watchdog: BUG: soft lockup - CPU#1 stuck for 22s! [syz.1.399:8734]
Modules linked in:
irq event stamp: 168715
hardirqs last  enabled at (168714): [<ffff80008b48466c>] __exit_to_kernel_mode arch/arm64/kernel/entry-common.c:85 [inline]
hardirqs last  enabled at (168714): [<ffff80008b48466c>] exit_to_kernel_mode+0xdc/0x10c arch/arm64/kernel/entry-common.c:95
hardirqs last disabled at (168715): [<ffff80008b4820e4>] __el1_irq arch/arm64/kernel/entry-common.c:545 [inline]
hardirqs last disabled at (168715): [<ffff80008b4820e4>] el1_interrupt+0x24/0x68 arch/arm64/kernel/entry-common.c:563
softirqs last  enabled at (708): [<ffff8000800307f8>] local_bh_enable+0x10/0x34 include/linux/bottom_half.h:32
softirqs last disabled at (716): [<ffff800089573904>] spin_lock_bh include/linux/spinlock.h:356 [inline]
softirqs last disabled at (716): [<ffff800089573904>] sock_devmem_dontneed+0x1d8/0x5fc net/core/sock.c:1086
CPU: 1 UID: 0 PID: 8734 Comm: syz.1.399 Not tainted 6.12.0-rc1-syzkaller-g2d8bce6e34be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : preempt_count arch/arm64/include/asm/preempt.h:13 [inline]
pc : check_kcov_mode kernel/kcov.c:183 [inline]
pc : __sanitizer_cov_trace_pc+0x14/0x84 kernel/kcov.c:217
lr : sock_devmem_dontneed+0x3e4/0x5fc net/core/sock.c:1088
sp : ffff80009c7e77b0
x29: ffff80009c7e78e0 x28: ffff80009c7e7a30 x27: 0000000000000000
x26: ffff0000c9971600 x25: ffff0000c9971604 x24: 0000000020000000
x23: 000000007165732f x22: ffff0000c78a3b00 x21: dfff800000000000
x20: 000000000651efab x19: ffff80009c7e7820 x18: ffff80009c7e74a0
x17: 0000000000045f6f x16: ffff800080586210 x15: 0000000000000003
x14: 1ffff000138fcee4 x13: 0000000000000000 x12: 0000000000000000
x11: 0000000000040000 x10: 000000000003ffff x9 : 0000000000000201
x8 : ffff0000f271bc80 x7 : 0000000000000000 x6 : 0000000000000000
x5 : 0000000000000000 x4 : 0000000000000000 x3 : 0000000000000010
x2 : 0000000000000008 x1 : 0000000000000000 x0 : 0000000000000000
Call trace:
 preempt_count arch/arm64/include/asm/preempt.h:13 [inline]
 check_kcov_mode kernel/kcov.c:183 [inline]
 __sanitizer_cov_trace_pc+0x14/0x84 kernel/kcov.c:217
 sk_setsockopt+0x74c/0x30d8 net/core/sock.c:1280
 sock_setsockopt+0x68/0x80 net/core/sock.c:1633
 do_sock_setsockopt+0x238/0x4e0 net/socket.c:2325
 __sys_setsockopt+0x128/0x1a8 net/socket.c:2352
 __do_sys_setsockopt net/socket.c:2361 [inline]
 __se_sys_setsockopt net/socket.c:2358 [inline]
 __arm64_sys_setsockopt+0xb8/0xd4 net/socket.c:2358
 __invoke_syscall arch/arm64/kernel/syscall.c:35 [inline]
 invoke_syscall+0x98/0x2b8 arch/arm64/kernel/syscall.c:49
 el0_svc_common+0x130/0x23c arch/arm64/kernel/syscall.c:132
 do_el0_svc+0x48/0x58 arch/arm64/kernel/syscall.c:151
 el0_svc+0x54/0x168 arch/arm64/kernel/entry-common.c:732
 el0t_64_sync_handler+0x84/0x108 arch/arm64/kernel/entry-common.c:750
 el0t_64_sync+0x190/0x194 arch/arm64/kernel/entry.S:598
Sending NMI from CPU 1 to CPUs 0:
NMI backtrace for cpu 0
CPU: 0 UID: 0 PID: 6799 Comm: kworker/u8:10 Not tainted 6.12.0-rc1-syzkaller-g2d8bce6e34be #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 08/06/2024
Workqueue: events_unbound toggle_allocation_gate
pstate: 80400005 (Nzcv daif +PAN -UAO -TCO -DIT -SSBS BTYPE=--)
pc : csd_lock_wait kernel/smp.c:340 [inline]
pc : smp_call_function_many_cond+0x1a9c/0x3418 kernel/smp.c:884
lr : csd_lock_wait kernel/smp.c:340 [inline]
lr : smp_call_function_many_cond+0x1ab4/0x3418 kernel/smp.c:884
sp : ffff8000a3e77790
x29: ffff8000a3e778d0 x28: ffffffffffffffff x27: 1fffe000366ca551
x26: ffff0001b367b668 x25: 0000000000000001 x24: dfff800000000000
x23: 0000000000000008 x22: 0000000000000011 x21: 1fffe000366ca550
x20: ffff0001b3652a88 x19: ffff0001b3652a80 x18: ffff0000d7f627b0
x17: 0000000000420042 x16: ffff8000830b4c50 x15: 0000000000000001
x14: 1fffe000366cf6cd x13: 0000000000000000 x12: 0000000000000000
x11: ffff6000366cf6ce x10: 0000000000ff0100 x9 : 0000000000000000
x8 : 0000000000000011 x7 : ffff800080066d14 x6 : 0000000000000000
x5 : 0000000000000001 x4 : 0000000000000000 x3 : ffff8000804d70bc
x2 : 0000000000000000 x1 : 0000000000000004 x0 : 0000000000000001
Call trace:
 __cmpwait_case_32 arch/arm64/include/asm/cmpxchg.h:231 [inline]
 __cmpwait arch/arm64/include/asm/cmpxchg.h:257 [inline]
 csd_lock_wait kernel/smp.c:340 [inline]
 smp_call_function_many_cond+0x1a9c/0x3418 kernel/smp.c:884
 smp_call_function_many kernel/smp.c:908 [inline]
 smp_call_function kernel/smp.c:930 [inline]
 kick_all_cpus_sync+0x40/0xa0 kernel/smp.c:1075
 arch_jump_label_transform_apply+0x14/0x20 arch/arm64/kernel/jump_label.c:34
 __jump_label_update+0x30c/0x334 kernel/jump_label.c:521
 jump_label_update+0x30c/0x3bc kernel/jump_label.c:920
 static_key_enable_cpuslocked+0x140/0x230 kernel/jump_label.c:210
 static_key_enable+0x24/0x38 kernel/jump_label.c:223
 toggle_allocation_gate+0xc4/0x264 mm/kfence/core.c:849
 process_one_work+0x7bc/0x1600 kernel/workqueue.c:3229
 process_scheduled_works kernel/workqueue.c:3310 [inline]
 worker_thread+0x97c/0xeec kernel/workqueue.c:3391
 kthread+0x288/0x310 kernel/kthread.c:389
 ret_from_fork+0x10/0x20 arch/arm64/kernel/entry.S:860