INFO: task syz-executor.4:10847 can't die for more than 143 seconds.
task:syz-executor.4 state:D stack:26896 pid:10847 ppid: 3624 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5043 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6352
schedule+0xd2/0x1f0 kernel/sched/core.c:6424
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 kernel/sched/completion.c:106
__flush_work+0x56c/0xb10 kernel/workqueue.c:3097
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3184
p9_conn_destroy net/9p/trans_fd.c:889 [inline]
p9_fd_close+0x305/0x520 net/9p/trans_fd.c:919
p9_client_destroy+0xbe/0x370 net/9p/client.c:1089
v9fs_session_close+0x45/0x2d0 fs/9p/v9fs.c:504
v9fs_kill_super+0x49/0x90 fs/9p/vfs_super.c:226
deactivate_locked_super+0x94/0x160 fs/super.c:332
v9fs_mount+0x69f/0xa80 fs/9p/vfs_super.c:207
legacy_get_tree+0x105/0x220 fs/fs_context.c:610
vfs_get_tree+0x89/0x2f0 fs/super.c:1497
do_new_mount fs/namespace.c:3025 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3355
do_mount fs/namespace.c:3368 [inline]
__do_sys_mount fs/namespace.c:3576 [inline]
__se_sys_mount fs/namespace.c:3553 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3553
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: 0033:0x7f535b089049
RSP: 002b:00007f535c292168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f535b19c030 RCX: 00007f535b089049
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007f535b0e308d R08: 0000000020000080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc280ae6bf R14: 00007f535c292300 R15: 0000000000022000
INFO: task syz-executor.4:10847 blocked for more than 143 seconds.
Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.4 state:D stack:26896 pid:10847 ppid: 3624 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5043 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6352
schedule+0xd2/0x1f0 kernel/sched/core.c:6424
schedule_timeout+0x1db/0x2a0 kernel/time/timer.c:1857
do_wait_for_common kernel/sched/completion.c:85 [inline]
__wait_for_common+0x2af/0x360 kernel/sched/completion.c:106
__flush_work+0x56c/0xb10 kernel/workqueue.c:3097
__cancel_work_timer+0x3f9/0x570 kernel/workqueue.c:3184
p9_conn_destroy net/9p/trans_fd.c:889 [inline]
p9_fd_close+0x305/0x520 net/9p/trans_fd.c:919
p9_client_destroy+0xbe/0x370 net/9p/client.c:1089
v9fs_session_close+0x45/0x2d0 fs/9p/v9fs.c:504
v9fs_kill_super+0x49/0x90 fs/9p/vfs_super.c:226
deactivate_locked_super+0x94/0x160 fs/super.c:332
v9fs_mount+0x69f/0xa80 fs/9p/vfs_super.c:207
legacy_get_tree+0x105/0x220 fs/fs_context.c:610
vfs_get_tree+0x89/0x2f0 fs/super.c:1497
do_new_mount fs/namespace.c:3025 [inline]
path_mount+0x1320/0x1fa0 fs/namespace.c:3355
do_mount fs/namespace.c:3368 [inline]
__do_sys_mount fs/namespace.c:3576 [inline]
__se_sys_mount fs/namespace.c:3553 [inline]
__x64_sys_mount+0x27f/0x300 fs/namespace.c:3553
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: 0033:0x7f535b089049
RSP: 002b:00007f535c292168 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f535b19c030 RCX: 00007f535b089049
RDX: 0000000020000040 RSI: 0000000020000000 RDI: 0000000000000000
RBP: 00007f535b0e308d R08: 0000000020000080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc280ae6bf R14: 00007f535c292300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/28:
#0: ffffffff8bd858e0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6498
2 locks held by kworker/u4:4/990:
#0: ffff8880b9c39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c27948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x176/0x4e0 kernel/sched/psi.c:895
1 lock held by klogd/2951:
#0: ffff8880b9c39f98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
2 locks held by kworker/0:3/3258:
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic64_set arch/x86/include/asm/atomic64_64.h:34 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: arch_atomic_long_set include/linux/atomic/atomic-long.h:41 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: atomic_long_set include/linux/atomic/atomic-instrumented.h:1280 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_data kernel/workqueue.c:636 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: set_work_pool_and_clear_pending kernel/workqueue.c:663 [inline]
#0: ffff888010c64d38 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x87a/0x1610 kernel/workqueue.c:2260
#1: ffffc9000344fda8 ((work_completion)(&m->wq)){+.+.}-{0:0}, at: process_one_work+0x8ae/0x1610 kernel/workqueue.c:2264
2 locks held by getty/3279:
#0: ffff888015c12098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002e662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 5.17.0-rc6-next-20220303-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+0x1e6/0x230 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:376
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: 11 Comm: kworker/u4:1 Not tainted 5.17.0-rc6-next-20220303-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy12 ieee80211_iface_work
RIP: 0010:__kasan_record_aux_stack+0xad/0xd0 mm/kasan/generic.c:348
Code: 89 e7 48 01 c8 48 39 c3 48 0f 46 c3 48 89 c6 e8 e9 42 ff ff 4c 89 e7 48 89 c6 e8 ce e7 ff ff 48 85 c0 48 89 c3 74 17 8b 40 08 <40> 0f b6 f5 bf 00 08 00 00 89 43 0c e8 72 e4 ff ff 89 43 08 5b 5d
RSP: 0018:ffffc90000107530 EFLAGS: 00000282
RAX: 00000000b16001a0 RBX: ffff88801a48e7e0 RCX: ffff88801a48e000
RDX: 0000000000000000 RSI: ffff88801a48e7e0 RDI: ffff888010c41780
RBP: 0000000000000000 R08: ffffea0000692380 R09: 000000000000002e
R10: ffffffff81357fda R11: 000000000000003f R12: ffff888010c41780
R13: 0000000000000000 R14: ffff88807599ec00 R15: ffff88801a48e780
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c00061c704 CR3: 0000000024a39000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kvfree_call_rcu+0x74/0x990 kernel/rcu/tree.c:3630
cfg80211_update_known_bss+0x833/0xa60 net/wireless/scan.c:1668
cfg80211_bss_update+0xef/0x2070 net/wireless/scan.c:1715
cfg80211_inform_single_bss_frame_data+0x731/0xf40 net/wireless/scan.c:2471
cfg80211_inform_bss_frame_data+0xa7/0xb50 net/wireless/scan.c:2504
ieee80211_bss_info_update+0x35b/0xb00 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+0x1a74/0x33a0 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:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 89 e7 mov %esp,%edi
2: 48 01 c8 add %rcx,%rax
5: 48 39 c3 cmp %rax,%rbx
8: 48 0f 46 c3 cmovbe %rbx,%rax
c: 48 89 c6 mov %rax,%rsi
f: e8 e9 42 ff ff callq 0xffff42fd
14: 4c 89 e7 mov %r12,%rdi
17: 48 89 c6 mov %rax,%rsi
1a: e8 ce e7 ff ff callq 0xffffe7ed
1f: 48 85 c0 test %rax,%rax
22: 48 89 c3 mov %rax,%rbx
25: 74 17 je 0x3e
27: 8b 40 08 mov 0x8(%rax),%eax
* 2a: 40 0f b6 f5 movzbl %bpl,%esi <-- trapping instruction
2e: bf 00 08 00 00 mov $0x800,%edi
33: 89 43 0c mov %eax,0xc(%rbx)
36: e8 72 e4 ff ff callq 0xffffe4ad
3b: 89 43 08 mov %eax,0x8(%rbx)
3e: 5b pop %rbx
3f: 5d pop %rbp