INFO: task syz.1.382:9760 blocked for more than 143 seconds.
Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.382 state:D stack:20024 pid:9760 tgid:9744 ppid:8722 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
rwsem_down_write_slowpath+0xbec/0x1030 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write_nested+0x1b5/0x200 kernel/locking/rwsem.c:1694
vfs_rename+0x69a/0xec0 fs/namei.c:5092
do_renameat2+0x878/0xc50 fs/namei.c:5270
__do_sys_rename fs/namei.c:5317 [inline]
__se_sys_rename fs/namei.c:5315 [inline]
__x64_sys_rename+0x82/0x90 fs/namei.c:5315
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3aa18e969
RSP: 002b:00007fd3aaff2038 EFLAGS: 00000246 ORIG_RAX: 0000000000000052
RAX: ffffffffffffffda RBX: 00007fd3aa3b6080 RCX: 00007fd3aa18e969
RDX: 0000000000000000 RSI: 0000200000000040 RDI: 0000200000000000
RBP: 00007fd3aa210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd3aa3b6080 R15: 00007ffc03dc9c48
INFO: task syz.1.382:9761 blocked for more than 144 seconds.
Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.382 state:D stack:27416 pid:9761 tgid:9744 ppid:8722 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x168f/0x4c70 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0x165/0x360 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
rwsem_down_write_slowpath+0xbec/0x1030 kernel/locking/rwsem.c:1176
__down_write_common kernel/locking/rwsem.c:1304 [inline]
__down_write kernel/locking/rwsem.c:1313 [inline]
down_write+0x1ab/0x1f0 kernel/locking/rwsem.c:1578
inode_lock include/linux/fs.h:867 [inline]
process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:260
ima_file_check+0xd7/0x120 security/integrity/ima/ima_main.c:613
security_file_post_open+0xbb/0x290 security/security.c:3130
do_open fs/namei.c:3882 [inline]
path_openat+0x2f26/0x3830 fs/namei.c:4039
do_filp_open+0x1fa/0x410 fs/namei.c:4066
do_sys_openat2+0x121/0x1c0 fs/open.c:1429
do_sys_open fs/open.c:1444 [inline]
__do_sys_openat fs/open.c:1460 [inline]
__se_sys_openat fs/open.c:1455 [inline]
__x64_sys_openat+0x138/0x170 fs/open.c:1455
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd3aa18e969
RSP: 002b:00007fd3aafd1038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007fd3aa3b6160 RCX: 00007fd3aa18e969
RDX: 0000000000000042 RSI: 00002000000003c0 RDI: ffffffffffffff9c
RBP: 00007fd3aa210ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 00007fd3aa3b6160 R15: 00007ffc03dc9c48
Showing all locks held in the system:
3 locks held by kworker/u8:1/13:
#0: ffff8880b89399d8 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x2a/0x140 kernel/sched/core.c:605
#1: ffff8880b8923b08 (&per_cpu_ptr(group->pcpu, cpu)->seq){-.-.}-{0:0}, at: psi_task_switch+0x39e/0x6d0 kernel/sched/psi.c:987
#2: ffff8880b8925558 (&base->lock){-.-.}-{2:2}, at: lock_timer_base kernel/time/timer.c:1046 [inline]
#2: ffff8880b8925558 (&base->lock){-.-.}-{2:2}, at: __mod_timer+0x1ae/0xf30 kernel/time/timer.c:1127
1 lock held by khungtaskd/31:
#0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8df3b860 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x2e/0x180 kernel/locking/lockdep.c:6764
2 locks held by getty/5577:
#0: ffff88814dcd40a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:243
#1: ffffc90002ffe2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x43e/0x1400 drivers/tty/n_tty.c:2222
5 locks held by syz.1.382/9745:
#0: ffff88805373e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:556
#1: ffff88805f2af330 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88805f2af330 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: do_truncate+0x186/0x220 fs/open.c:63
#2: ffff88804e100a70 (&c->snapshot_create_lock){.+.+}-{4:4}, at: bch2_truncate+0xeb/0x200 fs/bcachefs/io_misc.c:295
#3: ffff88804e104228 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_lock_acquire include/linux/srcu.h:161 [inline]
#3: ffff88804e104228 (&c->btree_trans_barrier){.+.+}-{0:0}, at: srcu_read_lock include/linux/srcu.h:253 [inline]
#3: ffff88804e104228 (&c->btree_trans_barrier){.+.+}-{0:0}, at: __bch2_trans_get+0x806/0xda0 fs/bcachefs/btree_iter.c:3385
#4: ffff88804e126590 (&c->gc_lock){.+.+}-{4:4}, at: bch2_btree_update_start+0x68f/0x14c0 fs/bcachefs/btree_update_interior.c:1179
4 locks held by syz.1.382/9760:
#0: ffff88805373e420 (sb_writers#12){.+.+}-{0:0}, at: mnt_want_write+0x41/0x90 fs/namespace.c:556
#1: ffff88805f2aeb98 (&sb->s_type->i_mutex_key#20/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:902 [inline]
#1: ffff88805f2aeb98 (&sb->s_type->i_mutex_key#20/1){+.+.}-{4:4}, at: lock_rename fs/namei.c:3265 [inline]
#1: ffff88805f2aeb98 (&sb->s_type->i_mutex_key#20/1){+.+.}-{4:4}, at: do_renameat2+0x3dd/0xc50 fs/namei.c:5216
#2: ffff88805f2ad4d0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#2: ffff88805f2ad4d0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: lock_two_nondirectories+0xe7/0x180 fs/inode.c:1233
#3: ffff88805f2af330 (&sb->s_type->i_mutex_key#20/4){+.+.}-{4:4}, at: vfs_rename+0x69a/0xec0 fs/namei.c:5092
1 lock held by syz.1.382/9761:
#0: ffff88805f2ad4d0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#0: ffff88805f2ad4d0 (&sb->s_type->i_mutex_key#20){++++}-{4:4}, at: process_measurement+0x3d8/0x1a40 security/integrity/ima/ima_main.c:260
2 locks held by bch-copygc/loop/9756:
2 locks held by syz-executor/11041:
#0: ffff88805a5880e0 (&type->s_umount_key#60){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88805a5880e0 (&type->s_umount_key#60){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88805a5880e0 (&type->s_umount_key#60){++++}-{4:4}, at: deactivate_super+0xa9/0xe0 fs/super.c:505
#1: ffffffff8df41200 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x4c/0x570 kernel/rcu/tree.c:3774
3 locks held by syz-executor/11377:
#0: ffffffff8f2e1fc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_lock net/core/rtnetlink.c:80 [inline]
#0: ffffffff8f2e1fc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_nets_lock net/core/rtnetlink.c:341 [inline]
#0: ffffffff8f2e1fc8 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_newlink+0x8db/0x1c70 net/core/rtnetlink.c:4064
#1: ffff88802f7094e8 (&wg->device_update_lock){+.+.}-{4:4}, at: wg_open+0x227/0x420 drivers/net/wireguard/device.c:50
#2: ffffffff8df41338 (rcu_state.exp_mutex){+.+.}-{4:4}, at: exp_funnel_lock kernel/rcu/tree_exp.h:336 [inline]
#2: ffffffff8df41338 (rcu_state.exp_mutex){+.+.}-{4:4}, at: synchronize_rcu_expedited+0x3b7/0x730 kernel/rcu/tree_exp.h:998
1 lock held by rm/11792:
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
dump_stack_lvl+0x189/0x250 lib/dump_stack.c:120
nmi_cpu_backtrace+0x39e/0x3d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x17a/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xfee/0x1030 kernel/hung_task.c:437
kthread+0x70e/0x8a0 kernel/kthread.c:464
ret_from_fork+0x4b/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 11780 Comm: dhcpcd-run-hook Not tainted 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full)
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:lockdep_hardirqs_on_prepare+0x75/0x2a0 kernel/locking/lockdep.c:4392
Code: 8b 05 67 43 d4 10 85 c0 0f 85 6d 01 00 00 83 3d 00 31 df 17 00 75 3e 48 c7 04 24 00 00 00 00 9c 8f 04 24 f7 04 24 00 02 00 00 <0f> 85 8c 01 00 00 83 3d de 30 df 17 00 75 1c 80 3d ba 71 df 0d 01
RSP: 0018:ffffc90004a3f800 EFLAGS: 00000046
RAX: 0000000000000000 RBX: 0000000000000a02 RCX: 7da628fcfa07cc00
RDX: 0000000000000000 RSI: ffffffff8bc0fa40 RDI: ffffffff8bc0fa00
RBP: ffffc90004a3f8d0 R08: ffffffff8f7da977 R09: 1ffffffff1efb52e
R10: dffffc0000000000 R11: fffffbfff1efb52f R12: dffffc0000000000
R13: 1ffff92000947f28 R14: ffffffff99aabb58 R15: 1ffff92000947f08
FS: 0000000000000000(0000) GS:ffff888126100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000559e12464131 CR3: 000000000dd36000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
trace_hardirqs_on+0x28/0x40 kernel/trace/trace_preemptirq.c:78
__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:151 [inline]
_raw_spin_unlock_irqrestore+0x85/0x110 kernel/locking/spinlock.c:194
debug_rcu_head_queue kernel/rcu/rcu.h:225 [inline]
__call_rcu_common kernel/rcu/tree.c:3067 [inline]
call_rcu+0xae/0x990 kernel/rcu/tree.c:3202
slab_free_hook mm/slub.c:2362 [inline]
slab_free mm/slub.c:4656 [inline]
kmem_cache_free+0x301/0x3f0 mm/slub.c:4758
exit_mmap+0x593/0xba0 mm/mmap.c:1309
__mmput+0x118/0x410 kernel/fork.c:1379
exit_mm+0x1da/0x2c0 kernel/exit.c:589
do_exit+0x859/0x2550 kernel/exit.c:940
do_group_exit+0x21c/0x2d0 kernel/exit.c:1102
__do_sys_exit_group kernel/exit.c:1113 [inline]
__se_sys_exit_group kernel/exit.c:1111 [inline]
__x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1111
x64_sys_call+0x21ba/0x21c0 arch/x86/include/generated/asm/syscalls_64.h:232
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xf6/0x210 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fb6806a0a90
Code: Unable to access opcode bytes at 0x7fb6806a0a66.
RSP: 002b:00007fffe483d7d8 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7
RAX: ffffffffffffffda RBX: 0000559e12458910 RCX: 00007fb6806a0a90
RDX: 00000000000000e7 RSI: 000000000000003c RDI: 0000000000000000
RBP: 00007fffe483db08 R08: 0000559e12458c58 R09: 7262cb87b24fc395
R10: 0000000000000000 R11: 0000000000000246 R12: 00007fffe483db00
R13: 00007fffe483db10 R14: 0000559df522c169 R15: 00007fb68089fa80