syzbot


WARNING in kunmap_local_indexed

Status: upstream: reported C repro on 2024/02/26 13:19
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+691cb37358791bebebe6@syzkaller.appspotmail.com
First crash: 51d, last: 20h11m
Discussions (2)
Title Replies (including bot) Last reply
[syzbot] Monthly mm report (Mar 2024) 0 (1) 2024/03/19 21:40
[syzbot] [mm?] WARNING in kunmap_local_indexed 0 (1) 2024/02/26 13:19

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 1 PID: 2978 at mm/highmem.c:611 kunmap_local_indexed+0x210/0x228 mm/highmem.c:611
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 1 PID: 2978 Comm: syz-executor914 Not tainted 6.8.0-rc5-syzkaller #0
Hardware name: ARM-Versatile Express
Backtrace: 
[<81837b0c>] (dump_backtrace) from [<81837c08>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:256)
 r7:00000000 r6:82622dc4 r5:60000093 r4:81fbd4bc
[<81837bf0>] (show_stack) from [<81855124>] (__dump_stack lib/dump_stack.c:88 [inline])
[<81837bf0>] (show_stack) from [<81855124>] (dump_stack_lvl+0x48/0x54 lib/dump_stack.c:106)
[<818550dc>] (dump_stack_lvl) from [<81855148>] (dump_stack+0x18/0x1c lib/dump_stack.c:113)
 r5:00000000 r4:82850d18
[<81855130>] (dump_stack) from [<818386b0>] (panic+0x120/0x378 kernel/panic.c:344)
[<81838590>] (panic) from [<802439cc>] (check_panic_on_warn kernel/panic.c:237 [inline])
[<81838590>] (panic) from [<802439cc>] (print_tainted+0x0/0xa0 kernel/panic.c:232)
 r3:8260c484 r2:00000001 r1:81fa5e94 r0:81fadb60
 r7:8046cfa0
[<80243958>] (check_panic_on_warn) from [<80243bc0>] (__warn+0x7c/0x180 kernel/panic.c:677)
[<80243b44>] (__warn) from [<80243e3c>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:702)
 r8:00000009 r7:81fd3b7c r6:df961b84 r5:83668c00 r4:00000000
[<80243cc8>] (warn_slowpath_fmt) from [<8046cfa0>] (kunmap_local_indexed+0x210/0x228 mm/highmem.c:611)
 r10:200fb000 r9:ffeda7d8 r8:836c9830 r7:84151500 r6:00000003 r5:83668c00
 r4:ffedc000
[<8046cd90>] (kunmap_local_indexed) from [<804d9c84>] (__kunmap_local include/linux/highmem-internal.h:94 [inline])
[<8046cd90>] (kunmap_local_indexed) from [<804d9c84>] (move_pages_pte mm/userfaultfd.c:1162 [inline])
[<8046cd90>] (kunmap_local_indexed) from [<804d9c84>] (move_pages+0x5a4/0x1050 mm/userfaultfd.c:1452)
 r7:84151500 r6:00000000 r5:00000000 r4:fffffffe
[<804d96e0>] (move_pages) from [<80551f30>] (userfaultfd_move fs/userfaultfd.c:2047 [inline])
[<804d96e0>] (move_pages) from [<80551f30>] (userfaultfd_ioctl+0x117c/0x211c fs/userfaultfd.c:2169)
 r10:8415157c r9:00000000 r8:00000000 r7:00000001 r6:20000080 r5:84151500
 r4:84468000
[<80550db4>] (userfaultfd_ioctl) from [<80502158>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<80550db4>] (userfaultfd_ioctl) from [<80502158>] (do_vfs_ioctl fs/ioctl.c:831 [inline])
[<80550db4>] (userfaultfd_ioctl) from [<80502158>] (__do_sys_ioctl fs/ioctl.c:869 [inline])
[<80550db4>] (userfaultfd_ioctl) from [<80502158>] (sys_ioctl+0x118/0xb58 fs/ioctl.c:857)
 r10:83668c00 r9:00000003 r8:842e2900 r7:20000080 r6:842e2900 r5:00000000
 r4:c028aa05
[<80502040>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:66)
Exception stack(0xdf961fa8 to 0xdf961ff0)
1fa0:                   ffffffff 00000000 00000003 c028aa05 20000080 00000000
1fc0: ffffffff 00000000 0008e050 00000036 000f4240 00000000 00000001 00003a97
1fe0: 7ebe5c70 7ebe5c60 00010694 0002e7e0
 r10:00000036 r9:83668c00 r8:80200288 r7:00000036 r6:0008e050 r5:00000000
 r4:ffffffff
Rebooting in 86400 seconds..

Crashes (58):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2024/02/26 07:15 upstream 70ff1fe626a1 8d446f15 .config console log report syz C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/13 08:56 upstream 8f2c057754b2 c8349e48 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/12 21:26 upstream 586b5dfb51b9 a154e056 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/12 17:14 upstream 586b5dfb51b9 a154e056 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/12 03:03 upstream 00dcf5d862e8 27de0a5c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/11 17:00 upstream e8c39d0f57f3 3023abf0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/11 15:14 upstream e8c39d0f57f3 3023abf0 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/10 17:54 upstream 2c71fdf02a95 bb5e6c0f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/10 02:50 upstream 2c71fdf02a95 171ec371 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/09 19:20 upstream 20cb38a7af88 56086b24 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/09 15:57 upstream 20cb38a7af88 56086b24 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/08 00:54 upstream 9fe30842a90b ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/07 21:47 upstream 9fe30842a90b ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/07 05:56 upstream f2f80ac80987 ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/06 16:35 upstream 6c6e47d69d82 ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/05 23:45 upstream e8b0ccb2a787 ca620dd8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/05 15:37 upstream c88b9b4cde17 47d9c0ed .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/05 09:43 upstream c88b9b4cde17 47d9c0ed .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/05 09:33 upstream c88b9b4cde17 47d9c0ed .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/04 08:00 upstream c85af715cac0 51c4dcff .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/03 19:57 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/03 19:49 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/03 19:39 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/03 19:38 upstream 3e92c1e6cd87 9d2a90af .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/03 08:07 upstream b1e6ec0a0fd0 7925100d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/03 08:03 upstream b1e6ec0a0fd0 7925100d .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/02 18:19 upstream 026e680b0a08 f861ecca .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/02 15:20 upstream 026e680b0a08 f861ecca .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/02 05:49 upstream 026e680b0a08 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/02 05:20 upstream 026e680b0a08 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/02 04:30 upstream 026e680b0a08 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/02 02:53 upstream 026e680b0a08 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/01 07:47 upstream 18737353cca0 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/04/01 07:32 upstream 18737353cca0 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/31 15:22 upstream 712e14250dd2 6baf5069 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/29 14:05 upstream 317c7bc0ef03 c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/29 04:50 upstream 317c7bc0ef03 c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/29 04:44 upstream 317c7bc0ef03 c52bcb23 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/28 17:10 upstream 8d025e2092e2 ceaf7ddd .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/27 11:34 upstream 7033999ecd7b 454571b6 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/26 10:55 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/26 10:52 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/26 09:18 upstream 928a87efa423 bcd9b39f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/23 08:00 upstream bfa8f18691ed 0ea90952 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/16 02:42 upstream 277100b3d5fe d615901c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/16 02:38 upstream 277100b3d5fe d615901c .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/10 10:55 upstream 005f6f34bd47 6ee49f2e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/03/10 10:12 upstream 005f6f34bd47 6ee49f2e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/02/29 12:39 upstream e326df53af00 352ab904 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/02/29 12:39 upstream e326df53af00 352ab904 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/02/29 12:39 upstream e326df53af00 352ab904 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/02/22 13:22 upstream 39133352cbed 345111b5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/02/22 13:13 upstream 39133352cbed 345111b5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
2024/02/22 13:12 upstream 39133352cbed 345111b5 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in kunmap_local_indexed
* Struck through repros no longer work on HEAD.