INFO: task syz-executor.4:26713 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.4 state:D stack:25952 pid:26713 ppid: 20567 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_bio_wait+0x106/0x230 block/bio.c:1254
blkdev_issue_flush+0xd6/0x130 block/blk-flush.c:458
blkdev_fsync+0x68/0xa0 block/fops.c:474
vfs_fsync_range+0x13a/0x220 fs/sync.c:182
generic_write_sync include/linux/fs.h:2956 [inline]
blkdev_write_iter+0x552/0x690 block/fops.c:559
call_write_iter include/linux/fs.h:2162 [inline]
do_iter_readv_writev+0x472/0x750 fs/read_write.c:725
do_iter_write+0x188/0x710 fs/read_write.c:851
vfs_iter_write+0x70/0xa0 fs/read_write.c:892
iter_file_splice_write+0x723/0xc70 fs/splice.c:689
do_splice_from fs/splice.c:767 [inline]
direct_splice_actor+0x110/0x180 fs/splice.c:936
splice_direct_to_actor+0x34b/0x8c0 fs/splice.c:891
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: 0033:0x7f68751fdae9
RSP: 002b:00007f6872752188 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f6875311020 RCX: 00007f68751fdae9
RDX: 0000000000000000 RSI: 0000000000000006 RDI: 0000000000000006
RBP: 00007f6875257f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000024002da8 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd32497df R14: 00007f6872752300 R15: 0000000000022000
INFO: task syz-executor.4:26719 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.4 state:D stack:28256 pid:26719 ppid: 20567 flags:0x00000004
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: 0033:0x7f68751fdae9
RSP: 002b:00007f6872731188 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f68753110e0 RCX: 00007f68751fdae9
RDX: 0000000000000000 RSI: 0000000000004c01 RDI: 0000000000000006
RBP: 00007f6875257f6d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdd32497df R14: 00007f6872731300 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
2 locks held by systemd-udevd/2967:
#0: ffff88801aa3b118 (&disk->open_mutex){+.+.}-{3:3}, at: blkdev_get_by_dev.part.0+0x9b/0xb50 block/bdev.c:819
#1: ffff88801aa1eb60 (&lo->lo_mutex){+.+.}-{3:3}, at: lo_open+0x75/0x120 drivers/block/loop.c:1733
1 lock held by in:imklog/6205:
#0: ffff888072959c70 (&f->f_pos_lock){+.+.}-{3:3}, at: __fdget_pos+0xe9/0x100 fs/file.c:990
1 lock held by syz-executor.4/26719:
#0: ffff88801aa1eb60 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0x7a/0x1070 drivers/block/loop.c:1106
=============================================
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: 19920 Comm: kworker/u4:9 Not tainted 5.16.0-rc1-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy57 ieee80211_iface_work
RIP: 0010:check_preemption_disabled+0xd/0x170 lib/smp_processor_id.c:13
Code: 8b 3c 25 40 70 02 00 e8 51 f0 00 f8 eb 99 0f 1f 44 00 00 0f 0b e9 23 ff ff ff cc cc cc 41 56 41 55 49 89 f5 41 54 55 48 89 fd <53> 0f 1f 44 00 00 65 44 8b 25 7d dc af 76 65 8b 1d ee 36 b0 76 81
RSP: 0018:ffffc90002e8f880 EFLAGS: 00000002
RAX: 0000000000000001 RBX: ffffffff81beab88 RCX: 0000000000000001
RDX: 0000000000000000 RSI: ffffffff89ac0c00 RDI: ffffffff8a051760
RBP: ffffffff8a051760 R08: 00000000fc6a6d20 R09: 0000000069f0e0ef
R10: fffff520005d1ebc R11: 000000000008808a R12: ffff888010c41dc0
R13: ffffffff89ac0c00 R14: ffffc90002e8f990 R15: ffff888082005000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fdcfaf5a0a0 CR3: 000000000b88e000 CR4: 0000000000350ee0
Call Trace:
lockdep_hardirqs_off+0x90/0xd0 kernel/locking/lockdep.c:4393
trace_hardirqs_off+0x13/0x1b0 kernel/trace/trace_preemptirq.c:76
kasan_quarantine_put+0xa8/0x210 mm/kasan/quarantine.c:193
kasan_slab_free include/linux/kasan.h:235 [inline]
slab_free_hook mm/slub.c:1723 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kfree+0xf6/0x560 mm/slub.c:4561
ieee80211_bss_info_update+0x536/0xb30 net/mac80211/scan.c:232
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: 8b 3c 25 40 70 02 00 mov 0x27040,%edi
7: e8 51 f0 00 f8 callq 0xf800f05d
c: eb 99 jmp 0xffffffa7
e: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
13: 0f 0b ud2
15: e9 23 ff ff ff jmpq 0xffffff3d
1a: cc int3
1b: cc int3
1c: cc int3
1d: 41 56 push %r14
1f: 41 55 push %r13
21: 49 89 f5 mov %rsi,%r13
24: 41 54 push %r12
26: 55 push %rbp
27: 48 89 fd mov %rdi,%rbp
* 2a: 53 push %rbx <-- trapping instruction
2b: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
30: 65 44 8b 25 7d dc af mov %gs:0x76afdc7d(%rip),%r12d # 0x76afdcb5
37: 76
38: 65 8b 1d ee 36 b0 76 mov %gs:0x76b036ee(%rip),%ebx # 0x76b0372d
3f: 81 .byte 0x81