loop2: detected capacity change from 0 to 4096 BUG: unable to handle page fault for address: ffffed1103ade76f #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: 20429 Comm: syz.2.4174 Not tainted 5.15.183-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: 40 8a d4 f7 bf 01 00 00 00 e8 46 06 a8 f7 65 48 8b 1d ae 16 59 76 48 89 df be 08 00 00 00 e8 e1 dc 13 f8 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 3b db 13 f8 eb 87 48 c7 04 24 0e RSP: 0018:ffffc900043cf9e0 EFLAGS: 00010802 RAX: 1ffff11003ade770 RBX: ffff88801d6f3b80 RCX: ffffffff89a9591f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88801d6f3b80 RBP: ffffc900043cfa90 R08: dffffc0000000000 R09: ffffed1003ade771 R10: ffffed1003ade771 R11: 1ffff11003ade770 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff92000879f3c FS: 00007f5d6867e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1103ade76f CR3: 0000000067a13000 CR4: 00000000003526e0 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:preempt_count arch/x86/include/asm/preempt.h:27 [inline] RIP: 0010:check_kcov_mode kernel/kcov.c:172 [inline] RIP: 0010:__sanitizer_cov_trace_pc+0xc/0x60 kernel/kcov.c:206 Code: 89 fb e8 17 00 00 00 48 8b 3d 60 e5 f0 0b 48 89 de 5b e9 67 a9 44 00 00 00 cc cc 00 00 cc 48 8b 04 24 65 48 8b 0d 74 ae 8a 7e <65> 8b 15 75 ae 8a 7e 81 e2 00 01 ff 00 74 11 81 fa 00 01 00 00 75 RSP: 0018:ffffc900043cfb58 EFLAGS: 00000283 RAX: ffffffff829bbef5 RBX: 0000000000000090 RCX: ffff88801d6f3b80 RDX: ffffc900130d8000 RSI: 000000000000718d RDI: 000000000000718e RBP: ffffc900043cfd28 R08: ffff88801d6f3b80 R09: 0000000000000002 R10: 00000000000000e0 R11: 0000000000000002 R12: ffff88801eae8000 R13: ffffffffffffffff R14: 0000000000000080 R15: 0000000000000640 ntfs_fill_super+0x33f5/0x3c10 fs/ntfs3/super.c:1169 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:3014 do_mount fs/namespace.c:3357 [inline] __do_sys_mount fs/namespace.c:3565 [inline] __se_sys_mount+0x2d6/0x3c0 fs/namespace.c:3542 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: 0033:0x7f5d6a81810a 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:00007f5d6867de68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007f5d6867def0 RCX: 00007f5d6a81810a RDX: 00002000000001c0 RSI: 0000200000000180 RDI: 00007f5d6867deb0 RBP: 00002000000001c0 R08: 00007f5d6867def0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000180 R13: 00007f5d6867deb0 R14: 000000000001f763 R15: 0000200000000240 Modules linked in: CR2: ffffed1103ade76f ---[ end trace 2c804d4a50b8e1dc ]--- 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: 40 8a d4 f7 bf 01 00 00 00 e8 46 06 a8 f7 65 48 8b 1d ae 16 59 76 48 89 df be 08 00 00 00 e8 e1 dc 13 f8 48 89 d8 48 c1 e8 03 <42> 80 3c 30 00 74 91 48 89 df e8 3b db 13 f8 eb 87 48 c7 04 24 0e RSP: 0018:ffffc900043cf9e0 EFLAGS: 00010802 RAX: 1ffff11003ade770 RBX: ffff88801d6f3b80 RCX: ffffffff89a9591f RDX: 0000000000000000 RSI: 0000000000000008 RDI: ffff88801d6f3b80 RBP: ffffc900043cfa90 R08: dffffc0000000000 R09: ffffed1003ade771 R10: ffffed1003ade771 R11: 1ffff11003ade770 R12: 0000000000000000 R13: 0000000000000000 R14: dffffc00ffffffff R15: 1ffff92000879f3c FS: 00007f5d6867e6c0(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffed1103ade76f CR3: 0000000067a13000 CR4: 00000000003526e0 ---------------- Code disassembly (best guess): 0: 40 8a d4 mov %spl,%dl 3: f7 bf 01 00 00 00 idivl 0x1(%rdi) 9: e8 46 06 a8 f7 call 0xf7a80654 e: 65 48 8b 1d ae 16 59 mov %gs:0x765916ae(%rip),%rbx # 0x765916c4 15: 76 16: 48 89 df mov %rbx,%rdi 19: be 08 00 00 00 mov $0x8,%esi 1e: e8 e1 dc 13 f8 call 0xf813dd04 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 3b db 13 f8 call 0xf813db74 39: eb 87 jmp 0xffffffc2 3b: 48 rex.W 3c: c7 .byte 0xc7 3d: 04 24 add $0x24,%al 3f: 0e (bad)