INFO: task syz-executor.3:16275 blocked for more than 143 seconds.
Not tainted 6.2.0-rc7-syzkaller-00199-g420b2d431d18 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25312 pid:16275 ppid:5098 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6606
schedule+0xc3/0x190 kernel/sched/core.c:6682
__wait_on_freeing_inode fs/inode.c:2196 [inline]
find_inode_fast+0x319/0x450 fs/inode.c:950
iget_locked+0xcb/0x830 fs/inode.c:1273
__ext4_iget+0x250/0x3ec0 fs/ext4/inode.c:4861
ext4_xattr_inode_cache_find fs/ext4/xattr.c:1507 [inline]
ext4_xattr_inode_lookup_create fs/ext4/xattr.c:1543 [inline]
ext4_xattr_set_entry+0x21b8/0x3b90 fs/ext4/xattr.c:1685
ext4_xattr_block_set+0xb12/0x3680 fs/ext4/xattr.c:1991
ext4_xattr_set_handle+0xdb0/0x1570 fs/ext4/xattr.c:2406
ext4_xattr_set+0x241/0x3d0 fs/ext4/xattr.c:2508
__vfs_setxattr+0x460/0x4a0 fs/xattr.c:202
__vfs_setxattr_noperm+0x12e/0x5e0 fs/xattr.c:236
vfs_setxattr+0x221/0x420 fs/xattr.c:323
do_setxattr fs/xattr.c:608 [inline]
setxattr+0x267/0x2f0 fs/xattr.c:631
path_setxattr+0x1c0/0x2a0 fs/xattr.c:650
__do_sys_setxattr fs/xattr.c:666 [inline]
__se_sys_setxattr fs/xattr.c:662 [inline]
__x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:662
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7994e8c0f9
RSP: 002b:00007f7995b43168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f7994fac050 RCX: 00007f7994e8c0f9
RDX: 00000000200005c0 RSI: 0000000020000180 RDI: 00000000200000c0
RBP: 00007f7994ee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000002000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd28158c7f R14: 00007f7995b43300 R15: 0000000000022000
INFO: task syz-executor.3:16277 blocked for more than 143 seconds.
Not tainted 6.2.0-rc7-syzkaller-00199-g420b2d431d18 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.3 state:D stack:25280 pid:16277 ppid:5098 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5293 [inline]
__schedule+0x1409/0x43f0 kernel/sched/core.c:6606
schedule+0xc3/0x190 kernel/sched/core.c:6682
mb_cache_entry_wait_unused+0x166/0x250 fs/mbcache.c:148
ext4_evict_ea_inode+0x14a/0x2f0 fs/ext4/xattr.c:451
ext4_evict_inode+0x20b/0x1230 fs/ext4/inode.c:181
evict+0x2a4/0x620 fs/inode.c:664
ext4_xattr_set_entry+0x13db/0x3b90 fs/ext4/xattr.c:1822
ext4_xattr_block_set+0x69c/0x3680 fs/ext4/xattr.c:1922
ext4_xattr_set_handle+0xdb0/0x1570 fs/ext4/xattr.c:2406
ext4_xattr_set+0x241/0x3d0 fs/ext4/xattr.c:2508
__vfs_setxattr+0x460/0x4a0 fs/xattr.c:202
__vfs_setxattr_noperm+0x12e/0x5e0 fs/xattr.c:236
vfs_setxattr+0x221/0x420 fs/xattr.c:323
do_setxattr fs/xattr.c:608 [inline]
setxattr+0x267/0x2f0 fs/xattr.c:631
path_setxattr+0x1c0/0x2a0 fs/xattr.c:650
__do_sys_setxattr fs/xattr.c:666 [inline]
__se_sys_setxattr fs/xattr.c:662 [inline]
__x64_sys_setxattr+0xbb/0xd0 fs/xattr.c:662
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f7994e8c0f9
RSP: 002b:00007f7995b22168 EFLAGS: 00000246 ORIG_RAX: 00000000000000bc
RAX: ffffffffffffffda RBX: 00007f7994fac120 RCX: 00007f7994e8c0f9
RDX: 0000000000000000 RSI: 00000000200002c0 RDI: 0000000020000280
RBP: 00007f7994ee7ae9 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffd28158c7f R14: 00007f7995b22300 R15: 0000000000022000
Showing all locks held in the system:
1 lock held by rcu_tasks_kthre/12:
#0: ffffffff8cf23910 (rcu_tasks.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by rcu_tasks_trace/13:
#0: ffffffff8cf24110 (rcu_tasks_trace.tasks_gp_mutex){+.+.}-{3:3}, at: rcu_tasks_one_gp+0x26/0xce0 kernel/rcu/tasks.h:507
1 lock held by khungtaskd/28:
#0: ffffffff8cf23740 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire+0x0/0x30
1 lock held by syslogd/4406:
2 locks held by getty/4740:
#0: ffff88802c5d3098 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x25/0x70 drivers/tty/tty_ldisc.c:244
#1: ffffc900015a02f0 (&ldata->atomic_read_lock){+.+.}-{3:3}, at: n_tty_read+0x6ab/0x1db0 drivers/tty/n_tty.c:2177
3 locks held by syz-executor.3/16275:
#0: ffff88802b22e460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff888054540e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888054540e08 (&sb->s_type->i_mutex_key#7){++++}-{3:3}, at: vfs_setxattr+0x1e1/0x420 fs/xattr.c:322
#2: ffff888054540ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888054540ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x274/0x1570 fs/ext4/xattr.c:2321
3 locks held by syz-executor.3/16277:
#0: ffff88802b22e460 (sb_writers#4){.+.+}-{0:0}, at: mnt_want_write+0x3f/0x90 fs/namespace.c:508
#1: ffff888054648e08 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: inode_lock include/linux/fs.h:756 [inline]
#1: ffff888054648e08 (&type->i_mutex_dir_key#3){++++}-{3:3}, at: vfs_setxattr+0x1e1/0x420 fs/xattr.c:322
#2: ffff888054648ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_write_lock_xattr fs/ext4/xattr.h:155 [inline]
#2: ffff888054648ad0 (&ei->xattr_sem){++++}-{3:3}, at: ext4_xattr_set_handle+0x274/0x1570 fs/ext4/xattr.c:2321
=============================================
NMI backtrace for cpu 1
CPU: 1 PID: 28 Comm: khungtaskd Not tainted 6.2.0-rc7-syzkaller-00199-g420b2d431d18 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x4e5/0x560 lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x1b4/0x3f0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:220 [inline]
watchdog+0xf70/0xfb0 kernel/hung_task.c:377
kthread+0x270/0x300 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:308
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 4637 Comm: dhcpcd Not tainted 6.2.0-rc7-syzkaller-00199-g420b2d431d18 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023
RIP: 0010:__lock_acquire+0x348/0x1f80 kernel/locking/lockdep.c:4991
Code: c1 e8 03 80 3c 10 00 74 16 48 89 df e8 91 fa 75 00 48 8b 34 24 48 ba 00 00 00 00 00 fc ff df 4c 89 2b 48 8d 5c ee 10 48 89 d8 <48> c1 e8 03 80 3c 10 00 74 16 48 89 df e8 66 fa 75 00 48 8b 34 24
RSP: 0018:ffffc9000350f640 EFLAGS: 00000046
RAX: ffff888017fae280 RBX: ffff888017fae280 RCX: ffff888017fad7c0
RDX: dffffc0000000000 RSI: ffff888017fae1f8 RDI: ffff88802794e0a0
RBP: 000000000000000f R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: ffffffff8152d59c R14: ffff88802794e0a0 R15: 00000000000001a1
FS: 00007f5a062fc740(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffdc2ec20a8 CR3: 0000000025103000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
lock_acquire+0x235/0x630 kernel/locking/lockdep.c:5668
down_write+0x3a/0x60 kernel/locking/rwsem.c:1562
i_mmap_lock_write include/linux/fs.h:466 [inline]
dup_mmap kernel/fork.c:668 [inline]
dup_mm kernel/fork.c:1548 [inline]
copy_mm+0xc1c/0x15f0 kernel/fork.c:1597
copy_process+0x18fa/0x3f50 kernel/fork.c:2266
kernel_clone+0x22d/0x990 kernel/fork.c:2681
__do_sys_clone kernel/fork.c:2822 [inline]
__se_sys_clone kernel/fork.c:2806 [inline]
__x64_sys_clone+0x235/0x280 kernel/fork.c:2806
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x41/0xc0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f5a063c20f2
Code: ed 0f 85 11 01 00 00 64 48 8b 04 25 10 00 00 00 45 31 c0 31 d2 31 f6 bf 11 00 20 01 4c 8d 90 d0 02 00 00 b8 38 00 00 00 0f 05 <48> 3d 00 f0 ff ff 0f 87 a2 00 00 00 41 89 c5 85 c0 0f 85 af 00 00
RSP: 002b:00007ffdc2ea17c0 EFLAGS: 00000246 ORIG_RAX: 0000000000000038
RAX: ffffffffffffffda RBX: 00005572c9c60618 RCX: 00007f5a063c20f2
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000001200011
RBP: 0000000000000000 R08: 0000000000000000 R09: 00005572c9c605e0
R10: 00007f5a062fca10 R11: 0000000000000246 R12: 0000000000000000
R13: 00005572c9c605e0 R14: 0000000000000000 R15: 00005572c9c60614