INFO: task syz-executor.2:7618 blocked for more than 143 seconds.
Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28456 pid: 7618 ppid: 3630 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x260 kernel/sched/core.c:6377
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4b9/0x1250 fs/open.c:824
do_open fs/namei.c:3476 [inline]
path_openat+0x1c9e/0x2940 fs/namei.c:3609
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: 0033:0x7f160432bf64
RSP: 002b:00007f1602cedca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f160448bf60 RCX: 00007f160432bf64
RDX: 0000000000000002 RSI: 00007f1602cedd40 RDI: 00000000ffffff9c
RBP: 00007f1602cedd40 R08: 0000000000000000 R09: 000000000000000d
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007f16049bfb1f R14: 00007f1602cee300 R15: 0000000000022000
INFO: task syz-executor.1:7678 blocked for more than 143 seconds.
Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28456 pid: 7678 ppid: 3628 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:4995 [inline]
__schedule+0xa94/0x4910 kernel/sched/core.c:6304
schedule+0xd2/0x260 kernel/sched/core.c:6377
schedule_preempt_disabled+0xf/0x20 kernel/sched/core.c:6436
__mutex_lock_common kernel/locking/mutex.c:673 [inline]
__mutex_lock+0xa32/0x12f0 kernel/locking/mutex.c:733
tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133
chrdev_open+0x266/0x770 fs/char_dev.c:414
do_dentry_open+0x4b9/0x1250 fs/open.c:824
do_open fs/namei.c:3476 [inline]
path_openat+0x1c9e/0x2940 fs/namei.c:3609
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: 0033:0x7f92ad339f64
RSP: 002b:00007f92abcfbca0 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f92ad499f60 RCX: 00007f92ad339f64
RDX: 0000000000000002 RSI: 00007f92abcfbd40 RDI: 00000000ffffff9c
RBP: 00007f92abcfbd40 R08: 0000000000000000 R09: 000000000000000d
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000002
R13: 00007f92ad9cdb1f R14: 00007f92abcfc300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb84ca0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6460
2 locks held by getty/3277:
#0: ffff88814ac25098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:244
#1: ffffc90002b662e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2075
3 locks held by syz-executor.4/7598:
1 lock held by syz-executor.2/7618:
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133
1 lock held by syz-executor.1/7678:
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133
1 lock held by syz-executor.0/7896:
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133
1 lock held by syz-executor.5/8471:
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open_by_driver drivers/tty/tty_io.c:2050 [inline]
#0: ffffffff8c5b2668 (tty_mutex){+.+.}-{3:3}, at: tty_open+0x55e/0x1000 drivers/tty/tty_io.c:2133
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 26 Comm: khungtaskd Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #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:212 [inline]
watchdog+0xc1d/0xf50 kernel/hung_task.c:369
kthread+0x2e9/0x3a0 kernel/kthread.c:377
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: 90 Comm: kworker/u4:3 Not tainted 5.17.0-rc8-syzkaller-00003-g56e337f2cf13 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy6 ieee80211_iface_work
RIP: 0010:__debug_check_no_obj_freed lib/debugobjects.c:981 [inline]
RIP: 0010:debug_check_no_obj_freed+0xe2/0x420 lib/debugobjects.c:1023
Code: 48 89 44 24 30 48 8b 7c 24 10 e8 49 ad 6b 05 48 89 44 24 28 48 8b 44 24 30 80 38 00 0f 85 33 03 00 00 48 8b 44 24 20 4c 8b 00 <4d> 85 c0 0f 84 59 02 00 00 49 bd 22 01 00 00 00 00 ad de 4c 89 c0
RSP: 0018:ffffc90001a9fae0 EFLAGS: 00000046
RAX: ffffffff90740378 RBX: ffff88805fabb800 RCX: ffffffff815e06b0
RDX: 1ffffffff20e8072 RSI: 0000000000000004 RDI: ffffc90001a9fa50
RBP: ffff888010c41c80 R08: 0000000000000000 R09: 0000000000000003
R10: fffff52000353f4a R11: 0000000000000001 R12: 1ffffffff20e806f
R13: ffff88805fabb800 R14: dead000000000100 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff8880b9d00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000000c000b21000 CR3: 000000000b88e000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
slab_free_hook mm/slub.c:1703 [inline]
slab_free_freelist_hook+0xeb/0x1c0 mm/slub.c:1754
slab_free mm/slub.c:3509 [inline]
kfree+0xd0/0x390 mm/slub.c:4562
skb_free_head net/core/skbuff.c:655 [inline]
skb_release_data+0x630/0x760 net/core/skbuff.c:677
skb_release_all net/core/skbuff.c:742 [inline]
__kfree_skb net/core/skbuff.c:756 [inline]
kfree_skb_reason.part.0+0xc3/0x2f0 net/core/skbuff.c:776
kfree_skb_reason+0x85/0x110 include/linux/refcount.h:279
kfree_skb include/linux/skbuff.h:1114 [inline]
ieee80211_iface_work+0x413/0xd00 net/mac80211/iface.c:1583
process_one_work+0x9ac/0x1650 kernel/workqueue.c:2307
worker_thread+0x657/0x1110 kernel/workqueue.c:2454
kthread+0x2e9/0x3a0 kernel/kthread.c:377
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:295
----------------
Code disassembly (best guess):
0: 48 89 44 24 30 mov %rax,0x30(%rsp)
5: 48 8b 7c 24 10 mov 0x10(%rsp),%rdi
a: e8 49 ad 6b 05 callq 0x56bad58
f: 48 89 44 24 28 mov %rax,0x28(%rsp)
14: 48 8b 44 24 30 mov 0x30(%rsp),%rax
19: 80 38 00 cmpb $0x0,(%rax)
1c: 0f 85 33 03 00 00 jne 0x355
22: 48 8b 44 24 20 mov 0x20(%rsp),%rax
27: 4c 8b 00 mov (%rax),%r8
* 2a: 4d 85 c0 test %r8,%r8 <-- trapping instruction
2d: 0f 84 59 02 00 00 je 0x28c
33: 49 bd 22 01 00 00 00 movabs $0xdead000000000122,%r13
3a: 00 ad de
3d: 4c 89 c0 mov %r8,%rax