syzbot


WARNING in trace_suspend_resume

Status: upstream: reported C repro on 2025/07/31 14:52
Subsystems: mm
[Documentation on labels]
Reported-by: syzbot+99d4fec338b62b703891@syzkaller.appspotmail.com
First crash: 23d, last: 4h33m
Discussions (1)
Title Replies (including bot) Last reply
[syzbot] [bpf?] WARNING in trace_suspend_resume 1 (4) 2025/08/01 10:43
Last patch testing requests (1)
Created Duration User Patch Repo Result
2025/08/01 10:14 27m david@redhat.com patch upstream OK log

Sample crash report:
------------[ cut here ]------------
WARNING: CPU: 0 PID: 4155 at mm/highmem.c:622 kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622
Modules linked in:
Kernel panic - not syncing: kernel: panic_on_warn set ...
CPU: 0 UID: 0 PID: 4155 Comm: syz.1.17 Not tainted 6.16.0-syzkaller #0 PREEMPT 
Hardware name: ARM-Versatile Express
Call trace: 
[<80201a24>] (dump_backtrace) from [<80201b20>] (show_stack+0x18/0x1c arch/arm/kernel/traps.c:257)
 r7:00000000 r6:8281f77c r5:00000000 r4:8224bc00
[<80201b08>] (show_stack) from [<8021fb00>] (__dump_stack lib/dump_stack.c:94 [inline])
[<80201b08>] (show_stack) from [<8021fb00>] (dump_stack_lvl+0x54/0x7c lib/dump_stack.c:120)
[<8021faac>] (dump_stack_lvl) from [<8021fb40>] (dump_stack+0x18/0x1c lib/dump_stack.c:129)
 r5:00000000 r4:82a76d18
[<8021fb28>] (dump_stack) from [<80202624>] (vpanic+0x10c/0x360 kernel/panic.c:440)
[<80202518>] (vpanic) from [<802028ac>] (trace_suspend_resume+0x0/0xd8 kernel/panic.c:574)
 r7:804be014
[<80202878>] (panic) from [<802548c4>] (check_panic_on_warn kernel/panic.c:333 [inline])
[<80202878>] (panic) from [<802548c4>] (get_taint+0x0/0x1c kernel/panic.c:328)
 r3:8280c684 r2:00000001 r1:822326d8 r0:8223a0a0
[<80254850>] (check_panic_on_warn) from [<80254a28>] (__warn+0x80/0x188 kernel/panic.c:845)
[<802549a8>] (__warn) from [<80254ca8>] (warn_slowpath_fmt+0x178/0x1f4 kernel/panic.c:872)
 r8:00000009 r7:82266338 r6:df985d14 r5:840d5400 r4:00000000
[<80254b34>] (warn_slowpath_fmt) from [<804be014>] (kunmap_local_indexed+0x20c/0x224 mm/highmem.c:622)
 r10:00000000 r9:ded86c30 r8:deb6caa4 r7:00a00000 r6:00000003 r5:840d5400
 r4:ffefd000
[<804bde08>] (kunmap_local_indexed) from [<8053ace8>] (__kunmap_local include/linux/highmem-internal.h:102 [inline])
[<804bde08>] (kunmap_local_indexed) from [<8053ace8>] (move_pages_pte mm/userfaultfd.c:1457 [inline])
[<804bde08>] (kunmap_local_indexed) from [<8053ace8>] (move_pages+0xb1c/0x1a00 mm/userfaultfd.c:1860)
 r7:00a00000 r6:00000000 r5:8490d6ac r4:ffefb000
[<8053a1cc>] (move_pages) from [<805c401c>] (userfaultfd_move fs/userfaultfd.c:1923 [inline])
[<8053a1cc>] (move_pages) from [<805c401c>] (userfaultfd_ioctl+0x1254/0x2408 fs/userfaultfd.c:2046)
 r10:8425d6c0 r9:df985e98 r8:00000001 r7:21000000 r6:00000000 r5:20000040
 r4:8486d000
[<805c2dc8>] (userfaultfd_ioctl) from [<8056c4d4>] (vfs_ioctl fs/ioctl.c:51 [inline])
[<805c2dc8>] (userfaultfd_ioctl) from [<8056c4d4>] (do_vfs_ioctl fs/ioctl.c:552 [inline])
[<805c2dc8>] (userfaultfd_ioctl) from [<8056c4d4>] (__do_sys_ioctl fs/ioctl.c:596 [inline])
[<805c2dc8>] (userfaultfd_ioctl) from [<8056c4d4>] (sys_ioctl+0x130/0xba0 fs/ioctl.c:584)
 r10:840d5400 r9:00000003 r8:8572d780 r7:20000040 r6:8572d780 r5:00000000
 r4:c028aa05
[<8056c3a4>] (sys_ioctl) from [<80200060>] (ret_fast_syscall+0x0/0x1c arch/arm/mm/proc-v7.S:67)
Exception stack(0xdf985fa8 to 0xdf985ff0)
5fa0:                   00000000 00000000 00000003 c028aa05 20000040 00000000
5fc0: 00000000 00000000 002f6300 00000036 00000000 002f62d4 00000938 00000000
5fe0: 7eb28780 7eb28770 000193dc 001321f0
 r10:00000036 r9:840d5400 r8:8020029c r7:00000036 r6:002f6300 r5:00000000
 r4:00000000
Rebooting in 86400 seconds..

Crashes (526):
Time Kernel Commit Syzkaller Config Log Report Syz repro C repro VM info Assets (help?) Manager Title
2025/08/01 10:08 upstream f2d282e1dfb3 0c075d67 .config console log report syz / log C [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/23 14:28 upstream 6debb6904172 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/23 14:28 upstream 6debb6904172 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/23 13:20 upstream 6debb6904172 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/22 23:46 upstream cf6fc5eefc5b bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/22 22:13 upstream cf6fc5eefc5b bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/22 13:08 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/22 10:13 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/22 08:54 upstream 3957a5720157 bf27483f .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/21 20:58 upstream 32b7144f806e 3e79b825 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/21 19:53 upstream 32b7144f806e 3e79b825 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/21 12:37 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/21 07:49 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/21 06:38 upstream 41cd3fd15263 0b9605c8 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/20 18:05 upstream b19a97d57c15 bd178e57 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/20 17:12 upstream b19a97d57c15 bd178e57 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/20 08:41 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/20 03:41 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/20 03:39 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/20 02:31 upstream b19a97d57c15 79512909 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/19 15:29 upstream be48bcf004f9 523f460e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/19 06:26 upstream be48bcf004f9 6e8d317a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/19 05:19 upstream be48bcf004f9 6e8d317a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/19 04:13 upstream be48bcf004f9 6e8d317a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/19 04:03 upstream be48bcf004f9 6e8d317a .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/18 04:29 upstream 8d561baae505 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/17 14:04 upstream 99bade344cfa 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/17 12:55 upstream 99bade344cfa 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/17 12:18 upstream 99bade344cfa 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/17 01:21 upstream 90d970cade8e 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/17 00:05 upstream 90d970cade8e 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/16 23:08 upstream 90d970cade8e 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/16 12:24 upstream dfd4b508c8c6 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/16 11:14 upstream dfd4b508c8c6 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/16 09:57 upstream dfd4b508c8c6 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/15 20:35 upstream d7ee5bdce789 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/15 10:30 upstream 24ea63ea3877 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/15 09:56 upstream 24ea63ea3877 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/15 08:39 upstream 24ea63ea3877 1804e95e .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/14 19:23 upstream 0cc53520e68b dcc075fb .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/14 18:04 upstream 0cc53520e68b dcc075fb .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/14 17:21 upstream 0cc53520e68b dcc075fb .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/08/14 09:07 upstream dfc0f6373094 22ec1469 .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/07/31 12:47 upstream 260f6f4fda93 f8f2b4da .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
2025/07/31 10:43 upstream 260f6f4fda93 f8f2b4da .config console log report info [disk image (non-bootable)] [vmlinux] [kernel image] ci-qemu2-arm32 WARNING in trace_suspend_resume
* Struck through repros no longer work on HEAD.