Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 Call Trace: __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xf2/0x150 lib/dump_stack.c:120 dump_stack+0x15/0x1a lib/dump_stack.c:129 dump_header+0x83/0x2d0 mm/oom_kill.c:461 oom_kill_process+0x341/0x4c0 mm/oom_kill.c:1034 ================================================================== BUG: KCSAN: data-race in data_alloc / prb_reserve write to 0xffffffff8667b1c0 of 8 bytes by task 17322 on cpu 1: data_alloc+0x291/0x2c0 kernel/printk/printk_ringbuffer.c:1096 prb_reserve+0x85e/0xb60 kernel/printk/printk_ringbuffer.c:1669 vprintk_store+0x558/0x870 kernel/printk/printk.c:2326 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86 _printk+0x7a/0xa0 kernel/printk/printk.c:2457 set_capacity_and_notify+0x151/0x200 block/genhd.c:93 loop_set_size+0x2e/0x70 drivers/block/loop.c:234 loop_configure+0x8bd/0xa50 drivers/block/loop.c:1105 lo_ioctl+0x607/0x1400 blkdev_ioctl+0x359/0x450 block/ioctl.c:693 vfs_ioctl fs/ioctl.c:51 [inline] __do_sys_ioctl fs/ioctl.c:906 [inline] __se_sys_ioctl+0xc9/0x140 fs/ioctl.c:892 __x64_sys_ioctl+0x43/0x50 fs/ioctl.c:892 x64_sys_call+0x1690/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:17 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f read to 0xffffffff8667b1c0 of 8 bytes by task 17296 on cpu 0: desc_read kernel/printk/printk_ringbuffer.c:482 [inline] desc_push_tail kernel/printk/printk_ringbuffer.c:778 [inline] desc_reserve kernel/printk/printk_ringbuffer.c:924 [inline] prb_reserve+0x235/0xb60 kernel/printk/printk_ringbuffer.c:1619 vprintk_store+0x558/0x870 kernel/printk/printk.c:2326 vprintk_emit+0x15e/0x680 kernel/printk/printk.c:2408 vprintk_default+0x26/0x30 kernel/printk/printk.c:2447 vprintk+0x75/0x80 kernel/printk/printk_safe.c:86 _printk+0x7a/0xa0 kernel/printk/printk.c:2457 printk_stack_address arch/x86/kernel/dumpstack.c:72 [inline] show_trace_log_lvl+0x380/0x400 arch/x86/kernel/dumpstack.c:285 __dump_stack lib/dump_stack.c:94 [inline] dump_stack_lvl+0xf2/0x150 lib/dump_stack.c:120 dump_stack+0x15/0x1a lib/dump_stack.c:129 dump_header+0x83/0x2d0 mm/oom_kill.c:461 oom_kill_process+0x341/0x4c0 mm/oom_kill.c:1034 out_of_memory+0x9af/0xbe0 mm/oom_kill.c:1172 mem_cgroup_out_of_memory+0x13e/0x190 mm/memcontrol.c:1630 mem_cgroup_oom mm/memcontrol.c:1653 [inline] try_charge_memcg+0x508/0x7f0 mm/memcontrol.c:2280 obj_cgroup_charge_pages+0xbd/0x1a0 mm/memcontrol.c:2646 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:2673 __alloc_pages_noprof+0x1bc/0x340 mm/page_alloc.c:4770 alloc_pages_mpol_noprof+0xb8/0x260 mm/mempolicy.c:2269 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2349 vm_area_alloc_pages mm/vmalloc.c:3591 [inline] __vmalloc_area_node mm/vmalloc.c:3669 [inline] __vmalloc_node_range_noprof+0x6eb/0xe80 mm/vmalloc.c:3846 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:667 ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:261 hash_netiface_create+0x273/0x730 net/netfilter/ipset/ip_set_hash_gen.h:1568 ip_set_create+0x359/0x8a0 net/netfilter/ipset/ip_set_core.c:1109 nfnetlink_rcv_msg+0x4a9/0x570 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2542 nfnetlink_rcv+0x16c/0x15d0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:726 ____sys_sendmsg+0x312/0x410 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x19d/0x230 net/socket.c:2669 __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2672 x64_sys_call+0x2734/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f value changed: 0x00000000000123f0 -> 0x00000000000b0a10 Reported by Kernel Concurrency Sanitizer on: CPU: 0 UID: 0 PID: 17296 Comm: syz.0.4942 Not tainted 6.13.0-syzkaller-01005-gb9d8a295ed6b #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 12/27/2024 ================================================================== out_of_memory+0x9af/0xbe0 mm/oom_kill.c:1172 mem_cgroup_out_of_memory+0x13e/0x190 mm/memcontrol.c:1630 mem_cgroup_oom mm/memcontrol.c:1653 [inline] try_charge_memcg+0x508/0x7f0 mm/memcontrol.c:2280 obj_cgroup_charge_pages+0xbd/0x1a0 mm/memcontrol.c:2646 __memcg_kmem_charge_page+0x9d/0x170 mm/memcontrol.c:2673 __alloc_pages_noprof+0x1bc/0x340 mm/page_alloc.c:4770 alloc_pages_mpol_noprof+0xb8/0x260 mm/mempolicy.c:2269 alloc_pages_noprof+0xe1/0x100 mm/mempolicy.c:2349 vm_area_alloc_pages mm/vmalloc.c:3591 [inline] __vmalloc_area_node mm/vmalloc.c:3669 [inline] __vmalloc_node_range_noprof+0x6eb/0xe80 mm/vmalloc.c:3846 __kvmalloc_node_noprof+0x121/0x170 mm/util.c:667 ip_set_alloc+0x1f/0x30 net/netfilter/ipset/ip_set_core.c:261 hash_netiface_create+0x273/0x730 net/netfilter/ipset/ip_set_hash_gen.h:1568 ip_set_create+0x359/0x8a0 net/netfilter/ipset/ip_set_core.c:1109 nfnetlink_rcv_msg+0x4a9/0x570 net/netfilter/nfnetlink.c:302 netlink_rcv_skb+0x12c/0x230 net/netlink/af_netlink.c:2542 nfnetlink_rcv+0x16c/0x15d0 net/netfilter/nfnetlink.c:667 netlink_unicast_kernel net/netlink/af_netlink.c:1321 [inline] netlink_unicast+0x599/0x670 net/netlink/af_netlink.c:1347 netlink_sendmsg+0x5cc/0x6e0 net/netlink/af_netlink.c:1891 sock_sendmsg_nosec net/socket.c:711 [inline] __sock_sendmsg+0x140/0x180 net/socket.c:726 ____sys_sendmsg+0x312/0x410 net/socket.c:2583 ___sys_sendmsg net/socket.c:2637 [inline] __sys_sendmsg+0x19d/0x230 net/socket.c:2669 __do_sys_sendmsg net/socket.c:2674 [inline] __se_sys_sendmsg net/socket.c:2672 [inline] __x64_sys_sendmsg+0x46/0x50 net/socket.c:2672 x64_sys_call+0x2734/0x2dc0 arch/x86/include/generated/asm/syscalls_64.h:47 do_syscall_x64 arch/x86/entry/common.c:52 [inline] do_syscall_64+0xc9/0x1c0 arch/x86/entry/common.c:83 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f2beeca5d29 Code: ff ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 40 00 48 89 f8 48 89 f7 48 89 d6 48 89 ca 4d 89 c2 4d 89 c8 4c 8b 4c 24 08 0f 05 <48> 3d 01 f0 ff ff 73 01 c3 48 c7 c1 a8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f2bed317038 EFLAGS: 00000246 ORIG_RAX: 000000000000002e RAX: ffffffffffffffda RBX: 00007f2beee95fa0 RCX: 00007f2beeca5d29 RDX: 0000000000000000 RSI: 0000000020000040 RDI: 0000000000000007 RBP: 00007f2beed21b08 R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 0000000000000000 R14: 00007f2beee95fa0 R15: 00007ffddb8444d8 memory: usage 307200kB, limit 307200kB, failcnt 5012 memory+swap: usage 313960kB, limit 9007199254740988kB, failcnt 0 kmem: usage 231004kB, limit 9007199254740988kB, failcnt 0 Memory cgroup stats for /syz0: cache 76734464 rss 1044480 shmem 76734464 mapped_file 0 dirty 0 writeback 0 workingset_refault_anon 3934 workingset_refault_file 9444 swap 6922240 swapcached 245760 pgpgin 895842 pgpgout 876793 pgfault 611086 pgmajfault 605 inactive_anon 77225984 active_anon 798720 inactive_file 0 active_file 0 unevictable 0 hierarchical_memory_limit 314572800 hierarchical_memsw_limit 9223372036854771712 total_cache 76734464 total_rss 1044480 total_shmem 76734464 total_mapped_file 0 total_dirty 0 total_writeback 0 total_workingset_refault_anon 3934 total_workingset_refault_file 9444 total_swap 6922240 total_swapcached 245760 total_pgpgin 895842 total_pgpgout 876793 total_pgfault 611086 total_pgmajfault 605 total_inactive_anon 77225984 total_active_anon 798720 total_inactive_file 0 total_active_file 0 total_unevictable 0 oom-kill:constraint=CONSTRAINT_MEMCG,nodemask=(null),cpuset=/,mems_allowed=0,oom_memcg=/syz0,task_memcg=/syz0,task=syz.0.4942,pid=17295,uid=0 Memory cgroup out of memory: Killed process 17295 (syz.0.4942) total-vm:93384kB, anon-rss:916kB, file-rss:22344kB, shmem-rss:0kB, UID:0 pgtables:124kB oom_score_adj:1000