loop3: detected capacity change from 0 to 32768 Oops: general protection fault, probably for non-canonical address 0xdffffc00000096c2: 0000 [#1] SMP KASAN PTI KASAN: probably user-memory-access in range [0x000000000004b610-0x000000000004b617] CPU: 1 UID: 0 PID: 9116 Comm: syz.3.1377 Not tainted 6.16.0-next-20250805-syzkaller #0 PREEMPT(full) Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025 RIP: 0010:__bch2_err_trace+0x2c/0x230 fs/bcachefs/bcachefs.h:1150 Code: 57 41 56 41 55 41 54 53 89 f3 49 89 fe 49 bd 00 00 00 00 00 fc ff df e8 62 96 65 fd 4d 8d be 10 b6 04 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 a5 00 c9 fd 49 8b 07 65 48 ff 80 RSP: 0018:ffffc90004677648 EFLAGS: 00010202 RAX: 00000000000096c2 RBX: 00000000fffff716 RCX: 0000000000080000 RDX: ffffc90011705000 RSI: 0000000000001d49 RDI: 0000000000001d4a RBP: ffffc90004677970 R08: 000000000000002a R09: 000000000000002a R10: 0000000000002000 R11: 0000000300000005 R12: dffffc0000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000004b610 FS: 00007fc88b9f66c0(0000) GS:ffff888125d24000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc88db71fa0 CR3: 00000000306f6000 CR4: 00000000003526f0 Call Trace: bch2_fs_open+0x130f/0x27f0 fs/bcachefs/super.c:2546 bch2_fs_get_tree+0x44f/0x1540 fs/bcachefs/fs.c:2430 vfs_get_tree+0x92/0x2b0 fs/super.c:1815 do_new_mount+0x2a2/0x9e0 fs/namespace.c:3805 do_mount fs/namespace.c:4133 [inline] __do_sys_mount fs/namespace.c:4344 [inline] __se_sys_mount+0x317/0x410 fs/namespace.c:4321 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0xfa/0x3b0 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fc88db9030a 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:00007fc88b9f5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5 RAX: ffffffffffffffda RBX: 00007fc88b9f5ef0 RCX: 00007fc88db9030a RDX: 00002000000058c0 RSI: 0000200000000000 RDI: 00007fc88b9f5eb0 RBP: 00002000000058c0 R08: 00007fc88b9f5ef0 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000000000 R13: 00007fc88b9f5eb0 R14: 0000000000005921 R15: 0000200000000380 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_err_trace+0x2c/0x230 fs/bcachefs/bcachefs.h:1150 Code: 57 41 56 41 55 41 54 53 89 f3 49 89 fe 49 bd 00 00 00 00 00 fc ff df e8 62 96 65 fd 4d 8d be 10 b6 04 00 4c 89 f8 48 c1 e8 03 <42> 80 3c 28 00 74 08 4c 89 ff e8 a5 00 c9 fd 49 8b 07 65 48 ff 80 RSP: 0018:ffffc90004677648 EFLAGS: 00010202 RAX: 00000000000096c2 RBX: 00000000fffff716 RCX: 0000000000080000 RDX: ffffc90011705000 RSI: 0000000000001d49 RDI: 0000000000001d4a RBP: ffffc90004677970 R08: 000000000000002a R09: 000000000000002a R10: 0000000000002000 R11: 0000000300000005 R12: dffffc0000000000 R13: dffffc0000000000 R14: 0000000000000000 R15: 000000000004b610 FS: 00007fc88b9f66c0(0000) GS:ffff888125d24000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007ffd00904fe8 CR3: 00000000306f6000 CR4: 00000000003526f0 ---------------- Code disassembly (best guess): 0: 57 push %rdi 1: 41 56 push %r14 3: 41 55 push %r13 5: 41 54 push %r12 7: 53 push %rbx 8: 89 f3 mov %esi,%ebx a: 49 89 fe mov %rdi,%r14 d: 49 bd 00 00 00 00 00 movabs $0xdffffc0000000000,%r13 14: fc ff df 17: e8 62 96 65 fd call 0xfd65967e 1c: 4d 8d be 10 b6 04 00 lea 0x4b610(%r14),%r15 23: 4c 89 f8 mov %r15,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 4c 89 ff mov %r15,%rdi 34: e8 a5 00 c9 fd call 0xfdc900de 39: 49 8b 07 mov (%r15),%rax 3c: 65 gs 3d: 48 rex.W 3e: ff .byte 0xff 3f: 80 .byte 0x80