INFO: task syz.5.44:5556 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller-04003-gfc1dc0d50780 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.44 state:D
stack:27360 pid:5556 tgid:5513 ppid:5221 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:815 [inline]
do_lock_mount+0x112/0x3a0 fs/namespace.c:2607
lock_mount fs/namespace.c:2649 [inline]
do_loopback+0x2be/0x520 fs/namespace.c:2772
do_mount fs/namespace.c:3847 [inline]
__do_sys_mount fs/namespace.c:4055 [inline]
__se_sys_mount+0x2d6/0x3c0 fs/namespace.c:4032
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: 0033:0x7f2f1717def9
RSP: 002b:00007f2f18018038 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007f2f17336058 RCX: 00007f2f1717def9
RDX: 0000000000000000 RSI: 0000000020000340 RDI: 0000000020000380
RBP: 00007f2f171f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2f17336058 R15: 00007fff8a5e1768
INFO: task syz.5.44:5557 blocked for more than 144 seconds.
Not tainted 6.11.0-syzkaller-04003-gfc1dc0d50780 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.44 state:D stack:26896 pid:5557 tgid:5513 ppid:5221 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:815 [inline]
process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572
security_file_post_open+0xb9/0x280 security/security.c:3127
do_open fs/namei.c:3776 [inline]
path_openat+0x2ccd/0x3590 fs/namei.c:3933
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_open fs/open.c:1438 [inline]
__se_sys_open fs/open.c:1434 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1434
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: 0033:0x7f2f1717def9
RSP: 002b:00007f2f17ff7038 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f2f17336130 RCX: 00007f2f1717def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200005c0
RBP: 00007f2f171f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f2f17336130 R15: 00007fff8a5e1768
INFO: task syz.5.44:5562 blocked for more than 144 seconds.
Not tainted 6.11.0-syzkaller-04003-gfc1dc0d50780 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.44 state:D stack:26392 pid:5562 tgid:5513 ppid:5221 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:815 [inline]
process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572
security_file_post_open+0xb9/0x280 security/security.c:3127
do_open fs/namei.c:3776 [inline]
path_openat+0x2ccd/0x3590 fs/namei.c:3933
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_creat fs/open.c:1506 [inline]
__se_sys_creat fs/open.c:1500 [inline]
__x64_sys_creat+0x123/0x170 fs/open.c:1500
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: 0033:0x7f2f1717def9
RSP: 002b:00007f2f17fd6038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f2f17336208 RCX: 00007f2f1717def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000340
RBP: 00007f2f171f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2f17336208 R15: 00007fff8a5e1768
INFO: task syz.5.44:5571 blocked for more than 145 seconds.
Not tainted 6.11.0-syzkaller-04003-gfc1dc0d50780 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.5.44 state:D stack:26896 pid:5571 tgid:5513 ppid:5221 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x1800/0x4a60 kernel/sched/core.c:6529
__schedule_loop kernel/sched/core.c:6606 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6621
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6678
rwsem_down_write_slowpath+0xeeb/0x13b0 kernel/locking/rwsem.c:1178
__down_write_common kernel/locking/rwsem.c:1306 [inline]
__down_write kernel/locking/rwsem.c:1315 [inline]
down_write+0x1d7/0x220 kernel/locking/rwsem.c:1580
inode_lock include/linux/fs.h:815 [inline]
process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
ima_file_check+0xf2/0x170 security/integrity/ima/ima_main.c:572
security_file_post_open+0xb9/0x280 security/security.c:3127
do_open fs/namei.c:3776 [inline]
path_openat+0x2ccd/0x3590 fs/namei.c:3933
do_filp_open+0x235/0x490 fs/namei.c:3960
do_sys_openat2+0x13e/0x1d0 fs/open.c:1415
do_sys_open fs/open.c:1430 [inline]
__do_sys_creat fs/open.c:1506 [inline]
__se_sys_creat fs/open.c:1500 [inline]
__x64_sys_creat+0x123/0x170 fs/open.c:1500
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: 0033:0x7f2f1717def9
RSP: 002b:00007f2f17fb5038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055
RAX: ffffffffffffffda RBX: 00007f2f173362e0 RCX: 00007f2f1717def9
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000020000140
RBP: 00007f2f171f0b76 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007f2f173362e0 R15: 00007fff8a5e1768
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e938a60 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e938a60 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e938a60 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6701
3 locks held by kworker/u8:4/62:
#0: ffff88802f862948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88802f862948 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc900015d7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc900015d7d00 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: addrconf_dad_work+0xd0/0x16f0 net/ipv6/addrconf.c:4196
3 locks held by kworker/u8:6/1824:
#0: ffff88801f6fc948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3206 [inline]
#0: ffff88801f6fc948 ((wq_completion)writeback){+.+.}-{0:0}, at: process_scheduled_works+0x90a/0x1830 kernel/workqueue.c:3312
#1: ffffc90004d8fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3207 [inline]
#1: ffffc90004d8fd00 ((work_completion)(&(&wb->dwork)->work)){+.+.}-{0:0}, at: process_scheduled_works+0x945/0x1830 kernel/workqueue.c:3312
#2: ffff88805cbac0e0 (&type->s_umount_key#60){.+.+}-{3:3}, at: super_trylock_shared+0x22/0xf0 fs/super.c:562
4 locks held by kworker/1:2/2634:
#0: ffff8880b893e758 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:560
#1: ffff8880b8928948 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x441/0x770 kernel/sched/psi.c:989
#2: ffff8880b892a718 (&base->lock){-.-.}-{2:2}, at: lock_timer_base+0x112/0x240 kernel/time/timer.c:1051
#3: ffffffff9a5d28b8 (&obj_hash[i].lock){-.-.}-{2:2}, at: __queue_work+0x759/0xf50
2 locks held by dhcpcd/4892:
#0: ffff88805c21a6c8 (nlk_cb_mutex-ROUTE){+.+.}-{3:3}, at: __netlink_dump_start+0x119/0x790 net/netlink/af_netlink.c:2404
#1: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#1: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_dumpit+0x99/0x200 net/core/rtnetlink.c:6505
2 locks held by getty/4976:
#0: ffff88802ff8e0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc900031332f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6a6/0x1e00 drivers/tty/n_tty.c:2211
5 locks held by syz.5.44/5514:
#0: ffff88805cbac420 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: do_truncate+0x20c/0x310 fs/open.c:63
#2: ffff888051c00a18 (&c->snapshot_create_lock){.+.+}-{3:3}, at: bch2_truncate+0x16c/0x2c0 fs/bcachefs/io_misc.c:290
#3: ffff888051c042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:151 [inline]
#3: ffff888051c042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:250 [inline]
#3: ffff888051c042c0 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x7de/0xd20 fs/bcachefs/btree_iter.c:3200
#4: ffff888051c26690 (&c->gc_lock){.+.+}-{3:3}, at: bch2_btree_update_start+0x682/0x14e0 fs/bcachefs/btree_update_interior.c:1197
1 lock held by syz.5.44/5556:
#0: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#0: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: do_lock_mount+0x112/0x3a0 fs/namespace.c:2607
1 lock held by syz.5.44/5557:
#0: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#0: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
2 locks held by syz.5.44/5562:
#0: ffff88805cbac420 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
2 locks held by syz.5.44/5571:
#0: ffff88805cbac420 (sb_writers#16){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:515
#1: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: inode_lock include/linux/fs.h:815 [inline]
#1: ffff88805b430148 (&sb->s_type->i_mutex_key#25){+.+.}-{3:3}, at: process_measurement+0x439/0x1fb0 security/integrity/ima/ima_main.c:250
4 locks held by bch-reclaim/loo/5539:
2 locks held by syz.3.75/5988:
#0: ffff88805cbac0e0 (&type->s_umount_key#60){.+.+}-{3:3}, at: __super_lock fs/super.c:58 [inline]
#0: ffff88805cbac0e0 (&type->s_umount_key#60){.+.+}-{3:3}, at: super_lock+0x27c/0x400 fs/super.c:120
#1: ffff88805cbae7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: bdi_down_write_wb_switch_rwsem fs/fs-writeback.c:388 [inline]
#1: ffff88805cbae7d0 (&bdi->wb_switch_rwsem){+.+.}-{3:3}, at: sync_inodes_sb+0x274/0xb40 fs/fs-writeback.c:2797
2 locks held by syz-executor/6112:
#0: ffff888030144d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_dev_do_close net/bluetooth/hci_core.c:481 [inline]
#0: ffff888030144d80 (&hdev->req_lock){+.+.}-{3:3}, at: hci_unregister_dev+0x203/0x510 net/bluetooth/hci_core.c:2698
#1: ffff888030144078 (&hdev->lock){+.+.}-{3:3}, at: hci_dev_close_sync+0x572/0x11a0 net/bluetooth/hci_sync.c:5183
3 locks held by syz-executor/7065:
#0: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
#1: ffff88805d459428 (&wg->device_update_lock){+.+.}-{3:3}, at: wg_open+0x22d/0x420 drivers/net/wireguard/device.c:50
#2: ffffffff8e93de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:329 [inline]
#2: ffffffff8e93de38 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x451/0x830 kernel/rcu/tree_exp.h:965
1 lock held by syz-executor/7245:
#0: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnl_lock net/core/rtnetlink.c:79 [inline]
#0: ffffffff8fcc0bc8 (rtnl_mutex){+.+.}-{3:3}, at: rtnetlink_rcv_msg+0x6e6/0xcf0 net/core/rtnetlink.c:6643
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller-04003-gfc1dc0d50780 #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+0x241/0x360 lib/dump_stack.c:119
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+0xff4/0x1040 kernel/hung_task.c:379
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/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: 5539 Comm: bch-reclaim/loo Not tainted 6.11.0-syzkaller-04003-gfc1dc0d50780 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:__trans_next_path fs/bcachefs/btree_iter.h:92 [inline]
RIP: 0010:bch2_trans_begin+0x356/0x1a50 fs/bcachefs/btree_iter.c:3053
Code: 01 00 74 08 4c 89 ff e8 b8 2b e7 fd 44 89 e3 c1 eb 06 48 c1 e3 03 49 03 1f 49 89 dd 45 89 e7 41 83 e7 3f 48 89 d8 48 c1 e8 03 <48> b9 00 00 00 00 00 fc ff df 80 3c 08 00 74 08 48 89 df e8 82 2b
RSP: 0018:ffffc900045f7340 EFLAGS: 00000212
RAX: 1ffff11006182037 RBX: ffff888030c101b8 RCX: 1ffff11006182001
RDX: ffff88802777bc00 RSI: 0000000000000040 RDI: 0000000000000001
RBP: ffffc900045f74f0 R08: ffffffff8413f24c R09: 1ffff1100a380035
R10: dffffc0000000000 R11: ffffed100a380036 R12: 0000000000000001
R13: ffff888030c101b8 R14: ffff888030c10000 R15: 0000000000000001
FS: 0000000000000000(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007fff68926d10 CR3: 0000000028916000 CR4: 0000000000350ef0
Call Trace:
bch2_btree_write_buffer_flush_locked+0x15e/0x59f0 fs/bcachefs/btree_write_buffer.c:281
btree_write_buffer_flush_seq+0x1a43/0x1bc0 fs/bcachefs/btree_write_buffer.c:510
bch2_btree_write_buffer_journal_flush+0x4e/0x80 fs/bcachefs/btree_write_buffer.c:525
journal_flush_pins+0x5f9/0xb20 fs/bcachefs/journal_reclaim.c:565
__bch2_journal_reclaim+0x77d/0xe40 fs/bcachefs/journal_reclaim.c:697
bch2_journal_reclaim_thread+0x174/0x560 fs/bcachefs/journal_reclaim.c:739
kthread+0x2f2/0x390 kernel/kthread.c:389
ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244