INFO: task syz-executor.5:29448 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.5 state:D stack:26360 pid:29448 ppid: 25794 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_set_status+0x440/0x930 drivers/block/loop.c:1264
loop_set_status_old+0x148/0x1b0 drivers/block/loop.c:1396
lo_ioctl+0x3e9/0x17c0 drivers/block/loop.c:1566
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: 0033:0x7f6ce93e8ae9
RSP: 002b:00007f6ce695e188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f6ce94fbf60 RCX: 00007f6ce93e8ae9
RDX: 0000000020000940 RSI: 0000000000004c02 RDI: 0000000000000004
RBP: 00007f6ce9442f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcba71f6ef R14: 00007f6ce695e300 R15: 0000000000022000
INFO: task syz-executor.5:29457 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.5 state:D stack:26160 pid:29457 ppid: 25794 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
submit_bh_wbc+0x5e8/0x7e0 fs/buffer.c:3054
submit_bh fs/buffer.c:3060 [inline]
block_read_full_page+0xa25/0xda0 fs/buffer.c:2339
filemap_read_page+0x152/0x420 mm/filemap.c:2391
filemap_update_page mm/filemap.c:2470 [inline]
filemap_get_pages+0x14a2/0x1be0 mm/filemap.c:2579
filemap_read+0x315/0xeb0 mm/filemap.c:2642
generic_file_read_iter+0x3b6/0x5a0 mm/filemap.c:2792
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: 0033:0x7f6ce93e8ae9
RSP: 002b:00007f6ce693d188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f6ce94fc020 RCX: 00007f6ce93e8ae9
RDX: 0000000000000000 RSI: 0000000000000004 RDI: 0000000000000004
RBP: 00007f6ce9442f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000424002d9f R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffcba71f6ef R14: 00007f6ce693d300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83ae0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by in:imklog/6217:
#0: ffff8880738154f0 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.5/29448:
#0: ffff88801a9f3360 (&lo->lo_mutex){+.+.}-{3:3}, at: loop_set_status+0x2a/0x930 drivers/block/loop.c:1248
1 lock held by syz-executor.5/29457:
#0: ffff8880110ca108 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:838 [inline]
#0: ffff8880110ca108 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_update_page mm/filemap.c:2441 [inline]
#0: ffff8880110ca108 (mapping.invalidate_lock#2){.+.+}-{3:3}, at: filemap_get_pages+0x10f7/0x1be0 mm/filemap.c:2579
2 locks held by systemd-udevd/29466:
#0: ffff88801a9f7918 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801a9f3360 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
=============================================
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: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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 9434 Comm: kworker/u4:6 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy62 ieee80211_iface_work
RIP: 0010:unwind_get_return_address arch/x86/kernel/unwind_orc.c:318 [inline]
RIP: 0010:unwind_get_return_address+0x46/0x90 arch/x86/kernel/unwind_orc.c:313
Code: 74 04 3c 03 7e 51 8b 03 85 c0 75 05 5b 31 c0 5d c3 48 8d 6b 48 48 b8 00 00 00 00 00 fc ff df 48 89 ea 48 c1 ea 03 80 3c 02 00 <75> 32 48 8b 7b 48 e8 8f 66 19 00 85 c0 74 d3 48 b8 00 00 00 00 00
RSP: 0018:ffffc90002d2f4d8 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: ffffc90002d2f4f0 RCX: 0000000000000000
RDX: 1ffff920005a5ea7 RSI: 0000000000000001 RDI: ffffc90002d2f4f0
RBP: ffffc90002d2f538 R08: ffffffff8e1826b2 R09: 0000000000000001
R10: fffff520005a5ea9 R11: 000000000008808a R12: ffffc90002d2f5a8
R13: 0000000000000000 R14: ffff888074b63a00 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fabd60f7000 CR3: 000000000b88e000 CR4: 0000000000350ef0
Call Trace:
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
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:590 [inline]
kzalloc include/linux/slab.h:724 [inline]
ieee802_11_parse_elems_crc+0xd5/0x1050 net/mac80211/util.c:1471
ieee802_11_parse_elems net/mac80211/ieee80211_i.h:2208 [inline]
ieee80211_bss_info_update+0x42c/0xb30 net/mac80211/scan.c:212
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: 74 04 je 0x6
2: 3c 03 cmp $0x3,%al
4: 7e 51 jle 0x57
6: 8b 03 mov (%rbx),%eax
8: 85 c0 test %eax,%eax
a: 75 05 jne 0x11
c: 5b pop %rbx
d: 31 c0 xor %eax,%eax
f: 5d pop %rbp
10: c3 retq
11: 48 8d 6b 48 lea 0x48(%rbx),%rbp
15: 48 b8 00 00 00 00 00 movabs $0xdffffc0000000000,%rax
1c: fc ff df
1f: 48 89 ea mov %rbp,%rdx
22: 48 c1 ea 03 shr $0x3,%rdx
26: 80 3c 02 00 cmpb $0x0,(%rdx,%rax,1)
* 2a: 75 32 jne 0x5e <-- trapping instruction
2c: 48 8b 7b 48 mov 0x48(%rbx),%rdi
30: e8 8f 66 19 00 callq 0x1966c4
35: 85 c0 test %eax,%eax
37: 74 d3 je 0xc
39: 48 rex.W
3a: b8 00 00 00 00 mov $0x0,%eax