INFO: task syz-executor.2:21354 blocked for more than 143 seconds.
Not tainted 6.0.0-rc6-next-20220923-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor.2 state:D stack:28088 pid:21354 ppid:3639 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5194 [inline]
__schedule+0xbd2/0x55b0 kernel/sched/core.c:6506
schedule+0xda/0x1b0 kernel/sched/core.c:6582
rwsem_down_read_slowpath+0x59f/0xb10 kernel/locking/rwsem.c:1095
__down_read_common kernel/locking/rwsem.c:1260 [inline]
__down_read kernel/locking/rwsem.c:1269 [inline]
down_read+0xe2/0x450 kernel/locking/rwsem.c:1511
inode_lock_shared include/linux/fs.h:766 [inline]
lookup_slow fs/namei.c:1701 [inline]
walk_component+0x332/0x5a0 fs/namei.c:1993
lookup_last fs/namei.c:2450 [inline]
path_lookupat+0x1ba/0x840 fs/namei.c:2474
filename_lookup+0x1ce/0x590 fs/namei.c:2503
do_linkat+0x10f/0x5e0 fs/namei.c:4557
__do_sys_linkat fs/namei.c:4605 [inline]
__se_sys_linkat fs/namei.c:4602 [inline]
__x64_sys_linkat+0xf0/0x130 fs/namei.c:4602
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7f8d8288a669
RSP: 002b:00007f8d83a80168 EFLAGS: 00000246 ORIG_RAX: 0000000000000109
RAX: ffffffffffffffda RBX: 00007f8d829ac120 RCX: 00007f8d8288a669
RDX: 0000000000000005 RSI: 0000000020000080 RDI: 0000000000000005
RBP: 00007f8d828e5560 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000200000c0 R11: 0000000000000246 R12: 0000000000000000
R13: 00007ffc5b4e190f R14: 00007f8d83a80300 R15: 0000000000022000
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 PID: 29 Comm: khungtaskd Not tainted 6.0.0-rc6-next-20220923-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
Call Trace:
__dump_stack lib/dump_stack.c:88 [inline]
dump_stack_lvl+0xcd/0x134 lib/dump_stack.c:106
nmi_cpu_backtrace.cold+0x24/0x18a lib/nmi_backtrace.c:111
nmi_trigger_cpumask_backtrace+0x32f/0x3c0 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:148 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:212 [inline]
watchdog+0xc6b/0xfc0 kernel/hung_task.c:369
kthread+0x2e4/0x3a0 kernel/kthread.c:376
ret_from_fork+0x1f/0x30 arch/x86/entry/entry_64.S:306
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 PID: 21881 Comm: syz-executor.2 Not tainted 6.0.0-rc6-next-20220923-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/26/2022
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:29 [inline]
RIP: 0010:rcu_dynticks_curr_cpu_in_eqs include/linux/context_tracking.h:121 [inline]
RIP: 0010:rcu_is_watching+0x43/0xb0 kernel/rcu/tree.c:719
Code: c5 77 7a 48 8d 3c ed a0 f8 a3 8b 48 b8 00 00 00 00 00 fc ff df 48 89 fa 48 c1 ea 03 80 3c 02 00 75 54 48 03 1c ed a0 f8 a3 8b <48> b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 48
RSP: 0018:ffffc9000389f2f0 EFLAGS: 00000286
RAX: dffffc0000000000 RBX: ffff8880b9a34c48 RCX: 1ffffffff1bc06f0
RDX: 1ffffffff1747f14 RSI: 0000000000000001 RDI: ffffffff8ba3f8a0
RBP: 0000000000000000 R08: 0000000000000007 R09: ffffffffff600000
R10: 00007fe371a8a000 R11: 000000000008c07e R12: ffffc9000389f400
R13: 0000000000000000 R14: ffff888075c89d40 R15: ffffea00009829c0
FS: 00007fe372c2a700(0000) GS:ffff8880b9a00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f0f0b7a8000 CR3: 000000007d2aa000 CR4: 00000000003506f0
Call Trace:
kernel_text_address kernel/extable.c:113 [inline]
kernel_text_address+0x21/0x80 kernel/extable.c:94
__kernel_text_address+0x9/0x30 kernel/extable.c:79
unwind_get_return_address arch/x86/kernel/unwind_orc.c:323 [inline]
unwind_get_return_address+0x51/0x90 arch/x86/kernel/unwind_orc.c:318
arch_stack_walk+0x93/0xe0 arch/x86/kernel/stacktrace.c:26
stack_trace_save+0x8c/0xc0 kernel/stacktrace.c:122
kasan_save_stack+0x1e/0x40 mm/kasan/common.c:45
kasan_set_track+0x21/0x30 mm/kasan/common.c:52
kasan_save_free_info+0x2a/0x40 mm/kasan/generic.c:511
____kasan_slab_free mm/kasan/common.c:236 [inline]
____kasan_slab_free+0x160/0x1c0 mm/kasan/common.c:200
kasan_slab_free include/linux/kasan.h:177 [inline]
slab_free_hook mm/slub.c:1669 [inline]
slab_free_freelist_hook+0x8b/0x1c0 mm/slub.c:1695
slab_free mm/slub.c:3599 [inline]
__kmem_cache_free+0xab/0x3b0 mm/slub.c:3612
memcg_free_slab_cgroups mm/slab.h:473 [inline]
unaccount_slab mm/slab.h:662 [inline]
__free_slab+0x9a/0x150 mm/slub.c:1952
__unfreeze_partials+0x17c/0x1a0 mm/slub.c:2532
qlink_free mm/kasan/quarantine.c:168 [inline]
qlist_free_all+0x6a/0x170 mm/kasan/quarantine.c:187
kasan_quarantine_reduce+0x180/0x200 mm/kasan/quarantine.c:294
__kasan_slab_alloc+0x62/0x80 mm/kasan/common.c:302
kasan_slab_alloc include/linux/kasan.h:201 [inline]
slab_post_alloc_hook mm/slab.h:754 [inline]
slab_alloc_node mm/slub.c:3336 [inline]
slab_alloc mm/slub.c:3344 [inline]
__kmem_cache_alloc_lru mm/slub.c:3351 [inline]
kmem_cache_alloc+0x2b7/0x3d0 mm/slub.c:3360
kmem_cache_zalloc include/linux/slab.h:685 [inline]
jbd2_alloc_handle include/linux/jbd2.h:1596 [inline]
new_handle fs/jbd2/transaction.c:476 [inline]
jbd2__journal_start+0x191/0x9b0 fs/jbd2/transaction.c:503
__ext4_journal_start_sb+0x41d/0x530 fs/ext4/ext4_jbd2.c:105
__ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline]
ext4_dirty_inode+0x9d/0x110 fs/ext4/inode.c:6000
__mark_inode_dirty+0x507/0x1260 fs/fs-writeback.c:2381
mark_inode_dirty include/linux/fs.h:2465 [inline]
generic_write_end+0x350/0x440 fs/buffer.c:2184
ext4_da_write_end+0x1f1/0xa20 fs/ext4/inode.c:3089
generic_perform_write+0x312/0x570 mm/filemap.c:3764
ext4_buffered_write_iter+0x15b/0x460 fs/ext4/file.c:285
ext4_file_write_iter+0x8b8/0x1740 fs/ext4/file.c:694
call_write_iter include/linux/fs.h:2190 [inline]
new_sync_write fs/read_write.c:491 [inline]
vfs_write+0x9e9/0xdd0 fs/read_write.c:578
ksys_write+0x127/0x250 fs/read_write.c:631
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x35/0xb0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x63/0xcd
RIP: 0033:0x7fe371a8a669
Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 b8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fe372c2a168 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 00007fe371babf80 RCX: 00007fe371a8a669
RDX: 000000000208e24b RSI: 0000000020000440 RDI: 0000000000000006
RBP: 00007fe371ae5560 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fffe158ca5f R14: 00007fe372c2a300 R15: 0000000000022000