INFO: task syz.1.381:7833 blocked for more than 143 seconds.
Not tainted 6.11.0-rc2-syzkaller-00027-g6a0e38264012 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.381 state:D stack:24672 pid:7833 tgid:7833 ppid:6092 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
io_schedule+0x8d/0x110 kernel/sched/core.c:7401
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
__filemap_get_folio+0xb7/0xc10 mm/filemap.c:1898
hugetlb_fault+0x1b10/0x3780 mm/hugetlb.c:6531
handle_mm_fault+0x173f/0x1980 mm/memory.c:5831
do_user_addr_fault arch/x86/mm/fault.c:1338 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x459/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f8d36e4b1d0
RSP: 002b:00007fffc474c1e0 EFLAGS: 00010246
RAX: 000000000000ee80 RBX: 0000000000000002 RCX: ffffffffe0000000
RDX: 8f233ab4ba9a27ae RSI: 0000000000000000 RDI: 0000555588b1a3c8
RBP: 00007fffc474c2b0 R08: 00007f8d36e00000 R09: 0000000000000003
R10: 0000000000000001 R11: 0000000000000004 R12: 0000000000000032
R13: 00007fffc474c2d0 R14: 00007fffc474c2f0 R15: fffffffffffffffe
INFO: task syz.1.381:7835 blocked for more than 145 seconds.
Not tainted 6.11.0-rc2-syzkaller-00027-g6a0e38264012 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.381 state:D stack:23568 pid:7835 tgid:7833 ppid:6092 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
__mutex_lock_common kernel/locking/mutex.c:684 [inline]
__mutex_lock+0x6a4/0xd70 kernel/locking/mutex.c:752
hugetlb_wp+0x104d/0x3a90 mm/hugetlb.c:6027
hugetlb_fault+0x26de/0x3780 mm/hugetlb.c:6579
handle_mm_fault+0x173f/0x1980 mm/memory.c:5831
do_user_addr_fault arch/x86/mm/fault.c:1389 [inline]
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x2b9/0x8c0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0010:__put_user_8+0x11/0x20 arch/x86/lib/putuser.S:107
Code: 84 00 00 00 00 00 0f 1f 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 0f 1e fa 48 89 cb 48 c1 fb 3f 48 09 d9 0f 01 cb <48> 89 01 31 c9 0f 01 ca e9 fd 86 3d 00 66 90 90 90 90 90 90 90 90
RSP: 0018:ffffc900034df778 EFLAGS: 00050202
RAX: 0000000000800000 RBX: 0000000000000000 RCX: 0000000020000020
RDX: 0000000000000000 RSI: ffffffff8c0ae6e0 RDI: ffffffff8c605f00
RBP: ffffc900034dfec8 R08: ffffffff9017c4ef R09: 1ffffffff202f89d
R10: dffffc0000000000 R11: fffffbfff202f89e R12: 1ffff9200069bf7d
R13: 1ffff9200069bf08 R14: 0000000020800000 R15: 0000000000800000
userfaultfd_copy fs/userfaultfd.c:1735 [inline]
userfaultfd_ioctl+0x28e7/0x70a0 fs/userfaultfd.c:2133
vfs_ioctl fs/ioctl.c:51 [inline]
__do_sys_ioctl fs/ioctl.c:907 [inline]
__se_sys_ioctl+0xfe/0x170 fs/ioctl.c:893
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: 0033:0x7f8d36f779f9
RSP: 002b:00007f8d37d4a038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007f8d37105f80 RCX: 00007f8d36f779f9
RDX: 0000000020000000 RSI: 00000000c028aa03 RDI: 0000000000000004
RBP: 00007f8d36fe58ee R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f8d37105f80 R15: 00007fffc474c078
Showing all locks held in the system:
1 lock held by rcu_exp_gp_kthr/19:
1 lock held by khungtaskd/30:
#0: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e9382a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6620
1 lock held by klogd/4669:
#0: ffff8880b923ea18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568
2 locks held by getty/4981:
#0: ffff88802fcc80a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f162f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
3 locks held by syz.1.381/7833:
#0: ffff88806ae54808 (&vma->vm_lock->lock){++++}-{3:3}, at: vma_start_read include/linux/mm.h:690 [inline]
#0: ffff88806ae54808 (&vma->vm_lock->lock){++++}-{3:3}, at: lock_vma_under_rcu+0x2f9/0x6e0 mm/memory.c:5999
#1: ffff88801baa8218 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_fault+0x575/0x3780 mm/hugetlb.c:6451
#2: ffff88801efc3ce8 (&resv_map->rw_sema){++++}-{3:3}, at: hugetlb_fault+0x67b/0x3780 mm/hugetlb.c:6458
2 locks held by syz.1.381/7835:
#0: ffff88807e08e098 (&mm->mmap_lock){++++}-{3:3}, at: mmap_read_trylock include/linux/mmap_lock.h:163 [inline]
#0: ffff88807e08e098 (&mm->mmap_lock){++++}-{3:3}, at: get_mmap_lock_carefully mm/memory.c:5870 [inline]
#0: ffff88807e08e098 (&mm->mmap_lock){++++}-{3:3}, at: lock_mm_and_find_vma+0x32/0x2f0 mm/memory.c:5930
#1: ffff88801baa8218 (&hugetlb_fault_mutex_table[i]){+.+.}-{3:3}, at: hugetlb_wp+0x104d/0x3a90 mm/hugetlb.c:6027
5 locks held by kworker/u8:0/8266:
1 lock held by syz-executor/8585:
#0: ffffffff8e93d678 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#0: ffffffff8e93d678 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
1 lock held by syz-executor/8588:
#0: ffff8880b923ea18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xb0/0x140 kernel/sched/core.c:568
3 locks held by syz.5.543/8981:
#0: ffffffff8fc74e90 (pernet_ops_rwsem){++++}-{3:3}, at: copy_net_ns+0x4c6/0x7b0 net/core/net_namespace.c:504
#1: ffffffff8fc81a08 (rtnl_mutex){+.+.}-{3:3}, at: setup_net+0x83d/0xca0 net/core/net_namespace.c:365
#2: ffffffff8e93d678 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:328 [inline]
#2: ffffffff8e93d678 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:958
2 locks held by syz.3.552/9008:
#0: ffff88807b7d5c08 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:799 [inline]
#0: ffff88807b7d5c08 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: __sock_release net/socket.c:658 [inline]
#0: ffff88807b7d5c08 (&sb->s_type->i_mutex_key#10){+.+.}-{3:3}, at: sock_close+0x90/0x240 net/socket.c:1421
#1: ffff888060cce258 (sk_lock-AF_CAN){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1607 [inline]
#1: ffff888060cce258 (sk_lock-AF_CAN){+.+.}-{0:0}, at: bcm_release+0x1ec/0x880 net/can/bcm.c:1569
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-rc2-syzkaller-00027-g6a0e38264012 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0 skipped: idling at native_safe_halt arch/x86/include/asm/irqflags.h:48 [inline]
NMI backtrace for cpu 0 skipped: idling at arch_safe_halt arch/x86/include/asm/irqflags.h:106 [inline]
NMI backtrace for cpu 0 skipped: idling at acpi_safe_halt+0x21/0x30 drivers/acpi/processor_idle.c:111