Kernel panic - not syncing: stack-protector: Kernel stack is corrupted in: __schedule+0x143d/0x40d0 kernel/sched/core.c:-1 CPU: 1 PID: 4471 Comm: syz-executor391 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 Call Trace: dump_stack_lvl+0x168/0x22e lib/dump_stack.c:106 panic+0x2c9/0x710 kernel/panic.c:339 __stack_chk_fail+0x10/0x10 kernel/panic.c:767 __schedule+0x143d/0x40d0 kernel/sched/core.c:-1 preempt_schedule_irq+0xb1/0x150 kernel/sched/core.c:6873 irqentry_exit+0x63/0x70 kernel/entry/common.c:439 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696 RIP: 0010:page_ref_add_unless include/linux/page_ref.h:238 [inline] RIP: 0010:folio_ref_add_unless include/linux/page_ref.h:247 [inline] RIP: 0010:folio_ref_try_add_rcu include/linux/page_ref.h:280 [inline] RIP: 0010:folio_try_get_rcu include/linux/page_ref.h:313 [inline] RIP: 0010:filemap_get_read_batch+0x233/0xa60 mm/filemap.c:2451 Code: f3 0f 87 da 06 00 00 4c 89 ee 48 83 e6 02 0f 94 c3 31 ff e8 bf 30 d4 ff 49 81 fd fe 00 00 00 0f 93 c0 08 d8 0f 84 be 06 00 00 <49> 8d 5d 34 48 89 df be 04 00 00 00 e8 1c a7 25 00 48 89 d8 48 c1 RSP: 0018:ffffc90003fc6800 EFLAGS: 00000202 RAX: ffffffff81aca901 RBX: 0000000000000001 RCX: ffff888079abbb80 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90003fc6910 R08: ffff888079abbb80 R09: 0000000000000002 R10: 0000000000000406 R11: 0000000000000000 R12: ffffc90003fc6860 R13: ffffea0001b9d840 R14: 0000000000000000 R15: dffffc0000000000 filemap_get_pages mm/filemap.c:2667 [inline] filemap_read+0x61a/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: 0033:0x7fcd62489009 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 81 1d 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007fcd61c19168 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fcd6252a6f8 RCX: 00007fcd62489009 RDX: 0000000000143042 RSI: 00002000000000c0 RDI: 00000000ffffff9c RBP: 00007fcd6252a6f0 R08: 00007fcd61c196c0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 00007fcd6252a6fc R13: 000000000000006e R14: 00007ffd4fb26b80 R15: 00007ffd4fb26c68 Kernel Offset: disabled Rebooting in 86400 seconds.. ---------------- Code disassembly (best guess): 0: f3 0f 87 da 06 00 00 repz ja 0x6e1 7: 4c 89 ee mov %r13,%rsi a: 48 83 e6 02 and $0x2,%rsi e: 0f 94 c3 sete %bl 11: 31 ff xor %edi,%edi 13: e8 bf 30 d4 ff call 0xffd430d7 18: 49 81 fd fe 00 00 00 cmp $0xfe,%r13 1f: 0f 93 c0 setae %al 22: 08 d8 or %bl,%al 24: 0f 84 be 06 00 00 je 0x6e8 * 2a: 49 8d 5d 34 lea 0x34(%r13),%rbx <-- trapping instruction 2e: 48 89 df mov %rbx,%rdi 31: be 04 00 00 00 mov $0x4,%esi 36: e8 1c a7 25 00 call 0x25a757 3b: 48 89 d8 mov %rbx,%rax 3e: 48 rex.W 3f: c1 .byte 0xc1