syzbot

INFO: task syz-executor:9113 blocked for more than 143 seconds.
      Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz-executor    state:D stack:20912 pid:9113  tgid:9113  ppid:1      flags:0x00004004
Call Trace:
 <TASK>
 context_switch kernel/sched/core.c:5369 [inline]
 __schedule+0x1850/0x4c30 kernel/sched/core.c:6756
 __schedule_loop kernel/sched/core.c:6833 [inline]
 schedule+0x14b/0x320 kernel/sched/core.c:6848
 schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6905
 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+0x719/0x1d70 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+0xb85/0xf40 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+0xc6/0x130 fs/super.c:473
 cleanup_mnt+0x41f/0x4b0 fs/namespace.c:1373
 task_work_run+0x251/0x310 kernel/task_work.c:239
 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:329 [inline]
 __syscall_exit_to_user_mode_work kernel/entry/common.c:207 [inline]
 syscall_exit_to_user_mode+0x13f/0x340 kernel/entry/common.c:218
 do_syscall_64+0x100/0x230 arch/x86/entry/common.c:89
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f631eb87047
RSP: 002b:00007fff2edde238 EFLAGS: 00000246 ORIG_RAX: 00000000000000a6
RAX: 0000000000000000 RBX: 0000000000000000 RCX: 00007f631eb87047
RDX: 0000000000000000 RSI: 0000000000000009 RDI: 00007fff2edde2f0
RBP: 00007fff2edde2f0 R08: 0000000000000000 R09: 0000000000000000
R10: 00000000ffffffff R11: 0000000000000246 R12: 00007fff2eddf370
R13: 00007f631ec0180c R14: 00007fff2eddf3b0 R15: 000000000000003b
 </TASK>
INFO: lockdep is turned off.
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
Call Trace:
 <TASK>
 __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:234 [inline]
 watchdog+0xff6/0x1040 kernel/hung_task.c:397
 kthread+0x2f2/0x390 kernel/kthread.c:389
 ret_from_fork+0x4d/0x80 arch/x86/kernel/process.c:147
 ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:244
 </TASK>
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 5179 Comm: syslogd Not tainted 6.13.0-rc2-syzkaller-00362-g2d8308bf5b67 #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024
RIP: 0010:kasan_check_range+0xc/0x290 mm/kasan/generic.c:188
Code: e3 ff 90 0f 0b 66 0f 1f 84 00 00 00 00 00 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f 00 55 41 57 41 56 41 54 53 <b0> 01 48 85 f6 0f 84 a0 01 00 00 4c 8d 04 37 49 39 f8 0f 82 56 02
RSP: 0018:ffffc90000007680 EFLAGS: 00000246
RAX: ffffc90000007e20 RBX: 0000000000000010 RCX: ffffffff814ba57b
RDX: 0000000000000001 RSI: 0000000000000010 RDI: ffffc900000077f0
RBP: ffffc900000077f0 R08: 0000000000000001 R09: ffffc90000007890
R10: dffffc0000000000 R11: ffffffff818b2450 R12: ffffc90000008000
R13: ffffc900000077a0 R14: 0000000000000000 R15: ffffc900000077f0
FS:  00007facca80e380(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007ffecc9e0ce8 CR3: 000000007ddcc000 CR4: 0000000000350ef0
Call Trace:
 <NMI>
 </NMI>
 <IRQ>
 __asan_memset+0x23/0x50 mm/kasan/shadow.c:84
 unwind_next_frame+0xcfb/0x22d0 arch/x86/kernel/unwind_orc.c:592
 arch_stack_walk+0x11c/0x150 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
 kasan_save_free_info+0x40/0x50 mm/kasan/generic.c:582
 poison_slab_object mm/kasan/common.c:247 [inline]
 __kasan_slab_free+0x59/0x70 mm/kasan/common.c:264
 kasan_slab_free include/linux/kasan.h:233 [inline]
 slab_free_hook mm/slub.c:2353 [inline]
 slab_free mm/slub.c:4613 [inline]
 kmem_cache_free+0x195/0x410 mm/slub.c:4715
 rcu_do_batch kernel/rcu/tree.c:2567 [inline]
 rcu_core+0xaac/0x17a0 kernel/rcu/tree.c:2823
 handle_softirqs+0x2d6/0x9b0 kernel/softirq.c:561
 __do_softirq kernel/softirq.c:595 [inline]
 invoke_softirq kernel/softirq.c:435 [inline]
 __irq_exit_rcu+0xf7/0x220 kernel/softirq.c:662
 irq_exit_rcu+0x9/0x30 kernel/softirq.c:678
 instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1049 [inline]
 sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1049
 </IRQ>
 <TASK>
 asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:702
RIP: 0010:nf_conntrack_put include/linux/netfilter/nf_conntrack_common.h:36 [inline]
RIP: 0010:skb_release_head_state+0x138/0x250 net/core/skbuff.c:1180
Code: 89 d8 48 c1 e8 03 42 80 3c 20 00 74 08 48 89 df e8 cd 67 79 f8 48 8b 1b 48 89 de 48 83 e6 f8 31 ff e8 ec 03 13 f8 48 83 e3 f8 <74> 36 48 89 df be 04 00 00 00 e8 49 6a 79 f8 bd ff ff ff ff f0 0f
RSP: 0018:ffffc90004b5f930 EFLAGS: 00000246
RAX: 0000000000000000 RBX: 0000000000000000 RCX: ffff88807e30da00
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: ffffffff898c5f34 R09: 1ffff11006176aa3
R10: dffffc0000000000 R11: ffffed1006176aa4 R12: dffffc0000000000
R13: ffff888056843500 R14: ffff888056843500 R15: ffff888056843560
 skb_release_all net/core/skbuff.c:1188 [inline]
 __kfree_skb net/core/skbuff.c:1204 [inline]
 consume_skb+0x60/0xf0 net/core/skbuff.c:1436
 __unix_dgram_recvmsg+0xcea/0x12f0 net/unix/af_unix.c:2521
 sock_recvmsg_nosec net/socket.c:1033 [inline]
 sock_recvmsg+0x231/0x280 net/socket.c:1055
 sock_read_iter+0x2c4/0x3d0 net/socket.c:1125
 new_sync_read fs/read_write.c:484 [inline]
 vfs_read+0x993/0xb70 fs/read_write.c:565
 ksys_read+0x18f/0x2b0 fs/read_write.c:708
 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: 0033:0x7facca962b6a
Code: 00 3d 00 00 41 00 75 0d 50 48 8d 3d 2d 08 0a 00 e8 ea 7d 01 00 31 c0 e9 07 ff ff ff 64 8b 04 25 18 00 00 00 85 c0 75 1b 0f 05 <48> 3d 00 f0 ff ff 76 6c 48 8b 15 8f a2 0d 00 f7 d8 64 89 02 48 83
RSP: 002b:00007ffc99ca2d08 EFLAGS: 00000246 ORIG_RAX: 0000000000000000
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007facca962b6a
RDX: 00000000000000ff RSI: 0000557d1411b950 RDI: 0000000000000000
RBP: 0000557d1411b910 R08: 0000000000000001 R09: 0000000000000000
R10: 00007faccab013a3 R11: 0000000000000246 R12: 0000557d1411b99a
R13: 0000557d1411b950 R14: 0000000000000000 R15: 00007faccab45a80
 </TASK>