INFO: task syz-executor.4:3636 blocked for more than 143 seconds.
Not tainted 5.16.0-next-20220113-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:23696 pid: 3636 ppid: 1 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6428
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
fuse_lock_inode+0xce/0x100 fs/fuse/inode.c:463
fuse_lookup.part.0+0x86/0x390 fs/fuse/dir.c:426
fuse_lookup+0x70/0x90 fs/fuse/dir.c:423
__lookup_slow+0x24c/0x480 fs/namei.c:1707
lookup_slow fs/namei.c:1724 [inline]
walk_component+0x40f/0x6a0 fs/namei.c:2020
link_path_walk.part.0+0x7ef/0xf70 fs/namei.c:2347
link_path_walk fs/namei.c:2272 [inline]
path_openat+0x266/0x2940 fs/namei.c:3605
do_filp_open+0x1aa/0x400 fs/namei.c:3636
do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
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: 0033:0x7f913eed09f8
RSP: 002b:00007fff2642dcf0 EFLAGS: 00000287 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00000000000011b5 RCX: 00007f913eed09f8
RDX: 0000000000090800 RSI: 00007f913ef2a28e RDI: 00000000ffffff9c
RBP: 00007fff2642ddbc R08: 0000000000090800 R09: 00007f913ef2a28e
R10: 0000000000000000 R11: 0000000000000287 R12: 0000000000000000
R13: 00000000000c0685 R14: 000000000000000e R15: 00007fff2642de20
INFO: task syz-executor.4:31753 can't die for more than 143 seconds.
task:syz-executor.4 state:D stack:27192 pid:31753 ppid: 3636 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
request_wait_answer+0x49e/0x840 fs/fuse/dev.c:411
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x58a/0xcd0 fs/fuse/dev.c:515
fuse_lookup_name+0x280/0x630 fs/fuse/dir.c:386
fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:427
fuse_lookup+0x70/0x90 fs/fuse/dir.c:423
__lookup_slow+0x24c/0x480 fs/namei.c:1707
lookup_slow fs/namei.c:1724 [inline]
walk_component+0x40f/0x6a0 fs/namei.c:2020
link_path_walk.part.0+0x7ef/0xf70 fs/namei.c:2347
link_path_walk fs/namei.c:2272 [inline]
path_openat+0x266/0x2940 fs/namei.c:3605
do_filp_open+0x1aa/0x400 fs/namei.c:3636
do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
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: 0033:0x7f913eed0eb9
RSP: 002b:00007f913d804168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f913efe4100 RCX: 00007f913eed0eb9
RDX: 0000000000000042 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007f913ef2b08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff2642daff R14: 00007f913d804300 R15: 0000000000022000
INFO: task syz-executor.4:31753 blocked for more than 144 seconds.
Not tainted 5.16.0-next-20220113-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:27192 pid:31753 ppid: 3636 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4986 [inline]
__schedule+0xab2/0x4e90 kernel/sched/core.c:6296
schedule+0xd2/0x260 kernel/sched/core.c:6369
request_wait_answer+0x49e/0x840 fs/fuse/dev.c:411
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x58a/0xcd0 fs/fuse/dev.c:515
fuse_lookup_name+0x280/0x630 fs/fuse/dir.c:386
fuse_lookup.part.0+0xdf/0x390 fs/fuse/dir.c:427
fuse_lookup+0x70/0x90 fs/fuse/dir.c:423
__lookup_slow+0x24c/0x480 fs/namei.c:1707
lookup_slow fs/namei.c:1724 [inline]
walk_component+0x40f/0x6a0 fs/namei.c:2020
link_path_walk.part.0+0x7ef/0xf70 fs/namei.c:2347
link_path_walk fs/namei.c:2272 [inline]
path_openat+0x266/0x2940 fs/namei.c:3605
do_filp_open+0x1aa/0x400 fs/namei.c:3636
do_sys_openat2+0x16d/0x4d0 fs/open.c:1214
do_sys_open fs/open.c:1230 [inline]
__do_sys_openat fs/open.c:1246 [inline]
__se_sys_openat fs/open.c:1241 [inline]
__x64_sys_openat+0x13f/0x1f0 fs/open.c:1241
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: 0033:0x7f913eed0eb9
RSP: 002b:00007f913d804168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f913efe4100 RCX: 00007f913eed0eb9
RDX: 0000000000000042 RSI: 0000000020002080 RDI: ffffffffffffff9c
RBP: 00007f913ef2b08d R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fff2642daff R14: 00007f913d804300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb833a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
3 locks held by kworker/u4:4/985:
#0: ffff8880b9c39c58 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:489
#1: ffffc90004d87da8 ((kfence_timer).work){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
#2: ffffffff8bb833a0 (rcu_read_lock){....}-{1:2}, at: trace_sched_stat_runtime include/trace/events/sched.h:517 [inline]
#2: ffffffff8bb833a0 (rcu_read_lock){....}-{1:2}, at: update_curr+0x370/0x900 kernel/sched/fair.c:876
2 locks held by getty/3285:
#0: ffff88807f2a0098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b632e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2077
2 locks held by syz-executor.4/3636:
#0: ffff88803537e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:787 [inline]
#0: ffff88803537e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1723 [inline]
#0: ffff88803537e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x400/0x6a0 fs/namei.c:2020
#1: ffff88803537eaf8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xce/0x100 fs/fuse/inode.c:463
2 locks held by syz-executor.4/31753:
#0: ffff88803537e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:787 [inline]
#0: ffff88803537e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: lookup_slow fs/namei.c:1723 [inline]
#0: ffff88803537e690 (&type->i_mutex_dir_key#8){++++}-{3:3}, at: walk_component+0x400/0x6a0 fs/namei.c:2020
#1: ffff88803537eaf8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xce/0x100 fs/fuse/inode.c:463
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 27 Comm: khungtaskd Not tainted 5.16.0-next-20220113-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:256 [inline]
watchdog+0xcb7/0xed0 kernel/hung_task.c:413
kthread+0x2e9/0x3a0 kernel/kthread.c:377
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: 8 Comm: kworker/u4:0 Not tainted 5.16.0-next-20220113-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy13 ieee80211_iface_work
RIP: 0010:ieee80211_get_channel_khz+0x92/0x1e0 net/wireless/util.c:181
Code: ef f8 48 8d 7b 14 48 89 f8 48 c1 e8 03 0f b6 14 28 48 89 f8 83 e0 07 83 c0 03 38 d0 7c 08 84 d2 0f 85 16 01 00 00 44 8b 6b 14 <31> ff 44 89 ee e8 84 9b ef f8 45 85 ed 0f 8e b8 00 00 00 e8 56 99
RSP: 0018:ffffc90000cd7a88 EFLAGS: 00000246
RAX: 0000000000000007 RBX: ffff8880304233c8 RCX: 0000000000000000
RDX: 0000000000000000 RSI: ffffffff8888c57a RDI: ffff8880304233dc
RBP: dffffc0000000000 R08: 0000000000000000 R09: ffffffff8ffd29a7
R10: 0000000000000001 R11: 0000000000088078 R12: 000000000024cde0
R13: 000000000000000e R14: 000000000000004c R15: 000000000000004c
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000618000 CR3: 000000000b88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
ieee80211_get_channel include/net/cfg80211.h:5685 [inline]
ieee80211_rx_bss_info net/mac80211/ibss.c:1113 [inline]
ieee80211_rx_mgmt_probe_beacon net/mac80211/ibss.c:1610 [inline]
ieee80211_ibss_rx_queued_mgmt+0xe08/0x3150 net/mac80211/ibss.c:1639
ieee80211_iface_process_skb net/mac80211/iface.c:1527 [inline]
ieee80211_iface_work+0xa69/0xd00 net/mac80211/iface.c:1581
process_one_work+0x996/0x1610 kernel/workqueue.c:2289
worker_thread+0x665/0x1080 kernel/workqueue.c:2436
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: ef out %eax,(%dx)
1: f8 clc
2: 48 8d 7b 14 lea 0x14(%rbx),%rdi
6: 48 89 f8 mov %rdi,%rax
9: 48 c1 e8 03 shr $0x3,%rax
d: 0f b6 14 28 movzbl (%rax,%rbp,1),%edx
11: 48 89 f8 mov %rdi,%rax
14: 83 e0 07 and $0x7,%eax
17: 83 c0 03 add $0x3,%eax
1a: 38 d0 cmp %dl,%al
1c: 7c 08 jl 0x26
1e: 84 d2 test %dl,%dl
20: 0f 85 16 01 00 00 jne 0x13c
26: 44 8b 6b 14 mov 0x14(%rbx),%r13d
* 2a: 31 ff xor %edi,%edi <-- trapping instruction
2c: 44 89 ee mov %r13d,%esi
2f: e8 84 9b ef f8 callq 0xf8ef9bb8
34: 45 85 ed test %r13d,%r13d
37: 0f 8e b8 00 00 00 jle 0xf5
3d: e8 .byte 0xe8
3e: 56 push %rsi
3f: 99 cltd