loop3: detected capacity change from 0 to 32768 BUG: kernel NULL pointer dereference, address: 0000000000000011 #PF: supervisor read access in kernel mode #PF: error_code(0x0000) - not-present page PGD 6ae95067 P4D 6ae95067 PUD 1e997067 PMD 0 Oops: Oops: 0000 [#1] PREEMPT SMP KASAN NOPTI CPU: 0 PID: 10957 Comm: syz-executor.3 Not tainted 6.9.0-syzkaller-07726-g3c999d1ae3c7 #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:___slab_alloc+0x273/0x1810 mm/slub.c:3535 Code: 0b 49 83 7f 28 00 0f 85 5f 07 00 00 4d 89 77 28 49 83 7c 24 10 00 0f 85 c6 05 00 00 4d 8b 7c 24 18 4d 85 ff 0f 84 53 06 00 00 <49> 8b 47 10 83 bd 68 ff ff ff ff 49 89 44 24 18 74 20 49 8b 07 48 RSP: 0018:ffffc90003107200 EFLAGS: 00010002 RAX: 0000000000000000 RBX: 0000000000000202 RCX: ffffffff816bc16e RDX: 0000000000000001 RSI: ffffffff81e13f31 RDI: 0000000000000000 RBP: ffffc900031072e0 R08: 0000000000000000 R09: fffffbfff283c650 R10: ffffffff941e3287 R11: 0000000000000000 R12: ffffe8ffad021ba0 R13: ffff88806752d400 R14: ffff88801fc62440 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000f5f16b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000000011 CR3: 000000005b8a4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __slab_alloc.constprop.0+0x56/0xb0 mm/slub.c:3682 __slab_alloc_node mm/slub.c:3735 [inline] slab_alloc_node mm/slub.c:3908 [inline] kmem_cache_alloc+0x2f3/0x330 mm/slub.c:3925 mempool_init_node+0x31e/0x760 mm/mempool.c:217 mempool_init+0x3a/0x50 mm/mempool.c:246 mempool_init_slab_pool include/linux/mempool.h:68 [inline] bioset_init+0x324/0x7a0 block/bio.c:1785 bch2_fs_fsio_init+0x25/0x50 fs/bcachefs/fs-io.c:1074 bch2_fs_alloc+0x1b9a/0x25c0 fs/bcachefs/super.c:936 bch2_fs_open+0x713/0x10f0 fs/bcachefs/super.c:2084 bch2_mount+0xd41/0x1090 fs/bcachefs/fs.c:1906 legacy_get_tree+0x109/0x220 fs/fs_context.c:662 vfs_get_tree+0x8f/0x380 fs/super.c:1779 do_new_mount fs/namespace.c:3352 [inline] path_mount+0x6e1/0x1f10 fs/namespace.c:3679 do_mount fs/namespace.c:3692 [inline] __do_sys_mount fs/namespace.c:3898 [inline] __se_sys_mount fs/namespace.c:3875 [inline] __ia32_sys_mount+0x295/0x320 fs/namespace.c:3875 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x75/0x120 arch/x86/entry/common.c:386 do_fast_syscall_32+0x32/0x80 arch/x86/entry/common.c:411 entry_SYSENTER_compat_after_hwframe+0x84/0x8e RIP: 0023:0xf7324579 Code: b8 01 10 06 03 74 b4 01 10 07 03 74 b0 01 10 08 03 74 d8 01 00 00 00 00 00 00 00 00 00 00 00 00 00 51 52 55 89 e5 0f 34 cd 80 <5d> 5a 59 c3 90 90 90 90 8d b4 26 00 00 00 00 8d b4 26 00 00 00 00 RSP: 002b:00000000f5f16400 EFLAGS: 00000292 ORIG_RAX: 0000000000000015 RAX: ffffffffffffffda RBX: 00000000f5f16460 RCX: 0000000020011a40 RDX: 0000000020011a00 RSI: 0000000001200014 RDI: 00000000f5f164a0 RBP: 00000000f5f16460 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000296 R12: 0000000000000000 R13: 0000000000000000 R14: 0000000000000000 R15: 0000000000000000 Modules linked in: CR2: 0000000000000011 ---[ end trace 0000000000000000 ]--- RIP: 0010:___slab_alloc+0x273/0x1810 mm/slub.c:3535 Code: 0b 49 83 7f 28 00 0f 85 5f 07 00 00 4d 89 77 28 49 83 7c 24 10 00 0f 85 c6 05 00 00 4d 8b 7c 24 18 4d 85 ff 0f 84 53 06 00 00 <49> 8b 47 10 83 bd 68 ff ff ff ff 49 89 44 24 18 74 20 49 8b 07 48 RSP: 0018:ffffc90003107200 EFLAGS: 00010002 RAX: 0000000000000000 RBX: 0000000000000202 RCX: ffffffff816bc16e RDX: 0000000000000001 RSI: ffffffff81e13f31 RDI: 0000000000000000 RBP: ffffc900031072e0 R08: 0000000000000000 R09: fffffbfff283c650 R10: ffffffff941e3287 R11: 0000000000000000 R12: ffffe8ffad021ba0 R13: ffff88806752d400 R14: ffff88801fc62440 R15: 0000000000000001 FS: 0000000000000000(0000) GS:ffff88802c000000(0063) knlGS:00000000f5f16b40 CS: 0010 DS: 002b ES: 002b CR0: 0000000080050033 CR2: 0000000000000011 CR3: 000000005b8a4000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 0b 49 83 or -0x7d(%rcx),%ecx 3: 7f 28 jg 0x2d 5: 00 0f add %cl,(%rdi) 7: 85 5f 07 test %ebx,0x7(%rdi) a: 00 00 add %al,(%rax) c: 4d 89 77 28 mov %r14,0x28(%r15) 10: 49 83 7c 24 10 00 cmpq $0x0,0x10(%r12) 16: 0f 85 c6 05 00 00 jne 0x5e2 1c: 4d 8b 7c 24 18 mov 0x18(%r12),%r15 21: 4d 85 ff test %r15,%r15 24: 0f 84 53 06 00 00 je 0x67d * 2a: 49 8b 47 10 mov 0x10(%r15),%rax <-- trapping instruction 2e: 83 bd 68 ff ff ff ff cmpl $0xffffffff,-0x98(%rbp) 35: 49 89 44 24 18 mov %rax,0x18(%r12) 3a: 74 20 je 0x5c 3c: 49 8b 07 mov (%r15),%rax 3f: 48 rex.W