bcachefs (loop0): check_inodes... done bcachefs (loop0): check_extents... done bcachefs (loop0): check_indirect_extents... done bcachefs (loop0): check_dirents... done bcachefs (loop0): check_xattrs... done bcachefs (loop0): check_root... done bcachefs (loop0): check_unreachable_inodes... done bcachefs (loop0): check_subvolume_structure... done bcachefs (loop0): check_directory_structure... done bcachefs (loop0): check_nlinks... bcachefs (loop0): inode 536870914 type reg has wrong i_nlink (2780562353, should be 1), fixing done bcachefs (loop0): check_rebalance_work... done bcachefs (loop0): resume_logged_ops... done bcachefs (loop0): delete_dead_inodes... done bcachefs (loop0): set_fs_needs_rebalance... done bcachefs (loop0): Fixed errors, running fsck a second time to verify fs is clean bcachefs (loop0): check_alloc_info... done bcachefs (loop0): check_lrus... done bcachefs (loop0): check_btree_backpointers... done bcachefs (loop0): check_backpointers_to_extents... done bcachefs (loop0): check_extents_to_backpointers... done bcachefs (loop0): check_alloc_to_lru_refs... done bcachefs (loop0): bucket_gens_init... done bcachefs (loop0): check_snapshot_trees... done bcachefs (loop0): check_snapshots... done bcachefs (loop0): check_subvols... done bcachefs (loop0): check_subvol_children... done bcachefs (loop0): delete_dead_snapshots... done bcachefs (loop0): check_inodes... done bcachefs (loop0): check_extents... done bcachefs (loop0): check_indirect_extents... done bcachefs (loop0): check_dirents... done bcachefs (loop0): check_xattrs... done bcachefs (loop0): check_root... done bcachefs (loop0): check_unreachable_inodes... done bcachefs (loop0): check_subvolume_structure... done bcachefs (loop0): check_directory_structure... done bcachefs (loop0): check_nlinks... done bcachefs (loop0): check_rebalance_work... done bcachefs (loop0): resume_logged_ops... done bcachefs (loop0): delete_dead_inodes... done bcachefs (loop0): set_fs_needs_rebalance... done bcachefs (loop0): going read-only bcachefs (loop0): finished waiting for writes to stop bcachefs (loop0): flushing journal and stopping allocators, journal seq 24 bcachefs (loop0): flushing journal and stopping allocators complete, journal seq 24 bcachefs (loop0): clean shutdown complete, journal seq 25 bcachefs (loop0): marking filesystem clean bcachefs (loop0): done starting filesystem BUG: kernel NULL pointer dereference, address: 0000000000000000 #PF: supervisor instruction fetch in kernel mode #PF: error_code(0x0010) - not-present page PGD 0 P4D 0 Oops: Oops: 0010 [#1] SMP KASAN NOPTI CPU: 0 UID: 0 PID: 5362 Comm: syz.0.0 Not tainted 6.16.0-syzkaller-11129-geacf91b0c78a #0 PREEMPT(full) Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.3-debian-1.16.3-2~bpo12+1 04/01/2014 RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc9000d407998 EFLAGS: 00010287 RAX: ffffffff81f8cb44 RBX: 1ffffd4000268960 RCX: 0000000000100000 RDX: ffffc9000e6e2000 RSI: ffffea0001344b00 RDI: ffff888011756700 RBP: ffffc9000d407a50 R08: ffffea0001344b07 R09: 1ffffd4000268960 R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea0001344b08 R14: ffffea0001344b00 R15: 1ffffd4000268961 FS: 00007f0ef53456c0(0000) GS:ffff88808d21f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000043668000 CR4: 0000000000352ef0 Call Trace: filemap_read_folio+0x117/0x380 mm/filemap.c:2413 do_read_cache_folio+0x350/0x590 mm/filemap.c:3957 freader_get_folio+0x3c4/0x830 lib/buildid.c:77 freader_fetch+0xa3/0x5d0 lib/buildid.c:120 __build_id_parse+0x133/0x7d0 lib/buildid.c:305 do_procmap_query fs/proc/task_mmu.c:662 [inline] procfs_procmap_ioctl+0x7f0/0xce0 fs/proc/task_mmu.c:741 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:598 [inline] __se_sys_ioctl+0xf9/0x170 fs/ioctl.c:584 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: 0033:0x7f0ef458eb69 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:00007f0ef5345038 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f0ef47b5fa0 RCX: 00007f0ef458eb69 RDX: 0000200000000180 RSI: 00000000c0686611 RDI: 000000000000000a RBP: 00007f0ef4611df1 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f0ef47b5fa0 R15: 00007ffe38cdb948 Modules linked in: CR2: 0000000000000000 ---[ end trace 0000000000000000 ]--- RIP: 0010:0x0 Code: Unable to access opcode bytes at 0xffffffffffffffd6. RSP: 0018:ffffc9000d407998 EFLAGS: 00010287 RAX: ffffffff81f8cb44 RBX: 1ffffd4000268960 RCX: 0000000000100000 RDX: ffffc9000e6e2000 RSI: ffffea0001344b00 RDI: ffff888011756700 RBP: ffffc9000d407a50 R08: ffffea0001344b07 R09: 1ffffd4000268960 R10: dffffc0000000000 R11: 0000000000000000 R12: 0000000000000000 R13: ffffea0001344b08 R14: ffffea0001344b00 R15: 1ffffd4000268961 FS: 00007f0ef53456c0(0000) GS:ffff88808d21f000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: ffffffffffffffd6 CR3: 0000000043668000 CR4: 0000000000352ef0