loop4: detected capacity change from 0 to 4096 ntfs3: loop4: Different NTFS' sector size (2048) and media sector size (512) BUG: unable to handle page fault for address: ffffed11053b676f #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: 4511 Comm: syz.4.73 Not tainted 5.15.182-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/19/2025 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: 90 76 d4 f7 bf 01 00 00 00 e8 96 f2 a7 f7 65 48 8b 1d 2e 06 59 76 48 89 df be 08 00 00 00 e8 31 c9 13 f8 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 8b c7 13 f8 eb 87 48 c7 04 24 0e RSP: 0018:ffffc90003c3f9e0 EFLAGS: 00010802 RAX: 1ffff110053b6770 RBX: ffff888029db3b80 RCX: ffffffff89a9699f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888029db3b80 RBP: ffffc90003c3fa90 R08: dffffc0000000000 R09: ffffed10053b6771 R10: ffffed10053b6771 R11: 1ffff110053b6770 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff92000787f3c FS: 00007f5297d056c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed11053b676f CR3: 00000000242c1000 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:get_current arch/x86/include/asm/current.h:15 [inline] RIP: 0010:write_comp_data kernel/kcov.c:226 [inline] RIP: 0010:__sanitizer_cov_trace_cmp4+0x4/0x80 kernel/kcov.c:267 Code: 77 22 89 ff 89 f6 4a c7 44 02 08 02 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 90 48 8b 04 24 <65> 48 8b 0d 44 b0 8a 7e 65 8b 15 45 b0 8a 7e 81 e2 00 01 ff 00 74 RSP: 0018:ffffc90003c3fb58 EFLAGS: 00000246 RAX: ffffffff829bbaf0 RBX: 0000000000000100 RCX: dffffc0000000000 RDX: 0000000000000000 RSI: 0000000000000100 RDI: 00000000000000e0 RBP: ffffc90003c3fd28 R08: ffff888029db3b80 R09: 0000000000000002 R10: 00000000000000e0 R11: 0000000000000000 R12: ffff88807c316000 R13: 0000000000010000 R14: 00000000000000e0 R15: 0000000000000960 ntfs_fill_super+0x3330/0x3c10 fs/ntfs3/super.c:1173 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:3013 do_mount fs/namespace.c:3356 [inline] __do_sys_mount fs/namespace.c:3564 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3541 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: 0033:0x7f5298a9710a 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:00007f5297d04e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5297d04ef0 RCX: 00007f5298a9710a RDX: 000020000001f340 RSI: 0000200000000040 RDI: 00007f5297d04eb0 RBP: 000020000001f340 R08: 00007f5297d04ef0 R09: 0000000000000890 R10: 0000000000000890 R11: 0000000000000246 R12: 0000200000000040 R13: 00007f5297d04eb0 R14: 000000000001f331 R15: 0000200000000000 Modules linked in: CR2: ffffed11053b676f ---[ end trace 03025f60ac1b86aa ]--- 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: 90 76 d4 f7 bf 01 00 00 00 e8 96 f2 a7 f7 65 48 8b 1d 2e 06 59 76 48 89 df be 08 00 00 00 e8 31 c9 13 f8 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 8b c7 13 f8 eb 87 48 c7 04 24 0e RSP: 0018:ffffc90003c3f9e0 EFLAGS: 00010802 RAX: 1ffff110053b6770 RBX: ffff888029db3b80 RCX: ffffffff89a9699f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff888029db3b80 RBP: ffffc90003c3fa90 R08: dffffc0000000000 R09: ffffed10053b6771 R10: ffffed10053b6771 R11: 1ffff110053b6770 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff92000787f3c FS: 00007f5297d056c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed11053b676f CR3: 00000000242c1000 CR4: 00000000003506e0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 90 nop 1: 76 d4 jbe 0xffffffd7 3: f7 bf 01 00 00 00 idivl 0x1(%rdi) 9: e8 96 f2 a7 f7 call 0xf7a7f2a4 e: 65 48 8b 1d 2e 06 59 mov %gs:0x7659062e(%rip),%rbx # 0x76590644 15: 76 16: 48 89 df mov %rbx,%rdi 19: be 08 00 00 00 mov $0x8,%esi 1e: e8 31 c9 13 f8 call 0xf813c954 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 8b c7 13 f8 call 0xf813c7c4 39: eb 87 jmp 0xffffffc2 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: 04 24 add $0x24,%al 3f: 0e (bad)