[moderation/CI] Re: netfilter: ipset: convert to rhashtable

[syzbot ci]

syzbot ci has tested the following series

[v1] netfilter: ipset: convert to rhashtable
https://lore.kernel.org/all/202607141318...@strlen.de
* [PATCH RFC nf-next 01/12] netfilter: ipset: rework cidr bookkeeping
* [PATCH RFC nf-next 02/12] netfilter: ipset: rework cidr bookkeeping fixups
* [PATCH RFC nf-next 03/12] netfilter: ipset: add small wrappers for hash and bucket sizes
* [PATCH RFC nf-next 04/12] netfilter: ipset: add and use mtype_del_cidr_all helper
* [PATCH RFC nf-next 05/12] netfilter: ipset: add and use ip_set_init_comment_slow
* [PATCH RFC nf-next 06/12] netfilter: ipset: add and use ip_set_ext_destroy_slow
* [PATCH RFC nf-next 07/12] netfilter: ipset: add rhashtable boilerplate stubs
* [PATCH RFC nf-next 08/12] netfilter: ipset: replace internal hash table with rhashtable
* [PATCH RFC nf-next 09/12] netfilter: ipset: use plain rcu_read_lock
* [PATCH RFC nf-next 10/12] netfilter: ipset: use correct lockdep annotation in ipset_dereference
* [PATCH RFC nf-next 11/12] netfilter: ipset: remove last region lock usage
* [PATCH RFC nf-next 12/12] netfilter: ipset: re-add forceadd support for rhashtable

and found the following issue:
BUG: sleeping function called from invalid context in irq_work_sync

Full report is available here:
https://ci.syzbot.org/series/47a605ae-2607-4da3-aa08-70c5d3d1d824

***

BUG: sleeping function called from invalid context in irq_work_sync

tree: nf-next
URL: https://kernel.googlesource.com/pub/scm/linux/kernel/git/netfilter/nf-next.git
base: f6f3b36c15ed44de1fbb44e645e4fae8c4a4453e
arch: amd64
compiler: Debian clang version 22.1.6 (++20260514074242+fc4aad7b5db3-1~exp1~20260514074407.73), Debian LLD 22.1.6
config: https://ci.syzbot.org/builds/5beb9029-2b0f-4419-ae52-16749b7b6034/config
syz repro: https://ci.syzbot.org/findings/a6144f65-837e-4528-aaf8-77585ab7e425/syz_repro

BUG: sleeping function called from invalid context at kernel/irq_work.c:289
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5727, name: syz-executor
preempt_count: 101, expected: 0
RCU nest depth: 0, expected: 0
8 locks held by syz-executor/5727:
#0: ffff88816aad0450 (sb_writers#7){.+.+}-{0:0}, at: file_start_write include/linux/fs.h:2733 [inline]
#0: ffff88816aad0450 (sb_writers#7){.+.+}-{0:0}, at: vfs_write+0x22b/0xba0 fs/read_write.c:683
#1: ffff888115bedc80 (&of->mutex){+.+.}-{4:4}, at: kernfs_fop_write_iter+0x1d8/0x540 fs/kernfs/file.c:336
#2: ffff88810c8b85a8 (kn->active#55){.+.+}-{0:0}, at: kernfs_get_active_of fs/kernfs/file.c:73 [inline]
#2: ffff88810c8b85a8 (kn->active#55){.+.+}-{0:0}, at: kernfs_fop_write_iter+0x22b/0x540 fs/kernfs/file.c:337
#3: ffffffff8f66a000 (nsim_bus_dev_list_lock){+.+.}-{4:4}, at: new_device_store+0x13c/0x710 drivers/net/netdevsim/bus.c:184
#4: ffff88811df84128 (&dev->mutex){....}-{4:4}, at: device_lock include/linux/device.h:1102 [inline]
#4: ffff88811df84128 (&dev->mutex){....}-{4:4}, at: __device_attach+0x88/0x450 drivers/base/dd.c:1073
#5: ffff88811df94258 (&devlink->lock_key#4){+.+.}-{4:4}, at: nsim_drv_probe+0xfc/0xbf0 drivers/net/netdevsim/dev.c:1658
#6: ffff88811e194ae0 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: inode_lock_nested include/linux/fs.h:1069 [inline]
#6: ffff88811e194ae0 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: __start_dirop fs/namei.c:2918 [inline]
#6: ffff88811e194ae0 (&sb->s_type->i_mutex_key#4/1){+.+.}-{4:4}, at: start_dirop+0x4f/0x90 fs/namei.c:2942
#7: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#7: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2639 [inline]
#7: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_core+0x70d/0x10a0 kernel/rcu/tree.c:2897
Preemption disabled at:
[<ffffffff8228d9e3>] __pcs_replace_empty_main+0x383/0x6b0 mm/slub.c:4717
CPU: 0 UID: 0 PID: 5727 Comm: syz-executor Not tainted syzkaller #0 PREEMPT(full)
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<IRQ>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
__might_resched+0x378/0x4d0 kernel/sched/core.c:9197
irq_work_sync+0x9b/0x300 kernel/irq_work.c:289
rhashtable_free_and_destroy+0x39/0x540 lib/rhashtable.c:1295
hash_netport4_destroy+0x56/0xb0 net/netfilter/ipset/ip_set_hash_gen.h:420
ip_set_destroy_set_rcu+0x63/0xc0 net/netfilter/ipset/ip_set_core.c:1169
rcu_do_batch kernel/rcu/tree.c:2645 [inline]
rcu_core+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:stackdepot_memcmp lib/stackdepot.c:585 [inline]
RIP: 0010:find_stack lib/stackdepot.c:618 [inline]
RIP: 0010:stack_depot_save_flags+0x1aa/0x800 lib/stackdepot.c:676
Code: 98 c3 ff 4c 8b 54 24 10 8b 74 24 04 85 db 75 5d 4d 8b 3f 4d 39 e7 74 52 41 39 6f 10 75 f2 45 39 57 14 75 ec 31 c0 49 8b 0c c6 <49> 3b 4c c7 20 75 df 48 ff c0 41 39 c5 75 ed 83 fe 02 72 2f 49 8d
RSP: 0018:ffffc9000603ed48 EFLAGS: 00000202
RAX: 000000000000001a RBX: 0000000000000c01 RCX: ffffffff82463f22
RDX: 0000000046192dc0 RSI: 0000000000000001 RDI: 00000000b3bfa5ab
RBP: 000000008cb0243d R08: 00000000786bc44c R09: 0000000093aed82f
R10: 000000000000001e R11: ffffffff8e959c60 R12: ffff88823b4243d0
R13: 000000000000001e R14: ffffc9000603eda0 R15: ffff8881b8318e00
kasan_save_stack mm/kasan/common.c:58 [inline]
kasan_save_track+0x4f/0x80 mm/kasan/common.c:78
unpoison_slab_object mm/kasan/common.c:340 [inline]
__kasan_slab_alloc+0x6c/0x80 mm/kasan/common.c:366
kasan_slab_alloc include/linux/kasan.h:253 [inline]
slab_post_alloc_hook mm/slub.c:4612 [inline]
slab_alloc_node mm/slub.c:4945 [inline]
kmem_cache_alloc_lru_noprof+0x2aa/0x5f0 mm/slub.c:4978
__d_alloc+0x37/0x6f0 fs/dcache.c:1902
d_alloc+0x4b/0x190 fs/dcache.c:1981
lookup_one_qstr_excl+0xd8/0x360 fs/namei.c:1806
__start_dirop fs/namei.c:2920 [inline]
start_dirop+0x5c/0x90 fs/namei.c:2942
simple_start_creating+0xcc/0x110 fs/libfs.c:2305
debugfs_start_creating+0xdb/0x1a0 fs/debugfs/inode.c:394
debugfs_create_dir+0x24/0x350 fs/debugfs/inode.c:572
nsim_ethtool_init+0x28c/0x500 drivers/net/netdevsim/ethtool.c:254
nsim_create+0x26c/0x1150 drivers/net/netdevsim/netdev.c:1150
__nsim_dev_port_add+0x7f8/0xcd0 drivers/net/netdevsim/dev.c:1509
nsim_dev_port_add_all+0x37/0xf0 drivers/net/netdevsim/dev.c:1570
nsim_drv_probe+0x8ce/0xbf0 drivers/net/netdevsim/dev.c:1731
call_driver_probe drivers/base/dd.c:-1 [inline]
really_probe+0x254/0xae0 drivers/base/dd.c:706
__driver_probe_device+0x1e8/0x360 drivers/base/dd.c:868
driver_probe_device+0x4f/0x240 drivers/base/dd.c:898
__device_attach_driver+0x270/0x410 drivers/base/dd.c:1026
bus_for_each_drv+0x258/0x2f0 drivers/base/bus.c:500
__device_attach+0x2c4/0x450 drivers/base/dd.c:1098
device_initial_probe+0xa1/0xd0 drivers/base/dd.c:1153
bus_probe_device+0x12a/0x220 drivers/base/bus.c:620
device_add+0x7d7/0xb80 drivers/base/core.c:3772
nsim_bus_dev_new drivers/net/netdevsim/bus.c:471 [inline]
new_device_store+0x37b/0x710 drivers/net/netdevsim/bus.c:191
kernfs_fop_write_iter+0x3a4/0x540 fs/kernfs/file.c:345
new_sync_write fs/read_write.c:595 [inline]
vfs_write+0x612/0xba0 fs/read_write.c:687
ksys_write+0x150/0x270 fs/read_write.c:739
do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline]
do_syscall_64+0x174/0x580 arch/x86/entry/syscall_64.c:94
entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fac41b5d68e
Code: 08 0f 85 a5 a8 ff ff 49 89 fb 48 89 f0 48 89 d7 48 89 ce 4c 89 c2 4d 89 ca 4c 8b 44 24 08 4c 8b 4c 24 10 4c 89 5c 24 08 0f 05 <c3> 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 80 00 00 00 00 48 83 ec 08
RSP: 002b:00007fff6b0eac58 EFLAGS: 00000246 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 000055556430f500 RCX: 00007fac41b5d68e
RDX: 0000000000000003 RSI: 00007fff6b0eace0 RDI: 0000000000000005
RBP: 00007fac41c33716 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000003
R13: 00007fff6b0eace0 R14: 00007fac42944620 R15: 0000000000000003
</TASK>
BUG: sleeping function called from invalid context at kernel/irq_work.c:289
in_atomic(): 1, irqs_disabled(): 0, non_block: 0, pid: 5780, name: kworker/u8:4
preempt_count: 101, expected: 0
RCU nest depth: 0, expected: 0
4 locks held by kworker/u8:4/5780:
#0: ffff88811326b140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#0: ffff88811326b140 ((wq_completion)ipv6_addrconf){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
#1: ffffc90003edfc40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_one_work kernel/workqueue.c:3297 [inline]
#1: ffffc90003edfc40 ((work_completion)(&(&ifa->dad_work)->work)){+.+.}-{0:0}, at: process_scheduled_works+0xa20/0x14e0 kernel/workqueue.c:3405
#2: ffffffff8fded5c0 (rtnl_mutex){+.+.}-{4:4}, at: rtnl_net_lock include/linux/rtnetlink.h:134 [inline]
#2: ffffffff8fded5c0 (rtnl_mutex){+.+.}-{4:4}, at: addrconf_dad_work+0x116/0x15c0 net/ipv6/addrconf.c:4229
#3: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#3: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2639 [inline]
#3: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_core+0x70d/0x10a0 kernel/rcu/tree.c:2897
Preemption disabled at:
[<0000000000000000>] 0x0
CPU: 0 UID: 0 PID: 5780 Comm: kworker/u8:4 Tainted: G W syzkaller #0 PREEMPT(full)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: ipv6_addrconf addrconf_dad_work
Call Trace:
<IRQ>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
__might_resched+0x378/0x4d0 kernel/sched/core.c:9197
irq_work_sync+0x9b/0x300 kernel/irq_work.c:289
rhashtable_free_and_destroy+0x39/0x540 lib/rhashtable.c:1295
hash_netport4_destroy+0x56/0xb0 net/netfilter/ipset/ip_set_hash_gen.h:420
ip_set_destroy_set_rcu+0x63/0xc0 net/netfilter/ipset/ip_set_core.c:1169
rcu_do_batch kernel/rcu/tree.c:2645 [inline]
rcu_core+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
do_softirq+0x76/0xd0 kernel/softirq.c:523
</IRQ>
<TASK>
__local_bh_enable_ip+0xf8/0x130 kernel/softirq.c:450
spin_unlock_bh include/linux/spinlock.h:396 [inline]
addrconf_dad_work+0x2d1/0x15c0 net/ipv6/addrconf.c:4259
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>

=============================
WARNING: suspicious RCU usage
syzkaller #0 Tainted: G W
-----------------------------
kernel/sched/core.c:9159 Illegal context switch in RCU-sched read-side critical section!

other info that might help us debug this:


rcu_scheduler_active = 2, debug_locks = 1
5 locks held by syz.1.174/6158:
#0: ffff888111ca7e88 (vm_lock){++++}-{0:0}, at: lock_vma_under_rcu+0x1d1/0x500 mm/mmap_lock.c:310
#1: ffffffff8e959c60 (rcu_read_lock){....}-{1:3}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#1: ffffffff8e959c60 (rcu_read_lock){....}-{1:3}, at: rcu_read_lock include/linux/rcupdate.h:840 [inline]
#1: ffffffff8e959c60 (rcu_read_lock){....}-{1:3}, at: __pte_offset_map+0x29/0x240 mm/pgtable-generic.c:290
#2: ffff88811429feb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: spin_lock include/linux/spinlock.h:342 [inline]
#2: ffff88811429feb8 (ptlock_ptr(ptdesc)#2){+.+.}-{3:3}, at: pte_offset_map_lock+0x13d/0x210 mm/pgtable-generic.c:404
#3: ffffffff8e959d20 (rcu_read_lock_sched){....}-{1:2}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#3: ffffffff8e959d20 (rcu_read_lock_sched){....}-{1:2}, at: rcu_read_lock_sched include/linux/rcupdate.h:938 [inline]
#3: ffffffff8e959d20 (rcu_read_lock_sched){....}-{1:2}, at: pfn_valid+0xba/0x480 include/linux/mmzone.h:2270
#4: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_lock_acquire include/linux/rcupdate.h:300 [inline]
#4: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_do_batch kernel/rcu/tree.c:2639 [inline]
#4: ffffffff8e959d80 (rcu_callback){....}-{0:0}, at: rcu_core+0x70d/0x10a0 kernel/rcu/tree.c:2897

stack backtrace:
CPU: 0 UID: 0 PID: 6158 Comm: syz.1.174 Tainted: G W syzkaller #0 PREEMPT(full)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Call Trace:
<IRQ>
dump_stack_lvl+0xe8/0x150 lib/dump_stack.c:120
lockdep_rcu_suspicious+0x13f/0x1d0 kernel/locking/lockdep.c:6876
__might_resched+0xbb/0x4d0 kernel/sched/core.c:9159
irq_work_sync+0x9b/0x300 kernel/irq_work.c:289
rhashtable_free_and_destroy+0x39/0x540 lib/rhashtable.c:1295
hash_netport4_destroy+0x56/0xb0 net/netfilter/ipset/ip_set_hash_gen.h:420
ip_set_destroy_set_rcu+0x63/0xc0 net/netfilter/ipset/ip_set_core.c:1169
rcu_do_batch kernel/rcu/tree.c:2645 [inline]
rcu_core+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:valid_section include/linux/mmzone.h:2119 [inline]
RIP: 0010:pfn_valid+0x11f/0x480 include/linux/mmzone.h:2271
Code: 74 7d e8 84 ae 86 ff 4d 85 ff 75 11 e8 7a ae 86 ff eb 3d e8 73 ae 86 ff 4d 85 ff 74 ef 4d 89 fd 49 c1 ed 03 43 80 7c 25 00 00 <74> 08 4c 89 ff e8 07 3b f4 ff 49 8b 2f 48 89 ee 48 83 e6 02 31 ff
RSP: 0000:ffffc9000283f8f0 EFLAGS: 00000246
RAX: ffffffff823fb3bc RBX: ffffffff823fb37a RCX: ffff88811b629dc0
RDX: 0000000000000000 RSI: ffffffff8c2ab860 RDI: ffffffff8c2ab820
RBP: 0000000000000001 R08: ffffffff823fb37a R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8e959d20 R12: dffffc0000000000
R13: 1ffff11029fd668c R14: 000000000011c655 R15: ffff88814feb3460
page_table_check_set+0x25/0x530 mm/page_table_check.c:105
page_table_check_ptes_set include/linux/page_table_check.h:83 [inline]
set_ptes include/linux/pgtable.h:447 [inline]
set_pte_range+0x7ef/0x840 mm/memory.c:5588
finish_fault+0xe65/0x1220 mm/memory.c:5724
do_shared_fault mm/memory.c:5944 [inline]
do_fault mm/memory.c:5998 [inline]
do_pte_missing+0xf13/0x34b0 mm/memory.c:4566
handle_pte_fault mm/memory.c:6379 [inline]
__handle_mm_fault mm/memory.c:6517 [inline]
handle_mm_fault+0x1b36/0x3080 mm/memory.c:6686
do_user_addr_fault+0xa4d/0x1340 arch/x86/mm/fault.c:1343
handle_page_fault arch/x86/mm/fault.c:1483 [inline]
exc_page_fault+0x6a/0xc0 arch/x86/mm/fault.c:1536
asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:595
RIP: 0033:0x7f04b9c65711
Code: 00 48 89 ef e8 60 52 ff ff 48 8b 05 69 00 ee 00 83 05 52 00 ee 00 01 be 08 00 00 00 48 89 ef 48 8d 50 ff 48 89 15 4f 00 ee 00 <44> 88 78 ff 44 8b 3d 34 00 ee 00 e8 2f 52 ff ff 48 8b 05 40 00 ee
RSP: 002b:00007fffc2849160 EFLAGS: 00010202
RAX: 0000001b32964000 RBX: 0000000000000000 RCX: 000000000003fde8
RDX: 0000001b32963fff RSI: 0000000000000008 RDI: 00007f04bab45720
RBP: 00007f04bab45720 R08: 0000000000000000 R09: 00007f04ba016038
R10: 00007f04bab45700 R11: 0000000000000000 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000003
</TASK>
------------[ cut here ]------------
do not call blocking ops when !TASK_RUNNING; state=402 set at [<ffffffff819f28bd>] prepare_to_wait_event+0x3dd/0x480 kernel/sched/wait.c:317
WARNING: kernel/sched/core.c:9124 at __might_sleep+0x92/0xf0 kernel/sched/core.c:9120, CPU#0: kworker/u9:0/26
Modules linked in:
CPU: 0 UID: 0 PID: 26 Comm: kworker/u9:0 Tainted: G W syzkaller #0 PREEMPT(full)
Tainted: [W]=WARN
Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014
Workqueue: events_unbound toggle_allocation_gate
RIP: 0010:__might_sleep+0xac/0xf0 kernel/sched/core.c:9120
Code: 00 00 48 89 3c 24 41 89 f5 4c 8d 35 1e c1 9f 0e 43 80 3c 3c 00 74 08 48 89 df e8 6f 7f 9e 00 48 8b 0b 4c 89 f7 89 ee 48 89 ca <67> 48 0f b9 3a 44 89 ee 48 8b 3c 24 eb b5 44 89 f1 80 e1 07 80 c1
RSP: 0000:ffffc90000007c50 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88810329f1b0 RCX: ffffffff819f28bd
RDX: ffffffff819f28bd RSI: 0000000000000402 RDI: ffffffff90353090
RBP: 0000000000000402 R08: ffffffff81acc8cd R09: 0000000000000000
R10: 0000000000000000 R11: ffffffff8a074b10 R12: 1ffff11020653e36
R13: 0000000000000121 R14: ffffffff90353090 R15: dffffc0000000000
FS: 0000000000000000(0000) GS:ffff88818dc26000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 00007f04ba016018 CR3: 000000000e746000 CR4: 00000000000006f0
Call Trace:
<IRQ>
irq_work_sync+0x9b/0x300 kernel/irq_work.c:289
rhashtable_free_and_destroy+0x39/0x540 lib/rhashtable.c:1295
hash_netport4_destroy+0x56/0xb0 net/netfilter/ipset/ip_set_hash_gen.h:420
ip_set_destroy_set_rcu+0x63/0xc0 net/netfilter/ipset/ip_set_core.c:1169
rcu_do_batch kernel/rcu/tree.c:2645 [inline]
rcu_core+0x78b/0x10a0 kernel/rcu/tree.c:2897
handle_softirqs+0x225/0x840 kernel/softirq.c:622
__do_softirq kernel/softirq.c:656 [inline]
invoke_softirq kernel/softirq.c:496 [inline]
__irq_exit_rcu+0xca/0x220 kernel/softirq.c:735
irq_exit_rcu+0x9/0x30 kernel/softirq.c:752
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1062 [inline]
sysvec_apic_timer_interrupt+0xa6/0xc0 arch/x86/kernel/apic/apic.c:1062
</IRQ>
<TASK>
asm_sysvec_apic_timer_interrupt+0x1a/0x20 arch/x86/include/asm/idtentry.h:674
RIP: 0010:__raw_spin_unlock_irqrestore include/linux/spinlock_api_smp.h:179 [inline]
RIP: 0010:_raw_spin_unlock_irqrestore+0x47/0x80 kernel/locking/spinlock.c:198
Code: f7 e8 ad 6c ea f5 f7 c3 00 02 00 00 74 05 e8 10 51 16 f6 9c 58 a9 00 02 00 00 75 27 f7 c3 00 02 00 00 74 01 fb bf 01 00 00 00 <e8> b4 82 db f5 65 8b 05 ad 52 87 07 85 c0 74 18 5b 41 5e e9 91 48
RSP: 0000:ffffc90000a179a8 EFLAGS: 00000206
RAX: 0000000000000002 RBX: 0000000000000286 RCX: 0000000080000001
RDX: 0000000000000006 RSI: ffffffff8dfdcfea RDI: 0000000000000001
RBP: 0000000000000000 R08: ffffffff903237f7 R09: 1ffffffff20646fe
R10: dffffc0000000000 R11: fffffbfff20646ff R12: ffff88810329d940
R13: 0000000000000286 R14: ffffffff8eaa07c0 R15: ffffffff8eaa0800
spin_unlock_irqrestore include/linux/spinlock.h:408 [inline]
prepare_to_wait_event+0x436/0x480 kernel/sched/wait.c:319
toggle_allocation_gate+0x147/0x290 mm/kfence/core.c:913
process_one_work kernel/workqueue.c:3322 [inline]
process_scheduled_works+0xa8e/0x14e0 kernel/workqueue.c:3405
worker_thread+0xa47/0xfb0 kernel/workqueue.c:3486
kthread+0x388/0x470 kernel/kthread.c:436
ret_from_fork+0x514/0xb70 arch/x86/kernel/process.c:158
ret_from_fork_asm+0x1a/0x30 arch/x86/entry/entry_64.S:245
</TASK>
----------------
Code disassembly (best guess):
0: 98 cwtl
1: c3 ret
2: ff 4c 8b 54 decl 0x54(%rbx,%rcx,4)
6: 24 10 and $0x10,%al
8: 8b 74 24 04 mov 0x4(%rsp),%esi
c: 85 db test %ebx,%ebx
e: 75 5d jne 0x6d
10: 4d 8b 3f mov (%r15),%r15
13: 4d 39 e7 cmp %r12,%r15
16: 74 52 je 0x6a
18: 41 39 6f 10 cmp %ebp,0x10(%r15)
1c: 75 f2 jne 0x10
1e: 45 39 57 14 cmp %r10d,0x14(%r15)
22: 75 ec jne 0x10
24: 31 c0 xor %eax,%eax
26: 49 8b 0c c6 mov (%r14,%rax,8),%rcx
* 2a: 49 3b 4c c7 20 cmp 0x20(%r15,%rax,8),%rcx <-- trapping instruction
2f: 75 df jne 0x10
31: 48 ff c0 inc %rax
34: 41 39 c5 cmp %eax,%r13d
37: 75 ed jne 0x26
39: 83 fe 02 cmp $0x2,%esi
3c: 72 2f jb 0x6d
3e: 49 rex.WB
3f: 8d .byte 0x8d


***

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