INFO: task syz-executor.0:7431 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:14224 pid:7431 tgid:7430 ppid:5097 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
io_schedule+0x8d/0x110 kernel/sched/core.c:9044
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1283
invalidate_inode_pages2_range+0x491/0x10e0 mm/truncate.c:648
bch2_write_invalidate_inode_pages_range+0xce/0x120 fs/bcachefs/fs-io-pagecache.c:68
bch2_direct_write+0x2d97/0x3050 fs/bcachefs/fs-io-direct.c:645
bch2_write_iter+0x206/0x2840 fs/bcachefs/fs-io-buffered.c:1143
call_write_iter include/linux/fs.h:2110 [inline]
iter_file_splice_write+0xbd7/0x14e0 fs/splice.c:743
do_splice_from fs/splice.c:941 [inline]
direct_splice_actor+0x11e/0x220 fs/splice.c:1164
splice_direct_to_actor+0x58e/0xc90 fs/splice.c:1108
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
do_sendfile+0x56d/0xdc0 fs/read_write.c:1295
__do_sys_sendfile64 fs/read_write.c:1362 [inline]
__se_sys_sendfile64+0x17c/0x1e0 fs/read_write.c:1348
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f31b4a7dd69
RSP: 002b:00007f31b58390c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f31b4babf80 RCX: 00007f31b4a7dd69
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000005
RBP: 00007f31b4aca49e R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000004d R14: 00007f31b4babf80 R15: 00007ffd27c1a288
INFO: task syz-executor.0:7493 blocked for more than 143 seconds.
Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.0 state:D stack:24656 pid:7493 tgid:7430 ppid:5097 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5409 [inline]
__schedule+0x1796/0x4a00 kernel/sched/core.c:6746
__schedule_loop kernel/sched/core.c:6823 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6838
__bch2_two_state_lock+0x171/0x200 fs/bcachefs/two_state_shared_lock.c:7
bch2_two_state_lock fs/bcachefs/two_state_shared_lock.h:56 [inline]
bch2_readahead+0xcf5/0x1870 fs/bcachefs/fs-io-buffered.c:277
read_pages+0x17e/0x840 mm/readahead.c:160
page_cache_ra_order+0xa62/0xcc0 mm/readahead.c:531
page_cache_sync_readahead include/linux/pagemap.h:1300 [inline]
filemap_get_pages+0x49d/0x2090 mm/filemap.c:2505
filemap_splice_read+0x654/0xeb0 mm/filemap.c:2870
do_splice_read fs/splice.c:985 [inline]
splice_direct_to_actor+0x4b7/0xc90 fs/splice.c:1089
do_splice_direct_actor fs/splice.c:1207 [inline]
do_splice_direct+0x28c/0x3e0 fs/splice.c:1233
vfs_copy_file_range+0xd37/0x14a0 fs/read_write.c:1558
__do_sys_copy_file_range fs/read_write.c:1612 [inline]
__se_sys_copy_file_range+0x3f2/0x5d0 fs/read_write.c:1575
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x240 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f31b4a7dd69
RSP: 002b:00007f31b58180c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000146
RAX: ffffffffffffffda RBX: 00007f31b4bac050 RCX: 00007f31b4a7dd69
RDX: 0000000000000004 RSI: 0000000000000000 RDI: 0000000000000006
RBP: 00007f31b4aca49e R08: 0000000000000006 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f31b4bac050 R15: 00007ffd27c1a288
Showing all locks held in the system:
1 lock held by khungtaskd/29:
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e334da0 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
5 locks held by kworker/u8:10/2479:
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff888015ecb148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc9000958fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc9000958fd00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f587c10 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: default_device_exit_batch+0xe9/0xa90 net/core/dev.c:11626
#4: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:291 [inline]
#4: ffffffff8e33a138 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x39a/0x820 kernel/rcu/tree_exp.h:939
2 locks held by getty/4846:
#0: ffff88802b2160a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc9000312b2f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6b5/0x1e10 drivers/tty/n_tty.c:2201
3 locks held by kworker/u8:23/5704:
#0: ffff88802ad19948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3242 [inline]
#0: ffff88802ad19948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x8e0/0x17c0 kernel/workqueue.c:3348
#1: ffffc90009e1fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3243 [inline]
#1: ffffc90009e1fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x91b/0x17c0 kernel/workqueue.c:3348
#2: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4192
1 lock held by syz-executor.0/7431:
#0: ffff88807e208420 (sb_writers#24){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163
2 locks held by syz-executor.0/7493:
#0: ffff88806ad9a7f8 (mapping.invalidate_lock#7){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:850 [inline]
#0: ffff88806ad9a7f8 (mapping.invalidate_lock#7){.+.+}-{3:3}, at: page_cache_ra_order+0x3bc/0xcc0 mm/readahead.c:510
#1: ffff888056804250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:116 [inline]
#1: ffff888056804250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:215 [inline]
#1: ffff888056804250 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x8c8/0xc90 fs/bcachefs/btree_iter.c:3069
1 lock held by syz-executor.4/10064:
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.3/10135:
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.1/10142:
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x10d0 net/core/rtnetlink.c:6592
1 lock held by syz-executor.2/10221:
1 lock held by syz-executor.2/10222:
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: do_ip_setsockopt+0x1192/0x3ae0 net/ipv4/ip_sockglue.c:1077
1 lock held by syz-executor.2/10254:
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: do_ip_setsockopt+0x1192/0x3ae0 net/ipv4/ip_sockglue.c:1077
1 lock held by syz-executor.2/10255:
#0: ffffffff8f594308 (rtnl_mutex){+.+.}-{3:3}, at: do_ip_setsockopt+0x1192/0x3ae0 net/ipv4/ip_sockglue.c:1077
3 locks held by kvm-nx-lpage-re/10252:
#0: ffffffff8e362408 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_lock include/linux/cgroup.h:368 [inline]
#0: ffffffff8e362408 (cgroup_mutex){+.+.}-{3:3}, at: cgroup_attach_task_all+0x27/0xe0 kernel/cgroup/cgroup-v1.c:61
#1: ffffffff8e1cf430 (cpu_hotplug_lock){++++}-{0:0}, at: cgroup_attach_lock+0x11/0x40 kernel/cgroup/cgroup.c:2413
#2: ffffffff8e3625f0 (cgroup_threadgroup_rwsem){++++}-{0:0}, at: cgroup_attach_task_all+0x31/0xe0 kernel/cgroup/cgroup-v1.c:62
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:114
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:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:380
kthread+0x2f0/0x390 kernel/kthread.c:388
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 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 5707 Comm: kworker/u8:26 Not tainted 6.9.0-rc7-syzkaller-00183-gcf87f46fd34d #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/02/2024
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:memcmp lib/string.c:676 [inline]
RIP: 0010:bcmp+0x169/0x1e0 lib/string.c:697
Code: 48 89 d5 e8 c9 d1 86 f6 48 8b 34 24 48 89 ea e9 2f ff ff ff 4d 85 f6 74 6c 31 ed 49 8d 3c 2c 48 89 f8 48 c1 e8 03 0f b6 04 10 <84> c0 75 2b 41 0f b6 1c 2c 49 8d 3c 2f 48 89 f8 48 c1 e8 03 0f b6
RSP: 0018:ffffc900099c7700 EFLAGS: 00000806
RAX: 0000000000000000 RBX: 0000000000000000 RCX: dffffc0000000000
RDX: dffffc0000000000 RSI: ffffc900099c7a10 RDI: ffffffff81ebceda
RBP: 0000000000000000 R08: ffff888015070627 R09: 1ffff11002a0e0c4
R10: dffffc0000000000 R11: ffffed1002a0e0c5 R12: ffffffff81ebceda
R13: dffffc0000000000 R14: 0000000000000001 R15: ffffc900099c7a10
FS: 0000000000000000(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000001b30c24000 CR3: 000000000e134000 CR4: 00000000003526f0
Call Trace:
__text_poke+0x981/0xd30 arch/x86/kernel/alternative.c:1957
text_poke arch/x86/kernel/alternative.c:1985 [inline]
text_poke_bp_batch+0x8cd/0xb30 arch/x86/kernel/alternative.c:2374
text_poke_flush arch/x86/kernel/alternative.c:2487 [inline]
text_poke_finish+0x30/0x50 arch/x86/kernel/alternative.c:2494
arch_jump_label_transform_apply+0x1c/0x30 arch/x86/kernel/jump_label.c:146
static_key_disable_cpuslocked+0xce/0x1c0 kernel/jump_label.c:235
static_key_disable+0x1a/0x20 kernel/jump_label.c:243
toggle_allocation_gate+0x1b8/0x250 mm/kfence/core.c:831
process_one_work kernel/workqueue.c:3267 [inline]
process_scheduled_works+0xa10/0x17c0 kernel/workqueue.c:3348
worker_thread+0x86d/0xd70 kernel/workqueue.c:3429
kthread+0x2f0/0x390 kernel/kthread.c:388
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244