On Thu, Jul 17, 2025 at 12:13:32PM -0700, syzbot wrote: > Hello, > > syzbot found the following issue on: > > HEAD commit: e8352908bdcd Add linux-next specific files for 20250716 > git tree: linux-next > console+strace: https://syzkaller.appspot.com/x/log.txt?x=100e158c580000 > kernel config: https://syzkaller.appspot.com/x/.config?x=2594af20939db736 > dashboard link: https://syzkaller.appspot.com/bug?extid=1faf405b707c6475482f > compiler: Debian clang version 20.1.7 > (++20250616065708+6146a88f6049-1~exp1~20250616065826.132), Debian LLD 20.1.7 > syz repro: https://syzkaller.appspot.com/x/repro.syz?x=17b1e382580000 > C reproducer: https://syzkaller.appspot.com/x/repro.c?x=10e8e7d4580000 > > Downloadable assets: > disk image: > https://storage.googleapis.com/syzbot-assets/c5f2b597f40f/disk-e8352908.raw.xz > vmlinux: > https://storage.googleapis.com/syzbot-assets/0d56411fc215/vmlinux-e8352908.xz > kernel image: > https://storage.googleapis.com/syzbot-assets/7f800652df04/bzImage-e8352908.xz > mounted in repro: > https://storage.googleapis.com/syzbot-assets/24f97c1c6123/mount_0.gz > > IMPORTANT: if you fix the issue, please add the following tag to the commit: > Reported-by: syzbot+1faf405b707c64754...@syzkaller.appspotmail.com > > bi_fields_set=0 > bi_dir=0 > bi_dir_offset=0 > bi_subvol=0 > bi_parent_subvol=0 > bi_nocow=0 > bi_depth=0 > bi_inodes_32bit=0 > bi_casefold=0, fixing > bcachefs (loop0): hash table key at wrong offset: should be at > 6053843396831044271 > u64s 7 type dirent 4096:4330382808765833931:U32_MAX len 0 ver 0: ����1 -> > 536870912 type reg, fixing > ------------[ cut here ]------------ > kernel BUG at arch/x86/mm/physaddr.c:23! > Oops: invalid opcode: 0000 [#1] SMP KASAN PTI > CPU: 1 UID: 0 PID: 5848 Comm: syz-executor288 Not tainted > 6.16.0-rc6-next-20250716-syzkaller #0 PREEMPT(full) > Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS > Google 05/07/2025 > RIP: 0010:__phys_addr+0x17b/0x180 arch/x86/mm/physaddr.c:23 > Code: 50 fe fa 8d 48 89 de 4c 89 f2 e8 80 15 8b 03 e9 4d ff ff ff e8 e6 32 4b > 00 90 0f 0b e8 de 32 4b 00 90 0f 0b e8 d6 32 4b 00 90 <0f> 0b 0f 1f 00 90 90 > 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 > RSP: 0018:ffffc90003e0dfa8 EFLAGS: 00010293 > RAX: ffffffff817473fa RBX: 000000007ffffffc RCX: ffff888031bf8000 > RDX: 0000000000000000 RSI: 000000007ffffffc RDI: 000000001fffffff > RBP: 0000000000000002 R08: fffffffffffffffc R09: fffffffffffffffc > R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90003e0e530 > R13: ffffc90003e0ee00 R14: 000000007ffffffc R15: dffffc0000000000 > FS: 000055558a225380(0000) GS:ffff888125ce2000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f740dd9b000 CR3: 0000000071cd2000 CR4: 00000000003526f0 > Call Trace: > <TASK> > virt_to_folio include/linux/mm.h:1178 [inline] > kfree+0x77/0x440 mm/slub.c:4871 > bch2_printbuf_exit+0x6f/0xb0 fs/bcachefs/printbuf.c:219 > class_printbuf_destructor fs/bcachefs/printbuf.h:148 [inline] > bch2_str_hash_repair_key+0xf2b/0x4030 fs/bcachefs/str_hash.c:336 > __bch2_str_hash_check_key+0xa85/0xd60 fs/bcachefs/str_hash.c:391 > bch2_str_hash_check_key fs/bcachefs/str_hash.h:427 [inline] > check_dirent fs/bcachefs/fsck.c:2310 [inline] > bch2_check_dirents+0x21fe/0x3440 fs/bcachefs/fsck.c:2449 > bch2_run_recovery_pass fs/bcachefs/recovery_passes.c:479 [inline] > __bch2_run_recovery_passes+0x39d/0x1050 fs/bcachefs/recovery_passes.c:535 > bch2_run_recovery_passes+0x184/0x210 fs/bcachefs/recovery_passes.c:606 > bch2_fs_recovery+0x2544/0x3860 fs/bcachefs/recovery.c:995 > bch2_fs_start+0x957/0xbf0 fs/bcachefs/super.c:1216 > bch2_fs_get_tree+0xb39/0x1540 fs/bcachefs/fs.c:2456 > vfs_get_tree+0x8f/0x2b0 fs/super.c:1804 > 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: 0033:0x7fe9b6ab4e2a > Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 5e 04 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 b8 ff ff ff f7 d8 64 89 01 48 > RSP: 002b:00007ffc69216268 EFLAGS: 00000282 ORIG_RAX: 00000000000000a5 > RAX: ffffffffffffffda RBX: 00007ffc69216280 RCX: 00007fe9b6ab4e2a > RDX: 00002000000000c0 RSI: 0000200000000340 RDI: 00007ffc69216280 > RBP: 0000200000000340 R08: 00007ffc692162c0 R09: 000000000000597e > R10: 0000000001014040 R11: 0000000000000282 R12: 00002000000000c0 > R13: 00007ffc692162c0 R14: 0000000000000003 R15: 0000000001014040 > </TASK> > Modules linked in: > ---[ end trace 0000000000000000 ]--- > RIP: 0010:__phys_addr+0x17b/0x180 arch/x86/mm/physaddr.c:23 > Code: 50 fe fa 8d 48 89 de 4c 89 f2 e8 80 15 8b 03 e9 4d ff ff ff e8 e6 32 4b > 00 90 0f 0b e8 de 32 4b 00 90 0f 0b e8 d6 32 4b 00 90 <0f> 0b 0f 1f 00 90 90 > 90 90 90 90 90 90 90 90 90 90 90 90 90 90 f3 > RSP: 0018:ffffc90003e0dfa8 EFLAGS: 00010293 > RAX: ffffffff817473fa RBX: 000000007ffffffc RCX: ffff888031bf8000 > RDX: 0000000000000000 RSI: 000000007ffffffc RDI: 000000001fffffff > RBP: 0000000000000002 R08: fffffffffffffffc R09: fffffffffffffffc > R10: 0000000000000000 R11: 0000000000000000 R12: ffffc90003e0e530 > R13: ffffc90003e0ee00 R14: 000000007ffffffc R15: dffffc0000000000 > FS: 000055558a225380(0000) GS:ffff888125be2000(0000) knlGS:0000000000000000 > CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 > CR2: 00007f740e4bed30 CR3: 0000000071cd2000 CR4: 00000000003526f0 > > > --- > This report is generated by a bot. It may contain errors. > See https://goo.gl/tpsmEJ for more information about syzbot. > syzbot engineers can be reached at syzkal...@googlegroups.com. > > syzbot will keep track of this issue. See: > https://goo.gl/tpsmEJ#status for how to communicate with syzbot. > > If the report is already addressed, let syzbot know by replying with: > #syz fix: exact-commit-title > > If you want syzbot to run the reproducer, reply with: > #syz test: git://repo/address.git branch-or-commit-hash > If you attach or paste a git patch, syzbot will apply it before testing. > > If you want to overwrite report's subsystems, reply with: > #syz set subsystems: new-subsystem > (See the list of subsystem names on the web dashboard) > > If the report is a duplicate of another one, reply with: > #syz dup: exact-subject-of-another-report > > If you want to undo deduplication, reply with: > #syz undup
fixed in the updated version of the patch #syz fix: bcachefs: convert str_hash.c to CLASS
