INFO: task syz.8.426:8182 blocked for more than 143 seconds.
Not tainted 6.13.0-rc3-next-20241218-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.8.426 state:D stack:25944 pid:8182 tgid:8178 ppid:6613 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5371 [inline]
__schedule+0x189f/0x4c80 kernel/sched/core.c:6758
__schedule_loop kernel/sched/core.c:6835 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6850
bit_wait+0x12/0xd0 kernel/sched/wait_bit.c:237
__wait_on_bit+0xb0/0x2f0 kernel/sched/wait_bit.c:49
out_of_line_wait_on_bit+0x1d5/0x260 kernel/sched/wait_bit.c:64
wait_on_bit include/linux/wait_bit.h:77 [inline]
netfs_dispatch_unbuffered_reads fs/netfs/direct_read.c:107 [inline]
netfs_unbuffered_read fs/netfs/direct_read.c:146 [inline]
netfs_unbuffered_read_iter_locked+0xd83/0x1540 fs/netfs/direct_read.c:231
netfs_unbuffered_read_iter+0xbf/0xe0 fs/netfs/direct_read.c:266
__kernel_read+0x52e/0xa00 fs/read_write.c:523
prepare_binprm fs/exec.c:1698 [inline]
search_binary_handler fs/exec.c:1745 [inline]
exec_binprm fs/exec.c:1791 [inline]
bprm_execve+0xa11/0x1480 fs/exec.c:1843
do_execveat_common+0x57f/0x710 fs/exec.c:1950
do_execve fs/exec.c:2024 [inline]
__do_sys_execve fs/exec.c:2100 [inline]
__se_sys_execve fs/exec.c:2095 [inline]
__x64_sys_execve+0x92/0xb0 fs/exec.c:2095
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fe087985d29
RSP: 002b:00007fe0857f6038 EFLAGS: 00000246 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007fe087b75fa0 RCX: 00007fe087985d29
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000180
RBP: 00007fe087a01a20 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fe087b75fa0 R15: 00007ffff4da98f8
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e937d20 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6744
2 locks held by kworker/u8:3/52:
2 locks held by getty/5587:
#0: ffff88803537a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by kworker/u8:11/6771:
1 lock held by dhcpcd/7835:
#0: ffff88805ff64a08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:863 [inline]
#0: ffff88805ff64a08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: __sock_release net/socket.c:639 [inline]
#0: ffff88805ff64a08 (&sb->s_type->i_mutex_key#10){+.+.}-{4:4}, at: sock_close+0x90/0x240 net/socket.c:1419
2 locks held by syz.8.426/8182:
#0: ffff88802ffb92c8 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: prepare_bprm_creds fs/exec.c:1471 [inline]
#0: ffff88802ffb92c8 (&sig->cred_guard_mutex){+.+.}-{4:4}, at: bprm_execve+0xcf/0x1480 fs/exec.c:1823
#1: ffff88805ccd0e28 (&sb->s_type->i_mutex_key#23){++++}-{4:4}, at: netfs_start_io_direct+0x1d4/0x210 fs/netfs/locking.c:188
3 locks held by syz-executor/10347:
2 locks held by syz.5.993/11089:
2 locks held by syz.9.995/11092:
2 locks held by syz.9.995/11093:
#0: ffffffff8e7f3408 (sched_core_mutex){+.+.}-{4:4}, at: sched_core_get+0x51/0x180 kernel/sched/core.c:454
#1: ffffffff8e93d1f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#1: ffffffff8e93d1f8 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:976
1 lock held by syz.9.995/11096:
#0: ffff8880287fc7e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_read_lock_killable+0x1d/0x70 include/linux/mmap_lock.h:193
2 locks held by syz.9.995/11098:
1 lock held by syz.0.994/11094:
#0: ffff88807e39a9e0 (&mm->mmap_lock){++++}-{4:4}, at: mmap_write_lock_killable include/linux/mmap_lock.h:146 [inline]
#0: ffff88807e39a9e0 (&mm->mmap_lock){++++}-{4:4}, at: vm_mmap_pgoff+0x182/0x430 mm/util.c:578
2 locks held by syz.0.994/11095:
3 locks held by dhcpcd-run-hook/11097:
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-next-20241218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
nmi_cpu_backtrace+0x49c/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x320 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:234 [inline]
watchdog+0xff6/0x1040 kernel/hung_task.c:397
kthread+0x7a9/0x920 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 11097 Comm: dhcpcd-run-hook Not tainted 6.13.0-rc3-next-20241218-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:lock_is_held_type+0x14f/0x190 kernel/locking/lockdep.c:5926
Code: 00 75 4c 41 f7 c4 00 02 00 00 74 01 fb 65 48 8b 04 25 28 00 00 00 48 3b 44 24 08 75 42 89 d8 48 83 c4 10 5b 41 5c 41 5d 41 5e <41> 5f 5d c3 cc cc cc cc 90 0f 0b 90 48 c7 c7 e0 95 0a 8c e8 19 1a
RSP: 0018:ffffc90003d77528 EFLAGS: 00000282
RAX: 0000000000000001 RBX: ffff8880287f81e0 RCX: ffff8880353e3c00
RDX: 0000000000000000 RSI: ffffffff8c0aa7e0 RDI: ffffffff8c5fe7e0
RBP: 0000000000000000 R08: ffffffff8be9b413 R09: ffffffff8be9b17d
R10: 0000000000000003 R11: ffff8880353e3c00 R12: ffff8880287f8080
R13: 0000000000000000 R14: ffff8880287f8040 R15: ffff8880287f81e0
FS: 00007fbe17fc8380(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fbe181bc8e5 CR3: 0000000022b9c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_is_held include/linux/lockdep.h:249 [inline]
mt_locked lib/maple_tree.c:796 [inline]
mt_slot lib/maple_tree.c:803 [inline]
mas_slot lib/maple_tree.c:836 [inline]
mas_validate_limits lib/maple_tree.c:7479 [inline]
mt_validate+0x18a4/0x4b30 lib/maple_tree.c:7565
validate_mm+0xf1/0x590 mm/vma.c:582
__split_vma+0x9c3/0xb10 mm/vma.c:511
split_vma mm/vma.c:540 [inline]
vma_modify+0x244/0x330 mm/vma.c:1527
vma_modify_flags+0x3a2/0x430 mm/vma.c:1545
mprotect_fixup+0x462/0xa40 mm/mprotect.c:666
do_mprotect_pkey+0x99e/0xde0 mm/mprotect.c:840
__do_sys_mprotect mm/mprotect.c:861 [inline]
__se_sys_mprotect mm/mprotect.c:858 [inline]
__x64_sys_mprotect+0x80/0x90 mm/mprotect.c:858
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fbe182ecbb7
Code: 00 00 00 b8 0b 00 00 00 0f 05 48 3d 01 f0 ff ff 73 01 c3 48 8d 0d b9 46 01 00 f7 d8 89 01 48 83 c8 ff c3 b8 0a 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8d 0d 99 46 01 00 f7 d8 89 01 48 83
RSP: 002b:00007ffcfa24e508 EFLAGS: 00000206 ORIG_RAX: 000000000000000a
RAX: ffffffffffffffda RBX: 00007fbe182c90c0 RCX: 00007fbe182ecbb7
RDX: 0000000000000001 RSI: 0000000000003000 RDI: 00007fbe182c5000
RBP: 00007ffcfa24e620 R08: 00007ffcfa24e498 R09: 00007fbe182c90c0
R10: 00007fbe1820ab48 R11: 0000000000000206 R12: 00007fbe182c90c0
R13: 00007fbe182f4eda R14: 00007fbe182c7f28 R15: 00007fbe182c72b8