syzkaller login: [ 91.820309][ T10] cfg80211: failed to load regulatory.db
Warning: Permanently added '[localhost]:61150' (ED25519) to the list of known hosts.
executing program
[ 211.375069][ T5342] loop0: detected capacity change from 0 to 256
[ 211.406186][ T5342] exFAT-fs (loop0): failed to load upcase table (idx : 0x00010000, chksum : 0xc61f63e4, utbl_chksum : 0xe619d30d)
[ 434.851013][ T27] INFO: task kworker/u4:2:25 blocked for more than 143 seconds.
[ 434.854488][ T27] Not tainted 6.15.0-rc7-syzkaller-00099-g94305e83eccb #0
[ 434.858596][ T27] "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
[ 434.880831][ T27] task:kworker/u4:2 state:D stack:24520 pid:25 tgid:25 ppid:2 task_flags:0x4208160 flags:0x00004000
[ 434.885800][ T27] Workqueue: writeback wb_workfn (flush-7:0)
[ 434.888417][ T27] Call Trace:
[ 434.889788][ T27]
[ 434.910828][ T27] __schedule+0x16e2/0x4cd0
[ 434.912831][ T27] ? blk_mq_flush_plug_list+0x10e/0x1760
[ 434.915009][ T27] ? __lock_acquire+0xaac/0xd20
[ 434.917053][ T27] ? __pfx_blk_mq_flush_plug_list+0x10/0x10
[ 434.919633][ T27] ? schedule+0x165/0x360
[ 434.931322][ T27] ? __pfx___schedule+0x10/0x10
[ 434.933483][ T27] ? schedule+0x91/0x360
[ 434.935344][ T27] schedule+0x165/0x360
[ 434.937118][ T27] schedule_preempt_disabled+0x13/0x30
[ 434.939323][ T27] __mutex_lock+0x724/0xe80
[ 434.950862][ T27] ? __mutex_lock+0x51b/0xe80
[ 434.952891][ T27] ? exfat_write_inode+0xe8/0x1a0
[ 434.955021][ T27] ? __pfx___mutex_lock+0x10/0x10
[ 434.957166][ T27] exfat_write_inode+0xe8/0x1a0
[ 434.959370][ T27] __writeback_single_inode+0x6f1/0xff0
[ 434.971716][ T27] writeback_sb_inodes+0x6b5/0x1000
[ 434.974437][ T27] ? __pfx_writeback_sb_inodes+0x10/0x10
[ 434.976722][ T27] ? __pfx___up_read+0x10/0x10
[ 434.978702][ T27] __writeback_inodes_wb+0x111/0x240
[ 434.990830][ T27] wb_writeback+0x44f/0xaf0
[ 434.992898][ T27] ? queue_io+0x351/0x590
[ 434.994686][ T27] ? __pfx_wb_writeback+0x10/0x10
[ 434.996829][ T27] wb_workfn+0xaef/0xef0
[ 434.998572][ T27] ? __pfx_wb_workfn+0x10/0x10
[ 435.011320][ T27] ? register_lock_class+0x51/0x320
[ 435.013723][ T27] ? __lock_acquire+0xaac/0xd20
[ 435.015829][ T27] ? process_scheduled_works+0x9ec/0x17a0
[ 435.018281][ T27] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.020421][ T27] ? process_scheduled_works+0x9ec/0x17a0
[ 435.031245][ T27] ? process_scheduled_works+0x9ec/0x17a0
[ 435.033858][ T27] process_scheduled_works+0xadb/0x17a0
[ 435.036521][ T27] ? __pfx_process_scheduled_works+0x10/0x10
[ 435.039030][ T27] worker_thread+0x8a0/0xda0
[ 435.051206][ T27] kthread+0x70e/0x8a0
[ 435.052909][ T27] ? __pfx_worker_thread+0x10/0x10
[ 435.055276][ T27] ? __pfx_kthread+0x10/0x10
[ 435.057613][ T27] ? __pfx_kthread+0x10/0x10
[ 435.059472][ T27] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.080809][ T27] ? lockdep_hardirqs_on+0x9c/0x150
[ 435.082773][ T27] ? __pfx_kthread+0x10/0x10
[ 435.084719][ T27] ret_from_fork+0x4b/0x80
[ 435.086684][ T27] ? __pfx_kthread+0x10/0x10
[ 435.088791][ T27] ret_from_fork_asm+0x1a/0x30
[ 435.100831][ T27]
[ 435.102687][ T27]
[ 435.102687][ T27] Showing all locks held in the system:
[ 435.106034][ T27] 4 locks held by kworker/u4:2/25:
[ 435.108255][ T27] #0: ffff888030f2a148 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x9b1/0x17a0
[ 435.121145][ T27] #1: ffffc900004bfc60 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x9ec/0x17a0
[ 435.125900][ T27] #2: ffff888011b060e0 (&type->s_umount_key#42){.+.+}-{4:4}, at: super_trylock_shared+0x20/0xf0
[ 435.129818][ T27] #3: ffff88801f1bc0e8 (&sbi->s_lock){+.+.}-{4:4}, at: exfat_write_inode+0xe8/0x1a0
[ 435.150826][ T27] 1 lock held by khungtaskd/27:
[ 435.153099][ T27] #0: ffffffff8df3dee0 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180
[ 435.157405][ T27] 2 locks held by getty/5111:
[ 435.159477][ T27] #0: ffff88801fce10a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70
[ 435.181279][ T27] #1: ffffc9000018e2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400
[ 435.186811][ T27] 3 locks held by syz-executor247/5342:
[ 435.188983][ T27]
[ 435.190012][ T27] =============================================
[ 435.190012][ T27]
[ 435.200937][ T27] NMI backtrace for cpu 0
[ 435.200949][ T27] CPU: 0 UID: 0 PID: 27 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller-00099-g94305e83eccb #0 PREEMPT(full)
[ 435.200958][ T27] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 435.200962][ T27] Call Trace:
[ 435.200967][ T27]
[ 435.200971][ T27] dump_stack_lvl+0x189/0x250
[ 435.200983][ T27] ? __wake_up_klogd+0xd9/0x110
[ 435.200993][ T27] ? __pfx_dump_stack_lvl+0x10/0x10
[ 435.201002][ T27] ? __pfx__printk+0x10/0x10
[ 435.201013][ T27] nmi_cpu_backtrace+0x39e/0x3d0
[ 435.201022][ T27] ? __pfx_nmi_cpu_backtrace+0x10/0x10
[ 435.201033][ T27] ? _printk+0xcf/0x120
[ 435.201040][ T27] ? __pfx__printk+0x10/0x10
[ 435.201047][ T27] ? __pfx_nmi_raise_cpu_backtrace+0x10/0x10
[ 435.201057][ T27] nmi_trigger_cpumask_backtrace+0x17a/0x300
[ 435.201065][ T27] watchdog+0xfee/0x1030
[ 435.201075][ T27] ? watchdog+0x1de/0x1030
[ 435.201085][ T27] kthread+0x70e/0x8a0
[ 435.201094][ T27] ? __pfx_watchdog+0x10/0x10
[ 435.201102][ T27] ? __pfx_kthread+0x10/0x10
[ 435.201110][ T27] ? __pfx_kthread+0x10/0x10
[ 435.201121][ T27] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.201132][ T27] ? lockdep_hardirqs_on+0x9c/0x150
[ 435.201144][ T27] ? __pfx_kthread+0x10/0x10
[ 435.201155][ T27] ret_from_fork+0x4b/0x80
[ 435.201163][ T27] ? __pfx_kthread+0x10/0x10
[ 435.201170][ T27] ret_from_fork_asm+0x1a/0x30
[ 435.201181][ T27]
[ 435.201186][ T27] Kernel panic - not syncing: hung_task: blocked tasks
[ 435.259670][ T27] CPU: 0 UID: 0 PID: 27 Comm: khungtaskd Not tainted 6.15.0-rc7-syzkaller-00099-g94305e83eccb #0 PREEMPT(full)
[ 435.264686][ T27] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
[ 435.269044][ T27] Call Trace:
[ 435.270467][ T27]
[ 435.271714][ T27] dump_stack_lvl+0x99/0x250
[ 435.273899][ T27] ? __asan_memcpy+0x40/0x70
[ 435.275763][ T27] ? __pfx_dump_stack_lvl+0x10/0x10
[ 435.278055][ T27] ? __pfx__printk+0x10/0x10
[ 435.280495][ T27] panic+0x2db/0x790
[ 435.282341][ T27] ? __pfx_panic+0x10/0x10
[ 435.284200][ T27] ? nmi_backtrace_stall_check+0x433/0x440
[ 435.286559][ T27] ? irq_work_queue+0xc3/0x140
[ 435.288603][ T27] watchdog+0x102d/0x1030
[ 435.290350][ T27] ? watchdog+0x1de/0x1030
[ 435.292061][ T27] kthread+0x70e/0x8a0
[ 435.293739][ T27] ? __pfx_watchdog+0x10/0x10
[ 435.295625][ T27] ? __pfx_kthread+0x10/0x10
[ 435.297559][ T27] ? __pfx_kthread+0x10/0x10
[ 435.299601][ T27] ? _raw_spin_unlock_irq+0x23/0x50
[ 435.301927][ T27] ? lockdep_hardirqs_on+0x9c/0x150
[ 435.304058][ T27] ? __pfx_kthread+0x10/0x10
[ 435.305857][ T27] ret_from_fork+0x4b/0x80
[ 435.307624][ T27] ? __pfx_kthread+0x10/0x10
[ 435.309384][ T27] ret_from_fork_asm+0x1a/0x30
[ 435.311249][ T27]
[ 435.312794][ T27] Kernel Offset: disabled
[ 435.314660][ T27] Rebooting in 86400 seconds..
VM DIAGNOSIS:
17:32:47 Registers:
info registers vcpu 0
CPU#0
RAX=0000000000000030 RBX=0000000000000030 RCX=0000000000000000 RDX=00000000000003f8
RSI=0000000000000000 RDI=0000000000000020 RBP=00000000000003f8 RSP=ffffc900004ef770
R8 =ffff888000ca0237 R9 =1ffff11000194046 R10=dffffc0000000000 R11=ffffffff853e1810
R12=dffffc0000000000 R13=ffffffff99850c80 R14=ffffffff99b55c40 R15=0000000000000000
RIP=ffffffff853e188c 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=0000559cea4a4168 CR3=000000003f634000 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 15095e12234482c6 427f2b08f3c27e0a
ZMM01=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 cc397a7cd5e92ac2 23846166a191853f
ZMM02=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 88deb36203a93a04 92835737017c4c4d
ZMM03=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 5e4e5b5da2312fa7 4caa7bc238ca2dc9
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 942144e956d0834f 1edcfc269ad3d947
ZMM07=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 1596f3f694c0c24a 7f6c114548b53778
ZMM08=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 a4a3117776abe0b8 4333ef453c33829c
ZMM09=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 ca9998aae9ca987e c59b4bcfcf0fdd6f
ZMM10=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 2ed1a2b380318d48 8f27ab30574c7725
ZMM11=0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0000000000000000 0c2280ec9a89934a f4bb4d799dd38b16
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