INFO: task syz-executor400:5266 blocked for more than 143 seconds.
Not tainted 6.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor400 state:D stack:27952 pid:5266 tgid:5252 ppid:5247 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 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:800 [inline]
open_last_lookups fs/namei.c:3644 [inline]
path_openat+0x7fb/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7f0af01d9bc9
RSP: 002b:00007f0af016e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0af026b6b8 RCX: 00007f0af01d9bc9
RDX: 0000000000000130 RSI: 00000000000040c5 RDI: 0000000020000080
RBP: 00007f0af026b6b0 R08: 00007ffd610a2d67 R09: 00007f0af016e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0af026b6bc
R13: 00007f0af022e0c0 R14: 0030656c69662f2e R15: 00007ffd610a2d68
INFO: task syz-executor400:5265 blocked for more than 144 seconds.
Not tainted 6.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor400 state:D stack:27952 pid:5265 tgid:5253 ppid:5246 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 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:800 [inline]
open_last_lookups fs/namei.c:3644 [inline]
path_openat+0x7fb/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7f0af01d9bc9
RSP: 002b:00007f0af016e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0af026b6b8 RCX: 00007f0af01d9bc9
RDX: 0000000000000130 RSI: 00000000000040c5 RDI: 0000000020000080
RBP: 00007f0af026b6b0 R08: 00007ffd610a2d67 R09: 00007f0af016e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0af026b6bc
R13: 00007f0af022e0c0 R14: 0030656c69662f2e R15: 00007ffd610a2d68
INFO: task syz-executor400:5268 blocked for more than 145 seconds.
Not tainted 6.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor400 state:D stack:27952 pid:5268 tgid:5254 ppid:5249 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 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:800 [inline]
open_last_lookups fs/namei.c:3644 [inline]
path_openat+0x7fb/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7f0af01d9bc9
RSP: 002b:00007f0af016e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0af026b6b8 RCX: 00007f0af01d9bc9
RDX: 0000000000000130 RSI: 00000000000040c5 RDI: 0000000020000080
RBP: 00007f0af026b6b0 R08: 00007ffd610a2d67 R09: 00007f0af016e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0af026b6bc
R13: 00007f0af022e0c0 R14: 0030656c69662f2e R15: 00007ffd610a2d68
INFO: task syz-executor400:5267 blocked for more than 146 seconds.
Not tainted 6.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor400 state:D stack:27952 pid:5267 tgid:5255 ppid:5250 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 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:800 [inline]
open_last_lookups fs/namei.c:3644 [inline]
path_openat+0x7fb/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7f0af01d9bc9
RSP: 002b:00007f0af016e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0af026b6b8 RCX: 00007f0af01d9bc9
RDX: 0000000000000130 RSI: 00000000000040c5 RDI: 0000000020000080
RBP: 00007f0af026b6b0 R08: 00007ffd610a2d67 R09: 00007f0af016e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0af026b6bc
R13: 00007f0af022e0c0 R14: 0030656c69662f2e R15: 00007ffd610a2d68
INFO: task syz-executor400:5264 blocked for more than 147 seconds.
Not tainted 6.11.0-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor400 state:D stack:27320 pid:5264 tgid:5256 ppid:5248 flags:0x00004006
Call Trace:
context_switch kernel/sched/core.c:5188 [inline]
__schedule+0x17ae/0x4a10 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:800 [inline]
open_last_lookups fs/namei.c:3644 [inline]
path_openat+0x7fb/0x3470 fs/namei.c:3883
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_open fs/open.c:1439 [inline]
__se_sys_open fs/open.c:1435 [inline]
__x64_sys_open+0x225/0x270 fs/open.c:1435
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: 0033:0x7f0af01d9bc9
RSP: 002b:00007f0af016e228 EFLAGS: 00000246 ORIG_RAX: 0000000000000002
RAX: ffffffffffffffda RBX: 00007f0af026b6b8 RCX: 00007f0af01d9bc9
RDX: 0000000000000130 RSI: 00000000000040c5 RDI: 0000000020000080
RBP: 00007f0af026b6b0 R08: 00007ffd610a2d67 R09: 00007f0af016e6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0af026b6bc
R13: 00007f0af022e0c0 R14: 0030656c69662f2e R15: 00007ffd610a2d68
Showing all locks held in the system:
1 lock held by khungtaskd/30:
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:326 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: rcu_read_lock include/linux/rcupdate.h:838 [inline]
#0: ffffffff8e738320 (rcu_read_lock){....}-{1:2}, at: debug_show_all_locks+0x55/0x2a0 kernel/locking/lockdep.c:6626
2 locks held by kswapd0/89:
2 locks held by getty/4983:
#0: ffff8880650600a0 (&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+0x6ac/0x1e00 drivers/tty/n_tty.c:2211
2 locks held by syz-executor400/5257:
1 lock held by syz-executor400/5266:
#0: ffff888075cac180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#0: ffff888075cac180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: open_last_lookups fs/namei.c:3644 [inline]
#0: ffff888075cac180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: path_openat+0x7fb/0x3470 fs/namei.c:3883
2 locks held by syz-executor400/5258:
1 lock held by syz-executor400/5265:
#0: ffff888075d146c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#0: ffff888075d146c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: open_last_lookups fs/namei.c:3644 [inline]
#0: ffff888075d146c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: path_openat+0x7fb/0x3470 fs/namei.c:3883
2 locks held by syz-executor400/5260:
1 lock held by syz-executor400/5268:
#0: ffff888075cac6c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#0: ffff888075cac6c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: open_last_lookups fs/namei.c:3644 [inline]
#0: ffff888075cac6c0 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: path_openat+0x7fb/0x3470 fs/namei.c:3883
1 lock held by syz-executor400/5261:
1 lock held by syz-executor400/5267:
#0: ffff888075d14c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#0: ffff888075d14c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: open_last_lookups fs/namei.c:3644 [inline]
#0: ffff888075d14c00 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: path_openat+0x7fb/0x3470 fs/namei.c:3883
2 locks held by syz-executor400/5259:
1 lock held by syz-executor400/5264:
#0: ffff888075d14180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: inode_lock include/linux/fs.h:800 [inline]
#0: ffff888075d14180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: open_last_lookups fs/namei.c:3644 [inline]
#0: ffff888075d14180 (&type->i_mutex_dir_key#6){++++}-{3:3}, at: path_openat+0x7fb/0x3470 fs/namei.c:3883
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.11.0-syzkaller #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+0x2f0/0x390 kernel/kthread.c:389
ret_from_fork+0x4b/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: 5260 Comm: syz-executor400 Not tainted 6.11.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
RIP: 0010:check_kcov_mode kernel/kcov.c:193 [inline]
RIP: 0010:write_comp_data kernel/kcov.c:245 [inline]
RIP: 0010:__sanitizer_cov_trace_cmp8+0x35/0x90 kernel/kcov.c:293
Code: 0c 25 c0 d6 03 00 65 8b 05 f0 47 70 7e 25 00 01 ff 00 74 10 3d 00 01 00 00 75 57 83 b9 1c 16 00 00 00 74 4e 8b 81 f8 15 00 00 <83> f8 03 75 43 48 8b 91 00 16 00 00 44 8b 89 fc 15 00 00 49 c1 e1
RSP: 0018:ffffc90003eb6cc0 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90003eb8000 RCX: ffff888025428000
RDX: ffff888025428000 RSI: ffffc90003eb7278 RDI: ffffc90003eb72e0
RBP: ffffc90003eb6da0 R08: ffffffff81414545 R09: ffffffff814140bf
R10: 0000000000000003 R11: ffff888025428000 R12: ffffc90003eb72e0
R13: dffffc0000000000 R14: ffffc90003eb0000 R15: ffffc90003eb72e8
FS: 00007f0af018f6c0(0000) GS:ffff8880b8800000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00005598d295a600 CR3: 00000000665b8000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
on_stack arch/x86/include/asm/stacktrace.h:60 [inline]
unwind_next_frame+0x1df5/0x2a00 arch/x86/kernel/unwind_orc.c:665
arch_stack_walk+0x151/0x1b0 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x118/0x1d0 kernel/stacktrace.c:122
kasan_save_stack mm/kasan/common.c:47 [inline]
kasan_save_track+0x3f/0x80 mm/kasan/common.c:68
unpoison_slab_object mm/kasan/common.c:312 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:338
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slub.c:3992 [inline]
slab_alloc_node mm/slub.c:4041 [inline]
kmem_cache_alloc_noprof+0x135/0x2a0 mm/slub.c:4048
alloc_buffer_head+0x2a/0x290 fs/buffer.c:3025
folio_alloc_buffers+0x241/0x5b0 fs/buffer.c:929
create_empty_buffers+0x3a/0x740 fs/buffer.c:1671
block_read_full_folio+0x25c/0xcd0 fs/buffer.c:2387
filemap_read_folio+0x1a0/0x790 mm/filemap.c:2355
do_read_cache_folio+0x134/0x820 mm/filemap.c:3789
do_read_cache_page+0x30/0x200 mm/filemap.c:3855
read_mapping_page include/linux/pagemap.h:907 [inline]
dir_get_page fs/sysv/dir.c:64 [inline]
sysv_find_entry+0x1af/0x410 fs/sysv/dir.c:157
sysv_inode_by_name+0x98/0x1f0 fs/sysv/dir.c:374
sysv_lookup+0x6b/0xe0 fs/sysv/namei.c:38
__lookup_slow+0x28c/0x3f0 fs/namei.c:1718
lookup_slow+0x53/0x70 fs/namei.c:1735
walk_component fs/namei.c:2039 [inline]
link_path_walk+0x99b/0xea0 fs/namei.c:2404
path_openat+0x25d/0x3470 fs/namei.c:3882
do_filp_open+0x235/0x490 fs/namei.c:3913
do_sys_openat2+0x13e/0x1d0 fs/open.c:1416
do_sys_open fs/open.c:1431 [inline]
__do_sys_openat fs/open.c:1447 [inline]
__se_sys_openat fs/open.c:1442 [inline]
__x64_sys_openat+0x247/0x2a0 fs/open.c:1442
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: 0033:0x7f0af01d9bc9
Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 b1 18 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b0 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007f0af018f228 EFLAGS: 00000246 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 00007f0af026b6a8 RCX: 00007f0af01d9bc9
RDX: 0000000000000000 RSI: 00000000200000c0 RDI: ffffffffffffff9c
RBP: 00007f0af026b6a0 R08: 00007f0af018f6c0 R09: 00007f0af018f6c0
R10: 0000000000000000 R11: 0000000000000246 R12: 00007f0af026b6ac
R13: 00007f0af022e0c0 R14: 0030656c69662f2e R15: 00007ffd610a2d68
INFO: NMI handler (nmi_cpu_backtrace_handler) took too long to run: 2.566 msecs