INFO: task syz-executor.2:19788 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:25144 pid:19788 ppid: 6544 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
__bio_queue_enter+0x3c5/0x6a0 block/blk-core.c:441
bio_queue_enter block/blk.h:91 [inline]
blk_mq_get_request block/blk-mq.c:2588 [inline]
blk_mq_submit_bio+0x4ae/0x22c0 block/blk-mq.c:2632
__submit_bio block/blk-core.c:849 [inline]
__submit_bio_noacct_mq block/blk-core.c:924 [inline]
submit_bio_noacct block/blk-core.c:950 [inline]
submit_bio_noacct+0x82c/0xa20 block/blk-core.c:939
submit_bio block/blk-core.c:1011 [inline]
submit_bio+0x1ea/0x430 block/blk-core.c:969
__blkdev_direct_IO_simple+0x4a2/0x860 block/fops.c:103
blkdev_direct_IO block/fops.c:383 [inline]
blkdev_direct_IO+0x7fb/0x1740 block/fops.c:373
generic_file_read_iter+0x251/0x5a0 mm/filemap.c:2769
blkdev_read_iter+0xf8/0x1d0 block/fops.c:583
call_read_iter include/linux/fs.h:2156 [inline]
generic_file_splice_read+0x453/0x6d0 fs/splice.c:311
do_splice_to+0x1bf/0x250 fs/splice.c:796
splice_direct_to_actor+0x2c2/0x8c0 fs/splice.c:870
do_splice_direct+0x1b3/0x280 fs/splice.c:979
do_sendfile+0xaf2/0x1250 fs/read_write.c:1245
__do_sys_sendfile64 fs/read_write.c:1310 [inline]
__se_sys_sendfile64 fs/read_write.c:1296 [inline]
__x64_sys_sendfile64+0x1cc/0x210 fs/read_write.c:1296
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: 0033:0x7f6be876fae9
RSP: 002b:00007f6be5ce5188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f6be8882f60 RCX: 00007f6be876fae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f6be87c9f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da8 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1f31900f R14: 00007f6be5ce5300 R15: 0000000000022000
INFO: task syz-executor.2:19799 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:27576 pid:19799 ppid: 6544 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
__loop_clr_fd+0x1ae/0x1070 drivers/block/loop.c:1122
loop_clr_fd drivers/block/loop.c:1237 [inline]
lo_ioctl+0x398/0x17c0 drivers/block/loop.c:1562
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: 0033:0x7f6be876fae9
RSP: 002b:00007f6be5cc4188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6be8883020 RCX: 00007f6be876fae9
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000004
RBP: 00007f6be87c9f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff1f31900f R14: 00007f6be5cc4300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by ksoftirqd/0/13:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
1 lock held by khungtaskd/27:
#0: ffffffff8bb83b60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by systemd-udevd/2970:
#0: ffff88801aac0918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801a9ed360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
1 lock held by in:imklog/6225:
#0: ffff88802146f9f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.2/19799:
#0: ffff88801a9ed360 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0x7a/0x1070 drivers/block/loop.c:1106
=============================================
NMI backtrace for cpu 1
CPU: 1 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:111
nmi_trigger_cpumask_backtrace+0x1b3/0x230 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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12455 Comm: kworker/u4:16 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy4 ieee80211_iface_work
RIP: 0010:get_partial_node mm/slub.c:2140 [inline]
RIP: 0010:get_partial mm/slub.c:2252 [inline]
RIP: 0010:___slab_alloc+0x7dd/0xfe0 mm/slub.c:3017
Code: 49 8d 62 f8 c3 e8 63 07 c0 ff e9 d3 fb ff ff 65 8b 05 e7 81 45 7e 48 98 49 8b b4 c4 d0 00 00 00 48 85 f6 74 28 48 83 7e 40 00 <74> 21 8b 8d 60 ff ff ff 48 8d 95 78 ff ff ff 4c 89 e7 e8 1c f5 ff
RSP: 0018:ffffc90004a9f7e0 EFLAGS: 00000202
RAX: 0000000000000000 RBX: ffff8880b9c3d4a0 RCX: 1ffffffff1ff2f8e
RDX: 0000000000000000 RSI: ffff888010c403c0 RDI: 0000000000000000
RBP: ffffc90004a9f8c0 R08: 0000000000000001 R09: ffffffff8ff71a67
R10: 0000000000000001 R11: 000000000008808a R12: ffff888010c41640
R13: 00000000ffffffff R14: 0000000000000000 R15: ffffea0000741140
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1fe462c060 CR3: 000000000b88e000 CR4: 0000000000350ef0
Call Trace:
__slab_alloc.constprop.0+0x4d/0xa0 mm/slub.c:3109
slab_alloc_node mm/slub.c:3200 [inline]
slab_alloc mm/slub.c:3242 [inline]
__kmalloc+0x2fb/0x340 mm/slub.c:4419
kmalloc include/linux/slab.h:595 [inline]
ieee802_11_parse_elems_crc+0x14d/0x1050 net/mac80211/util.c:1477
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2208 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1605 [inline]
ieee80211_ibss_rx_queued_mgmt+0xd0e/0x3130 net/mac80211/ibss.c:1639
ieee80211_iface_process_skb net/mac80211/iface.c:1468 [inline]
ieee80211_iface_work+0xa65/0xd00 net/mac80211/iface.c:1522
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: 49 8d 62 f8 lea -0x8(%r10),%rsp
4: c3 retq
5: e8 63 07 c0 ff callq 0xffc0076d
a: e9 d3 fb ff ff jmpq 0xfffffbe2
f: 65 8b 05 e7 81 45 7e mov %gs:0x7e4581e7(%rip),%eax # 0x7e4581fd
16: 48 98 cltq
18: 49 8b b4 c4 d0 00 00 mov 0xd0(%r12,%rax,8),%rsi
1f: 00
20: 48 85 f6 test %rsi,%rsi
23: 74 28 je 0x4d
25: 48 83 7e 40 00 cmpq $0x0,0x40(%rsi)
* 2a: 74 21 je 0x4d <-- trapping instruction
2c: 8b 8d 60 ff ff ff mov -0xa0(%rbp),%ecx
32: 48 8d 95 78 ff ff ff lea -0x88(%rbp),%rdx
39: 4c 89 e7 mov %r12,%rdi
3c: e8 .byte 0xe8
3d: 1c f5 sbb $0xf5,%al
3f: ff .byte 0xff