INFO: task syz-executor.2:19899 blocked for more than 144 seconds.
Not tainted 5.15.137-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:25728 pid:19899 ppid: 3535 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5026 [inline]
__schedule+0x12c4/0x45b0 kernel/sched/core.c:6372
schedule+0x11b/0x1f0 kernel/sched/core.c:6455
request_wait_answer fs/fuse/dev.c:411 [inline]
__fuse_request_send fs/fuse/dev.c:430 [inline]
fuse_simple_request+0x112f/0x1a00 fs/fuse/dev.c:515
fuse_lookup_name+0x354/0x820 fs/fuse/dir.c:383
fuse_lookup+0x17e/0x600 fs/fuse/dir.c:424
__lookup_slow+0x275/0x3d0 fs/namei.c:1659
lookup_slow+0x53/0x70 fs/namei.c:1676
walk_component+0x48c/0x610 fs/namei.c:1972
lookup_last fs/namei.c:2427 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2451
filename_lookup+0x230/0x5c0 fs/namei.c:2480
user_path_at_empty+0x40/0x180 fs/namei.c:2853
user_path_at include/linux/namei.h:57 [inline]
vfs_statx+0x106/0x3b0 fs/stat.c:221
vfs_fstatat fs/stat.c:243 [inline]
__do_sys_newfstatat fs/stat.c:411 [inline]
__se_sys_newfstatat fs/stat.c:405 [inline]
__x64_sys_newfstatat+0x12c/0x1b0 fs/stat.c:405
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f394c415ae9
RSP: 002b:00007f394a9760c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000106
RAX: ffffffffffffffda RBX: 00007f394c535050 RCX: 00007f394c415ae9
RDX: 0000000000000000 RSI: 00000000200004c0 RDI: ffffffffffffff9c
RBP: 00007f394c46147a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f394c535050 R15: 00007ffcbceebc48
Showing all locks held in the system:
1 lock held by khungtaskd/27:
#0: ffffffff8c91f020 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
2 locks held by getty/3261:
#0: ffff88814aba1098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x21/0x70 drivers/tty/tty_ldisc.c:252
#1: ffffc90002bb32e8 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6af/0x1db0 drivers/tty/n_tty.c:2158
3 locks held by kworker/u4:18/6495:
4 locks held by kworker/u4:20/14849:
#0: ffff888011dc5138 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003c37d20 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
#2: ffffffff8d9cdb50 (pernet_ops_rwsem){++++}-{3:3}, at: cleanup_net+0xf1/0xb60 net/core/net_namespace.c:558
#3: ffffffff8c9234f0 (rcu_state.barrier_mutex){+.+.}-{3:3}, at: rcu_barrier+0x9c/0x4e0 kernel/rcu/tree.c:4018
2 locks held by kworker/u4:28/14919:
#0: ffff888011c79138 ((wq_completion)events_unbound){+.+.}-{0:0}, at: process_one_work+0x78a/0x10c0 kernel/workqueue.c:2283
#1: ffffc90003b27d20 ((work_completion)(&sub_info->work)){+.+.}-{0:0}, at: process_one_work+0x7d0/0x10c0 kernel/workqueue.c:2285
3 locks held by kworker/u4:42/15156:
2 locks held by syz-executor.2/19899:
#0: ffff888049411590 (&type->i_mutex_dir_key#20){.+.+}-{3:3}, at: inode_lock_shared include/linux/fs.h:797 [inline]
#0: ffff888049411590 (&type->i_mutex_dir_key#20){.+.+}-{3:3}, at: lookup_slow+0x45/0x70 fs/namei.c:1675
#1: ffff8880494119f8 (&fi->mutex){+.+.}-{3:3}, at: fuse_lock_inode+0xcf/0x120 fs/fuse/inode.c:436
1 lock held by syz-executor.5/21440:
#0: ffff88807b058d20 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1668 [inline]
#0: ffff88807b058d20 (sk_lock-AF_INET6){+.+.}-{0:0}, at: mptcp_stream_connect+0xb1/0x8b0 net/mptcp/protocol.c:3290
1 lock held by syz-executor.5/21446:
#0: ffff88807b058d20 (sk_lock-AF_INET6){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1668 [inline]
#0: ffff88807b058d20 (sk_lock-AF_INET6){+.+.}-{0:0}, at: mptcp_stream_connect+0xb1/0x8b0 net/mptcp/protocol.c:3290
2 locks held by syz-executor.0/21441:
#0: ffff88801bb59698 (&net->xfrm.xfrm_cfg_mutex){+.+.}-{3:3}, at: pfkey_sendmsg+0x426/0xfc0 net/key/af_key.c:3698
#1: ffffffff8dafaa48 (pfkey_mutex){+.+.}-{3:3}, at: pfkey_register+0x108/0x860 net/key/af_key.c:1700
1 lock held by syz-executor.0/21445:
#0: ffffffff8dafaa48 (pfkey_mutex){+.+.}-{3:3}, at: pfkey_insert net/key/af_key.c:120 [inline]
#0: ffffffff8dafaa48 (pfkey_mutex){+.+.}-{3:3}, at: pfkey_create+0x1e5/0x580 net/key/af_key.c:167
4 locks held by syz-executor.0/21448:
#0: ffff888024b18460 (sb_writers#5){.+.+}-{0:0}, at: mnt_want_write_file+0x5a/0x1f0 fs/namespace.c:421
#1: ffff88804b4535c8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#1: ffff88804b4535c8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: vfs_fileattr_set+0x135/0xd30 fs/ioctl.c:685
#2: ffff888024b1abd8 (&sbi->s_writepages_rwsem){++++}-{0:0}, at: ext4_ind_migrate+0x254/0x760 fs/ext4/migrate.c:625
#3: ffffffff8c9235e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:322 [inline]
#3: ffffffff8c9235e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x350/0x740 kernel/rcu/tree_exp.h:845
1 lock held by syz-executor.0/21452:
#0: ffff88804b4535c8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: inode_lock include/linux/fs.h:787 [inline]
#0: ffff88804b4535c8 (&sb->s_type->i_mutex_key#9){++++}-{3:3}, at: process_measurement+0x435/0x1d60 security/integrity/ima/ima_main.c:241
1 lock held by syz-executor.1/21439:
#0: ffff888147217468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
2 locks held by syz-executor.3/21442:
#0: ffffffff8d9d9848 (rtnl_mutex){+.+.}-{3:3}, at: ppp_release+0x86/0x1f0 drivers/net/ppp/ppp_generic.c:404
#1: ffffffff8c9235e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: exp_funnel_lock kernel/rcu/tree_exp.h:290 [inline]
#1: ffffffff8c9235e8 (rcu_state.exp_mutex){+.+.}-{3:3}, at: synchronize_rcu_expedited+0x280/0x740 kernel/rcu/tree_exp.h:845
1 lock held by syz-executor.4/21450:
#0: ffff888147230468 (&lo->lo_mutex){+.+.}-{3:3}, at: __loop_clr_fd+0xa9/0xbe0 drivers/block/loop.c:1365
1 lock held by dhcpcd/21456:
#0: ffff88807bb44120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: lock_sock include/net/sock.h:1668 [inline]
#0: ffff88807bb44120 (sk_lock-AF_PACKET){+.+.}-{0:0}, at: packet_do_bind+0x33/0xd50 net/packet/af_packet.c:3164
1 lock held by syz-executor.2/21479:
#0: ffff8880b9b39718 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x26/0x140 kernel/sched/core.c:475
2 locks held by modprobe/21499:
=============================================
NMI backtrace for cpu 0
CPU: 0 PID: 27 Comm: khungtaskd Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e3/0x2cb lib/dump_stack.c:106
nmi_cpu_backtrace+0x46a/0x4a0 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x181/0x2a0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:210 [inline]
watchdog+0xe72/0xeb0 kernel/hung_task.c:295
kthread+0x3f6/0x4f0 kernel/kthread.c:319
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:298
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 2961 Comm: udevd Not tainted 5.15.137-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/06/2023
RIP: 0010:check_region_inline mm/kasan/generic.c:172 [inline]
RIP: 0010:kasan_check_range+0x14/0x290 mm/kasan/generic.c:189
Code: ff c3 0f 0b b8 ea ff ff ff c3 cc cc cc cc cc cc cc cc cc cc cc cc 55 41 57 41 56 53 b0 01 48 85 f6 0f 84 9a 01 00 00 48 89 fd <48> 01 f5 0f 82 59 02 00 00 48 89 fd 48 c1 ed 2f 81 fd ff ff 01 00
RSP: 0018:ffffc90002caf690 EFLAGS: 00000002
RAX: 0000000000000001 RBX: 0000000000000070 RCX: ffffffff8162ea18
RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffffffff8fbcd108
RBP: ffffffff8fbcd108 R08: dffffc0000000000 R09: fffffbfff1f79a22
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: dffffc0000000000 R14: 0000000000000080 R15: ffff88807dfdc670
FS: 00007f197a7e1c80(0000) GS:ffff8880b9b00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f003aa7c440 CR3: 00000000220bd000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
instrument_atomic_read include/linux/instrumented.h:71 [inline]
test_bit include/asm-generic/bitops/instrumented-non-atomic.h:134 [inline]
hlock_class kernel/locking/lockdep.c:197 [inline]
mark_lock+0x98/0x340 kernel/locking/lockdep.c:4568
__lock_acquire+0xc78/0x1ff0 kernel/locking/lockdep.c:4965
lock_acquire+0x1db/0x4f0 kernel/locking/lockdep.c:5622
down_read+0x45/0x2e0 kernel/locking/rwsem.c:1488
kernfs_iop_permission+0x6a/0x360 fs/kernfs/inode.c:284
do_inode_permission fs/namei.c:457 [inline]
inode_permission+0x22f/0x450 fs/namei.c:524
may_lookup fs/namei.c:1689 [inline]
link_path_walk+0x2be/0xd90 fs/namei.c:2241
path_lookupat+0xa9/0x450 fs/namei.c:2450
filename_lookup+0x230/0x5c0 fs/namei.c:2480
user_path_at_empty+0x40/0x180 fs/namei.c:2853
do_readlinkat+0x114/0x3a0 fs/stat.c:442
__do_sys_readlink fs/stat.c:475 [inline]
__se_sys_readlink fs/stat.c:472 [inline]
__x64_sys_readlink+0x7b/0x90 fs/stat.c:472
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x3d/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x61/0xcb
RIP: 0033:0x7f197a90dd47
Code: 73 01 c3 48 8b 0d e1 90 0d 00 f7 d8 64 89 01 48 83 c8 ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 b8 59 00 00 00 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 8b 0d b1 90 0d 00 f7 d8 64 89 01 48
RSP: 002b:00007fff92211d58 EFLAGS: 00000246 ORIG_RAX: 0000000000000059
RAX: ffffffffffffffda RBX: 00007fff92211d68 RCX: 00007f197a90dd47
RDX: 0000000000000400 RSI: 00007fff92211d68 RDI: 00007fff92212248
RBP: 0000000000000400 R08: 000055c1a8953db4 R09: 0000000000000000
R10: 0000000000000812 R11: 0000000000000246 R12: 00007fff92212248
R13: 00007fff922121b8 R14: 000055c1a8941910 R15: 0000000000000000