loop2: detected capacity change from 0 to 4096 BUG: unable to handle page fault for address: ffffed110f78f76f #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 23ffef067 P4D 23ffef067 PUD 0 Oops: 0000 [#1] PREEMPT SMP KASAN CPU: 1 PID: 4270 Comm: syz.2.3 Not tainted 5.15.185-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:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline] RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline] RIP: 0010:need_resched include/linux/sched.h:2111 [inline] RIP: 0010:preempt_schedule_irq+0xf6/0x150 kernel/sched/core.c:6783 Code: e0 3a d4 f7 bf 01 00 00 00 e8 d6 b6 a7 f7 65 48 8b 1d 6e c6 58 76 48 89 df be 08 00 00 00 e8 61 92 13 f8 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 bb 90 13 f8 eb 87 48 c7 04 24 0e RSP: 0018:ffffc900032ff9e0 EFLAGS: 00010802 RAX: 1ffff1100f78f770 RBX: ffff88807bc7bb80 RCX: ffffffff89a9a95f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807bc7bb80 RBP: ffffc900032ffa90 R08: dffffc0000000000 R09: ffffed100f78f771 R10: ffffed100f78f771 R11: 1ffff1100f78f770 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff9200065ff3c FS: 00007f8f34f1e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed110f78f76f CR3: 000000002267b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: irqentry_exit+0x63/0x70 kernel/entry/common.c:432 asm_sysvec_reschedule_ipi+0x16/0x20 arch/x86/include/asm/idtentry.h:681 RIP: 0010:__sanitizer_cov_trace_switch+0x4/0xe0 kernel/kcov.c:312 Code: 77 1e 4a c7 44 02 08 07 00 00 00 4a 89 7c 02 10 4a 89 74 02 18 4a 89 44 02 20 48 ff c1 48 89 0a c3 0f 1f 44 00 00 48 8b 4e 08 <48> 83 c1 f8 48 c1 c1 3d 48 83 f9 07 0f 87 c1 00 00 00 b8 8b 00 00 RSP: 0018:ffffc900032ffb58 EFLAGS: 00000287 RAX: ffffffff829bca40 RBX: 0000000000000020 RCX: 0000000000000020 RDX: 0000000000000002 RSI: ffffffff8c465510 RDI: 0000000000000020 RBP: ffffc900032ffd28 R08: dffffc0000000000 R09: fffff940002eabb7 R10: fffff940002eabb7 R11: 1ffffd40002eabb6 R12: ffff88807792c000 R13: ffffffffffffffff R14: 0000000000000010 R15: 0000000000000140 ntfs_fill_super+0x3348/0x3c10 fs/ntfs3/super.c:1176 get_tree_bdev+0x3f1/0x610 fs/super.c:1325 vfs_get_tree+0x88/0x270 fs/super.c:1530 do_new_mount+0x24a/0xa40 fs/namespace.c:3010 do_mount fs/namespace.c:3353 [inline] __do_sys_mount fs/namespace.c:3561 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3538 do_syscall_x64 arch/x86/entry/common.c:50 [inline] do_syscall_64+0x4c/0xa0 arch/x86/entry/common.c:80 entry_SYSCALL_64_after_hwframe+0x66/0xd0 RIP: 0033:0x7f8f370b80ca Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 00 00 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 49 89 ca b8 a5 00 00 00 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:00007f8f34f1de68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f8f34f1def0 RCX: 00007f8f370b80ca RDX: 0000200000000280 RSI: 0000200000000300 RDI: 00007f8f34f1deb0 RBP: 0000200000000280 R08: 00007f8f34f1def0 R09: 0000000000210802 R10: 0000000000210802 R11: 0000000000000246 R12: 0000200000000300 R13: 00007f8f34f1deb0 R14: 000000000001f74d R15: 0000200000021bc0 Modules linked in: CR2: ffffed110f78f76f ---[ end trace f6082f9b23030496 ]--- RIP: 0010:constant_test_bit arch/x86/include/asm/bitops.h:207 [inline] RIP: 0010:test_bit include/asm-generic/bitops/instrumented-non-atomic.h:135 [inline] RIP: 0010:test_ti_thread_flag include/linux/thread_info.h:118 [inline] RIP: 0010:need_resched include/linux/sched.h:2111 [inline] RIP: 0010:preempt_schedule_irq+0xf6/0x150 kernel/sched/core.c:6783 Code: e0 3a d4 f7 bf 01 00 00 00 e8 d6 b6 a7 f7 65 48 8b 1d 6e c6 58 76 48 89 df be 08 00 00 00 e8 61 92 13 f8 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 bb 90 13 f8 eb 87 48 c7 04 24 0e RSP: 0018:ffffc900032ff9e0 EFLAGS: 00010802 RAX: 1ffff1100f78f770 RBX: ffff88807bc7bb80 RCX: ffffffff89a9a95f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88807bc7bb80 RBP: ffffc900032ffa90 R08: dffffc0000000000 R09: ffffed100f78f771 R10: ffffed100f78f771 R11: 1ffff1100f78f770 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff9200065ff3c FS: 00007f8f34f1e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed110f78f76f CR3: 000000002267b000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess), 1 bytes skipped: 0: 3a d4 cmp %ah,%dl 2: f7 bf 01 00 00 00 idivl 0x1(%rdi) 8: e8 d6 b6 a7 f7 call 0xf7a7b6e3 d: 65 48 8b 1d 6e c6 58 mov %gs:0x7658c66e(%rip),%rbx # 0x7658c683 14: 76 15: 48 89 df mov %rbx,%rdi 18: be 08 00 00 00 mov $0x8,%esi 1d: e8 61 92 13 f8 call 0xf8139283 22: 48 89 d8 mov %rbx,%rax 25: 48 c1 e8 03 shr $0x3,%rax * 29: 42 80 3c 30 00 cmpb $0x0,(%rax,%r14,1) <-- trapping instruction 2e: 74 91 je 0xffffffc1 30: 48 89 df mov %rbx,%rdi 33: e8 bb 90 13 f8 call 0xf81390f3 38: eb 87 jmp 0xffffffc1 3a: 48 rex.W 3b: c7 .byte 0xc7 3c: 04 24 add $0x24,%al 3e: 0e (bad)