kernel panic: OOM! (2)

[syzbot]

Hello,

syzbot found the following crash on:

HEAD commit: 93b9607ebeff Serialize printing during panic()
git tree: https://github.com/akaros/akaros.git/master
console output: https://syzkaller.appspot.com/x/log.txt?x=177f4770400000
kernel config: https://syzkaller.appspot.com/x/.config?x=efef8cf2939304d3
dashboard link: https://syzkaller.appspot.com/bug?extid=21f5aae28bd9e5d211a1
compiler:

Unfortunately, I don't have any reproducer for this crash yet.

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+21f5aa...@syzkaller.appspotmail.com

kernel panic at kern/src/arena.c:686, from core 0: OOM!
Stack Backtrace on Core 0:
#01 [<0xffffffffc200a3b7>] in backtrace at src/kdebug.c:219
#02 [<0xffffffffc2009b7c>] in _panic at src/init.c:266
#03 [<0xffffffffc2002a45>] in get_more_resources at src/arena.c:686
#04 [<0xffffffffc200229b>] in arena_alloc at src/arena.c:736
#05 [<0xffffffffc20029e4>] in get_more_resources at src/arena.c:674
#06 [<0xffffffffc200229b>] in arena_alloc at src/arena.c:736
#07 [<0xffffffffc2046095>] in kpages_alloc at src/page_alloc.c:80
#08 [<0xffffffffc2006a20>] in env_setup_vm at src/env.c:49
#09 [<0xffffffffc204a7de>] in proc_alloc at src/process.c:372
#10 [<0xffffffffc20571b2>] in sys_fork at src/syscall.c:947
#11 [<0xffffffffc2059149>] in syscall at src/syscall.c:2528
#12 [<0xffffffffc2059304>] in run_local_syscall at src/syscall.c:2563
#13 [<0xffffffffc2059839>] in prep_syscalls at src/syscall.c:2583
#14 [<0xffffffffc20aaf1a>] in sysenter_callwrapper at arch/x86/trap.c:859


---
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[syzbot]

syzbot has found a reproducer for the following crash on:

HEAD commit: c5f7000db927 Print backtraces when we do a warn()
git tree: https://github.com/akaros/akaros.git/master
console output: https://syzkaller.appspot.com/x/log.txt?x=151b0c44400000

kernel config: https://syzkaller.appspot.com/x/.config?x=efef8cf2939304d3
dashboard link: https://syzkaller.appspot.com/bug?extid=21f5aae28bd9e5d211a1
compiler:

syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=10742f94400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+21f5aa...@syzkaller.appspotmail.com

kernel panic at kern/src/arena.c:686, from core 0: OOM!
Stack Backtrace on Core 0:

#01 [<0xffffffffc200a2dc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268
#03 [<0xffffffffc2002a97>] in get_more_resources at src/arena.c:686
#04 [<0xffffffffc20022db>] in arena_alloc at src/arena.c:736
#05 [<0xffffffffc2002a34>] in get_more_resources at src/arena.c:674
#06 [<0xffffffffc20022db>] in arena_alloc at src/arena.c:736
#07 [<0xffffffffc2046045>] in kpages_alloc at src/page_alloc.c:80
#08 [<0xffffffffc2006a70>] in env_setup_vm at src/env.c:49
#09 [<0xffffffffc204a8be>] in proc_alloc at src/process.c:372
#10 [<0xffffffffc20574c2>] in sys_fork at src/syscall.c:947
#11 [<0xffffffffc2059459>] in syscall at src/syscall.c:2528
#12 [<0xffffffffc2059624>] in run_local_syscall at src/syscall.c:2563
#13 [<0xffffffffc2059b59>] in prep_syscalls at src/syscall.c:2583
#14 [<0xffffffffc20ab41a>] in sysenter_callwrapper at arch/x86/trap.c:854

[syzbot]

syzbot has found a reproducer for the following crash on:

HEAD commit: 8dc899e19d0f vmm: x86: Set the reserved bits in rflags
git tree: https://github.com/akaros/akaros.git/master
console output: https://syzkaller.appspot.com/x/log.txt?x=135c2f94400000

kernel config: https://syzkaller.appspot.com/x/.config?x=efef8cf2939304d3
dashboard link: https://syzkaller.appspot.com/bug?extid=21f5aae28bd9e5d211a1
compiler:

syzkaller repro:https://syzkaller.appspot.com/x/repro.syz?x=109db51c400000
C reproducer: https://syzkaller.appspot.com/x/repro.c?x=17e28768400000

IMPORTANT: if you fix the bug, please add the following tag to the commit:
Reported-by: syzbot+21f5aa...@syzkaller.appspotmail.com

kernel panic at kern/src/arena.c:686, from core 0: OOM!
Stack Backtrace on Core 0:

#01 [<0xffffffffc200a2dc>] in backtrace at src/kdebug.c:220
#02 [<0xffffffffc2009afd>] in _panic at src/init.c:268

#03 [<0xffffffffc2002a97>] in get_more_resources at src/arena.c:686
#04 [<0xffffffffc20022db>] in arena_alloc at src/arena.c:736
#05 [<0xffffffffc2002a34>] in get_more_resources at src/arena.c:674
#06 [<0xffffffffc20022db>] in arena_alloc at src/arena.c:736
#07 [<0xffffffffc2045ff5>] in kpages_alloc at src/page_alloc.c:80
#08 [<0xffffffffc200a71e>] in kmalloc at src/kmalloc.c:62
#09 [<0xffffffffc200a7df>] in kzmalloc at src/kmalloc.c:88
#10 [<0xffffffffc20739c0>] in capwrite at drivers/dev/capability.c:230
#11 [<0xffffffffc20401f1>] in rwrite at src/ns/sysfile.c:1123
#12 [<0xffffffffc204040b>] in syswrite at src/ns/sysfile.c:1141
#13 [<0xffffffffc2055f31>] in sys_write at src/syscall.c:1785
#14 [<0xffffffffc2059409>] in syscall at src/syscall.c:2528
#15 [<0xffffffffc20595d4>] in run_local_syscall at src/syscall.c:2563
#16 [<0xffffffffc2059b09>] in prep_syscalls at src/syscall.c:2583
#17 [<0xffffffffc20ab36a>] in sysenter_callwrapper at arch/x86/trap.c:854