INFO: task syz-executor.5:26617 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.5 state:D stack:28152 pid:26617 ppid: 3782 flags:0x00000000
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
rwsem_down_read_slowpath+0x589/0xa70 kernel/locking/rwsem.c:1041
__down_read_common kernel/locking/rwsem.c:1223 [inline]
__down_read kernel/locking/rwsem.c:1232 [inline]
down_read+0xe2/0x440 kernel/locking/rwsem.c:1472
mmap_read_lock include/linux/mmap_lock.h:117 [inline]
exit_mm kernel/exit.c:483 [inline]
do_exit+0xa0a/0x2b40 kernel/exit.c:819
do_group_exit+0x125/0x310 kernel/exit.c:929
__do_sys_exit_group kernel/exit.c:940 [inline]
__se_sys_exit_group kernel/exit.c:938 [inline]
__x64_sys_exit_group+0x3a/0x50 kernel/exit.c:938
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: 0033:0x7f0d92731e99
RSP: 002b:00007f0d92d78d58 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 000000000000001e RCX: 00007f0d92731e99
RDX: 00007f0d926e4adb RSI: ffffffffffffffbc RDI: 0000000000000000
RBP: 0000000000000000 R08: 00007ffd728f1080 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000001
R13: 0000000000000000 R14: 0000000000000001 R15: 00007f0d92d78e40
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8bb83da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
1 lock held by klogd/2962:
2 locks held by getty/3282:
#0: ffff888023396098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b962e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
2 locks held by syz-fuzzer/3631:
#0: ffff8880b9c39a98 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2b/0x120 kernel/sched/core.c:478
#1: ffff8880b9c279c8 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x3a6/0x490 kernel/sched/psi.c:880
2 locks held by kworker/u4:20/19333:
1 lock held by syz-executor.5/26617:
#0: ffff88802114c728 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88802114c728 (&mm->mmap_lock#2){++++}-{3:3}, at: exit_mm kernel/exit.c:483 [inline]
#0: ffff88802114c728 (&mm->mmap_lock#2){++++}-{3:3}, at: do_exit+0xa0a/0x2b40 kernel/exit.c:819
2 locks held by syz-executor.5/26619:
#0: ffff88802114c728 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#0: ffff88802114c728 (&mm->mmap_lock#2){++++}-{3:3}, at: vm_mmap_pgoff+0x15c/0x290 mm/util.c:517
#1: ffff88807a285298 (&shmem->pages_lock){+.+.}-{3:3}, at: drm_gem_shmem_get_pages+0x56/0x250 drivers/gpu/drm/drm_gem_shmem_helper.c:203
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 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+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: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: 26840 Comm: kworker/u4:3 Not tainted 5.16.0-rc6-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy9 ieee80211_iface_work
RIP: 0010:__preempt_count_add arch/x86/include/asm/preempt.h:80 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online kernel/rcu/tree.c:1168 [inline]
RIP: 0010:rcu_lockdep_current_cpu_online+0x21/0x150 kernel/rcu/tree.c:1160
Code: 0f 1f 84 00 00 00 00 00 90 65 8b 15 b9 4a 9f 7e 81 e2 00 00 f0 00 b8 01 00 00 00 75 0a 8b 15 6a 2f 2e 0c 85 d2 75 01 c3 55 53 <65> ff 05 98 4a 9f 7e e8 43 29 e2 07 48 c7 c3 00 a9 03 00 83 f8 07
RSP: 0018:ffffc9000292f7e0 EFLAGS: 00000202
RAX: 0000000000000001 RBX: 0000000000000001 RCX: 0000000000000800
RDX: 0000000000000001 RSI: 0000000000000002 RDI: ffffffff8b5648a8
RBP: ffff888010c41dc0 R08: 0000000000000b20 R09: ffff88809586e000
R10: ffffffff8892d01b R11: 000000000000001c R12: 0000000000000001
R13: 0000000000000b20 R14: 0000000000000210 R15: 0000000000000b20
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f48c7819000 CR3: 0000000023025000 CR4: 00000000003506e0
Call Trace:
rcu_read_lock_held_common kernel/rcu/update.c:112 [inline]
rcu_read_lock_held_common kernel/rcu/update.c:102 [inline]
rcu_read_lock_sched_held+0x25/0x70 kernel/rcu/update.c:123
trace_kmalloc include/trace/events/kmem.h:46 [inline]
trace_kmalloc+0x32/0xf0 include/trace/events/kmem.h:46
kmem_cache_alloc_trace+0x16b/0x2c0 mm/slub.c:3260
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:1476
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:1468 [inline]
ieee80211_iface_work+0xa65/0xd00 net/mac80211/iface.c:1522
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: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1)
7: 00
8: 90 nop
9: 65 8b 15 b9 4a 9f 7e mov %gs:0x7e9f4ab9(%rip),%edx # 0x7e9f4ac9
10: 81 e2 00 00 f0 00 and $0xf00000,%edx
16: b8 01 00 00 00 mov $0x1,%eax
1b: 75 0a jne 0x27
1d: 8b 15 6a 2f 2e 0c mov 0xc2e2f6a(%rip),%edx # 0xc2e2f8d
23: 85 d2 test %edx,%edx
25: 75 01 jne 0x28
27: c3 retq
28: 55 push %rbp
29: 53 push %rbx
* 2a: 65 ff 05 98 4a 9f 7e incl %gs:0x7e9f4a98(%rip) # 0x7e9f4ac9 <-- trapping instruction
31: e8 43 29 e2 07 callq 0x7e22979
36: 48 c7 c3 00 a9 03 00 mov $0x3a900,%rbx
3d: 83 f8 07 cmp $0x7,%eax