invalid opcode: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6424 Comm: syz.4.542 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:asm_sysvec_reschedule_ipi+0x15/0x20 arch/x86/include/asm/idtentry.h:696 Code: 48 89 c4 48 89 e7 e8 9a 5a ef ff e9 95 04 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 95 03 00 00 48 89 c4 48 89 e7 e8 9a 7a ef e9 75 04 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 75 03 00 00 RSP: 0018:ffffc90003f36648 EFLAGS: 00010086 RAX: 3b019b58efa09700 RBX: 0000000000000000 RCX: 3b019b58efa09700 RDX: dffffc0000000000 RSI: ffffffff8a6bffe0 RDI: ffffffff8abf1360 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff211706e R10: fffffbfff211706e R11: 1ffffffff211706d R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f5db3d986c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000001f000 CR3: 0000000077cfb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: RIP: 0010:__readahead_folio include/linux/pagemap.h:-1 [inline] RIP: 0010:readahead_folio+0x3c/0x5f0 include/linux/pagemap.h:1320 Code: bd 00 00 00 00 00 fc ff df e8 a0 c1 d1 ff 49 8d 5e 24 48 89 d8 48 c1 e8 03 48 89 44 24 08 0f b6 04 28 84 c0 0f 85 ca 02 00 00 <48> 89 1c 24 45 8b 7e 24 4d 8d 66 20 4d 89 e5 49 c1 ed 03 41 0f b6 RSP: 0018:ffffc90003f366f8 EFLAGS: 00000246 RAX: 0000000000000000 RBX: ffffc90003f36b04 RCX: 0000000000080000 RDX: ffffc9000f96e000 RSI: 0000000000001a1e RDI: 0000000000001a1f RBP: dffffc0000000000 R08: dffffc0000000000 R09: fffff94000394471 R10: fffff94000394471 R11: 1ffffd4000394470 R12: dffffc0000000000 R13: ffffffff8aa02440 R14: ffffc90003f36ae0 R15: ffffc90003f36ae0 read_pages+0x17b/0x840 mm/readahead.c:167 page_cache_ra_unbounded+0x690/0x770 mm/readahead.c:270 page_cache_sync_readahead include/linux/pagemap.h:1248 [inline] filemap_get_pages mm/filemap.c:2665 [inline] filemap_read+0x5ff/0x2f80 mm/filemap.c:2759 generic_file_read_iter+0x115/0x670 mm/filemap.c:2914 __kernel_read+0x2dc/0x6b0 fs/read_write.c:428 integrity_kernel_read+0x86/0xd0 security/integrity/iint.c:228 ima_calc_file_hash_tfm security/integrity/ima/ima_crypto.c:485 [inline] ima_calc_file_shash security/integrity/ima/ima_crypto.c:516 [inline] ima_calc_file_hash+0x96b/0x17c0 security/integrity/ima/ima_crypto.c:573 ima_collect_measurement+0x4b3/0xac0 security/integrity/ima/ima_api.c:293 process_measurement+0xfae/0x1a10 security/integrity/ima/ima_main.c:351 ima_file_check+0xc2/0x100 security/integrity/ima/ima_main.c:534 do_open fs/namei.c:3628 [inline] path_openat+0x2679/0x2e70 fs/namei.c:3783 do_filp_open+0x1c1/0x3c0 fs/namei.c:3810 do_sys_openat2+0x142/0x490 fs/open.c:1318 do_sys_open fs/open.c:1334 [inline] __do_sys_openat fs/open.c:1350 [inline] __se_sys_openat fs/open.c:1345 [inline] __x64_sys_openat+0x135/0x160 fs/open.c:1345 do_syscall_x64 arch/x86/entry/common.c:51 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:81 entry_SYSCALL_64_after_hwframe+0x68/0xd2 RIP: 0033:0x7f5db2f8e929 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 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 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f5db3d98038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007f5db31b6080 RCX: 00007f5db2f8e929 RDX: 0000000000143042 RSI: 00002000000000c0 RDI: ffffffffffffff9c RBP: 00007f5db3010b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f5db31b6080 R15: 00007fffc9acc1a8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:asm_sysvec_reschedule_ipi+0x15/0x20 arch/x86/include/asm/idtentry.h:696 Code: 48 89 c4 48 89 e7 e8 9a 5a ef ff e9 95 04 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 95 03 00 00 48 89 c4 48 89 e7 e8 9a 7a ef e9 75 04 00 00 90 90 90 90 90 0f 01 ca fc 6a ff e8 75 03 00 00 RSP: 0018:ffffc90003f36648 EFLAGS: 00010086 RAX: 3b019b58efa09700 RBX: 0000000000000000 RCX: 3b019b58efa09700 RDX: dffffc0000000000 RSI: ffffffff8a6bffe0 RDI: ffffffff8abf1360 RBP: 0000000000000000 R08: dffffc0000000000 R09: fffffbfff211706e R10: fffffbfff211706e R11: 1ffffffff211706d R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 FS: 00007f5db3d986c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000020000001f000 CR3: 0000000077cfb000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: bd 00 00 00 00 mov $0x0,%ebp 5: 00 fc add %bh,%ah 7: ff (bad) 8: df e8 fucomip %st(0),%st a: a0 c1 d1 ff 49 8d 5e movabs 0x48245e8d49ffd1c1,%al 11: 24 48 13: 89 d8 mov %ebx,%eax 15: 48 c1 e8 03 shr $0x3,%rax 19: 48 89 44 24 08 mov %rax,0x8(%rsp) 1e: 0f b6 04 28 movzbl (%rax,%rbp,1),%eax 22: 84 c0 test %al,%al 24: 0f 85 ca 02 00 00 jne 0x2f4 * 2a: 48 89 1c 24 mov %rbx,(%rsp) <-- trapping instruction 2e: 45 8b 7e 24 mov 0x24(%r14),%r15d 32: 4d 8d 66 20 lea 0x20(%r14),%r12 36: 4d 89 e5 mov %r12,%r13 39: 49 c1 ed 03 shr $0x3,%r13 3d: 41 rex.B 3e: 0f .byte 0xf 3f: b6 .byte 0xb6