INFO: task syz-executor:5234 blocked for more than 146 seconds.
Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor state:D stack:21392 pid:5234 tgid:5234 ppid:1 flags:0x00004004
Call Trace:
context_switch kernel/sched/core.c:5322 [inline]
__schedule+0x1895/0x4b30 kernel/sched/core.c:6682
__schedule_loop kernel/sched/core.c:6759 [inline]
schedule+0x14b/0x320 kernel/sched/core.c:6774
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6831
rwsem_down_read_slowpath kernel/locking/rwsem.c:1084 [inline]
__down_read_common kernel/locking/rwsem.c:1248 [inline]
__down_read kernel/locking/rwsem.c:1261 [inline]
down_read+0x705/0xa40 kernel/locking/rwsem.c:1526
__gfs2_trans_begin+0x55d/0x950 fs/gfs2/trans.c:87
gfs2_trans_begin+0x71/0xe0 fs/gfs2/trans.c:118
gfs2_write_jdata_batch fs/gfs2/aops.c:194 [inline]
gfs2_write_cache_jdata+0x60e/0x1fa0 fs/gfs2/aops.c:323
gfs2_jdata_writepages+0x85/0x160 fs/gfs2/aops.c:366
gfs2_ail1_start_one fs/gfs2/log.c:134 [inline]
gfs2_ail1_flush+0xb8b/0xf50 fs/gfs2/log.c:215
gfs2_ail1_start fs/gfs2/log.c:246 [inline]
empty_ail1_list+0x1a5/0x3c0 fs/gfs2/log.c:978
gfs2_log_flush+0x20f2/0x2610 fs/gfs2/log.c:1130
gfs2_kill_sb+0x5b/0x350 fs/gfs2/ops_fstype.c:1775
deactivate_locked_super+0xc4/0x130 fs/super.c:473
cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
task_work_run+0x24f/0x310 kernel/task_work.c:228
resume_user_mode_work include/linux/resume_user_mode.h:50 [inline]
exit_to_user_mode_loop kernel/entry/common.c:114 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:328 [inline]
__syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
syscall_exit_to_user_mode+0x168/0x370 kernel/entry/common.c:218
do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fd96f77f327
RSP: 002b:00007ffec815be18 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007fd96f77f327
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007ffec815bed0
RBP: 00007ffec815bed0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007ffec815cf50
R13: 00007fd96f7f0134 R14: 0000000000012a8c R15: 00007ffec815cf90
INFO: lockdep is turned off.
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x241/0x360 lib/dump_stack.c:120
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 0 to CPUs 1:
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 53 Comm: kworker/u8:3 Not tainted 6.12.0-rc2-next-20241008-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
Workqueue: bat_events batadv_bla_periodic_work
RIP: 0010:stack_trace_consume_entry+0x72/0x280 kernel/stacktrace.c:89
Code: b6 04 14 84 c0 0f 85 1a 01 00 00 44 3b 45 00 73 3c 48 8d 7b 0c 49 89 fd 49 c1 ed 03 41 0f b6 44 15 00 84 c0 0f 85 36 01 00 00 <44> 8b 37 45 85 f6 74 22 41 ff ce 41 0f b6 44 15 00 84 c0 0f 85 69
RSP: 0018:ffffc90000be7390 EFLAGS: 00000246
RAX: 0000000000000000 RBX: ffffc90000be74c0 RCX: ffffffff917c3000
RDX: dffffc0000000000 RSI: ffffffff81608fa0 RDI: ffffc90000be74cc
RBP: ffffc90000be74c8 R08: 0000000000000009 R09: ffffc90000be74d0
R10: ffffc90000be7430 R11: ffffffff8180a490 R12: 1ffff9200017ce99
R13: 1ffff9200017ce99 R14: ffffc90000be74c0 R15: 1ffff9200017ce9a
FS: 0000000000000000(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f48d94c2723 CR3: 00000000a92b4000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
arch_stack_walk+0x10e/0x150 arch/x86/kernel/stacktrace.c:27
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:319 [inline]
__kasan_slab_alloc+0x66/0x80 mm/kasan/common.c:345
kasan_slab_alloc include/linux/kasan.h:250 [inline]
slab_post_alloc_hook mm/slub.c:4111 [inline]
slab_alloc_node mm/slub.c:4160 [inline]
kmem_cache_alloc_node_noprof+0x1d9/0x380 mm/slub.c:4212
__alloc_skb+0x1c3/0x440 net/core/skbuff.c:668
alloc_skb include/linux/skbuff.h:1322 [inline]
arp_create+0x12d/0x920 net/ipv4/arp.c:561
batadv_bla_send_claim+0x16f/0xe80 net/batman-adv/bridge_loop_avoidance.c:361
batadv_bla_send_announce net/batman-adv/bridge_loop_avoidance.c:675 [inline]
batadv_bla_periodic_work+0x5dc/0xaf0 net/batman-adv/bridge_loop_avoidance.c:1481
process_one_work kernel/workqueue.c:3229 [inline]
process_scheduled_works+0xa63/0x1850 kernel/workqueue.c:3310
worker_thread+0x870/0xd30 kernel/workqueue.c:3391
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