INFO: task syz-executor252:5249 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor252 state:D stack:28352 pid:5249 tgid:5249 ppid:5246 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1580
filemap_invalidate_lock include/linux/fs.h:860 [inline]
blkdev_fallocate+0x1da/0x390 block/fops.c:808
vfs_fallocate+0x459/0xf90 fs/open.c:333
ksys_fallocate fs/open.c:356 [inline]
__do_sys_fallocate fs/open.c:364 [inline]
__se_sys_fallocate fs/open.c:362 [inline]
__x64_sys_fallocate+0xd5/0x140 fs/open.c:362
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc152b0b29
RSP: 002b:00007ffcaadf6a88 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcc152b0b29
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000002000000400 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcaadf6ca8 R14: 00007ffcaadf6ab0 R15: 00007ffcaadf6aa0
INFO: task syz-executor252:5250 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor252 state:D stack:27872 pid:5250 tgid:5250 ppid:5248 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0xe37/0x5490 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0xe7/0x350 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0x539/0x12a0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d8/0x200 kernel/locking/rwsem.c:1580
filemap_invalidate_lock include/linux/fs.h:860 [inline]
blkdev_fallocate+0x1da/0x390 block/fops.c:808
vfs_fallocate+0x459/0xf90 fs/open.c:333
ksys_fallocate fs/open.c:356 [inline]
__do_sys_fallocate fs/open.c:364 [inline]
__se_sys_fallocate fs/open.c:362 [inline]
__x64_sys_fallocate+0xd5/0x140 fs/open.c:362
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xcd/0x250 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fcc152b0b29
RSP: 002b:00007ffcaadf6a88 EFLAGS: 00000246 ORIG_RAX: 000000000000011d
RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007fcc152b0b29
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000000000004
RBP: 00000000000f4240 R08: 00000000000000a0 R09: 00000000000000a0
R10: 0000002000000400 R11: 0000000000000246 R12: 0000000000000001
R13: 00007ffcaadf6ca8 R14: 00007ffcaadf6ab0 R15: 00007ffcaadf6aa0
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8ddba6a0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8ddba6a0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8ddba6a0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x75/0x340 kernel/locking/lockdep.c:6626
7 locks held by kworker/u8:3/52:
2 locks held by klogd/4662:
2 locks held by getty/4975:
#0: ffff88803010c0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90002f062f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0xfba/0x1480 drivers/tty/n_tty.c:2211
1 lock held by syz-executor252/5247:
1 lock held by syz-executor252/5249:
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1da/0x390 block/fops.c:808
1 lock held by syz-executor252/5250:
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1da/0x390 block/fops.c:808
1 lock held by syz-executor252/5257:
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1da/0x390 block/fops.c:808
1 lock held by syz-executor252/5265:
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: filemap_invalidate_lock include/linux/fs.h:860 [inline]
#0: ffff88802315b748 (mapping.invalidate_lock#2){++++}-{3:3}, at: blkdev_fallocate+0x1da/0x390 block/fops.c:808
=============================================
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Call Trace:
__dump_stack lib/dump_stack.c:93 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:119
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:223 [inline]
watchdog+0xf0c/0x1240 kernel/hung_task.c:379
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 24 Comm: ksoftirqd/1 Not tainted 6.11.0-syzkaller-02574-ga430d95c5efa #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:stack_access_ok+0x1f9/0x270 arch/x86/kernel/unwind_orc.c:394
Code: fd 0f 83 d3 fe ff ff e8 85 da 4e 00 48 8b 44 24 08 48 01 e8 49 39 c6 48 89 04 24 0f 83 b9 fe ff ff e8 6b da 4e 00 48 8b 04 24 <41> be 01 00 00 00 49 39 c7 0f 83 ec fe ff ff e9 9c fe ff ff 48 89
RSP: 0018:ffffc900001e78e8 EFLAGS: 00000246
RAX: ffffc900001e7ef0 RBX: ffffc900001e79b0 RCX: ffffffff813cfd16
RDX: ffff88801dab0000 RSI: ffffffff813cfe75 RDI: 0000000000000005
RBP: ffffc900001e7ee8 R08: 0000000000000005 R09: 0000000000000000
R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900001e79b8
R13: ffffc900001e79c0 R14: ffffc900001e0000 R15: ffffc900001e8000
FS: 0000000000000000(0000) GS:ffff8880b8900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005555619ef6f8 CR3: 0000000032b3a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
deref_stack_reg arch/x86/kernel/unwind_orc.c:403 [inline]
unwind_next_frame+0xd9b/0x23a0 arch/x86/kernel/unwind_orc.c:585
arch_stack_walk+0x100/0x170 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x95/0xd0 kernel/stacktrace.c:122
save_stack+0x162/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x8d/0x400 mm/page_owner.c:297
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1101 [inline]
free_unref_page+0x64a/0xe40 mm/page_alloc.c:2619
rcu_do_batch kernel/rcu/tree.c:2569 [inline]
rcu_core+0x828/0x16b0 kernel/rcu/tree.c:2843
handle_softirqs+0x216/0x8f0 kernel/softirq.c:554
run_ksoftirqd kernel/softirq.c:928 [inline]
run_ksoftirqd+0x3a/0x60 kernel/softirq.c:920
smpboot_thread_fn+0x661/0xa10 kernel/smpboot.c:164
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
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.043 msecs