INFO: task syz-executor.1:5378 blocked for more than 143 seconds.
Not tainted 5.16.0-rc6-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:26992 pid: 5378 ppid: 3634 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:4972 [inline]
__schedule+0xb72/0x1460 kernel/sched/core.c:6253
schedule+0x12b/0x1f0 kernel/sched/core.c:6326
rwsem_down_read_slowpath+0x5e2/0xb00 kernel/locking/rwsem.c:1041
__down_read_common+0xaa/0x450 kernel/locking/rwsem.c:1223
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm+0xd4/0x2f0 kernel/exit.c:483
do_exit+0x688/0x24f0 kernel/exit.c:819
do_group_exit+0x168/0x2d0 kernel/exit.c:929
get_signal+0x1740/0x2120 kernel/signal.c:2852
arch_do_signal_or_restart+0x9c/0x730 arch/x86/kernel/signal.c:868
handle_signal_work kernel/entry/common.c:148 [inline]
exit_to_user_mode_loop kernel/entry/common.c:172 [inline]
exit_to_user_mode_prepare+0x191/0x220 kernel/entry/common.c:207
__syscall_exit_to_user_mode_work kernel/entry/common.c:289 [inline]
syscall_exit_to_user_mode+0x2e/0x70 kernel/entry/common.c:300
do_syscall_64+0x53/0xd0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x44/0xae
RIP: 0033:0x7fc2f2814e99
RSP: 002b:00007fc2f118a168 EFLAGS: 00000246 ORIG_RAX: 000000000000012b
RAX: fffffffffffffe00 RBX: 00007fc2f2927f60 RCX: 00007fc2f2814e99
RDX: 0000000000000002 RSI: 0000000020001400 RDI: 0000000000000003
RBP: 00007fc2f286eff1 R08: 0000000020001480 R09: 0000000000000000
R10: 0000000000012000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffdeddbbf6f R14: 00007fc2f118a300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8cb1de00 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3290:
#0: ffff88814af36098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6c5/0x1c60 drivers/tty/n_tty.c:2113
1 lock held by syz-executor.1/5377:
#0: ffff88801a12ce28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#0: ffff88801a12ce28 (&mm->mmap_lock#2){++++}-{3:3}, at: do_mprotect_pkey+0x1f5/0xa20 mm/mprotect.c:551
1 lock held by syz-executor.1/5378:
#0: ffff88801a12ce28 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88801a12ce28 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm+0xd4/0x2f0 kernel/exit.c:483
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc6-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+0x1dc/0x2d8 lib/dump_stack.c:106
nmi_cpu_backtrace+0x45f/0x490 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x16a/0x280 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+0xc82/0xcd0 kernel/hung_task.c:295
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 44 Comm: kworker/u4:2 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy4 ieee80211_iface_work
RIP: 0010:_raw_spin_unlock_irqrestore+0xd/0x130 kernel/locking/spinlock.c:193
Code: f7 65 8b 05 2d 6b ec 75 85 c0 74 02 5b c3 e8 b2 52 ea f6 5b c3 0f 1f 84 00 00 00 00 00 55 48 89 e5 41 57 41 56 41 55 41 54 53 <48> 83 e4 e0 48 83 ec 60 49 89 f7 48 89 fb 65 48 8b 04 25 28 00 00
RSP: 0018:ffffc9000114fa78 EFLAGS: 00000046
RAX: 0000000000000000 RBX: ffff888091186868 RCX: 0000000000000001
RDX: dffffc0000000000 RSI: 0000000000000246 RDI: ffffffff90ed9bc0
RBP: ffffc9000114faa0 R08: dffffc0000000000 R09: 0000000000000003
R10: fffff52000229f31 R11: 0000000000000004 R12: 0000000000000000
R13: 0000000000000004 R14: ffff888091186000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffc915e7090 CR3: 000000000c88e000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
__debug_check_no_obj_freed lib/debugobjects.c:1002 [inline]
debug_check_no_obj_freed+0x5a2/0x650 lib/debugobjects.c:1023
slab_free_hook mm/slub.c:1698 [inline]
slab_free_freelist_hook+0xcf/0x1a0 mm/slub.c:1749
slab_free mm/slub.c:3513 [inline]
kmem_cache_free+0xa4/0x180 mm/slub.c:3530
ieee80211_iface_work+0x788/0xc90 net/mac80211/iface.c:1524
process_one_work+0x853/0x1140 kernel/workqueue.c:2298
worker_thread+0xac1/0x1320 kernel/workqueue.c:2445
kthread+0x468/0x490 kernel/kthread.c:327
ret_from_fork+0x1f/0x30
----------------
Code disassembly (best guess):
0: f7 65 8b mull -0x75(%rbp)
3: 05 2d 6b ec 75 add $0x75ec6b2d,%eax
8: 85 c0 test %eax,%eax
a: 74 02 je 0xe
c: 5b pop %rbx
d: c3 retq
e: e8 b2 52 ea f6 callq 0xf6ea52c5
13: 5b pop %rbx
14: c3 retq
15: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
1c: 00
1d: 55 push %rbp
1e: 48 89 e5 mov %rsp,%rbp
21: 41 57 push %r15
23: 41 56 push %r14
25: 41 55 push %r13
27: 41 54 push %r12
29: 53 push %rbx
* 2a: 48 83 e4 e0 and $0xffffffffffffffe0,%rsp <-- trapping instruction
2e: 48 83 ec 60 sub $0x60,%rsp
32: 49 89 f7 mov %rsi,%r15
35: 48 89 fb mov %rdi,%rbx
38: 65 gs
39: 48 rex.W
3a: 8b .byte 0x8b
3b: 04 25 add $0x25,%al
3d: 28 00 sub %al,(%rax)