Hello, syzbot found the following issue on: HEAD commit: 9e6869691724 Add linux-next specific files for 20240812 git tree: linux-next console output: https://syzkaller.appspot.com/x/log.txt?x=14c97e83980000 kernel config: https://syzkaller.appspot.com/x/.config?x=61ba6f3b22ee5467 dashboard link: https://syzkaller.appspot.com/bug?extid=4745e725b07d34503a64 compiler: Debian clang version 15.0.6, GNU ld (GNU Binutils for Debian) 2.40 syz repro: https://syzkaller.appspot.com/x/repro.syz?x=10cf435d980000 Downloadable assets: disk image: https://storage.googleapis.com/syzbot-assets/f1b086192f50/disk-9e686969.raw.xz vmlinux: https://storage.googleapis.com/syzbot-assets/b457920fb52e/vmlinux-9e686969.xz kernel image: https://storage.googleapis.com/syzbot-assets/e63ba9cce98a/bzImage-9e686969.xz The issue was bisected to: commit d65aea610f0a14cda5ec56a154c724584ef7da17 Author: Barry Song <v-songbaohua@xxxxxxxx> Date: Wed Aug 7 21:58:59 2024 +0000 mm: attempt to batch free swap entries for zap_pte_range() bisection log: https://syzkaller.appspot.com/x/bisect.txt?x=1493ea91980000 final oops: https://syzkaller.appspot.com/x/report.txt?x=1693ea91980000 console output: https://syzkaller.appspot.com/x/log.txt?x=1293ea91980000 IMPORTANT: if you fix the issue, please add the following tag to the commit: Reported-by: syzbot+4745e725b07d34503a64@xxxxxxxxxxxxxxxxxxxxxxxxx Fixes: d65aea610f0a ("mm: attempt to batch free swap entries for zap_pte_range()") ------------[ cut here ]------------ kernel BUG at mm/swap_cgroup.c:141! Oops: invalid opcode: 0000 [#1] PREEMPT SMP KASAN PTI CPU: 1 UID: 0 PID: 5371 Comm: syz.0.15 Not tainted 6.11.0-rc3-next-20240812-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 06/27/2024 RIP: 0010:swap_cgroup_record+0x2cd/0x2d0 mm/swap_cgroup.c:141 Code: e7 e8 a7 c9 f6 ff e9 64 fe ff ff e8 cd 41 8e ff 48 c7 c7 c0 db a5 8e 48 89 de e8 2e 8c e8 02 e9 7a fd ff ff e8 b4 41 8e ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f RSP: 0018:ffffc90003e172f8 EFLAGS: 00010093 RAX: ffffffff82054c9c RBX: 000000000000000b RCX: ffff88802298bc00 RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff82054b43 R09: fffff520007c2e3c R10: dffffc0000000000 R11: fffff520007c2e3c R12: ffff88801cf0f014 R13: 0000000000000000 R14: 000000000000000a R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9332107a8c CR3: 000000000e734000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 Call Trace: <TASK> __mem_cgroup_uncharge_swap+0x84/0x2e0 mm/memcontrol.c:5118 mem_cgroup_uncharge_swap include/linux/swap.h:668 [inline] swap_entry_range_free+0x45f/0x1120 mm/swapfile.c:1556 __swap_entries_free mm/swapfile.c:1518 [inline] free_swap_and_cache_nr+0xa65/0xae0 mm/swapfile.c:1876 zap_pte_range mm/memory.c:1653 [inline] zap_pmd_range mm/memory.c:1736 [inline] zap_pud_range mm/memory.c:1765 [inline] zap_p4d_range mm/memory.c:1786 [inline] unmap_page_range+0x1924/0x42c0 mm/memory.c:1807 unmap_vmas+0x3cc/0x5f0 mm/memory.c:1897 exit_mmap+0x267/0xc20 mm/mmap.c:1923 __mmput+0x115/0x390 kernel/fork.c:1347 exit_mm+0x220/0x310 kernel/exit.c:571 do_exit+0x9b2/0x28e0 kernel/exit.c:926 do_group_exit+0x207/0x2c0 kernel/exit.c:1088 __do_sys_exit_group kernel/exit.c:1099 [inline] __se_sys_exit_group kernel/exit.c:1097 [inline] __x64_sys_exit_group+0x3f/0x40 kernel/exit.c:1097 x64_sys_call+0x2634/0x2640 arch/x86/include/generated/asm/syscalls_64.h:232 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xf3/0x230 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f9331f779f9 Code: Unable to access opcode bytes at 0x7f9331f779cf. RSP: 002b:00007fff65ce5d18 EFLAGS: 00000246 ORIG_RAX: 00000000000000e7 RAX: ffffffffffffffda RBX: 0000000000000000 RCX: 00007f9331f779f9 RDX: 0000000000000064 RSI: 0000000000000000 RDI: 0000000000000000 RBP: 0000000000000003 R08: 00007fff65ce5dff R09: 00007f93320d0260 R10: 0000000000000001 R11: 0000000000000246 R12: 00007f93320d0f68 R13: 00007f93320d0260 R14: 0000000000000003 R15: 00007fff65ce5dc0 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:swap_cgroup_record+0x2cd/0x2d0 mm/swap_cgroup.c:141 Code: e7 e8 a7 c9 f6 ff e9 64 fe ff ff e8 cd 41 8e ff 48 c7 c7 c0 db a5 8e 48 89 de e8 2e 8c e8 02 e9 7a fd ff ff e8 b4 41 8e ff 90 <0f> 0b 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 90 66 0f 1f RSP: 0018:ffffc90003e172f8 EFLAGS: 00010093 RAX: ffffffff82054c9c RBX: 000000000000000b RCX: ffff88802298bc00 RDX: 0000000000000000 RSI: 000000000000000a RDI: 0000000000000000 RBP: 0000000000000001 R08: ffffffff82054b43 R09: fffff520007c2e3c R10: dffffc0000000000 R11: fffff520007c2e3c R12: ffff88801cf0f014 R13: 0000000000000000 R14: 000000000000000a R15: 0000000000000000 FS: 0000000000000000(0000) GS:ffff8880b9100000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007f9332107a8c CR3: 000000000e734000 CR4: 00000000003506f0 DR0: 0000000000000000 DR1: 0000000000000000 DR2: 0000000000000000 DR3: 0000000000000000 DR6: 00000000fffe0ff0 DR7: 0000000000000400 --- 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. For information about bisection process see: https://goo.gl/tpsmEJ#bisection If the report is already addressed, let syzbot know by replying with: #syz fix: exact-commit-title If you want syzbot to run the reproducer, reply with: #syz test: git://repo/address.git branch-or-commit-hash If you attach or paste a git patch, syzbot will apply it before testing. 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
