------------[ cut here ]------------ kernel BUG at mm/memory.c:2181! invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 0 PID: 20175 Comm: syz-executor.1 Not tainted 6.2.0-syzkaller-06695-gd8ca6dbb8de7 #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/21/2023 RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2181 Code: 0f 0b e8 17 35 c2 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 c3 31 c2 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 f4 34 c2 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 e3 34 c2 ff 4d 21 ee 4c 89 RSP: 0018:ffffc90005be7910 EFLAGS: 00010212 RAX: 00000000000015eb RBX: 1ffff92000b7cf24 RCX: ffffc9000c123000 RDX: 0000000000040000 RSI: ffffffff81c2793c RDI: 0000000000000007 RBP: ffff88801d502620 R08: 0000000000000007 R09: 0000000000000020 R10: 0000000000000020 R11: 0000000000000005 R12: 0000000020000000 R13: 000000000001ee16 R14: 000000000c040471 R15: 0000000000000020 FS: 00007f09dc37f700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 000000001d73a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: drm_gem_shmem_fault+0x1e1/0x290 drivers/gpu/drm/drm_gem_shmem_helper.c:562 __do_fault+0x107/0x600 mm/memory.c:4166 do_read_fault mm/memory.c:4517 [inline] do_fault mm/memory.c:4646 [inline] handle_pte_fault mm/memory.c:4934 [inline] __handle_mm_fault+0x22f2/0x3c90 mm/memory.c:5076 handle_mm_fault+0x21e/0x910 mm/memory.c:5222 do_user_addr_fault+0x475/0x1230 arch/x86/mm/fault.c:1428 handle_page_fault arch/x86/mm/fault.c:1519 [inline] exc_page_fault+0x98/0x170 arch/x86/mm/fault.c:1575 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:__get_user_4+0x20/0x30 arch/x86/lib/getuser.S:85 Code: 01 ca c3 0f 1f 80 00 00 00 00 f3 0f 1e fa 48 ba fd ef ff ff ff 7f 00 00 48 39 d0 0f 83 cc 00 00 00 48 19 d2 48 21 d0 0f 01 cb <8b> 10 31 c0 0f 01 ca c3 0f 1f 84 00 00 00 00 00 f3 0f 1e fa 48 ba RSP: 0018:ffffc90005be7d38 EFLAGS: 00050202 RAX: 0000000020000080 RBX: 0000000000000000 RCX: ffffc9000c123000 RDX: ffffffffffffffff RSI: ffffffff87df1480 RDI: 0000000000000000 RBP: ffffc90005be7ec8 R08: 0000000000000001 R09: ffffffff8e775017 R10: fffffbfff1ceea02 R11: 0000000000000000 R12: ffff8880273c6000 R13: 1ffff92000b7cfb4 R14: 0000000040044104 R15: ffff888021cc7680 snd_pcm_common_ioctl+0x5ba/0x3140 sound/core/pcm_native.c:3319 snd_pcm_ioctl+0x82/0xb0 sound/core/pcm_native.c:3411 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:870 [inline] __se_sys_ioctl fs/ioctl.c:856 [inline] __x64_sys_ioctl+0x197/0x210 fs/ioctl.c:856 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x39/0xb0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x63/0xcd RIP: 0033:0x7f09db68c0f9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 f1 19 00 00 90 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 b8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f09dc37f168 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f09db7ac050 RCX: 00007f09db68c0f9 RDX: 0000000020000080 RSI: 0000000040044104 RDI: 0000000000000004 RBP: 00007f09db6e7ae9 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f09db8cfb1f R14: 00007f09dc37f300 R15: 0000000000022000 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:vmf_insert_pfn_prot+0x24c/0x460 mm/memory.c:2181 Code: 0f 0b e8 17 35 c2 ff 4d 89 f7 bf 20 00 00 00 41 83 e7 28 4c 89 fe e8 c3 31 c2 ff 49 83 ff 20 0f 85 a5 fe ff ff e8 f4 34 c2 ff <0f> 0b 49 be ff ff ff ff ff ff 0f 00 e8 e3 34 c2 ff 4d 21 ee 4c 89 RSP: 0018:ffffc90005be7910 EFLAGS: 00010212 RAX: 00000000000015eb RBX: 1ffff92000b7cf24 RCX: ffffc9000c123000 RDX: 0000000000040000 RSI: ffffffff81c2793c RDI: 0000000000000007 RBP: ffff88801d502620 R08: 0000000000000007 R09: 0000000000000020 R10: 0000000000000020 R11: 0000000000000005 R12: 0000000020000000 R13: 000000000001ee16 R14: 000000000c040471 R15: 0000000000000020 FS: 00007f09dc37f700(0000) GS:ffff8880b9800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020000080 CR3: 000000001d73a000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 01 ca add %ecx,%edx 2: c3 retq 3: 0f 1f 80 00 00 00 00 nopl 0x0(%rax) a: f3 0f 1e fa endbr64 e: 48 ba fd ef ff ff ff movabs $0x7fffffffeffd,%rdx 15: 7f 00 00 18: 48 39 d0 cmp %rdx,%rax 1b: 0f 83 cc 00 00 00 jae 0xed 21: 48 19 d2 sbb %rdx,%rdx 24: 48 21 d0 and %rdx,%rax 27: 0f 01 cb stac * 2a: 8b 10 mov (%rax),%edx <-- trapping instruction 2c: 31 c0 xor %eax,%eax 2e: 0f 01 ca clac 31: c3 retq 32: 0f 1f 84 00 00 00 00 nopl 0x0(%rax,%rax,1) 39: 00 3a: f3 0f 1e fa endbr64 3e: 48 rex.W 3f: ba .byte 0xba