z� jz/w$(>T |h3 7`(*xk"GzRAoOź:m@dc~້]F#<HKS_ } &4ҽ: B@YaH{Iȃ1/t683-HӇ՟O6dg;zGX4W6Bg\"\V[1C c[H+QKl,NJTt0 O3 ~7T7i[ 234.907471][T11482]
BJ* M<O[ 234.908368][T11482] ======================================================
b42٬ x/[ 234.911186][T11482] WARNING: possible circular locking dependency detected
ϭ:+މ3l"0[ 234.913886][T11482] 6.15.0-syzkaller-10402-g4cb6c8af8591 #0 Not tainted
ZdO#̵G<'[ 234.917367][T11482] ------------------------------------------------------
-P%pmxB?=[ 234.921230][T11482] syz.2.1726/11482 is trying to acquire lock:
̞ K;m$[ 234.947847][T11482] nbd_config_put+0x31/0x750 drivers/block/nbd.c:1423
8I@;͊[ 234.950419][T11482] nbd_release+0xb7/0x190 drivers/block/nbd.c:1735
rmDD"eр>w[ 234.952630][T11482] blkdev_put_whole+0xad/0xf0 block/bdev.c:721
j&/ oci!i[ 234.954759][T11482] bdev_release+0x47e/0x6d0 block/bdev.c:1144
P_yQ23@ S[ 234.956801][T11482] blkdev_release+0x15/0x20 block/fops.c:684
vyAe] Q3L.p[ 234.958866][T11482] __fput+0x402/0xb70 fs/file_table.c:465
9^:l ~[ 234.960790][T11482] fput_close_sync+0x118/0x260 fs/file_table.c:570
Xz~M&[ 234.963382][T11482] __do_sys_close fs/open.c:1589 [inline]
Xz~M&[ 234.963382][T11482] __se_sys_close fs/open.c:1574 [inline]
Xz~M&[ 234.963382][T11482] __x64_sys_close+0x8b/0x120 fs/open.c:1574
H~h !cN'[ 234.965568][T11482] do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
H~h !cN'[ 234.965568][T11482] do_syscall_64+0xcd/0x490 arch/x86/entry/syscall_64.c:94
оZ8í aπL[ 234.967679][T11482] entry_SYSCALL_64_after_hwframe+0x77/0x7f
R%(ޅ]Z[ 234.970149][T11482]
GӅԖj[ 234.973111][T11482] __mutex_lock_common kernel/locking/mutex.c:601 [inline]
GӅԖj[ 234.973111][T11482] __mutex_lock+0x199/0xb90 kernel/locking/mutex.c:746
3D C9 [ 234.975247][T11482] __del_gendisk+0xf5/0xbd0 block/genhd.c:706
R8 M2xZ[ 234.977457][T11482] del_gendisk+0x13e/0x1e0 block/genhd.c:819
b%#R|f[ 234.979465][T11482] loop_remove drivers/block/loop.c:2081 [inline]
b%#R|f[ 234.979465][T11482] loop_control_remove drivers/block/loop.c:2140 [inline]
b%#R|f[ 234.979465][T11482] loop_control_ioctl+0x4eb/0x630 drivers/block/loop.c:2178
䷓l_I\G_b[ 234.981839][T11482] __do_compat_sys_ioctl fs/ioctl.c:1005 [inline]
䷓l_I\G_b[ 234.981839][T11482] __se_compat_sys_ioctl fs/ioctl.c:948 [inline]
䷓l_I\G_b[ 234.981839][T11482] __ia32_compat_sys_ioctl+0x23f/0x370 fs/ioctl.c:948
hVi?NfgVBp[ 234.984163][T11482] do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
hVi?NfgVBp[ 234.984163][T11482] __do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
I+ h9? [ 234.986400][T11482] do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
Mvs>'p[ 234.988602][T11482] entry_SYSENTER_compat_after_hwframe+0x84/0x8e
MXsQ.`l[ 234.991286][T11482]
qxIz4Rg[[ 234.994371][T11482] check_prev_add kernel/locking/lockdep.c:3168 [inline]
qxIz4Rg[[ 234.994371][T11482] check_prevs_add kernel/locking/lockdep.c:3287 [inline]
qxIz4Rg[[ 234.994371][T11482] validate_chain kernel/locking/lockdep.c:3911 [inline]
qxIz4Rg[[ 234.994371][T11482] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240
Ҫa_^AHzz/[ 234.996519][T11482] lock_acquire kernel/locking/lockdep.c:5871 [inline]
Ҫa_^AHzz/[ 234.996519][T11482] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
f2=aheRW[ 234.998553][T11482] down_write+0x92/0x200 kernel/locking/rwsem.c:1577
5:
&6k,c[ 235.000504][T11482] blk_mq_update_nr_hw_queues+0x32/0xcb0 block/blk-mq.c:5041
#VIVHF[ 235.002954][T11482] nbd_start_device+0x172/0xcd0 drivers/block/nbd.c:1476
`
W[ 235.005099][T11482] nbd_start_device_ioctl drivers/block/nbd.c:1527 [inline]
W[ 235.005099][T11482] __nbd_ioctl drivers/block/nbd.c:1602 [inline]
W[ 235.005099][T11482] nbd_ioctl+0x219/0xda0 drivers/block/nbd.c:1642
Vo&WlIir[ 235.007199][T11482] compat_blkdev_ioctl+0x2ee/0x7a0 block/ioctl.c:760
dc [ 235.009416][T11482] __do_compat_sys_ioctl fs/ioctl.c:1005 [inline]
dc [ 235.009416][T11482] __se_compat_sys_ioctl fs/ioctl.c:948 [inline]
dc [ 235.009416][T11482] __ia32_compat_sys_ioctl+0x23f/0x370 fs/ioctl.c:948
2-ed[ 235.011817][T11482] do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
2-ed[ 235.011817][T11482] __do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
D*.=8[ 235.014044][T11482] do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
; ?w1)[ 235.016183][T11482] entry_SYSENTER_compat_after_hwframe+0x84/0x8e
n߱[uyS Wq[ 235.018768][T11482]
5'Zbʌ0ym[ 235.022468][T11482] Chain exists of:
:}kk |V[ 235.027258][T11482] Possible unsafe locking scenario:
ג;%+ l;H[ 235.030064][T11482] CPU0 CPU1
# oF J[ 235.032316][T11482] ---- ----
;
!Yge4[ 235.034467][T11482] lock(&nbd->config_lock);
<;ύ#~[ 235.036367][T11482] lock(&disk->open_mutex);
OpL}q(Q [ 235.039016][T11482] lock(&nbd->config_lock);
;gj< N%[ 235.041733][T11482] lock(&set->update_nr_hwq_lock);
Q=@~NHN߄04[ 235.043812][T11482]
gū[ 235.046785][T11482] 1 lock held by syz.2.1726/11482:
G,S0l,Ðwm"[ 235.048846][T11482] #0: ffff888022f0b230 (&nbd->config_lock){+.+.}-{4:4}, at: nbd_ioctl+0x150/0xda0 drivers/block/nbd.c:1635
;o 涠[ 235.052525][T11482]
`H7vIj϶U( [ 235.055507][T11482] CPU: 0 UID: 0 PID: 11482 Comm: syz.2.1726 Not tainted 6.15.0-syzkaller-10402-g4cb6c8af8591 #0 PREEMPT(full)
cޗYmO[A[ 235.055528][T11482] Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014
Yɜ0π`;W[ 235.055536][T11482] Call Trace:
d!xX~# [ 235.055541][T11482] <TASK>
; `VH[ 235.055547][T11482] __dump_stack lib/dump_stack.c:94 [inline]
; `VH[ 235.055547][T11482] dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
dU+ *[ 235.055563][T11482] print_circular_bug+0x275/0x350 kernel/locking/lockdep.c:2046
us^[6;מ9[<[ 235.055603][T11482] check_prev_add kernel/locking/lockdep.c:3168 [inline]
us^[6;מ9[<[ 235.055603][T11482] check_prevs_add kernel/locking/lockdep.c:3287 [inline]
us^[6;מ9[<[ 235.055603][T11482] validate_chain kernel/locking/lockdep.c:3911 [inline]
us^[6;מ9[<[ 235.055603][T11482] __lock_acquire+0x126f/0x1c90 kernel/locking/lockdep.c:5240
*I41=[ 235.055617][T11482] lock_acquire kernel/locking/lockdep.c:5871 [inline]
*I41=[ 235.055617][T11482] lock_acquire+0x179/0x350 kernel/locking/lockdep.c:5828
E0AϝPn][ 235.055645][T11482] ? __pfx___might_resched+0x10/0x10 kernel/sched/core.c:5899
-Y͌@z=[ 235.055677][T11482] down_write+0x92/0x200 kernel/locking/rwsem.c:1577
8ސ[ 235.055690][T11482] ? blk_mq_update_nr_hw_queues+0x32/0xcb0 block/blk-mq.c:5041
[w+ؿbMU[ 235.055718][T11482] ? __mutex_lock_common kernel/locking/mutex.c:611 [inline]
[w+ؿbMU[ 235.055718][T11482] ? __mutex_lock+0x1ca/0xb90 kernel/locking/mutex.c:746
le*4x �[ 235.055752][T11482] blk_mq_update_nr_hw_queues+0x32/0xcb0 block/blk-mq.c:5041
8Xp|&d_[ 235.055767][T11482] ? __pfx___mutex_lock+0x10/0x10 usercopy_64.c:-1
ʚֵ->E[ 235.055797][T11482] nbd_start_device+0x172/0xcd0 drivers/block/nbd.c:1476
k]Pת _pv[ 235.055814][T11482] ? bpf_lsm_capable+0x9/0x10 include/linux/lsm_hook_defs.h:44
S.R^fx,^[ 235.055843][T11482] ? __pfx_nbd_ioctl+0x10/0x10 drivers/block/nbd.c:828
}mV5p/ӯY[ 235.055862][T11482] ? find_held_lock+0x2b/0x80 kernel/locking/lockdep.c:5353
Nǐ S 9i`P[ 235.055891][T11482] compat_blkdev_ioctl+0x2ee/0x7a0 block/ioctl.c:760
!(m[,|"F[ 235.055904][T11482] ? __pfx_compat_blkdev_ioctl+0x10/0x10 block/ioctl.c:702
w]e4w~h[ 235.055931][T11482] __do_compat_sys_ioctl fs/ioctl.c:1005 [inline]
w]e4w~h[ 235.055931][T11482] __se_compat_sys_ioctl fs/ioctl.c:948 [inline]
w]e4w~h[ 235.055931][T11482] __ia32_compat_sys_ioctl+0x23f/0x370 fs/ioctl.c:948
29 bڬ[ 235.055950][T11482] do_syscall_32_irqs_on arch/x86/entry/syscall_32.c:83 [inline]
29 bڬ[ 235.055950][T11482] __do_fast_syscall_32+0x7c/0x3a0 arch/x86/entry/syscall_32.c:306
@ׯ? T[ 235.055964][T11482] do_fast_syscall_32+0x32/0x80 arch/x86/entry/syscall_32.c:331
R>KyZ+bt[ 235.055977][T11482] entry_SYSENTER_compat_after_hwframe+0x84/0x8e
ڞ W-bQՊ [ 235.055992][T11482] RIP: 0023:0xf7fc5579
~fi�hv^|/[ 235.056012][T11482] RSP: 002b:00000000f50e655c EFLAGS: 00000296 ORIG_RAX: 0000000000000036
x$,Y 㣖[ 235.056023][T11482] RAX: ffffffffffffffda RBX: 0000000000000003 RCX: 000000000000ab03
AɴVGHL[ 235.056030][T11482] RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
SMK*S u[ 235.056036][T11482] RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
Lݭ8*1m&Q[ 235.056049][T11482] R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
pϿ5=X
:==B>];oF j+XsmogIOP�瀎p=w 姩!z�[ȭׂG$[�niUJ\BǯJz䐲GYE]Apaxe &1]/hKDRkZ*Ek7ܪc , k*u?'rϓkV}'reSJަkpᄔR $H$. ā<WG@?^'!a)�鈏}"ܩXxɉR GB;j a:N!&8BrS|'V~z04`e u*wBJѻQ͇bH12$saئrq{SαEM< ?N1j ҳձD%KK _рmLؒYͼ_QM㇡;\*Pt3+|Sn l?(CGv_0 ؔ٧x}"-R!Ok/Sw&]-z~ L /' ATH%
;gz&(M= caD=iYGCӫ[>`{^DY ۆIdmy/kQmң9t� FVܐ|A\`KGJ%.R Dh)T"/0KhB&ƈJ+a
z9Y2z dX[E
SYZFAIL: failed to recv rpc
fd=3 want=4 recv=0 n=0 (errno 9: Bad file descriptor)
E<rV 9 'Nuxq=x mTlz=cpz>JiVAoUm4T[->`g-;3e-4$녋6#<��[ 235.199512][T11481] netlink: 4 bytes leftover after parsing attributes in process `syz.6.1727'.