exit_to_user_mode_prepare+0x16e/0x220 kernel/entry/common.c:203
 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:309
 irqentry_exit+0x12/0x40 kernel/entry/common.c:412
 exc_general_protection+0x28f/0x450 arch/x86/kernel/traps.c:721
 asm_exc_general_protection+0x27/0x30 arch/x86/include/asm/idtentry.h:564
RIP: 0033:0x7f2b8f68b601
=====================================================
BUG: KMSAN: uninit-value in show_opcodes+0x2c1/0x2e0 arch/x86/kernel/dumpstack.c:123
 show_opcodes+0x2c1/0x2e0 arch/x86/kernel/dumpstack.c:123
 show_ip arch/x86/kernel/dumpstack.c:144 [inline]
 show_iret_regs+0xe3/0x230 arch/x86/kernel/dumpstack.c:149
 __show_regs+0x31/0xc90 arch/x86/kernel/process_64.c:74
 show_regs_if_on_stack+0x45e/0x530 arch/x86/kernel/dumpstack.c:167
 show_trace_log_lvl+0x392/0x490 arch/x86/kernel/dumpstack.c:298
 show_stack+0x55/0x60 arch/x86/kernel/dumpstack.c:318
 __dump_stack lib/dump_stack.c:88 [inline]
 dump_stack_lvl+0x1c8/0x256 lib/dump_stack.c:106
 dump_stack+0x1a/0x23 lib/dump_stack.c:113
 dump_header+0x155/0x9a0 mm/oom_kill.c:460
 oom_kill_process+0x2e2/0xb30 mm/oom_kill.c:1036
 out_of_memory+0xeb5/0x1220 mm/oom_kill.c:1174
 mem_cgroup_out_of_memory+0x24a/0x3a0 mm/memcontrol.c:1706
 mem_cgroup_oom+0x856/0xa80 mm/memcontrol.c:1936
 try_charge_memcg+0x134f/0x1e20 mm/memcontrol.c:2729
 try_charge mm/memcontrol.c:2823 [inline]
 charge_memcg+0xe4/0x3c0 mm/memcontrol.c:6879
 __mem_cgroup_charge+0x6f/0x2b0 mm/memcontrol.c:6900
 mem_cgroup_charge include/linux/memcontrol.h:667 [inline]
 shmem_add_to_page_cache+0x73b/0x1070 mm/shmem.c:710
 shmem_get_folio_gfp+0x1ea7/0x3900 mm/shmem.c:1943
 shmem_get_folio mm/shmem.c:2044 [inline]
 shmem_write_begin+0x15a/0x530 mm/shmem.c:2514
 generic_perform_write+0x3f1/0xbf0 mm/filemap.c:3753
 __generic_file_write_iter+0x38f/0x910 mm/filemap.c:3881
 generic_file_write_iter+0xff/0x5a0 mm/filemap.c:3913
 __kernel_write_iter+0x326/0x9a0 fs/read_write.c:517
 dump_emit_page+0x443/0x6c0 fs/coredump.c:857
 dump_user_range+0xd3/0x680 fs/coredump.c:908
 elf_core_dump+0x5d87/0x60e0 fs/binfmt_elf.c:2311
 do_coredump+0x3480/0x4a80 fs/coredump.c:755
 get_signal+0x1652/0x2050 kernel/signal.c:2844
 arch_do_signal_or_restart+0x56/0xae0 arch/x86/kernel/signal.c:869
 exit_to_user_mode_loop+0xea/0x320 kernel/entry/common.c:168
 exit_to_user_mode_prepare+0x16e/0x220 kernel/entry/common.c:203
 irqentry_exit_to_user_mode+0x9/0x20 kernel/entry/common.c:309
 irqentry_exit+0x12/0x40 kernel/entry/common.c:412
 exc_general_protection+0x28f/0x450 arch/x86/kernel/traps.c:721
 asm_exc_general_protection+0x27/0x30 arch/x86/include/asm/idtentry.h:564

Local variable opcodes created at:
 show_opcodes+0x49/0x2e0 arch/x86/kernel/dumpstack.c:118
 show_ip arch/x86/kernel/dumpstack.c:144 [inline]
 show_iret_regs+0xe3/0x230 arch/x86/kernel/dumpstack.c:149

CPU: 0 PID: 7599 Comm: syz-executor.4 Not tainted 6.1.0-rc2-syzkaller-61955-g4a3e741a3d6a #0
Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 10/11/2022
=====================================================