sched: RT throttling activated
------------[ cut here ]------------
WARNING: CPU: 1 PID: 4409 at mm/maccess.c:226 copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Modules linked in:
CPU: 1 PID: 4409 Comm: syz.3.31 Not tainted syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/25/2025
RIP: 0010:copy_from_user_nofault+0x160/0x1c0 mm/maccess.c:226
Code: 24 45 31 f6 31 ff 89 de e8 0d f6 d8 ff 85 db 48 c7 c0 f2 ff ff ff 49 0f 44 c6 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 90 f2 d8 ff <0f> 0b e9 1c ff ff ff 44 89 e1 80 e1 07 80 c1 03 38 c1 0f 8c ea fe
RSP: 0018:ffffc90000dd0978 EFLAGS: 00010246
RAX: ffffffff819ed980 RBX: 0000000000000008 RCX: ffff88801dd30000
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: 0000000000000000 R08: dffffc0000000000 R09: ffffed1003ba6001
R10: ffffed1003ba6001 R11: 1ffff11003ba6000 R12: ffff88801dd31788
R13: 00007ffffffff000 R14: ffffc90000dd09e8 R15: 0000000000000000
FS: 00007fd321c2a6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000000000000000 CR3: 000000001fccc000 CR4: 00000000003506e0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
bpf_probe_read_user_common kernel/trace/bpf_trace.c:157 [inline]
____bpf_probe_read_compat kernel/trace/bpf_trace.c:281 [inline]
bpf_probe_read_compat+0xdd/0x170 kernel/trace/bpf_trace.c:277
bpf_prog_ee60aafa828f4cb7+0x35/0xcc8
bpf_dispatcher_nop_func include/linux/bpf.h:888 [inline]
__bpf_prog_run include/linux/filter.h:628 [inline]
bpf_prog_run include/linux/filter.h:635 [inline]
__bpf_trace_run kernel/trace/bpf_trace.c:1878 [inline]
bpf_trace_run2+0x15b/0x2d0 kernel/trace/bpf_trace.c:1915
__bpf_trace_kfree+0x6e/0x90 include/trace/events/kmem.h:118
trace_kfree include/trace/events/kmem.h:118 [inline]
kfree+0x25f/0x2a0 mm/slub.c:4554
ip_dst_metrics_put include/net/ip.h:516 [inline]
ip6_dst_destroy+0x96/0x240 net/ipv6/route.c:360
dst_destroy+0xc0/0x2e0 net/core/dst.c:112
rcu_do_batch kernel/rcu/tree.c:2523 [inline]
rcu_core+0x962/0x15d0 kernel/rcu/tree.c:2763
handle_softirqs+0x328/0x820 kernel/softirq.c:576
__do_softirq kernel/softirq.c:610 [inline]
invoke_softirq kernel/softirq.c:450 [inline]
__irq_exit_rcu+0x12f/0x220 kernel/softirq.c:659
irq_exit_rcu+0x5/0x20 kernel/softirq.c:671
instr_sysvec_apic_timer_interrupt arch/x86/kernel/apic/apic.c:1108 [inline]
sysvec_apic_timer_interrupt+0xa0/0xc0 arch/x86/kernel/apic/apic.c:1108
asm_sysvec_apic_timer_interrupt+0x16/0x20 arch/x86/include/asm/idtentry.h:676
RIP: 0010:check_preemption_disabled+0x6/0x110 lib/smp_processor_id.c:13
Code: dc 12 8a e8 2c 01 00 00 65 ff 0d 21 5d 61 76 5b c3 00 00 cc 48 c7 c7 a0 e7 59 8a 48 c7 c6 e0 e7 59 8a eb 00 55 41 57 41 56 53 <48> 83 ec 10 65 48 8b 04 25 28 00 00 00 48 89 44 24 08 65 8b 05 d9
RSP: 0018:ffffc9000354ef68 EFLAGS: 00000283
RAX: 0000000000000001 RBX: ffff8880612230e8 RCX: 00000000000000a8
RDX: 00000000000000a8 RSI: ffffffff8a59e7e0 RDI: ffffffff8a59e7a0
RBP: 0000000000000dc0 R08: 00000000000000e8 R09: ffff8880612230e8
R10: 00000000174336bf R11: 00000000aa99718b R12: ffff8880169e9b40
R13: ffff8880612230e8 R14: ffffffff81ea63a6 R15: ffff8880169e9b40
rcu_dynticks_curr_cpu_in_eqs kernel/rcu/tree.c:331 [inline]
rcu_is_watching+0x11/0xa0 kernel/rcu/tree.c:1123
trace_kmem_cache_alloc include/trace/events/kmem.h:54 [inline]
kmem_cache_alloc+0x133/0x290 mm/slub.c:3240
kmem_cache_zalloc include/linux/slab.h:728 [inline]
__kernfs_new_node+0xd6/0x680 fs/kernfs/dir.c:593
kernfs_new_node+0x148/0x250 fs/kernfs/dir.c:669
__kernfs_create_file+0x47/0x2e0 fs/kernfs/file.c:985
sysfs_add_file_mode_ns+0x2d4/0x3a0 fs/sysfs/file.c:317
sysfs_merge_group+0x176/0x300 fs/sysfs/group.c:343
dpm_sysfs_add+0xce/0x270 drivers/base/power/sysfs.c:707
device_add+0x715/0xfb0 drivers/base/core.c:3369
device_create_groups_vargs drivers/base/core.c:4096 [inline]
device_create+0x258/0x2e0 drivers/base/core.c:4138
vcs_make_sysfs+0x51/0x80 drivers/tty/vt/vc_screen.c:795
vc_allocate+0x613/0x730 drivers/tty/vt/vt.c:1157
con_install+0xa0/0x700 drivers/tty/vt/vt.c:3382
tty_driver_install_tty drivers/tty/tty_io.c:1317 [inline]
tty_init_dev+0xbb/0x470 drivers/tty/tty_io.c:1431
tty_open_by_driver drivers/tty/tty_io.c:2100 [inline]
tty_open+0x5b9/0xd20 drivers/tty/tty_io.c:2148
chrdev_open+0x597/0x670 fs/char_dev.c:414
do_dentry_open+0x7ff/0xf80 fs/open.c:826
do_open fs/namei.c:3616 [inline]
path_openat+0x2682/0x2f30 fs/namei.c:3750
do_filp_open+0x1b3/0x3e0 fs/namei.c:3777
do_sys_openat2+0x142/0x4a0 fs/open.c:1255
do_sys_open fs/open.c:1271 [inline]
__do_sys_openat fs/open.c:1287 [inline]
__se_sys_openat fs/open.c:1282 [inline]
__x64_sys_openat+0x135/0x160 fs/open.c:1282
do_syscall_x64 arch/x86/entry/common.c:50 [inline]
do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fd3239c1f90
Code: 48 89 44 24 20 75 93 44 89 54 24 0c e8 69 95 02 00 44 8b 54 24 0c 89 da 48 89 ee 41 89 c0 bf 9c ff ff ff b8 01 01 00 00 0f 05 <48> 3d 00 f0 ff ff 77 38 44 89 c7 89 44 24 0c e8 bc 95 02 00 8b 44
RSP: 002b:00007fd321c29b70 EFLAGS: 00000293 ORIG_RAX: 0000000000000101
RAX: ffffffffffffffda RBX: 0000000000000002 RCX: 00007fd3239c1f90
RDX: 0000000000000002 RSI: 00007fd321c29c10 RDI: 00000000ffffff9c
RBP: 00007fd321c29c10 R08: 0000000000000000 R09: 00007fd321c29986
R10: 0000000000000000 R11: 0000000000000293 R12: 0000000000000000
R13: 00007fd323c1a038 R14: 00007fd323c19fa0 R15: 00007ffdc0b49fb8
----------------
Code disassembly (best guess):
0: dc 12 fcoml (%rdx)
2: 8a e8 mov %al,%ch
4: 2c 01 sub $0x1,%al
6: 00 00 add %al,(%rax)
8: 65 ff 0d 21 5d 61 76 decl %gs:0x76615d21(%rip) # 0x76615d30
f: 5b pop %rbx
10: c3 ret
11: 00 00 add %al,(%rax)
13: cc int3
14: 48 c7 c7 a0 e7 59 8a mov $0xffffffff8a59e7a0,%rdi
1b: 48 c7 c6 e0 e7 59 8a mov $0xffffffff8a59e7e0,%rsi
22: eb 00 jmp 0x24
24: 55 push %rbp
25: 41 57 push %r15
27: 41 56 push %r14
29: 53 push %rbx
* 2a: 48 83 ec 10 sub $0x10,%rsp <-- trapping instruction
2e: 65 48 8b 04 25 28 00 mov %gs:0x28,%rax
35: 00 00
37: 48 89 44 24 08 mov %rax,0x8(%rsp)
3c: 65 gs
3d: 8b .byte 0x8b
3e: 05 .byte 0x5
3f: d9 .byte 0xd9