BUG: unable to handle page fault for address: ffffed110ec51fff #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffee067 P4D 23ffee067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 6565 Comm: syz.1.557 Not tainted 6.1.141-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 05/07/2025 RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline] RIP: 0010:need_resched include/linux/sched.h:2230 [inline] RIP: 0010:preempt_schedule_irq+0xf6/0x150 kernel/sched/core.c:6876 Code: c0 0f 6f f7 bf 01 00 00 00 e8 d6 88 3f f7 65 48 8b 1d 9e 49 ea 75 48 89 df be 08 00 00 00 e8 11 2b ba f7 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 6b 29 ba f7 eb 87 48 c7 04 24 0e RSP: 0018:ffffc90004366660 EFLAGS: 00010806 RAX: 1ffff1100ec52000 RBX: ffff888076290000 RCX: ffffffff8a1825af RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888076290000 RBP: ffffc90004366700 R08: dffffc0000000000 R09: ffffed100ec52001 R10: ffffed100ec52001 R11: 1ffff1100ec52000 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff9200086cccc FS: 00007fd4905de6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed110ec51fff CR3: 000000007c246000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: irqentry_exit+0x63/0x70 kernel/entry/common.c:439 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:696 RIP: 0010:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data kernel/kcov.c:244 [inline] RIP: 0010:__sanitizer_cov_trace_const_cmp8+0x4/0x80 kernel/kcov.c:320 Code: 77 22 89 ff 89 f6 49 ff c0 4c 89 01 48 c7 44 11 08 05 00 00 00 48 89 7c 11 10 48 89 74 11 18 48 89 44 11 20 c3 90 48 8b 04 24 <65> 48 8b 0d e4 94 81 7e 65 8b 15 e5 94 81 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc900043667c0 EFLAGS: 00000246 RAX: ffffffff81ab9b4a RBX: ffffc90004366860 RCX: 0000000000080000 RDX: ffffc9000e372000 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc90004366910 R08: dffffc0000000000 R09: fffff9400028b491 R10: fffff9400028b491 R11: 1ffffd400028b490 R12: dffffc0000000000 R13: ffffea000145a480 R14: 0000000000000000 R15: 0000000000000000 xas_not_node include/linux/xarray.h:1462 [inline] xas_next+0x4a/0x2a0 include/linux/xarray.h:1864 filemap_get_read_batch+0x590/0xa60 mm/filemap.c:2444 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: 0033:0x7fd48f78e929 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:00007fd4905de038 EFLAGS: 00000246 ORIG_RAX: 0000000000000101 RAX: ffffffffffffffda RBX: 00007fd48f9b6080 RCX: 00007fd48f78e929 RDX: 0000000000143042 RSI: 00002000000000c0 RDI: ffffffffffffff9c RBP: 00007fd48f810b39 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fd48f9b6080 R15: 00007ffe92179628 Modules linked in: CR2: ffffed110ec51fff ---[ end trace 0000000000000000 ]--- RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline] RIP: 0010:arch_test_bit arch/x86/include/asm/bitops.h:239 [inline] RIP: 0010:_test_bit include/asm-generic/bitops/instrumented-non-atomic.h:142 [inline] RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline] RIP: 0010:need_resched include/linux/sched.h:2230 [inline] RIP: 0010:preempt_schedule_irq+0xf6/0x150 kernel/sched/core.c:6876 Code: c0 0f 6f f7 bf 01 00 00 00 e8 d6 88 3f f7 65 48 8b 1d 9e 49 ea 75 48 89 df be 08 00 00 00 e8 11 2b ba f7 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 6b 29 ba f7 eb 87 48 c7 04 24 0e RSP: 0018:ffffc90004366660 EFLAGS: 00010806 RAX: 1ffff1100ec52000 RBX: ffff888076290000 RCX: ffffffff8a1825af RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888076290000 RBP: ffffc90004366700 R08: dffffc0000000000 R09: ffffed100ec52001 R10: ffffed100ec52001 R11: 1ffff1100ec52000 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff9200086cccc FS: 00007fd4905de6c0(0000) GS:ffff8880b8f00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed110ec51fff CR3: 000000007c246000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: c0 0f 6f rorb $0x6f,(%rdi) 3: f7 bf 01 00 00 00 idivl 0x1(%rdi) 9: e8 d6 88 3f f7 call 0xf73f88e4 e: 65 48 8b 1d 9e 49 ea mov %gs:0x75ea499e(%rip),%rbx # 0x75ea49b4 15: 75 16: 48 89 df mov %rbx,%rdi 19: be 08 00 00 00 mov $0x8,%esi 1e: e8 11 2b ba f7 call 0xf7ba2b34 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2f: 74 91 je 0xffffffc2 31: 48 89 df mov %rbx,%rdi 34: e8 6b 29 ba f7 call 0xf7ba29a4 39: eb 87 jmp 0xffffffc2 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: 04 24 add $0x24,%al 3f: 0e (bad)