INFO: task syz-executor.2:5564 blocked for more than 143 seconds.
Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:29712 pid:5564 tgid:5557 ppid:5123 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5400 [inline]
__schedule+0x177f/0x4960 kernel/sched/core.c:6727
__schedule_loop kernel/sched/core.c:6802 [inline]
schedule+0x149/0x260 kernel/sched/core.c:6817
schedule_preempt_disabled+0x13/0x20 kernel/sched/core.c:6874
rwsem_down_read_slowpath kernel/locking/rwsem.c:1086 [inline]
__down_read_common kernel/locking/rwsem.c:1250 [inline]
__down_read kernel/locking/rwsem.c:1263 [inline]
down_read+0x703/0xa40 kernel/locking/rwsem.c:1528
inode_lock_shared include/linux/fs.h:812 [inline]
lookup_slow+0x45/0x70 fs/namei.c:1709
walk_component+0x2d0/0x400 fs/namei.c:2001
lookup_last fs/namei.c:2458 [inline]
path_lookupat+0x16f/0x450 fs/namei.c:2482
filename_lookup+0x255/0x610 fs/namei.c:2511
do_linkat+0x182/0x750 fs/namei.c:4655
__do_sys_linkat fs/namei.c:4703 [inline]
__se_sys_linkat fs/namei.c:4700 [inline]
__x64_sys_linkat+0xdd/0xf0 fs/namei.c:4700
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f6ed727cda9
RSP: 002b:00007f6ed7fbe0c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
RAX: ffffffffffffffda RBX: 00007f6ed73ac050 RCX: 00007f6ed727cda9
RDX: 0000000000000005 RSI: 0000000020000040 RDI: 0000000000000005
RBP: 00007f6ed72c947a R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 000000000000006e R14: 00007f6ed73ac050 R15: 00007ffde120f178
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 PID: 29 Comm: khungtaskd Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0x1e7/0x2d0 lib/dump_stack.c:106
nmi_cpu_backtrace+0x498/0x4d0 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x198/0x310 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:160 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:222 [inline]
watchdog+0xfaf/0xff0 kernel/hung_task.c:379
kthread+0x2d3/0x370 kernel/kthread.c:388
ret_from_fork+0x48/0x80 arch/x86/kernel/process.c:147
ret_from_fork_asm+0x11/0x20 arch/x86/entry/entry_64.S:242
Sending NMI from CPU 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 PID: 7564 Comm: udevd Not tainted 6.7.0-syzkaller-09928-g052d534373b7 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/17/2023
RIP: 0010:find_stack lib/stackdepot.c:467 [inline]
RIP: 0010:stack_depot_save_flags+0x198/0x650 lib/stackdepot.c:512
Code: ff ff ff ff e8 89 2b 60 06 85 c0 0f 84 c5 03 00 00 4c 8b 65 00 41 89 df eb 04 4d 8b 24 24 49 39 ec 74 6e 45 39 6c 24 10 75 f0 <41> 39 5c 24 14 75 e9 31 c0 49 8b 0c c6 49 3b 4c c4 20 75 dc 48 ff
RSP: 0018:ffffc90003a4f7d0 EFLAGS: 00000046
RAX: ffffffff8171b419 RBX: 000000000000000a RCX: ffff88801c258000
RDX: 0000000000000000 RSI: 0000000000000004 RDI: ffffffff8e0177f0
RBP: ffff88823b0b0a30 R08: ffffffff8e0177f3 R09: 1ffffffff1c02efe
R10: dffffc0000000000 R11: fffffbfff1c02eff R12: ffff88802ac71fe0
R13: 00000000d714b0a3 R14: ffffc90003a4f820 R15: 000000000000000a
FS: 00007f28fc540c80(0000) GS:ffff8880b9900000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0a6afad988 CR3: 000000002ea9d000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
kasan_save_stack mm/kasan/common.c:48 [inline]
kasan_save_track+0x51/0x70 mm/kasan/common.c:68
poison_kmalloc_redzone mm/kasan/common.c:372 [inline]
__kasan_kmalloc+0x98/0xb0 mm/kasan/common.c:389
kasan_kmalloc include/linux/kasan.h:211 [inline]
__do_kmalloc_node mm/slub.c:3981 [inline]
__kmalloc+0x22e/0x490 mm/slub.c:3994
kmalloc include/linux/slab.h:594 [inline]
kzalloc include/linux/slab.h:711 [inline]
tomoyo_encode2 security/tomoyo/realpath.c:45 [inline]
tomoyo_encode+0x26f/0x530 security/tomoyo/realpath.c:80
tomoyo_realpath_from_path+0x598/0x5e0 security/tomoyo/realpath.c:283
tomoyo_get_realpath security/tomoyo/file.c:151 [inline]
tomoyo_path_number_perm+0x23a/0x870 security/tomoyo/file.c:723
security_file_ioctl+0x71/0xa0 security/security.c:2725
__do_sys_ioctl fs/ioctl.c:865 [inline]
__se_sys_ioctl+0x47/0x170 fs/ioctl.c:857
do_syscall_x64 arch/x86/entry/common.c:52 [inline]
do_syscall_64+0xf5/0x230 arch/x86/entry/common.c:83
entry_SYSCALL_64_after_hwframe+0x63/0x6b
RIP: 0033:0x7f28fc11ad49
Code: 5c c3 48 8d 44 24 08 48 89 54 24 e0 48 89 44 24 c0 48 8d 44 24 d0 48 89 44 24 c8 b8 10 00 00 00 c7 44 24 b8 10 00 00 00 0f 05 <41> 89 c0 3d 00 f0 ff ff 76 10 48 8b 15 ae 60 0d 00 f7 d8 41 83 c8
RSP: 002b:00007fff39bb0088 EFLAGS: 00000246 ORIG_RAX: 0000000000000010
RAX: ffffffffffffffda RBX: 00007fff39bb0180 RCX: 00007f28fc11ad49
RDX: 00007fff39bb0180 RSI: 0000000080081272 RDI: 0000000000000009
RBP: 0000000000000009 R08: 0000000000000000 R09: 00007f28fc1f1c10
R10: 0000000000001000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000001