workqueue: Failed to create a rescuer kthread for wq "bcachefs_copygc": -EINTR
bcachefs (ba82c035-4084-4e42-af70-ef3db8356b76): shutdown complete
BUG: unable to handle page fault for address: ffffffffffffffa0
#PF: supervisor read access in kernel mode
#PF: error_code(0x0000) - not-present page
PGD 3649067 P4D 3649067 PUD 364b067 PMD 0 
Oops: 0000 [#1] PREEMPT SMP PTI
CPU: 1 PID: 20201 Comm: syz.2.1812 Not tainted 6.6.0-syzkaller #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 07/12/2025
RIP: 0010:bch2_fs_btree_iter_exit+0x10c/0x120 fs/bcachefs/btree_iter.c:3168
Code: 00 e8 d8 44 99 ff 48 8d bb a8 3f 00 00 e8 1c 28 af ff 48 81 c3 f0 3e 00 00 48 89 df 48 83 c4 08 5b 41 5e 41 5f e9 04 28 af ff <48> 8b 70 a0 48 c7 c7 15 a6 3c 83 e8 34 73 fb 00 0f 1f 40 00 90 90
RSP: 0018:ffffc9000549ba00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888123e00000 RCX: ffff888123e03e00
RDX: 2d25abcb75532000 RSI: ffffffff83379307 RDI: ffff888123e00000
RBP: ffffc9000549bcb0 R08: 0000000000000000 R09: 00000000000005b7
R10: 0000000000000000 R11: ffffffff81923920 R12: ffffffff82c7f4e8
R13: 00000000fffff7b7 R14: ffff888123e00068 R15: 0000000000000000
FS:  00007fc2509c66c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffa0 CR3: 000000012094a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
Call Trace:
 <TASK>
 __bch2_fs_free fs/bcachefs/super.c:497 [inline]
 bch2_fs_release+0x16c/0x310 fs/bcachefs/super.c:544
 kobject_cleanup lib/kobject.c:682 [inline]
 kobject_release lib/kobject.c:716 [inline]
 kref_put include/linux/kref.h:65 [inline]
 kobject_put+0x61/0x180 lib/kobject.c:733
 bch2_fs_alloc fs/bcachefs/super.c:890 [inline]
 bch2_fs_open+0xa97/0x1410 fs/bcachefs/super.c:1937
 bch2_mount+0x295/0x620 fs/bcachefs/fs.c:1827
 legacy_get_tree+0x2d/0x60 fs/fs_context.c:662
 vfs_get_tree+0x26/0xb0 fs/super.c:1768
 do_new_mount+0x12b/0x350 fs/namespace.c:3337
 do_mount fs/namespace.c:3677 [inline]
 __do_sys_mount fs/namespace.c:3886 [inline]
 __se_sys_mount+0x13c/0x1a0 fs/namespace.c:3863
 do_syscall_x64 arch/x86/entry/common.c:51 [inline]
 do_syscall_64+0x5c/0x110 arch/x86/entry/common.c:82
 entry_SYSCALL_64_after_hwframe+0x6f/0x77
RIP: 0033:0x7fc25135838a
Code: d8 64 89 02 48 c7 c0 ff ff ff ff eb a6 e8 de 1a 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 a8 ff ff ff f7 d8 64 89 01 48
RSP: 002b:00007fc2509c5e68 EFLAGS: 00000246 ORIG_RAX: 00000000000000a5
RAX: ffffffffffffffda RBX: 00007fc2509c5ef0 RCX: 00007fc25135838a
RDX: 0000200000004900 RSI: 0000200000004940 RDI: 00007fc2509c5eb0
RBP: 0000200000004900 R08: 00007fc2509c5ef0 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000200000004940
R13: 00007fc2509c5eb0 R14: 00000000000048e9 R15: 0000200000004980
 </TASK>
Modules linked in:
CR2: ffffffffffffffa0
---[ end trace 0000000000000000 ]---
RIP: 0010:bch2_fs_btree_iter_exit+0x10c/0x120 fs/bcachefs/btree_iter.c:3168
Code: 00 e8 d8 44 99 ff 48 8d bb a8 3f 00 00 e8 1c 28 af ff 48 81 c3 f0 3e 00 00 48 89 df 48 83 c4 08 5b 41 5e 41 5f e9 04 28 af ff <48> 8b 70 a0 48 c7 c7 15 a6 3c 83 e8 34 73 fb 00 0f 1f 40 00 90 90
RSP: 0018:ffffc9000549ba00 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff888123e00000 RCX: ffff888123e03e00
RDX: 2d25abcb75532000 RSI: ffffffff83379307 RDI: ffff888123e00000
RBP: ffffc9000549bcb0 R08: 0000000000000000 R09: 00000000000005b7
R10: 0000000000000000 R11: ffffffff81923920 R12: ffffffff82c7f4e8
R13: 00000000fffff7b7 R14: ffff888123e00068 R15: 0000000000000000
FS:  00007fc2509c66c0(0000) GS:ffff888237d00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffffffffffffa0 CR3: 000000012094a000 CR4: 00000000003506f0
DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000
DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400
----------------
Code disassembly (best guess):
   0:	00 e8                	add    %ch,%al
   2:	d8 44 99 ff          	fadds  -0x1(%rcx,%rbx,4)
   6:	48 8d bb a8 3f 00 00 	lea    0x3fa8(%rbx),%rdi
   d:	e8 1c 28 af ff       	call   0xffaf282e
  12:	48 81 c3 f0 3e 00 00 	add    $0x3ef0,%rbx
  19:	48 89 df             	mov    %rbx,%rdi
  1c:	48 83 c4 08          	add    $0x8,%rsp
  20:	5b                   	pop    %rbx
  21:	41 5e                	pop    %r14
  23:	41 5f                	pop    %r15
  25:	e9 04 28 af ff       	jmp    0xffaf282e
* 2a:	48 8b 70 a0          	mov    -0x60(%rax),%rsi <-- trapping instruction
  2e:	48 c7 c7 15 a6 3c 83 	mov    $0xffffffff833ca615,%rdi
  35:	e8 34 73 fb 00       	call   0xfb736e
  3a:	0f 1f 40 00          	nopl   0x0(%rax)
  3e:	90                   	nop
  3f:	90                   	nop