INFO: task syz.2.1273:12913 blocked for more than 143 seconds.
Not tainted syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.2.1273 state:D stack:27016 pid:12913 ppid:9901 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5381 [inline]
__schedule+0x1553/0x45a0 kernel/sched/core.c:6700
schedule+0xbd/0x170 kernel/sched/core.c:6774
request_wait_answer fs/fuse/dev.c:407 [inline]
__fuse_request_send fs/fuse/dev.c:426 [inline]
fuse_simple_request+0x1204/0x1c70 fs/fuse/dev.c:513
fuse_flush+0x667/0x8b0 fs/fuse/file.c:549
filp_flush fs/open.c:1533 [inline]
filp_close+0xb1/0x150 fs/open.c:1546
__range_close fs/file.c:698 [inline]
__close_range+0x368/0x660 fs/file.c:755
__do_sys_close_range fs/open.c:1599 [inline]
__se_sys_close_range fs/open.c:1596 [inline]
__x64_sys_close_range+0x7a/0x90 fs/open.c:1596
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7f4ab579ce59
RSP: 002b:00007ffe6cdcc2f8 EFLAGS: 00000246 ORIG_RAX: 00000000000001b4
RAX: ffffffffffffffda RBX: 00007f4ab5a17da0 RCX: 00007f4ab579ce59
RDX: 0000000000000000 RSI: 000000000000001e RDI: 0000000000000003
RBP: 00007f4ab5a17da0 R08: 0000000000000006 R09: 0000000000000000
R10: 00000000003ffb68 R11: 0000000000000246 R12: 000000000009fceb
R13: 00007f4ab5a15fac R14: 000000000009fa87 R15: 00007ffe6cdcc400
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:334 [inline]
#0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:786 [inline]
#0: ffffffff8d132120 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x290 kernel/locking/lockdep.c:6633
3 locks held by kworker/u4:11/3010:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa9/0x140 kernel/sched/core.c:567
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: psi_sched_switch kernel/sched/stats.h:189 [inline]
#1: ffff8880b8e289c0 (psi_seq){-.-.}-{0:0}, at: __schedule+0x2176/0x45a0 kernel/sched/core.c:6695
#2: ffff8880b8e29598 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x123/0x270 kernel/time/timer.c:999
2 locks held by getty/5532:
#0: ffff88802d1180a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000326e2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x433/0x1390 drivers/tty/n_tty.c:2217
1 lock held by dhcpcd-run-hook/15484:
#0: ffff8880b8e3c018 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0xa9/0x140 kernel/sched/core.c:567
1 lock held by modprobe/15483:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
Call Trace:
dump_stack_lvl+0x18c/0x250 lib/dump_stack.c:106
nmi_cpu_backtrace+0x3a6/0x3e0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x2f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xf3d/0xf80 kernel/hung_task.c:379
kthread+0x2fa/0x390 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:152
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:293
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 15485 Comm: dhcpcd-run-hook Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026
RIP: 0010:__sanitizer_cov_trace_switch+0x81/0x120 kernel/kcov.c:349
Code: 00 00 00 b9 01 00 00 00 48 85 c0 0f 84 ae 00 00 00 41 57 41 56 41 54 53 48 8b 54 24 20 65 4c 8b 05 94 84 7c 7e 45 31 c9 eb 08 <49> ff c1 4c 39 c8 74 77 4e 8b 54 ce 10 65 44 8b 1d 82 84 7c 7e 41
RSP: 0018:ffffc9001358f258 EFLAGS: 00000293
RAX: 0000000000000003 RBX: ffff888074fc3020 RCX: 0000000000000005
RDX: ffffffff8a758d17 RSI: ffffffff8e7337d0 RDI: 0000000000000001
RBP: ffffc9001358f430 R08: ffff88802525da00 R09: 0000000000000001
R10: 0000000000000001 R11: 0000000000000000 R12: ffff888074fc3000
R13: 000055d38e5d6fff R14: 0000000000000001 R15: 000055d38e5d4000
FS: 0000000000000000(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000055d38e5d8008 CR3: 00000000761e6000 CR4: 00000000003506e0
Call Trace:
ma_slots lib/maple_tree.c:787 [inline]
mas_get_slot lib/maple_tree.c:6690 [inline]
mas_validate_gaps lib/maple_tree.c:6959 [inline]
mt_validate+0x2457/0x4400 lib/maple_tree.c:7234
validate_mm+0xc6/0x450 mm/mmap.c:288
mmap_region+0xe8d/0x2000 mm/mmap.c:2947
do_mmap+0x92c/0x10a0 mm/mmap.c:1385
vm_mmap_pgoff+0x1c4/0x3f0 mm/util.c:556
elf_map+0xfd/0x2f0 fs/binfmt_elf.c:376
load_elf_interp+0x49c/0xd10 fs/binfmt_elf.c:663
load_elf_binary+0x1a6b/0x2860 fs/binfmt_elf.c:1271
search_binary_handler fs/exec.c:1775 [inline]
exec_binprm fs/exec.c:1817 [inline]
bprm_execve+0xb08/0x1700 fs/exec.c:1892
do_execveat_common+0x51b/0x6c0 fs/exec.c:1998
do_execve fs/exec.c:2072 [inline]
__do_sys_execve fs/exec.c:2148 [inline]
__se_sys_execve fs/exec.c:2143 [inline]
__x64_sys_execve+0x92/0xa0 fs/exec.c:2143
do_syscall_x64 arch/x86/entry/common.c:46 [inline]
do_syscall_64+0x55/0xb0 arch/x86/entry/common.c:76
entry_SYSCALL_64_after_hwframe+0x68/0xd2
RIP: 0033:0x7efd6feae107
Code: Unable to access opcode bytes at 0x7efd6feae0dd.
RSP: 002b:00007efd6fd17e68 EFLAGS: 00000202 ORIG_RAX: 000000000000003b
RAX: ffffffffffffffda RBX: 00007ffdb864c090 RCX: 00007efd6feae107
RDX: 000055eb152546e0 RSI: 00007ffdb864c280 RDI: 000055eaf12e66bd
RBP: 00007efd6fd17ff0 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000008 R11: 0000000000000202 R12: 0000000000000001
R13: 00007ffdb864bd70 R14: 00007efd6fd17f20 R15: 0000000000000040