INFO: task syz-executor.1:11250 blocked for more than 143 seconds.
Not tainted 5.16.0-rc4-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.1 state:D stack:28920 pid:11250 ppid: 14106 flags:0x00000004
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]
do_user_addr_fault+0x9d6/0x11c0 arch/x86/mm/fault.c:1348
handle_page_fault arch/x86/mm/fault.c:1485 [inline]
exc_page_fault+0x9e/0x180 arch/x86/mm/fault.c:1541
asm_exc_page_fault+0x1e/0x30 arch/x86/include/asm/idtentry.h:568
RIP: 0033:0x7f44056092e2
RSP: 002b:00007ffd8afc0498 EFLAGS: 00010213
RAX: 000000000000000b RBX: 00007f4403f5c700 RCX: ffffffffffffffbc
RDX: 00007f4403f5c9d0 RSI: 00007f4403f5c2f0 RDI: 00000000003d0f00
RBP: 00007ffd8afc06e0 R08: 00007f4403f5c700 R09: 00007f4403f5c700
R10: 00007f4403f5c9d0 R11: 0000000000000206 R12: 00007ffd8afc054e
R13: 00007ffd8afc054f R14: 00007f4403f5c300 R15: 0000555555d4c940
Showing all locks held in the system:
1 lock held by khungtaskd/26:
#0: ffffffff8bb811a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x53/0x260 kernel/locking/lockdep.c:6458
2 locks held by getty/3294:
#0: ffff88814ae76098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x22/0x80 drivers/tty/tty_ldisc.c:252
#1: ffffc90002b8e2e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xcf0/0x1230 drivers/tty/n_tty.c:2113
4 locks held by kworker/0:6/3677:
#0: ffff8880b9c39b18 (&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: ffff888140082958 (&s->s_inode_list_lock){+.+.}-{2:2}, at: spin_lock include/linux/spinlock.h:349 [inline]
#2: ffff888140082958 (&s->s_inode_list_lock){+.+.}-{2:2}, at: nr_blockdev_pages+0x22/0x110 block/bdev.c:520
#3: ffffffff907632e0 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_active_state lib/debugobjects.c:927 [inline]
#3: ffffffff907632e0 (&obj_hash[i].lock){-.-.}-{2:2}, at: debug_object_active_state+0x10b/0x350 lib/debugobjects.c:914
3 locks held by kworker/u4:16/12373:
2 locks held by syz-executor.1/14106:
#0: ffff88806d5d2ac0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: inode_lock_shared include/linux/fs.h:793 [inline]
#0: ffff88806d5d2ac0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: lookup_slow fs/namei.c:1673 [inline]
#0: ffff88806d5d2ac0 (&sb->s_type->i_mutex_key#22){++++}-{3:3}, at: walk_component+0x400/0x6a0 fs/namei.c:1970
#1: ffff888035fe41d0 (&sbi->s_lock){+.+.}-{3:3}, at: vfat_lookup+0xeb/0x610 fs/fat/namei_vfat.c:710
1 lock held by syz-executor.1/11250:
#0: ffff88801caa98e8 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_read_lock include/linux/mmap_lock.h:117 [inline]
#0: ffff88801caa98e8 (&mm->mmap_lock#2){++++}-{3:3}, at: do_user_addr_fault+0x9d6/0x11c0 arch/x86/mm/fault.c:1348
3 locks held by syz-executor.1/11251:
#0: ffffffff8bc53430 (dup_mmap_sem){++++}-{0:0}, at: dup_mmap kernel/fork.c:497 [inline]
#0: ffffffff8bc53430 (dup_mmap_sem){++++}-{0:0}, at: dup_mm+0x108/0x13e0 kernel/fork.c:1450
#1: ffff88801caa98e8 (&mm->mmap_lock#2){++++}-{3:3}, at: mmap_write_lock_killable include/linux/mmap_lock.h:87 [inline]
#1: ffff88801caa98e8 (&mm->mmap_lock#2){++++}-{3:3}, at: dup_mmap kernel/fork.c:498 [inline]
#1: ffff88801caa98e8 (&mm->mmap_lock#2){++++}-{3:3}, at: dup_mm+0x12e/0x13e0 kernel/fork.c:1450
#2: ffff8880712321e8 (&mm->mmap_lock/1){+.+.}-{3:3}, at: mmap_write_lock_nested include/linux/mmap_lock.h:78 [inline]
#2: ffff8880712321e8 (&mm->mmap_lock/1){+.+.}-{3:3}, at: dup_mmap kernel/fork.c:507 [inline]
#2: ffff8880712321e8 (&mm->mmap_lock/1){+.+.}-{3:3}, at: dup_mm+0x18a/0x13e0 kernel/fork.c:1450
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 26 Comm: khungtaskd Not tainted 5.16.0-rc4-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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 12539 Comm: kworker/u4:22 Not tainted 5.16.0-rc4-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011
Workqueue: phy3 ieee80211_iface_work
RIP: 0010:__local_bh_enable_ip+0x1/0x120 kernel/softirq.c:361
Code: ff ff ff 48 8b 85 30 ff ff ff e9 c9 fc ff ff 48 89 df e8 c2 2a 77 00 e9 7e fe ff ff 66 66 2e 0f 1f 84 00 00 00 00 00 66 90 55 <48> 89 fd 53 89 f3 65 8b 05 72 7b bc 7e a9 00 00 0f 00 0f 85 b6 00
RSP: 0018:ffffc90003d07b50 EFLAGS: 00000246
RAX: 0000000000000001 RBX: 0000000000000006 RCX: ffffffff815c69f0
RDX: dffffc0000000000 RSI: 0000000000000201 RDI: ffffffff88948e63
RBP: ffff888026469bb0 R08: 0000000000000000 R09: ffff888026469bb3
R10: ffffed1004c8d376 R11: 0000000000000000 R12: dffffc0000000000
R13: ffff888026469868 R14: ffff888026468c80 R15: ffff888026469810
FS: 0000000000000000(0000) GS:ffff8880b9c00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055966c532680 CR3: 000000001f32d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
spin_unlock_bh include/linux/spinlock.h:394 [inline]
ieee80211_ibss_work+0x353/0xe80 net/mac80211/ibss.c:1702
ieee80211_iface_work+0xb70/0xd00 net/mac80211/iface.c:1544
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), 3 bytes skipped:
0: 48 8b 85 30 ff ff ff mov -0xd0(%rbp),%rax
7: e9 c9 fc ff ff jmpq 0xfffffcd5
c: 48 89 df mov %rbx,%rdi
f: e8 c2 2a 77 00 callq 0x772ad6
14: e9 7e fe ff ff jmpq 0xfffffe97
19: 66 66 2e 0f 1f 84 00 data16 nopw %cs:0x0(%rax,%rax,1)
20: 00 00 00 00
24: 66 90 xchg %ax,%ax
26: 55 push %rbp
* 27: 48 89 fd mov %rdi,%rbp <-- trapping instruction
2a: 53 push %rbx
2b: 89 f3 mov %esi,%ebx
2d: 65 8b 05 72 7b bc 7e mov %gs:0x7ebc7b72(%rip),%eax # 0x7ebc7ba6
34: a9 00 00 0f 00 test $0xf0000,%eax
39: 0f .byte 0xf
3a: 85 .byte 0x85
3b: b6 00 mov $0x0,%dh