Hello, syzbot found the following issue on: HEAD commit: 861c0981648f Merge tag 'jfs-6.8-rc3' of github.com:kleikam.. git tree: upstream console output: https://syzkaller.appspot.com/x/log.txt?x=174537bbe80000 kernel config: https://syzkaller.appspot.com/x/.config?x=b168fa511db3ca08 dashboard link: https://syzkaller.appspot.com/bug?extid=17a611d10af7d18a7092 compiler: gcc (Debian 12.2.0-14) 12.2.0, GNU ld (GNU Binutils for Debian) 2.40 userspace arch: i386 Unfortunately, I don't have any reproducer for this issue yet. Downloadable assets: disk image (non-bootable): https://storage.googleapis.com/syzbot-assets/7bc7510fe41f/non_bootable_disk-861c0981.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b2b204c7b4a0/vmlinux-861c0981.xz kernel image: https://storage.googleapis.com/syzbot-assets/170ec316e557/bzImage-861c0981.xz IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+17a611d10af7d18a7092@xxxxxxxxxxxxxxxxxxxxxxxxx kcov_ioctl+0x4f/0x720 kernel/kcov.c:704 __do_compat_sys_ioctl+0x2bf/0x330 fs/ioctl.c:971 do_syscall_32_irqs_on arch/x86/entry/common.c:165 [inline] __do_fast_syscall_32+0x79/0x110 arch/x86/entry/common.c:321 page has been migrated, last migrate reason: compaction ------------[ cut here ]------------ WARNING: CPU: 2 PID: 5104 at include/linux/memcontrol.h:775 folio_lruvec include/linux/memcontrol.h:775 [inline] WARNING: CPU: 2 PID: 5104 at include/linux/memcontrol.h:775 zswap_folio_swapin+0x47d/0x5a0 mm/zswap.c:381 Modules linked in: CPU: 2 PID: 5104 Comm: syz-fuzzer Not tainted 6.8.0-rc2-syzkaller-00031-g861c0981648f #0 Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.16.2-debian-1.16.2-1 04/01/2014 RIP: 0010:folio_lruvec include/linux/memcontrol.h:775 [inline] RIP: 0010:zswap_folio_swapin+0x47d/0x5a0 mm/zswap.c:381 Code: e8 d8 9f ae ff 45 84 e4 0f 85 e7 fc ff ff e8 9a a4 ae ff 48 c7 c6 20 9a da 8a 48 89 df e8 2b 1a ee ff c6 05 d1 8f 4b 0d 01 90 <0f> 0b 90 e9 c3 fc ff ff e8 76 a4 ae ff 48 c7 c6 60 99 da 8a 48 89 RSP: 0018:ffffc9000397f8c0 EFLAGS: 00010293 RAX: 0000000000000000 RBX: ffffea0000a74300 RCX: ffffc9000397f720 RDX: ffff88801a064800 RSI: ffffffff81d98145 RDI: ffffffff8b2fdc00 RBP: 0000000000000000 R08: 0000000000000000 R09: fffffbfff1e76002 R10: ffffffff8f3b0017 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000000 R14: 00000000000069a1 R15: 0000000000000003 FS: 000000c000056490(0000) GS:ffff88802c800000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000000030623000 CR3: 000000001c68c000 CR4: 0000000000350ef0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> swap_cluster_readahead+0x4fb/0x710 mm/swap_state.c:685 swapin_readahead+0x132/0xe60 mm/swap_state.c:886 do_swap_page+0x4a6/0x30f0 mm/memory.c:3898 handle_pte_fault mm/memory.c:5147 [inline] __handle_mm_fault+0x13a0/0x4900 mm/memory.c:5285 handle_mm_fault+0x47a/0xa10 mm/memory.c:5450 do_user_addr_fault+0x30b/0x1030 arch/x86/mm/fault.c:1364 handle_page_fault arch/x86/mm/fault.c:1507 [inline] exc_page_fault+0x5d/0xc0 arch/x86/mm/fault.c:1563 asm_exc_page_fault+0x26/0x30 arch/x86/include/asm/idtentry.h:570 RIP: 0033:0x46d3b9 Code: fe 7f 44 1f 80 c5 f8 77 c3 80 3d 84 7c c7 01 01 75 0d c5 f9 ef c0 48 81 fb 00 00 00 02 73 13 48 89 d9 48 c1 e9 03 48 83 e3 07 <f3> 48 ab e9 65 fe ff ff c5 fe 7f 07 48 89 fe 48 83 c7 20 48 83 e7 RSP: 002b:000000c00108b700 EFLAGS: 00010206 RAX: 0000000000000000 RBX: 0000000000000006 RCX: 0000000000000400 RDX: 000000c00258f002 RSI: 00000000222172b0 RDI: 000000c00258fffa RBP: 000000c00108b758 R08: 0000000000000000 R09: 000000000000a000 R10: 000000c002588000 R11: 0000000000000000 R12: 0000000000000000 R13: 0000000000000040 R14: 000000c000508ea0 R15: 000000c000056400 </TASK> --- 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 syzkaller@xxxxxxxxxxxxxxxx. 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 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
