INFO: task syz.5.877:15387 blocked for more than 143 seconds. Not tainted 6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #0 "echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message. task:syz.5.877 state:D stack:24912 pid:15387 tgid:15386 ppid:15282 flags:0x00000004 Call Trace: context_switch kernel/sched/core.c:5369 [inline] __schedule+0x17fb/0x4be0 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 __super_lock fs/super.c:58 [inline] super_lock+0x27c/0x400 fs/super.c:120 user_get_super+0xd2/0x180 fs/super.c:1000 quotactl_block fs/quota/quota.c:890 [inline] __do_sys_quotactl fs/quota/quota.c:955 [inline] __se_sys_quotactl+0x527/0xa30 fs/quota/quota.c:917 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: 0033:0x7fe2e7385d29 RSP: 002b:00007fe2e8121038 EFLAGS: 00000246 ORIG_RAX: 00000000000000b3 RAX: ffffffffffffffda RBX: 00007fe2e7575fa0 RCX: 00007fe2e7385d29 RDX: 0000000000000000 RSI: 0000000020000340 RDI: ffffffff80000902 RBP: 00007fe2e7401a20 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fe2e7575fa0 R15: 00007fff117f6df8 INFO: lockdep is turned off. NMI backtrace for cpu 0 CPU: 0 UID: 0 PID: 30 Comm: khungtaskd Not tainted 6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 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:234 [inline] watchdog+0xff6/0x1040 kernel/hung_task.c:397 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: 5182 Comm: klogd Not tainted 6.13.0-rc3-syzkaller-00026-g59dbb9d81adf #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 11/25/2024 RIP: 0033:0x7fe03c503272 Code: 31 e4 5a 4c 89 e0 5d 41 5c 41 5d 41 5e c3 48 85 ff 0f 84 83 00 00 00 41 54 4c 8d 67 f0 55 53 48 8b 1d 9a 7b 12 00 48 8b 47 f8 <64> 8b 2b a8 02 74 39 83 3d 48 7f 12 00 00 75 26 48 3b 05 07 7f 12 RSP: 002b:00007fff615cfbc0 EFLAGS: 00000202 RAX: 0000000000000061 RBX: ffffffffffffff80 RCX: 00007fe03c55e9b5 RDX: 0000000000000053 RSI: 0000555d8e7ce370 RDI: 0000555d8e7ce370 RBP: 0000555d8e7c5910 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000004000 R11: 0000000000000246 R12: 0000555d8e7ce360 R13: 00007fe03c6ec212 R14: 00007fff615cfcd8 R15: 0000000000000000 FS: 00007fe03c3fc380 GS: 0000000000000000