while marking u64s 7 type extent 536870913:24:U32_MAX len 24 ver 0: durability: 1 crc: c_size 8 size 24 offset 0 nonce 0 csum none 0:0 compress lz4 ptr: 0:34:8 gen 0, continuing Oops: general protection fault, probably for non-canonical address 0xdffffc0000000013: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: null-ptr-deref in range [0x0000000000000098-0x000000000000009f] CPU: 0 UID: 0 PID: 11444 Comm: syz.3.530 Not tainted 6.13.0-rc7-syzkaller-00209-g9528d418de4d #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 RIP: 0010:btree_path_lock_root fs/bcachefs/btree_iter.c:732 [inline] RIP: 0010:bch2_btree_path_traverse_one+0x94a/0x2940 fs/bcachefs/btree_iter.c:1183 Code: 89 44 24 60 42 80 3c 20 00 74 08 4c 89 ef e8 2d 40 e8 fd 49 8b 45 00 48 89 44 24 48 48 8d 90 98 00 00 00 48 89 d0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 48 89 94 24 80 00 00 00 0f 85 ee 10 00 00 4c RSP: 0018:ffffc900040fdd20 EFLAGS: 00010202 RAX: 0000000000000013 RBX: 0000000000000000 RCX: 0000000000080000 RDX: 0000000000000098 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900040fe010 R08: ffffffff841b0610 R09: ffffffff841ae689 R10: 0000000000000002 R11: ffff88806b685a00 R12: dffffc0000000000 R13: ffff88804e4014d8 R14: ffff888030800738 R15: 000000000000310b FS: 00007fb1c20406c0(0000) GS:ffff8880b8600000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005616a27e5008 CR3: 0000000066834000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: bch2_btree_path_traverse fs/bcachefs/btree_iter.h:247 [inline] bch2_btree_iter_peek_slot+0x84f/0x2550 fs/bcachefs/btree_iter.c:2629 __bch2_bkey_get_iter fs/bcachefs/btree_iter.h:575 [inline] bch2_bkey_get_iter fs/bcachefs/btree_iter.h:589 [inline] bch2_bucket_do_index+0x685/0x10d0 fs/bcachefs/alloc_background.c:708 bch2_trigger_alloc+0x10cd/0x41e0 fs/bcachefs/alloc_background.c:879 bch2_key_trigger fs/bcachefs/bkey_methods.h:87 [inline] bch2_key_trigger_new fs/bcachefs/bkey_methods.h:115 [inline] run_one_trans_trigger fs/bcachefs/btree_trans_commit.c:515 [inline] run_btree_triggers+0x911/0x1270 fs/bcachefs/btree_trans_commit.c:540 bch2_trans_commit_run_triggers fs/bcachefs/btree_trans_commit.c:583 [inline] __bch2_trans_commit+0x525/0x93c0 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_write_index_default fs/bcachefs/io_write.c:373 [inline] __bch2_write_index+0xed2/0x2140 fs/bcachefs/io_write.c:526 bch2_write_data_inline fs/bcachefs/io_write.c:1556 [inline] bch2_write+0x101a/0x1760 fs/bcachefs/io_write.c:1627 closure_queue include/linux/closure.h:270 [inline] closure_call include/linux/closure.h:432 [inline] bch2_writepage_do_io fs/bcachefs/fs-io-buffered.c:449 [inline] bch2_writepages+0x284/0x390 fs/bcachefs/fs-io-buffered.c:641 do_writepages+0x35f/0x880 mm/page-writeback.c:2708 filemap_fdatawrite_wbc mm/filemap.c:388 [inline] __filemap_fdatawrite_range mm/filemap.c:421 [inline] filemap_write_and_wait_range+0x283/0x3a0 mm/filemap.c:675 bchfs_truncate+0x78d/0xc90 notify_change+0xbca/0xe90 fs/attr.c:552 do_truncate+0x220/0x310 fs/open.c:65 vfs_truncate+0x2e1/0x3b0 fs/open.c:111 do_sys_truncate+0xdb/0x190 fs/open.c:134 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: 0033:0x7fb1c1185d29 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:00007fb1c2040038 EFLAGS: 00000246 ORIG_RAX: 000000000000004c RAX: ffffffffffffffda RBX: 00007fb1c1376080 RCX: 00007fb1c1185d29 RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000020000000 RBP: 00007fb1c1201b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007fb1c1376080 R15: 00007fff59a187d8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:btree_path_lock_root fs/bcachefs/btree_iter.c:732 [inline] RIP: 0010:bch2_btree_path_traverse_one+0x94a/0x2940 fs/bcachefs/btree_iter.c:1183 Code: 89 44 24 60 42 80 3c 20 00 74 08 4c 89 ef e8 2d 40 e8 fd 49 8b 45 00 48 89 44 24 48 48 8d 90 98 00 00 00 48 89 d0 48 c1 e8 03 <42> 0f b6 04 20 84 c0 48 89 94 24 80 00 00 00 0f 85 ee 10 00 00 4c RSP: 0018:ffffc900040fdd20 EFLAGS: 00010202 RAX: 0000000000000013 RBX: 0000000000000000 RCX: 0000000000080000 RDX: 0000000000000098 RSI: 0000000000000000 RDI: 0000000000000000 RBP: ffffc900040fe010 R08: ffffffff841b0610 R09: ffffffff841ae689 R10: 0000000000000002 R11: ffff88806b685a00 R12: dffffc0000000000 R13: ffff88804e4014d8 R14: ffff888030800738 R15: 000000000000310b FS: 00007fb1c20406c0(0000) GS:ffff8880b8700000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00005564c3c3c950 CR3: 0000000066834000 CR4: 00000000003526f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 89 44 24 60 mov %eax,0x60(%rsp) 4: 42 80 3c 20 00 cmpb $0x0,(%rax,%r12,1) 9: 74 08 je 0x13 b: 4c 89 ef mov %r13,%rdi e: e8 2d 40 e8 fd call 0xfde84040 13: 49 8b 45 00 mov 0x0(%r13),%rax 17: 48 89 44 24 48 mov %rax,0x48(%rsp) 1c: 48 8d 90 98 00 00 00 lea 0x98(%rax),%rdx 23: 48 89 d0 mov %rdx,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 0f b6 04 20 movzbl (%rax,%r12,1),%eax <-- trapping instruction 2f: 84 c0 test %al,%al 31: 48 89 94 24 80 00 00 mov %rdx,0x80(%rsp) 38: 00 39: 0f 85 ee 10 00 00 jne 0x112d 3f: 4c rex.WR