INFO: task syz-executor.2:11944 blocked for more than 143 seconds.
Not tainted 5.16.0-rc1-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28328 pid:11944 ppid: 9516 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xa9a/0x4940 kernel/sched/core.c:6253
schedule+0xd2/0x260 kernel/sched/core.c:6326
blk_mq_freeze_queue_wait+0x112/0x160 block/blk-mq.c:178
nbd_add_socket+0x166/0x810 drivers/block/nbd.c:1109
__nbd_ioctl drivers/block/nbd.c:1454 [inline]
nbd_ioctl+0x38c/0xb10 drivers/block/nbd.c:1511
blkdev_ioctl+0x37a/0x800 block/ioctl.c:609
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:874 [inline]
__se_sys_ioctl fs/ioctl.c:860 [inline]
__x64_sys_ioctl+0x193/0x200 fs/ioctl.c:860
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7f194f601ae9
RSP: 002b:00007f194cb77188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f194f714f60 RCX: 00007f194f601ae9
RDX: 0000000000000008 RSI: 000000000000ab00 RDI: 0000000000000007
RBP: 00007f194f65bf6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdfc2f265f R14: 00007f194cb77300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6220:
2 locks held by agetty/6444:
#0: ffff88801cb21098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002a2c2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
1 lock held by syz-executor.2/11944:
#0: ffff88801ab55198 (&nbd->config_lock){+.+.}-{3:3}, at: nbd_ioctl+0x151/0xb10 drivers/block/nbd.c:1504
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x47/0x144 lib/nmi_backtrace.c:105
nmi_trigger_cpumask_backtrace+0x1ae/0x220 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:146 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:295
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 10774 Comm: kworker/u4:8 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy9 ieee80211_iface_work
RIP: 0010:get_stack_info_noinstr+0x14/0x120 arch/x86/kernel/dumpstack_64.c:173
Code: 66 b0 76 00 5d 41 5c e9 6a 2c 00 00 cc cc cc cc cc cc cc cc cc cc 41 55 41 54 49 89 fc 55 48 89 d5 53 48 89 f3 e8 0c 01 00 00 <84> c0 75 0e 65 48 8b 14 25 40 70 02 00 48 39 d3 74 07 5b 5d 41 5c
RSP: 0018:ffffc90002b7f2b8 EFLAGS: 00000212
RAX: 0000000000000001 RBX: ffff8880235eba00 RCX: ffffc90002b80000
RDX: ffffc90002b7f358 RSI: ffff8880235eba00 RDI: ffffc90002b7f308
RBP: ffffc90002b7f358 R08: 0000000000000001 R09: ffffc90002b7f358
R10: fffff5200056fe76 R11: 0000000000000000 R12: ffffc90002b7f308
R13: ffffc90002b7f358 R14: ffffc90002b7f390 R15: ffffc90002b7f358
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f5a596b5030 CR3: 000000000b88e000 CR4: 0000000000350ee0
Call Trace:
get_stack_info+0x2d/0x90 arch/x86/kernel/dumpstack_64.c:199
__unwind_start+0x4ae/0x800 arch/x86/kernel/unwind_orc.c:681
unwind_start arch/x86/include/asm/unwind.h:64 [inline]
arch_stack_walk+0x5c/0xe0 arch/x86/kernel/stacktrace.c:24
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x50 mm/kasan/common.c:38
kasan_set_track mm/kasan/common.c:46 [inline]
set_alloc_info mm/kasan/common.c:434 [inline]
____kasan_kmalloc mm/kasan/common.c:513 [inline]
____kasan_kmalloc mm/kasan/common.c:472 [inline]
__kasan_kmalloc+0xa9/0xd0 mm/kasan/common.c:522
kmalloc include/linux/slab.h:595 [inline]
kzalloc include/linux/slab.h:724 [inline]
cfg80211_inform_single_bss_frame_data+0x302/0xee0 net/wireless/scan.c:2397
cfg80211_inform_bss_frame_data+0xa7/0xb50 net/wireless/scan.c:2458
ieee80211_bss_info_update+0x35b/0xb30 net/mac80211/scan.c:190
ieee80211_rx_bss_info net/mac80211/ibss.c:1119 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
ieee80211_ibss_rx_queued_mgmt+0x19cf/0x3130 net/mac80211/ibss.c:1639
ieee80211_iface_process_skb net/mac80211/iface.c:1466 [inline]
ieee80211_iface_work+0xa65/0xd00 net/mac80211/iface.c:1520
process_one_work+0x9b2/0x1690 kernel/workqueue.c:2298
worker_thread+0x658/0x11f0 kernel/workqueue.c:2445
kthread+0x405/0x4f0 kernel/kthread.c:327
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 66 b0 76 data16 mov $0x76,%al
3: 00 5d 41 add %bl,0x41(%rbp)
6: 5c pop %rsp
7: e9 6a 2c 00 00 jmpq 0x2c76
c: cc int3
d: cc int3
e: cc int3
f: cc int3
10: cc int3
11: cc int3
12: cc int3
13: cc int3
14: cc int3
15: cc int3
16: 41 55 push %r13
18: 41 54 push %r12
1a: 49 89 fc mov %rdi,%r12
1d: 55 push %rbp
1e: 48 89 d5 mov %rdx,%rbp
21: 53 push %rbx
22: 48 89 f3 mov %rsi,%rbx
25: e8 0c 01 00 00 callq 0x136
* 2a: 84 c0 test %al,%al <-- trapping instruction
2c: 75 0e jne 0x3c
2e: 65 48 8b 14 25 40 70 mov %gs:0x27040,%rdx
35: 02 00
37: 48 39 d3 cmp %rdx,%rbx
3a: 74 07 je 0x43
3c: 5b pop %rbx
3d: 5d pop %rbp
3e: 41 5c pop %r12