INFO: task syz.4.1536:11883 blocked for more than 143 seconds.
Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.1536 state:D stack:27696 pid:11883 tgid:11875 ppid:5821 flags:0x00000006
Call Trace:
context_switch kernel/sched/core.c:5369 [inline]
__schedule+0xe58/0x5ad0 kernel/sched/core.c:6756
__schedule_loop kernel/sched/core.c:6833 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6848
schedule_timeout+0x244/0x280 kernel/time/sleep_timeout.c:75
do_wait_for_common kernel/sched/completion.c:95 [inline]
__wait_for_common+0x3e1/0x600 kernel/sched/completion.c:116
wait_for_common kernel/sched/completion.c:127 [inline]
wait_for_completion_state+0x1c/0x40 kernel/sched/completion.c:264
coredump_wait fs/coredump.c:418 [inline]
do_coredump+0x86f/0x49e0 fs/coredump.c:575
get_signal+0x230b/0x26c0 kernel/signal.c:3002
arch_do_signal_or_restart+0x90/0x7e0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x150/0x2a0 kernel/entry/common.c:218
do_syscall_64+0xda/0x250 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f1b6aa406d0
RSP: 002b:00007f1b6b8e7378 EFLAGS: 00000246 ORIG_RAX: 000000000000002a
RAX: 0000000000000000 RBX: 00007f1b6ad46160 RCX: 00007f1b6ab7fed9
RDX: 00007f1b6b8e7380 RSI: 00007f1b6b8e74b0 RDI: 000000000000000b
RBP: 00007f1b6abf3cc8 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f1b6ad46160 R15: 00007ffff07fcf78
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e1bb500 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:337 [inline]
#0: ffffffff8e1bb500 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:849 [inline]
#0: ffffffff8e1bb500 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x7f/0x390 kernel/locking/lockdep.c:6744
3 locks held by kworker/1:2/969:
#0: ffff8880b863ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested kernel/sched/core.c:606 [inline]
#0: ffff8880b863ebd8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x7e/0x130 kernel/sched/core.c:591
#1: ffff8880b8728a88 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x2c1/0x8e0 kernel/sched/psi.c:987
#2: ffff88804532a240 (&data->fib_lock){+.+.}-{4:4}, at: nsim_fib_event_work+0x1bb/0x26d0 drivers/net/netdevsim/fib.c:1490
2 locks held by getty/5568:
#0: ffff88803710a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002fde2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
2 locks held by kworker/1:4/5867:
#0: ffff88801b078948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x1293/0x1ba0 kernel/workqueue.c:3204
#1: ffffc90002e37d80 ((work_completion)(&fw_work->work)){+.+.}-{0:0}, at: process_one_work+0x921/0x1ba0 kernel/workqueue.c:3205
1 lock held by syz.0.2052/14229:
#0: ffffffff8e1c6d00 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x700 kernel/rcu/tree.c:4565
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 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+0xf14/0x1240 kernel/hung_task.c:397
kthread+0x2c1/0x3a0 kernel/kthread.c:389
ret_from_fork+0x45/0x80 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
CPU: 0 UID: 0 PID: 14260 Comm: dhcpcd-run-hook Not tainted 6.13.0-rc1-syzkaller-00337-g7503345ac5f5 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:PageTail include/linux/page-flags.h:281 [inline]
RIP: 0010:const_folio_flags+0x33/0x1f0 include/linux/page-flags.h:309
Code: 89 f3 e8 f0 23 b0 ff 48 8d 7d 08 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 0f 85 90 01 00 00 4c 8b 65 08 <31> ff 41 83 e4 01 4c 89 e6 e8 2f 26 b0 ff 4d 85 e4 0f 85 ff 00 00
RSP: 0000:ffffc900035079a0 EFLAGS: 00000246
RAX: dffffc0000000000 RBX: 0000000000000000 RCX: ffffffff81ea97b2
RDX: 1ffffd400009b711 RSI: ffffffff81e9e250 RDI: ffffea00004db888
RBP: ffffea00004db880 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000005 R12: ffffea00004db8c8
R13: ffffea00004db880 R14: 0000000000000001 R15: ffffea00004db898
FS: 00007f1a62629500(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f1a62822440 CR3: 000000005bbde000 CR4: 00000000003526f0
Call Trace:
folio_test_head include/linux/page-flags.h:824 [inline]
folio_test_large include/linux/page-flags.h:845 [inline]
__folio_add_file_rmap mm/rmap.c:1493 [inline]
folio_add_file_rmap_ptes+0x18f/0x310 mm/rmap.c:1511
set_pte_range+0x135/0x520 mm/memory.c:5065
filemap_map_order0_folio mm/filemap.c:3624 [inline]
filemap_map_pages+0x57b/0x16b0 mm/filemap.c:3678
do_fault_around mm/memory.c:5280 [inline]
do_read_fault mm/memory.c:5313 [inline]
do_fault mm/memory.c:5456 [inline]
do_pte_missing+0xdab/0x3e70 mm/memory.c:3979
handle_pte_fault mm/memory.c:5801 [inline]
__handle_mm_fault+0x103c/0x2a40 mm/memory.c:5944
handle_mm_fault+0x3fa/0xaa0 mm/memory.c:6112
do_user_addr_fault+0x60d/0x13f0 arch/x86/mm/fault.c:1338
handle_page_fault arch/x86/mm/fault.c:1481 [inline]
exc_page_fault+0x5c/0xc0 arch/x86/mm/fault.c:1539
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x7f1a626fcbfe
Code: 00 48 8d 35 a4 58 12 00 48 0f 44 f0 83 fa 0a 74 0e 83 fa 10 74 28 89 d1 83 fa 08 75 5d eb 3d 48 89 f8 31 d2 49 ff c8 48 f7 f1 <8a> 14 16 41 88 10 48 89 fa 48 89 c7 48 83 fa 09 77 e3 eb 58 48 89
RSP: 002b:00007ffd96ddacf8 EFLAGS: 00010216
RAX: 0000000000000000 RBX: 0000000000000064 RCX: 000000000000000a
RDX: 0000000000000000 RSI: 00007f1a62822440 RDI: 0000000000000000
RBP: 00007ffd96ddb220 R08: 00007ffd96ddb1cf R09: 00007ffd96ddade8
R10: 0000000000000000 R11: 0000000000000000 R12: 00007ffd96ddb390
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000