073535][ T26] process_scheduled_works+0xadb/0x17a0
[ 435.076008][ T26] ? __pfx_process_scheduled_works+0x10/0x10
[ 435.078594][ T26] worker_thread+0x8a0/0xda0
[ 435.080525][ T26] ? __pfx__raw_spin_unlock_irqrestore+0x10/0x10
[ 435.093096][ T26] ? __kthread_parkme+0x7b/0x200
[ 435.095319][ T26] kthread+0x70e/0x8a0
[ 435.097122][ T26] ? __pfx_worker_thread+0x10/0x10
[ 435.099384][ T26] ? __pfx_kthread+0x10/0x10
[ 435.101397][ T26] ? __pfx_kthread+0x10/0x10
[ 435.113579][ T26] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.116653][ T26] ? lockdep_hardirqs_on+0x9c/0x150
[ 435.118852][ T26] ? __pfx_kthread+0x10/0x10
[ 435.120904][ T26] ret_from_fork+0x4b/0x80
[ 435.122897][ T26] ? __pfx_kthread+0x10/0x10
[ 435.143068][ T26] ret_from_fork_asm+0x1a/0x30
[ 435.145231][ T26]
[ 435.147023][ T26]
[ 435.147023][ T26] Showing all locks held in the system:
[ 435.150464][ T26] 1 lock held by khungtaskd/26:
[ 435.152607][ T26] #0: ffffffff8df3dee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
[ 435.163604][ T26] 4 locks held by kworker/u4:3/47:
[ 435.165497][ T26] #0: ffff88801bb09948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0
[ 435.169493][ T26] #1: ffffc9000062fc60 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0
[ 435.183351][ T26] #2: ffff888042df60e0 (&type->s_umount_key#42){.+.+}-{4:4}, at: super_trylock_shared+0x20/0xf0
[ 435.187240][ T26] #3: ffff888035f0c0e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_write_inode+0xe8/0x1a0
[ 435.191413][ T26] 2 locks held by getty/5107:
[ 435.213125][ T26] #0: ffff88801f9d10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 435.218344][ T26] #1: ffffc9000018e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
[ 435.233110][ T26] 3 locks held by syz-executor309/5338:
[ 435.235540][ T26]
[ 435.236656][ T26] =============================================
[ 435.236656][ T26]
[ 435.240370][ T26] NMI backtrace for cpu 0
[ 435.240380][ T26] CPU: 0 UID: 0 PID: 26 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller-00152-gd0c22de9995b #0 PREEMPT(full)
[ 435.240393][ T26] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 435.240399][ T26] Call Trace:
[ 435.240407][ T26]
[ 435.240413][ T26] dump_stack_lvl+0x189/0x250
[ 435.240430][ T26] ? __wake_up_klogd+0xd9/0x110
[ 435.240442][ T26] ? __pfx_dump_stack_lvl+0x10/0x10
[ 435.240455][ T26] ? __pfx__printk+0x10/0x10
[ 435.240470][ T26] nmi_cpu_backtrace+0x39e/0x3d0
[ 435.240483][ T26] ? __pfx_nmi_cpu_backtrace+0x10/0x10
[ 435.240492][ T26] ? _printk+0xcf/0x120
[ 435.240503][ T26] ? __pfx__printk+0x10/0x10
[ 435.240515][ T26] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10
[ 435.240528][ T26] nmi_trigger_cpumask_backtrace+0x17a/0x300
[ 435.240540][ T26] watchdog+0xfee/0x1030
[ 435.240562][ T26] ? watchdog+0x1de/0x1030
[ 435.240579][ T26] kthread+0x70e/0x8a0
[ 435.240593][ T26] ? __pfx_watchdog+0x10/0x10
[ 435.240605][ T26] ? __pfx_kthread+0x10/0x10
[ 435.240618][ T26] ? __pfx_kthread+0x10/0x10
[ 435.240630][ T26] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.240640][ T26] ? lockdep_hardirqs_on+0x9c/0x150
[ 435.240653][ T26] ? __pfx_kthread+0x10/0x10
[ 435.240663][ T26] ret_from_fork+0x4b/0x80
[ 435.240673][ T26] ? __pfx_kthread+0x10/0x10
[ 435.240684][ T26] ret_from_fork_asm+0x1a/0x30
[ 435.240703][ T26]
[ 435.240710][ T26] Kernel panic - not syncing: hung_task: blocked tasks
[ 435.303916][ T26] CPU: 0 UID: 0 PID: 26 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller-00152-gd0c22de9995b #0 PREEMPT(full)
[ 435.308908][ T26] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 435.313521][ T26] Call Trace:
[ 435.314971][ T26]
[ 435.316278][ T26] dump_stack_lvl+0x99/0x250
[ 435.318242][ T26] ? __asan_memcpy+0x40/0x70
[ 435.320250][ T26] ? __pfx_dump_stack_lvl+0x10/0x10
[ 435.322518][ T26] ? __pfx__printk+0x10/0x10
[ 435.324524][ T26] panic+0x2db/0x790
[ 435.326344][ T26] ? __pfx_panic+0x10/0x10
[ 435.330030][ T26] ? nmi_backtrace_stall_check+0x433/0x440
[ 435.332603][ T26] ? irq_work_queue+0xc3/0x140
[ 435.334695][ T26] watchdog+0x102d/0x1030
[ 435.336545][ T26] ? watchdog+0x1de/0x1030
[ 435.338496][ T26] kthread+0x70e/0x8a0
[ 435.340351][ T26] ? __pfx_watchdog+0x10/0x10
[ 435.342471][ T26] ? __pfx_kthread+0x10/0x10
[ 435.344363][ T26] ? __pfx_kthread+0x10/0x10
[ 435.346281][ T26] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.348471][ T26] ? lockdep_hardirqs_on+0x9c/0x150
[ 435.350617][ T26] ? __pfx_kthread+0x10/0x10
[ 435.352690][ T26] ret_from_fork+0x4b/0x80
[ 435.354663][ T26] ? __pfx_kthread+0x10/0x10
[ 435.356679][ T26] ret_from_fork_asm+0x1a/0x30
[ 435.358745][ T26]
[ 435.360461][ T26] Kernel Offset: disabled
[ 435.362332][ T26] Rebooting in 86400 seconds..
VM DIAGNOSIS:
23:12:48 Registers:
info registers vcpu 0
CPU#0
RAX=1ffffffff336ab60 RBX=00000000000003fd RCX=0000000000000000 RDX=00000000000003fd
RSI=0000000000000000 RDI=0000000000000020 RBP=ffffffff99b55ed0 RSP=ffffc900004df710
R8 =ffff888000c48237 R9 =1ffff11000189046 R10=dffffc0000000000 R11=ffffffff853e2740
R12=dffffc0000000000 R13=0000000000000000 R14=ffffffff99b55c40 R15=0000000000000000
RIP=ffffffff853e27b7 RFL=00000002 [-------] CPL=0 II=0 A20=1 SMM=0 HLT=0
ES =0000 0000000000000000 ffffffff 00c00000
CS =0010 0000000000000000 ffffffff 00a09b00 DPL=0 CS64 [-RA]
SS =0018 0000000000000000 ffffffff 00c09300 DPL=0 DS [-WA]
DS =0000 0000000000000000 ffffffff 00c00000
FS =0000 0000000000000000 ffffffff 00c00000
GS =0000 ffff88808d6c2000 ffffffff 00c00000
LDT=0000 0000000000000000 ffffffff 00c00000
TR =0040 fffffe0000003000 00004087 00008b00 DPL=0 TSS64-busy
GDT= fffffe0000001000 0000007f
IDT= fffffe0000000000 00000fff
CR0=80050033 CR2=0000560393e5a168 CR3=0000000041d1c000 CR4=00352ef0
DR0=0000000000000000 DR1=0000000000000000 DR2=0000000000000000 DR3=0000000000000000
DR6=00000000fffe0ff0 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
Opmask00=0000000010444000 Opmask01=0000000000000001 Opmask02=00000000fffffbff Opmask03=0000000000000000
Opmask04=0000000000000000 Opmask05=0000000000000000 Opmask06=0000000000000000 Opmask07=0000000000000000
ZMM00=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 3552102e13d39089 58e7562ea425f0dd
ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 c7c125ad7634fe70 b7a80736c0fce1fb
ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 bd1b3436612c6d3e 4356a967211533c7
ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 f7f15c42fe028610 2bb656f11ff1a0c4
ZMM04=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 00000000000002c0
ZMM05=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000040
ZMM06=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 5ad39a128767625d 5b0dd0ce44f4fad9
ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 35b316f9f9a31b1a 952d1e1c3ff14a60
ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 c03e3a6d4a5c142b 72ccc48389a960ca
ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 7748ac756be71406 3095a367b2712a53
ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 d99f882ffca16165 1137bbe53d34e0dd
ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ffdf74ca0dc3f091 7657f06190012e2d
ZMM12=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM13=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM14=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 a54ff53a3c6ef372 bb67ae856a09e667
ZMM15=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 5be0cd191f83d9ab 9b05688c510e527f
ZMM16=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM17=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000002e2e
ZMM18=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM19=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM20=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM21=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM22=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM23=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM24=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM25=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM26=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM27=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM28=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM29=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM30=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000
ZMM31=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000