------------[ cut here ]------------
WARNING: CPU: 1 PID: 5018 at mm/maccess.c:226 copy_from_user_nofault+0x15c/0x1c0
Modules linked in:
CPU: 1 PID: 5018 Comm: syz-executor415 Not tainted 5.15.176-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 09/13/2024
RIP: 0010:copy_from_user_nofault+0x15c/0x1c0 mm/maccess.c:226
Code: db 48 c7 c0 f2 ff ff ff 48 0f 44 c5 eb 0c e8 cb ba d5 ff 48 c7 c0 f2 ff ff ff 5b 41 5c 41 5d 41 5e 41 5f 5d c3 e8 b4 ba d5 ff <0f> 0b e9 1e ff ff ff 89 d9 80 e1 07 80 c1 03 38 c1 0f 8c ef fe ff
RSP: 0018:ffffc90000dd0650 EFLAGS: 00010046
RAX: ffffffff81aaca2c RBX: 0000000000000000 RCX: ffff88807a3b9dc0
RDX: 0000000000000100 RSI: 0000000000000000 RDI: 0000000000000000
RBP: dffffc0000000000 R08: ffffffff81aac93d R09: ffffed100f4773b9
R10: 0000000000000000 R11: dffffc0000000001 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: ffffc90000dd06c8
FS: 0000555593ed1380(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000555593ed1ca8 CR3: 0000000072dc5000 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+0xe4/0x180 kernel/trace/bpf_trace.c:277
bpf_prog_5d4acea5f6dd8de2+0x3a/0x5f0
bpf_dispatcher_nop_func include/linux/bpf.h:790 [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_run5+0x222/0x3e0 kernel/trace/bpf_trace.c:1918
trace_signal_generate+0x182/0x1f0 include/trace/events/signal.h:50
__send_signal+0xadc/0xd40 kernel/signal.c:1184
do_send_sig_info kernel/signal.c:1294 [inline]
group_send_sig_info+0x260/0x2d0 kernel/signal.c:1442
bpf_send_signal_common+0x2d8/0x420 kernel/trace/bpf_trace.c:824
____bpf_send_signal kernel/trace/bpf_trace.c:829 [inline]
bpf_send_signal+0x15/0x20 kernel/trace/bpf_trace.c:827
bpf_prog_8cc4ff36b5985b6a+0x15/0xde8
bpf_dispatcher_nop_func include/linux/bpf.h:790 [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_run3+0x1d1/0x380 kernel/trace/bpf_trace.c:1916
__bpf_trace_kmem_cache_free+0x99/0xc0 include/trace/events/kmem.h:138
trace_kmem_cache_free include/trace/events/kmem.h:138 [inline]
kmem_cache_free+0x1ce/0x1f0 mm/slub.c:3516
__bio_chain_endio block/bio.c:315 [inline]
bio_endio+0x3f/0x790 block/bio.c:1467
req_bio_endio block/blk-core.c:261 [inline]
blk_update_request+0x87c/0x1470 block/blk-core.c:1441
scsi_end_request+0x83/0x980 drivers/scsi/scsi_lib.c:544
scsi_io_completion+0x1fa/0x540 drivers/scsi/scsi_lib.c:940
blk_complete_reqs block/blk-mq.c:587 [inline]
blk_done_softirq+0xf2/0x130 block/blk-mq.c:592
handle_softirqs+0x3a7/0x930 kernel/softirq.c:558
__do_softirq kernel/softirq.c:592 [inline]
invoke_softirq kernel/softirq.c:432 [inline]
__irq_exit_rcu+0x157/0x240 kernel/softirq.c:641
irq_exit_rcu+0x5/0x20 kernel/softirq.c:653
common_interrupt+0xb3/0xd0 arch/x86/kernel/irq.c:240
asm_common_interrupt+0x22/0x40 arch/x86/include/asm/idtentry.h:667
RIP: 0010:__get_user_8+0x1b/0x30 arch/x86/lib/getuser.S:101
Code: 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 48 ba f9 ef ff ff ff 7f 00 00 48 39 d0 73 64 48 19 d2 48 21 d0 0f 01 cb 48 8b 10 <31> c0 0f 01 ca c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 00 0f
RSP: 0018:ffffc90002d7fd78 EFLAGS: 00040202
RAX: 0000555593ed1ca8 RBX: ffffc90002d7fd80 RCX: ffffc90002d7fc03
RDX: 0000000000000000 RSI: ffffffff8aab3e20 RDI: ffffffff8af9f340
RBP: ffffc90002d7feb8 R08: dffffc0000000000 R09: fffffbfff1c14d56
R10: 0000000000000000 R11: dffffc0000000001 R12: ffff88807a3bb338
R13: dffffc0000000000 R14: ffff88807a3b9dc0 R15: 1ffff920005affc0
rseq_get_rseq_cs kernel/rseq.c:131 [inline]
rseq_ip_fixup kernel/rseq.c:244 [inline]
__rseq_handle_notify_resume+0x150/0x1250 kernel/rseq.c:292
rseq_handle_notify_resume include/linux/sched.h:2204 [inline]
tracehook_notify_resume include/linux/tracehook.h:201 [inline]
exit_to_user_mode_loop+0xdc/0x130 kernel/entry/common.c:181
exit_to_user_mode_prepare+0xb1/0x140 kernel/entry/common.c:214
__syscall_exit_to_user_mode_work kernel/entry/common.c:296 [inline]
syscall_exit_to_user_mode+0x5d/0x240 kernel/entry/common.c:307
do_syscall_64+0x47/0xb0 arch/x86/entry/common.c:86
entry_SYSCALL_64_after_hwframe+0x66/0xd0
RIP: 0033:0x7fb2134f78e0
Code: ff f7 d8 64 89 02 48 c7 c0 ff ff ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 66 90 80 3d c1 d7 07 00 00 74 17 b8 03 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 48 c3 0f 1f 80 00 00 00 00 48 83 ec 18 89 7c
RSP: 002b:00007ffec2aa4a38 EFLAGS: 00000202 ORIG_RAX: 0000000000000003
RAX: 0000000000000000 RBX: 0000000000000004 RCX: 00007fb2134f78e0
RDX: 0000000000000010 RSI: 00000000200000c0 RDI: 0000000000000003
RBP: 0000000000000000 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000202 R12: 0000000000000000
R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000
----------------
Code disassembly (best guess):
0: 01 ca add %ecx,%edx
2: c3 ret
3: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
a: 00 00 00
d: 66 90 xchg %ax,%ax
f: 48 ba f9 ef ff ff ff movabs $0x7fffffffeff9,%rdx
16: 7f 00 00
19: 48 39 d0 cmp %rdx,%rax
1c: 73 64 jae 0x82
1e: 48 19 d2 sbb %rdx,%rdx
21: 48 21 d0 and %rdx,%rax
24: 0f 01 cb stac
27: 48 8b 10 mov (%rax),%rdx
* 2a: 31 c0 xor %eax,%eax <-- trapping instruction
2c: 0f 01 ca clac
2f: c3 ret
30: 66 2e 0f 1f 84 00 00 cs nopw 0x0(%rax,%rax,1)
37: 00 00 00
3a: 0f 1f 44 00 00 nopl 0x0(%rax,%rax,1)
3f: 0f .byte 0xf