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Date
July 2, 2025, 11:10 a.m.

Environment
qemu-armv7 

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[   40.735226] WARNING: mm/highmem.c:622 at kunmap_local_indexed+0x198/0x1a4, CPU#1: uffd-unit-tests/636
[   40.738027] Modules linked in: nfnetlink ip_tables x_tables
[   40.739142] CPU: 1 UID: 0 PID: 636 Comm: uffd-unit-tests Not tainted 6.16.0-rc4-next-20250702 #1 NONE 
[   40.739531] Hardware name: Generic DT based system
[   40.739828] Call trace: 
[   40.739997]  unwind_backtrace from show_stack+0x10/0x14
[   40.740408]  show_stack from dump_stack_lvl+0x50/0x5c
[   40.740583]  dump_stack_lvl from __warn+0xf0/0x1f8
[   40.740788]  __warn from warn_slowpath_fmt+0xa8/0x174
[   40.741060]  warn_slowpath_fmt from kunmap_local_indexed+0x198/0x1a4
[   40.741349]  kunmap_local_indexed from move_pages_pte+0xc40/0xf48
[   40.741595]  move_pages_pte from move_pages+0x488/0x680
[   40.741870]  move_pages from userfaultfd_ioctl+0x8e0/0x1dd8
[   40.742126]  userfaultfd_ioctl from sys_ioctl+0xa3c/0xaa8
[   40.742368]  sys_ioctl from ret_fast_syscall+0x0/0x5c
[   40.742646] Exception stack(0xf5b71fa8 to 0xf5b71ff0)
[   40.742915] 1fa0:                   00001000 00000005 00000005 c028aa05 b2d2ecd8 b2d2ecc8
[   40.743290] 1fc0: 00001000 00000005 b2d2ece0 00000036 b2d2ed84 b2d2ed50 b2d2ed7c b2d2ed58
[   40.743554] 1fe0: 00000036 b2d2ecb0 b6de1861 b6d4f736
[   40.744223] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

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[   41.138510] WARNING: mm/highmem.c:622 at kunmap_local_indexed+0x178/0x17c, CPU#1: uffd-unit-tests/634
[   41.140669] Modules linked in: fuse
[   41.141614] CPU: 1 UID: 0 PID: 634 Comm: uffd-unit-tests Not tainted 6.16.0-rc4-next-20250702 #1 NONE 
[   41.142001] Hardware name: Generic DT based system
[   41.142261] Call trace: 
[   41.142407]  unwind_backtrace from show_stack+0x18/0x1c
[   41.142744]  show_stack from dump_stack_lvl+0x6c/0x8c
[   41.142975]  dump_stack_lvl from __warn+0x98/0x14c
[   41.143359]  __warn from warn_slowpath_fmt+0x18c/0x194
[   41.143758]  warn_slowpath_fmt from kunmap_local_indexed+0x178/0x17c
[   41.143976]  kunmap_local_indexed from move_pages+0x83c/0x19c8
[   41.144156]  move_pages from userfaultfd_ioctl+0x12c8/0x2048
[   41.144328]  userfaultfd_ioctl from sys_ioctl+0x4cc/0xaf8
[   41.144504]  sys_ioctl from ret_fast_syscall+0x0/0x1c
[   41.145114] Exception stack(0xf9e79fa8 to 0xf9e79ff0)
[   41.145506] 9fa0:                   00001000 00000000 00000005 c028aa05 b2e4ecd8 b2e4ecb0
[   41.145812] 9fc0: 00001000 00000000 00000005 00000036 8010aa01 00450000 b2e4ed80 00000012
[   41.146105] 9fe0: 00000036 b2e4ec98 b6f01861 b6e6f736
[   41.146651] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

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[   38.505867] WARNING: mm/highmem.c:622 at kunmap_local_indexed+0x198/0x1a4, CPU#1: uffd-unit-tests/634
[   38.507248] Modules linked in: nfnetlink ip_tables x_tables
[   38.507858] CPU: 1 UID: 0 PID: 634 Comm: uffd-unit-tests Not tainted 6.16.0-rc4-next-20250702 #1 NONE 
[   38.508261] Hardware name: Generic DT based system
[   38.508509] Call trace: 
[   38.508672]  unwind_backtrace from show_stack+0x10/0x14
[   38.509033]  show_stack from dump_stack_lvl+0x50/0x5c
[   38.509246]  dump_stack_lvl from __warn+0xf0/0x1f8
[   38.509433]  __warn from warn_slowpath_fmt+0xa8/0x174
[   38.509744]  warn_slowpath_fmt from kunmap_local_indexed+0x198/0x1a4
[   38.509959]  kunmap_local_indexed from move_pages_pte+0xc40/0xf48
[   38.510181]  move_pages_pte from move_pages+0x488/0x680
[   38.510362]  move_pages from userfaultfd_ioctl+0x8e0/0x1dd8
[   38.510596]  userfaultfd_ioctl from sys_ioctl+0xa3c/0xaa8
[   38.510806]  sys_ioctl from ret_fast_syscall+0x0/0x5c
[   38.511008] Exception stack(0xf9be1fa8 to 0xf9be1ff0)
[   38.511244] 1fa0:                   00001000 00000005 00000005 c028aa05 b2d9ecd8 b2d9ecc8
[   38.511566] 1fc0: 00001000 00000005 b2d9ece0 00000036 b2d9ed84 b2d9ed50 b2d9ed7c b2d9ed58
[   38.511806] 1fe0: 00000036 b2d9ecb0 b6e51861 b6dbf736
[   38.512096] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details 

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[   41.225521] WARNING: mm/highmem.c:622 at kunmap_local_indexed+0x178/0x17c, CPU#0: uffd-unit-tests/634
[   41.227793] Modules linked in: fuse
[   41.228771] CPU: 0 UID: 0 PID: 634 Comm: uffd-unit-tests Not tainted 6.16.0-rc4-next-20250702 #1 NONE 
[   41.229169] Hardware name: Generic DT based system
[   41.229460] Call trace: 
[   41.229609]  unwind_backtrace from show_stack+0x18/0x1c
[   41.229960]  show_stack from dump_stack_lvl+0x6c/0x8c
[   41.230171]  dump_stack_lvl from __warn+0x98/0x14c
[   41.230401]  __warn from warn_slowpath_fmt+0x18c/0x194
[   41.230640]  warn_slowpath_fmt from kunmap_local_indexed+0x178/0x17c
[   41.230916]  kunmap_local_indexed from move_pages+0x83c/0x19c8
[   41.231119]  move_pages from userfaultfd_ioctl+0x12c8/0x2048
[   41.231373]  userfaultfd_ioctl from sys_ioctl+0x4cc/0xaf8
[   41.231591]  sys_ioctl from ret_fast_syscall+0x0/0x1c
[   41.231822] Exception stack(0xf9ee9fa8 to 0xf9ee9ff0)
[   41.232115] 9fa0:                   00001000 00000000 00000005 c028aa05 b2d6ecd8 b2d6ecb0
[   41.232423] 9fc0: 00001000 00000000 00000005 00000036 8010aa01 004b0000 b2d6ed80 00000012
[   41.232677] 9fe0: 00000036 b2d6ec98 b6e21861 b6d8f736
[   41.233214] ---[ end trace 0000000000000000 ]---
Metadata Full log Test run details