loop0: detected capacity change from 0 to 32768 XFS (loop0): Mounting V5 Filesystem a2f82aab-77f8-4286-afd4-a8f747a74bab XFS (loop0): Ending clean mount XFS (loop0): Quotacheck needed: Please wait. XFS (loop0): Quotacheck: Done. general protection fault, probably for non-canonical address 0xdffffc000a8a4829: 0000 [#1] PREEMPT SMP KASAN PTI KASAN: probably user-memory-access in range [0x0000000054524148-0x000000005452414f] CPU: 0 PID: 5999 Comm: syz-executor.0 Not tainted 6.8.0-rc4-syzkaller-00005-gc664e16bb1ba #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/25/2024 RIP: 0010:jbd2__journal_start+0x87/0x5d0 fs/jbd2/transaction.c:496 Code: 74 63 48 8b 1b 48 85 db 74 7d 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 73 1e 8d ff 48 8b 2b 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 5a 1e 8d ff 4c 39 65 00 0f 85 1e RSP: 0018:ffffc9000c7765c8 EFLAGS: 00010203 RAX: 000000000a8a4829 RBX: ffff88802a838d68 RCX: ffff88807d005940 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888079cfc000 RBP: 000000005452414e R08: 0000000000000c40 R09: 0000000000000001 R10: dffffc0000000000 R11: ffffed100f39f471 R12: ffff888079cfc000 R13: dffffc0000000000 R14: 0000000000000c40 R15: 0000000000000002 FS: 00007f21513506c0(0000) GS:ffff8880b9400000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000020020000 CR3: 000000002d206000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: __ext4_journal_start_sb+0x215/0x5b0 fs/ext4/ext4_jbd2.c:112 __ext4_journal_start fs/ext4/ext4_jbd2.h:326 [inline] ext4_dirty_inode+0x92/0x110 fs/ext4/inode.c:5939 __mark_inode_dirty+0x309/0xdb0 fs/fs-writeback.c:2452 generic_update_time fs/inode.c:1905 [inline] inode_update_time fs/inode.c:1918 [inline] __file_update_time fs/inode.c:2106 [inline] file_update_time+0x3a1/0x3e0 fs/inode.c:2136 ext4_page_mkwrite+0x207/0xdf0 fs/ext4/inode.c:6060 do_page_mkwrite+0x19b/0x480 mm/memory.c:2966 wp_page_shared mm/memory.c:3353 [inline] do_wp_page+0x20e3/0x4c90 mm/memory.c:3493 handle_pte_fault mm/memory.c:5160 [inline] __handle_mm_fault+0x26ad/0x72d0 mm/memory.c:5285 handle_mm_fault+0x27e/0x770 mm/memory.c:5450 do_user_addr_fault arch/x86/mm/fault.c:1415 [inline] handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x2ad/0x870 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0010:rep_movs_alternative+0x4a/0x70 arch/x86/lib/copy_user_64.S:71 Code: 75 f1 c3 cc cc cc cc 66 0f 1f 84 00 00 00 00 00 48 8b 06 48 89 07 48 83 c6 08 48 83 c7 08 83 e9 08 74 df 83 f9 08 73 e8 eb c9 a4 c3 cc cc cc cc 48 89 c8 48 c1 e9 03 83 e0 07 f3 48 a5 89 c1 RSP: 0018:ffffc9000c7770f8 EFLAGS: 00050202 RAX: ffffffff84970b01 RBX: 0000000020020040 RCX: 0000000000000040 RDX: 0000000000000000 RSI: ffff88802e6b65d0 RDI: 0000000020020000 RBP: 1ffff920018eef26 R08: ffff88802e6b660f R09: 1ffff11005cd6cc1 R10: dffffc0000000000 R11: ffffed1005cd6cc2 R12: 00000000000000c0 R13: dffffc0000000000 R14: 000000002001ff80 R15: ffff88802e6b6550 copy_user_generic arch/x86/include/asm/uaccess_64.h:112 [inline] raw_copy_to_user arch/x86/include/asm/uaccess_64.h:133 [inline] _copy_to_user+0x86/0xb0 lib/usercopy.c:41 copy_to_user include/linux/uaccess.h:191 [inline] xfs_bulkstat_fmt+0x4f/0x130 fs/xfs/xfs_ioctl.c:744 xfs_bulkstat_one_int+0xd93/0x12e0 fs/xfs/xfs_itable.c:161 xfs_bulkstat_iwalk+0x72/0xc0 fs/xfs/xfs_itable.c:239 xfs_iwalk_ag_recs+0x4d0/0x840 fs/xfs/xfs_iwalk.c:220 xfs_iwalk_run_callbacks+0x25b/0x490 fs/xfs/xfs_iwalk.c:376 xfs_iwalk_ag+0xada/0xbd0 fs/xfs/xfs_iwalk.c:482 xfs_iwalk+0x360/0x6f0 fs/xfs/xfs_iwalk.c:584 xfs_bulkstat+0x4fc/0x6c0 fs/xfs/xfs_itable.c:308 xfs_ioc_bulkstat+0x3d8/0x460 fs/xfs/xfs_ioctl.c:867 xfs_file_ioctl+0x6a5/0x1980 fs/xfs/xfs_ioctl.c:1994 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:871 [inline] __se_sys_ioctl+0xfc/0x170 fs/ioctl.c:857 do_syscall_64+0xf9/0x240 entry_SYSCALL_64_after_hwframe+0x6f/0x77 RIP: 0033:0x7f215067dda9 Code: 28 00 00 00 75 05 48 83 c4 28 c3 e8 e1 20 00 00 90 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 b0 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f21513500c8 EFLAGS: 00000246 ORIG_RAX: 0000000000000010 RAX: ffffffffffffffda RBX: 00007f21507abf80 RCX: 00007f215067dda9 RDX: 000000002001fc40 RSI: 000000008040587f RDI: 0000000000000005 RBP: 00007f21506ca47a R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 000000000000000b R14: 00007f21507abf80 R15: 00007ffdb6f70ad8 Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:jbd2__journal_start+0x87/0x5d0 fs/jbd2/transaction.c:496 Code: 74 63 48 8b 1b 48 85 db 74 7d 48 89 d8 48 c1 e8 03 42 80 3c 28 00 74 08 48 89 df e8 73 1e 8d ff 48 8b 2b 48 89 e8 48 c1 e8 03 <42> 80 3c 28 00 74 08 48 89 ef e8 5a 1e 8d ff 4c 39 65 00 0f 85 1e RSP: 0018:ffffc9000c7765c8 EFLAGS: 00010203 RAX: 000000000a8a4829 RBX: ffff88802a838d68 RCX: ffff88807d005940 RDX: 0000000000000000 RSI: 0000000000000002 RDI: ffff888079cfc000 RBP: 000000005452414e R08: 0000000000000c40 R09: 0000000000000001 R10: dffffc0000000000 R11: ffffed100f39f471 R12: ffff888079cfc000 R13: dffffc0000000000 R14: 0000000000000c40 R15: 0000000000000002 FS: 00007f21513506c0(0000) GS:ffff8880b9500000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 000000002034c000 CR3: 000000002d206000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 ---------------- Code disassembly (best guess): 0: 74 63 je 0x65 2: 48 8b 1b mov (%rbx),%rbx 5: 48 85 db test %rbx,%rbx 8: 74 7d je 0x87 a: 48 89 d8 mov %rbx,%rax d: 48 c1 e8 03 shr $0x3,%rax 11: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) 16: 74 08 je 0x20 18: 48 89 df mov %rbx,%rdi 1b: e8 73 1e 8d ff call 0xff8d1e93 20: 48 8b 2b mov (%rbx),%rbp 23: 48 89 e8 mov %rbp,%rax 26: 48 c1 e8 03 shr $0x3,%rax * 2a: 42 80 3c 28 00 cmpb $0x0,(%rax,%r13,1) <-- trapping instruction 2f: 74 08 je 0x39 31: 48 89 ef mov %rbp,%rdi 34: e8 5a 1e 8d ff call 0xff8d1e93 39: 4c 39 65 00 cmp %r12,0x0(%rbp) 3d: 0f .byte 0xf 3e: 85 1e test %ebx,(%rsi)