RBP: 00007fa7fe181090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007fa7fd535f80 R15: 00007ffef5bb8838 Oops: general protection fault, probably for non-canonical address 0xdffffc001fffffff: 0000 [#1] PREEMPT SMP KASAN NOPTI KASAN: probably user-memory-access in range [0x00000000fffffff8-0x00000000ffffffff] CPU: 0 UID: 0 PID: 5845 Comm: syz.0.18 Not tainted 6.13.0-rc2-syzkaller-00159-gf932fb9b4074 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:__bch2_fsck_err+0x30f/0x1570 fs/bcachefs/error.c:270 Code: 4c 8d 7b 0c 4d 89 fc 49 c1 ec 03 43 8a 04 2c 84 c0 0f 85 c9 10 00 00 8b 9c 24 0c 01 00 00 ff cb 4c 01 f3 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 c8 10 00 00 0f b6 1b bf 3f 00 00 00 89 de RSP: 0018:ffffc90002b7d9e0 EFLAGS: 00010207 RAX: 000000001fffffff RBX: 00000000ffffffff RCX: ffff888035920000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020 RBP: ffffc90002b7dba0 R08: ffffffff8448d66d R09: 00000000ffffffff R10: dffffc0000000000 R11: fffffbfff1d49f43 R12: 1ffff9200056fb5d R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90002b7daec FS: 00007fa7fe1816c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f25ffff CR3: 000000004333e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_bucket_ref_update+0x89e/0x12d0 fs/bcachefs/buckets.c:469 __mark_pointer fs/bcachefs/buckets.c:551 [inline] bch2_trigger_pointer fs/bcachefs/buckets.c:590 [inline] __trigger_extent+0x1173/0x4fa0 fs/bcachefs/buckets.c:740 bch2_trigger_extent+0x585/0xaa0 fs/bcachefs/buckets.c:869 bch2_key_trigger fs/bcachefs/bkey_methods.h:87 [inline] bch2_key_trigger_old fs/bcachefs/bkey_methods.h:101 [inline] run_one_trans_trigger fs/bcachefs/btree_trans_commit.c:512 [inline] run_btree_triggers+0xb37/0x1270 fs/bcachefs/btree_trans_commit.c:540 bch2_trans_commit_run_triggers fs/bcachefs/btree_trans_commit.c:572 [inline] __bch2_trans_commit+0x369/0x93c0 fs/bcachefs/btree_trans_commit.c:1057 bch2_trans_commit fs/bcachefs/btree_update.h:184 [inline] bch2_extent_update+0x4c0/0xbb0 fs/bcachefs/io_write.c:325 bch2_fpunch_at+0x882/0x1020 fs/bcachefs/io_misc.c:184 __bch2_resume_logged_op_truncate+0x772/0xab0 fs/bcachefs/io_misc.c:262 bch2_truncate+0x1c8/0x2d0 fs/bcachefs/io_misc.c:297 bchfs_truncate+0x85f/0xc90 fs/bcachefs/fs-io.c:464 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x220/0x310 fs/open.c:65 handle_truncate fs/namei.c:3449 [inline] do_open fs/namei.c:3832 [inline] path_openat+0x2e1e/0x3590 fs/namei.c:3987 do_filp_open+0x27f/0x4e0 fs/namei.c:4014 do_sys_openat2+0x13e/0x1d0 fs/open.c:1402 do_sys_open fs/open.c:1417 [inline] __do_sys_creat fs/open.c:1495 [inline] __se_sys_creat fs/open.c:1489 [inline] __x64_sys_creat+0x123/0x170 fs/open.c:1489 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7fa7fd37dff9 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:00007fa7fe181038 EFLAGS: 00000246 ORIG_RAX: 0000000000000055 RAX: ffffffffffffffda RBX: 00007fa7fd535f80 RCX: 00007fa7fd37dff9 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 00000000200000c0 RBP: 00007fa7fe181090 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000002 R13: 0000000000000000 R14: 00007fa7fd535f80 R15: 00007ffef5bb8838 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:__bch2_fsck_err+0x30f/0x1570 fs/bcachefs/error.c:270 Code: 4c 8d 7b 0c 4d 89 fc 49 c1 ec 03 43 8a 04 2c 84 c0 0f 85 c9 10 00 00 8b 9c 24 0c 01 00 00 ff cb 4c 01 f3 48 89 d8 48 c1 e8 03 <42> 8a 04 28 84 c0 0f 85 c8 10 00 00 0f b6 1b bf 3f 00 00 00 89 de RSP: 0018:ffffc90002b7d9e0 EFLAGS: 00010207 RAX: 000000001fffffff RBX: 00000000ffffffff RCX: ffff888035920000 RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000000000020 RBP: ffffc90002b7dba0 R08: ffffffff8448d66d R09: 00000000ffffffff R10: dffffc0000000000 R11: fffffbfff1d49f43 R12: 1ffff9200056fb5d R13: dffffc0000000000 R14: 0000000000000000 R15: ffffc90002b7daec FS: 00007fa7fe1816c0(0000) GS:ffff88801fc00000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b2f25ffff CR3: 000000004333e000 CR4: 0000000000352ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 4c 8d 7b 0c lea 0xc(%rbx),%r15 4: 4d 89 fc mov %r15,%r12 7: 49 c1 ec 03 shr $0x3,%r12 b: 43 8a 04 2c mov (%r12,%r13,1),%al f: 84 c0 test %al,%al 11: 0f 85 c9 10 00 00 jne 0x10e0 17: 8b 9c 24 0c 01 00 00 mov 0x10c(%rsp),%ebx 1e: ff cb dec %ebx 20: 4c 01 f3 add %r14,%rbx 23: 48 89 d8 mov %rbx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 8a 04 28 mov (%rax,%r13,1),%al <-- trapping instruction 2e: 84 c0 test %al,%al 30: 0f 85 c8 10 00 00 jne 0x10fe 36: 0f b6 1b movzbl (%rbx),%ebx 39: bf 3f 00 00 00 mov $0x3f,%edi 3e: 89 de mov %ebx,%esi