INFO: task syz.1.2438:16808 blocked for more than 143 seconds.
Tainted: G U 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0
"echo 0 > /proc/sys/kernel/hung_task_timeout_secs" disables this message.
task:syz.1.2438 state:D stack:27992 pid:16808 tgid:16806 ppid:5827 task_flags:0x400040 flags:0x00000004
Call Trace:
context_switch kernel/sched/core.c:5382 [inline]
__schedule+0x116f/0x5de0 kernel/sched/core.c:6767
__schedule_loop kernel/sched/core.c:6845 [inline]
schedule+0xe7/0x3a0 kernel/sched/core.c:6860
schedule_preempt_disabled+0x13/0x30 kernel/sched/core.c:6917
__mutex_lock_common kernel/locking/mutex.c:678 [inline]
__mutex_lock+0x6c7/0xb90 kernel/locking/mutex.c:746
nfsd_nl_threads_get_doit+0x1c6/0x7c0 fs/nfsd/nfsctl.c:1713
genl_family_rcv_msg_doit+0x206/0x2f0 net/netlink/genetlink.c:1115
genl_family_rcv_msg net/netlink/genetlink.c:1195 [inline]
genl_rcv_msg+0x55c/0x800 net/netlink/genetlink.c:1210
netlink_rcv_skb+0x16a/0x440 net/netlink/af_netlink.c:2534
genl_rcv+0x28/0x40 net/netlink/genetlink.c:1219
netlink_unicast_kernel net/netlink/af_netlink.c:1313 [inline]
netlink_unicast+0x53a/0x7f0 net/netlink/af_netlink.c:1339
netlink_sendmsg+0x8d1/0xdd0 net/netlink/af_netlink.c:1883
sock_sendmsg_nosec net/socket.c:712 [inline]
__sock_sendmsg net/socket.c:727 [inline]
____sys_sendmsg+0xa95/0xc70 net/socket.c:2566
___sys_sendmsg+0x134/0x1d0 net/socket.c:2620
__sys_sendmsg+0x16d/0x220 net/socket.c:2652
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0xcd/0x230 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f84ef98e969
RSP: 002b:00007f84f0821038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e
RAX: ffffffffffffffda RBX: 00007f84efbb6080 RCX: 00007f84ef98e969
RDX: 0000000000000004 RSI: 00002000000000c0 RDI: 0000000000000004
RBP: 00007f84efa10ab1 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f84efbb6080 R15: 00007ffc9e9d8f58
Showing all locks held in the system:
1 lock held by khungtaskd/31:
#0: ffffffff8e3bf440 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:331 [inline]
#0: ffffffff8e3bf440 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:841 [inline]
#0: ffffffff8e3bf440 (rcu_read_lock){....}-{1:3}, at: debug_show_all_locks+0x36/0x1c0 kernel/locking/lockdep.c:6764
1 lock held by klogd/5189:
#0: ffff8880b8539f18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:605
3 locks held by kworker/u8:9/8987:
#0: ffff88801c2f6148 ((wq_completion)netns){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
#1: ffffc9000b5b7d18 (net_cleanup_work){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
#2: ffffffff8e3ca840 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x6e0 kernel/rcu/tree.c:3774
2 locks held by syz-executor/15872:
#0: ffff8880798880e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880798880e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880798880e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super fs/super.c:505 [inline]
#0: ffff8880798880e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super+0xd6/0x100 fs/super.c:502
#1: ffffffff8e7cc128 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:596
3 locks held by kworker/0:0/15958:
#0: ffff88801b480d48 ((wq_completion)events){+.+.}-{0:0}, at: process_one_work+0x12a2/0x1b70 kernel/workqueue.c:3213
#1: ffffc9001864fd18 ((fqdir_free_work).work){+.+.}-{0:0}, at: process_one_work+0x929/0x1b70 kernel/workqueue.c:3214
#2: ffffffff8e3ca840 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x6e0 kernel/rcu/tree.c:3774
2 locks held by getty/16252:
#0: ffff888035c6a0a0 (&tty->ldisc_sem){++++}-{0:0}, at: tty_ldisc_ref_wait+0x24/0x80 drivers/tty/tty_ldisc.c:243
#1: ffffc90003d1d2f0 (&ldata->atomic_read_lock){+.+.}-{4:4}, at: n_tty_read+0x41b/0x14f0 drivers/tty/n_tty.c:2222
2 locks held by syz-executor/16266:
#0: ffff88807a8020e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88807a8020e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88807a8020e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super fs/super.c:505 [inline]
#0: ffff88807a8020e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super+0xd6/0x100 fs/super.c:502
#1: ffffffff8e7cc128 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:596
2 locks held by syz-executor/16497:
#0: ffff8880617920e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff8880617920e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff8880617920e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super fs/super.c:505 [inline]
#0: ffff8880617920e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super+0xd6/0x100 fs/super.c:502
#1: ffffffff8e7cc128 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:596
2 locks held by syz.1.2438/16807:
#0: ffffffff901c7e90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e7cc128 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_listener_set_doit+0xdd/0x1a40 fs/nfsd/nfsctl.c:1923
2 locks held by syz.1.2438/16808:
#0: ffffffff901c7e90 (cb_lock){++++}-{4:4}, at: genl_rcv+0x19/0x40 net/netlink/genetlink.c:1218
#1: ffffffff8e7cc128 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_nl_threads_get_doit+0x1c6/0x7c0 fs/nfsd/nfsctl.c:1713
2 locks held by syz-executor/17016:
#0: ffff88806b8d60e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock fs/super.c:56 [inline]
#0: ffff88806b8d60e0 (&type->s_umount_key#52){++++}-{4:4}, at: __super_lock_excl fs/super.c:71 [inline]
#0: ffff88806b8d60e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super fs/super.c:505 [inline]
#0: ffff88806b8d60e0 (&type->s_umount_key#52){++++}-{4:4}, at: deactivate_super+0xd6/0x100 fs/super.c:502
#1: ffffffff8e7cc128 (nfsd_mutex){+.+.}-{4:4}, at: nfsd_shutdown_threads+0x5b/0xf0 fs/nfsd/nfssvc.c:596
3 locks held by syz.5.2853/18828:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88807ac1a9f8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88807ac1a9f8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18829:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88802fcd3d90 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88802fcd3d90 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18830:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88802fcd02c8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88802fcd02c8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
2 locks held by syz.5.2853/18832:
3 locks held by syz.5.2853/18835:
3 locks held by syz.5.2853/18836:
3 locks held by syz.5.2853/18838:
3 locks held by syz.5.2853/18839:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88805f342370 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88805f342370 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18840:
3 locks held by syz.5.2853/18841:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff8880585829f8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880585829f8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18843:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff888058586b48 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff888058586b48 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffff8880b8439f18 (&rq->__lock){-.-.}-{2:2}, at: raw_spin_rq_lock_nested+0x29/0x130 kernel/sched/core.c:605
3 locks held by syz.5.2853/18845:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff888058585128 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff888058585128 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18846:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88807ac1b080 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88807ac1b080 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18847:
3 locks held by syz.5.2853/18848:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff8880295fa370 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880295fa370 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18849:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88804f57e4c0 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88804f57e4c0 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
2 locks held by syz.5.2853/18850:
2 locks held by syz.5.2853/18851:
3 locks held by syz.5.2853/18852:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff88805863a370 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff88805863a370 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18853:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff888034023080 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff888034023080 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18854:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff8880340229f8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff8880340229f8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
3 locks held by syz.5.2853/18855:
#0: ffff88805e6e4420 (sb_writers#5){.+.+}-{0:0}, at: get_signal+0x22e3/0x26d0 kernel/signal.c:3019
#1: ffff888034020fd8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: inode_lock include/linux/fs.h:867 [inline]
#1: ffff888034020fd8 (&sb->s_type->i_mutex_key#13){+.+.}-{4:4}, at: shmem_file_write_iter+0x86/0x140 mm/shmem.c:3454
#2: ffffffff8e5132a8 (shmem_swaplist_mutex){+.+.}-{4:4}, at: shmem_writepage+0x5a3/0x1650 mm/shmem.c:1638
2 locks held by syz.5.2853/18856:
2 locks held by syz.8.2862/18891:
#0: ffffffff9010ff50 (pernet_ops_rwsem){++++}-{4:4}, at: copy_net_ns+0x286/0x5f0 net/core/net_namespace.c:514
#1: ffffffff8e3ca840 (rcu_state.barrier_mutex){+.+.}-{4:4}, at: rcu_barrier+0x48/0x6e0 kernel/rcu/tree.c:3774
=============================================
NMI backtrace for cpu 1
CPU: 1 UID: 0 PID: 31 Comm: khungtaskd Tainted: G U 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full)
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
Call Trace:
__dump_stack lib/dump_stack.c:94 [inline]
dump_stack_lvl+0x116/0x1f0 lib/dump_stack.c:120
nmi_cpu_backtrace+0x27b/0x390 lib/nmi_backtrace.c:113
nmi_trigger_cpumask_backtrace+0x29c/0x300 lib/nmi_backtrace.c:62
trigger_all_cpu_backtrace include/linux/nmi.h:158 [inline]
check_hung_uninterruptible_tasks kernel/hung_task.c:274 [inline]
watchdog+0xf70/0x12c0 kernel/hung_task.c:437
kthread+0x3c2/0x780 kernel/kthread.c:464
ret_from_fork+0x45/0x80 arch/x86/kernel/process.c:153
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 18840 Comm: syz.5.2853 Tainted: G U 6.15.0-rc4-syzkaller-00147-gebd297a2affa #0 PREEMPT(full)
Tainted: [U]=USER
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025
RIP: 0010:arch_atomic_read arch/x86/include/asm/atomic.h:23 [inline]
RIP: 0010:raw_atomic_read include/linux/atomic/atomic-arch-fallback.h:457 [inline]
RIP: 0010:rcu_is_watching_curr_cpu include/linux/context_tracking.h:128 [inline]
RIP: 0010:rcu_is_watching+0x60/0xc0 kernel/rcu/tree.c:736
Code: 48 89 fa 48 c1 ea 03 80 3c 02 00 75 5c 48 03 1c ed 00 3d ce 8d 48 b8 00 00 00 00 00 fc ff df 48 89 da 48 c1 ea 03 0f b6 14 02 <48> 89 d8 83 e0 07 83 c0 03 38 d0 7c 04 84 d2 75 24 8b 03 c1 e8 02
RSP: 0018:ffffc9000f6a5b50 EFLAGS: 00000a06
RAX: dffffc0000000000 RBX: ffff8880b8432de8 RCX: ffffc9000f6a8001
RDX: 0000000000000000 RSI: ffffffff8bf46760 RDI: ffffffff8dce3d00
RBP: 0000000000000000 R08: 0000000000000001 R09: 0000000000000000
R10: 0000000000000002 R11: 0000000000012855 R12: ffffc9000f6a5c28
R13: ffffc9000f6a5bd8 R14: ffffc9000f6a6ea0 R15: ffffc9000f6a5c0c
FS: 00007f297e5b46c0(0000) GS:ffff8881249ec000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f298097fab8 CR3: 000000007987c000 CR4: 00000000003526f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
rcu_read_unlock include/linux/rcupdate.h:869 [inline]
class_rcu_destructor include/linux/rcupdate.h:1155 [inline]
unwind_next_frame+0xa92/0x20a0 arch/x86/kernel/unwind_orc.c:479
arch_stack_walk+0x94/0x100 arch/x86/kernel/stacktrace.c:25
stack_trace_save+0x8e/0xc0 kernel/stacktrace.c:122
save_stack+0x160/0x1f0 mm/page_owner.c:156
__reset_page_owner+0x84/0x1a0 mm/page_owner.c:308
reset_page_owner include/linux/page_owner.h:25 [inline]
free_pages_prepare mm/page_alloc.c:1262 [inline]
free_unref_folios+0x999/0x1630 mm/page_alloc.c:2782
shrink_folio_list+0x3255/0x40e0 mm/vmscan.c:1552
evict_folios+0x779/0x1b60 mm/vmscan.c:4698
try_to_shrink_lruvec+0x5a3/0x990 mm/vmscan.c:4859
lru_gen_shrink_lruvec mm/vmscan.c:5008 [inline]
shrink_lruvec+0x312/0x2c00 mm/vmscan.c:5753
shrink_node_memcgs mm/vmscan.c:5989 [inline]
shrink_node+0x987/0x3d20 mm/vmscan.c:6030
shrink_zones mm/vmscan.c:6274 [inline]
do_try_to_free_pages+0x362/0x1920 mm/vmscan.c:6336
try_to_free_mem_cgroup_pages+0x31b/0x790 mm/vmscan.c:6664
try_charge_memcg+0x559/0x10c0 mm/memcontrol.c:2304
try_charge mm/memcontrol.c:2446 [inline]
charge_memcg+0x8a/0x230 mm/memcontrol.c:4592
__mem_cgroup_charge+0x2b/0x1e0 mm/memcontrol.c:4609
mem_cgroup_charge include/linux/memcontrol.h:642 [inline]
shmem_alloc_and_add_folio+0x514/0xc20 mm/shmem.c:1903
shmem_get_folio_gfp+0x687/0x1530 mm/shmem.c:2533
shmem_get_folio mm/shmem.c:2639 [inline]
shmem_write_begin+0x160/0x300 mm/shmem.c:3289
generic_perform_write+0x3cd/0x930 mm/filemap.c:4103
shmem_file_write_iter+0x10e/0x140 mm/shmem.c:3464
__kernel_write_iter+0x317/0xa90 fs/read_write.c:617
dump_emit_page fs/coredump.c:885 [inline]
dump_user_range+0x418/0xb30 fs/coredump.c:959
elf_core_dump+0x288a/0x3a90 fs/binfmt_elf.c:2128
do_coredump+0x3183/0x4480 fs/coredump.c:759
get_signal+0x22e3/0x26d0 kernel/signal.c:3019
arch_do_signal_or_restart+0x8f/0x7a0 arch/x86/kernel/signal.c:337
exit_to_user_mode_loop kernel/entry/common.c:111 [inline]
exit_to_user_mode_prepare include/linux/entry-common.h:329 [inline]
irqentry_exit_to_user_mode+0x13f/0x280 kernel/entry/common.c:231
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:623
RIP: 0033:0x17
Code: Unable to access opcode bytes at 0xffffffffffffffed.
RSP: 002b:0000000000000018 EFLAGS: 00010282
RAX: 0000000000000000 RBX: 00007f29809b6240 RCX: 00007f298078e969
RDX: 0000000000000000 RSI: 0000000000000010 RDI: 0000000020003b4b
RBP: 00007f2980810ab1 R08: 0200000000000005 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 0000000000000001 R14: 00007f29809b6240 R15: 00007ffec4404d38