INFO: task syz.4.112:6235 blocked for more than 143 seconds.
Not tainted 6.10.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.112 state:D stack:14520 pid:6235 tgid:6234 ppid:5098 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
io_schedule+0x8d/0x110 kernel/sched/core.c:9043
folio_wait_bit_common+0x882/0x12b0 mm/filemap.c:1307
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+0x2d95/0x3050 fs/bcachefs/fs-io-direct.c:647
bch2_write_iter+0x206/0x2840 fs/bcachefs/fs-io-buffered.c:1135
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/0xe20 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+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3992175bd9
RSP: 002b:00007f3992ed5048 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3992303f60 RCX: 00007f3992175bd9
RDX: 0000000000000000 RSI: 0000000000000005 RDI: 0000000000000005
RBP: 00007f39921e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000800000009 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000000b R14: 00007f3992303f60 R15: 00007ffca5e2eee8
INFO: task syz.4.112:6253 blocked for more than 144 seconds.
Not tainted 6.10.0-rc7-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.4.112 state:D stack:24016 pid:6253 tgid:6234 ppid:5098 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5408 [inline]
__schedule+0x1796/0x49d0 kernel/sched/core.c:6745
__schedule_loop kernel/sched/core.c:6822 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6837
__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+0xcad/0x1860 fs/bcachefs/fs-io-buffered.c:269
read_pages+0x17e/0x840 mm/readahead.c:160
page_cache_ra_order+0xa9f/0xd00 mm/readahead.c:535
page_cache_sync_readahead include/linux/pagemap.h:1306 [inline]
filemap_get_pages+0x49d/0x2090 mm/filemap.c:2529
filemap_splice_read+0x654/0xeb0 mm/filemap.c:2894
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
do_sendfile+0x56d/0xe20 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+0xf3/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f3992175bd9
RSP: 002b:00007f3992eb4048 EFLAGS: 00000246 ORIG_RAX: 0000000000000028
RAX: ffffffffffffffda RBX: 00007f3992304038 RCX: 00007f3992175bd9
RDX: 0000000000000000 RSI: 0000000000000007 RDI: 0000000000000006
RBP: 00007f39921e4e60 R08: 0000000000000000 R09: 0000000000000000
R10: 0001000000201005 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f3992304038 R15: 00007ffca5e2eee8
Showing all locks held in the system:
1 lock held by pool_workqueue_/3:
3 locks held by kworker/0:0/8:
1 lock held by khungtaskd/30:
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:329 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:781 [inline]
#0: ffffffff8e333f20 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6614
4 locks held by kworker/u8:3/51:
#0: ffff888015ed3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015ed3148 ((wq_completion)netns){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90000bb7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90000bb7d00 (net_cleanup_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5c80d0 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0x16a/0xcc0 net/core/net_namespace.c:594
#3: ffffffff8f5d4908 (rtnl_mutex){+.+.}-{3:3}, at: mpls_net_exit+0x7d/0x2a0 net/mpls/af_mpls.c:2708
2 locks held by kworker/0:2/57:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc90001377d00 (free_ipc_work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc90001377d00 (free_ipc_work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
3 locks held by kworker/u8:7/2443:
#0: ffff888029ff9148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888029ff9148 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc9000908fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc9000908fd00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5d4908 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4193
1 lock held by dhcpcd/4752:
#0: ffffffff8f5d4908 (rtnl_mutex){+.+.}-{3:3}, at: devinet_ioctl+0x2ce/0x1bc0 net/ipv4/devinet.c:1101
2 locks held by getty/4839:
#0: ffff88802a61f0a0 (&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:2211
3 locks held by kworker/1:4/5131:
3 locks held by kworker/1:6/5134:
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3223 [inline]
#0: ffff888015080948 ((wq_completion)events){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3329
#1: ffffc9000412fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3224 [inline]
#1: ffffc9000412fd00 ((linkwatch_work).work){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3329
#2: ffffffff8f5d4908 (rtnl_mutex){+.+.}-{3:3}, at: linkwatch_event+0xe/0x60 net/core/link_watch.c:276
1 lock held by syz.4.112/6235:
#0: ffff888056636420 (sb_writers#14){.+.+}-{0:0}, at: direct_splice_actor+0x49/0x220 fs/splice.c:1163
1 lock held by syz.4.112/6253:
#0: ffff88807b9dbe30 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: filemap_invalidate_lock_shared include/linux/fs.h:846 [inline]
#0: ffff88807b9dbe30 (mapping.invalidate_lock#3){.+.+}-{3:3}, at: page_cache_ra_order+0x3e1/0xd00 mm/readahead.c:514
1 lock held by syz-executor/8028:
#0: ffffffff8f5d4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8f5d4908 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x842/0x1180 net/core/rtnetlink.c:6632
3 locks held by syz.4.404/8360:
#0: ffff888068240d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:510 [inline]
#0: ffff888068240d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2728
#1: ffff888068240078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x494/0xf60 net/bluetooth/hci_sync.c:5063
#2: ffffffff8f73f008 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8f73f008 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2593
4 locks held by syz.0.405/8381:
#0: ffff888065214d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:510 [inline]
#0: ffff888065214d88 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2728
#1: ffff888065214078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x494/0xf60 net/bluetooth/hci_sync.c:5063
#2: ffffffff8f73f008 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_disconn_cfm include/net/bluetooth/hci_core.h:1982 [inline]
#2: ffffffff8f73f008 (hci_cb_list_lock){+.+.}-{3:3}, at: hci_conn_hash_flush+0xa6/0x240 net/bluetooth/hci_conn.c:2593
#3: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:323 [inline]
#3: ffffffff8e3392f8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:939
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 30 Comm: khungtaskd Not tainted 6.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
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:162 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:223 [inline]
watchdog+0xfde/0x1020 kernel/hung_task.c:379
kthread+0x2f0/0x390 kernel/kthread.c:389
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2838 Comm: kworker/u8:11 Not tainted 6.10.0-rc7-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/07/2024
Workqueue: bat_events batadv_iv_send_outstanding_bat_ogm_packet
RIP: 0010:batadv_iv_ogm_slide_own_bcast_window net/batman-adv/bat_iv_ogm.c:751 [inline]
RIP: 0010:batadv_iv_ogm_schedule_buff net/batman-adv/bat_iv_ogm.c:825 [inline]
RIP: 0010:batadv_iv_ogm_schedule+0x70d/0x1090 net/batman-adv/bat_iv_ogm.c:868
Code: c7 c7 20 3f 33 8e 48 8b 74 24 58 e8 fd cd 2f f6 e8 38 6d 3a f6 48 8b 74 24 60 48 ff c6 48 8b 84 24 98 00 00 00 42 0f b6 04 30 <84> c0 48 8b 54 24 20 75 17 8b 02 48 39 c6 73 33 48 89 f3 e8 8b 67
RSP: 0018:ffffc9000993f9c0 EFLAGS: 00000207
RAX: 0000000000000000 RBX: 0000000000000001 RCX: ffffc9000993f903
RDX: 0000000000000003 RSI: 00000000000003f6 RDI: ffffffff8c1f1540
RBP: ffffc9000993faf8 R08: ffffffff8fac1d2f R09: 1ffffffff1f583a5
R10: dffffc0000000000 R11: fffffbfff1f583a6 R12: ffff88802cfc6000
R13: ffff8880232c9e00 R14: dffffc0000000000 R15: ffff888057c7dfa8
FS: 0000000000000000(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 000056255dfbebc0 CR3: 000000000e132000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
batadv_iv_send_outstanding_bat_ogm_packet+0x6fe/0x810 net/batman-adv/bat_iv_ogm.c:1712
process_one_work kernel/workqueue.c:3248 [inline]
process_scheduled_works+0xa2c/0x1830 kernel/workqueue.c:3329
worker_thread+0x86d/0xd50 kernel/workqueue.c:3409
kthread+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244