kernel BUG in set_ps

ID	Workflow	Result	Correct	Bug	Created	Started	Finished	Revision	Error
4a901236-a24d-40ba-af9f-09db92ab7f0e	assessment-security	DenialOfService: ❌ Exploitable: ❌ FilesystemTrigger: ❌ NetworkTrigger: ❌ PeripheralTrigger: ❌ RemoteTrigger: ❌ Unprivileged: ❌ UserNamespace: ❌ VMGuestTrigger: ❌ VMHostTrigger: ❌	❓	kernel BUG in set_ps_flags	2026/05/31 07:09	2026/05/31 07:09	2026/05/31 08:27	6b4a844333e83556da95d61d7f207e7ef5cd4bc6
4bdc1f49-794c-4328-8f36-f1c8768ef28b	assessment-security		💥	kernel BUG in set_ps_flags	2026/05/14 14:36	2026/05/14 14:36	2026/05/14 14:38	6ccb967e465e832a7bfd7a116ad00d52a0923a5d	failed to run ["make" "KERNELVERSION=syzkaller" "KERNELRELEASE=syzkaller" "LOCALVERSION=-syzkaller" "-j" "32" "ARCH=x86_64" "CC=ccache clang" "LD=ld.lld" "O=/app/workdir/cache/build/9f7bc6f888dda60e12... truncated to first 200 bytes; open job for full error

do_group_exit+0xd5/0x2a0 kernel/exit.c:1119 get_signal+0x20ff/0x2210 kernel/signal.c:3037 arch_do_signal_or_restart+0x91/0x7a0 arch/x86/kernel/signal.c:337 __exit_to_user_mode_loop kernel/entry/common.c:64 [inline] exit_to_user_mode_loop+0x8b/0x4f0 kernel/entry/common.c:98 __exit_to_user_mode_prepare include/linux/irq-entry-common.h:207 [inline] syscall_exit_to_user_mode_prepare include/linux/irq-entry-common.h:238 [inline] syscall_exit_to_user_mode include/linux/entry-common.h:318 [inline] do_syscall_64+0x6f2/0xf80 arch/x86/entry/syscall_64.c:100 ------------[ cut here ]------------ kernel BUG at ./include/linux/page-flags.h:345! Oops: invalid opcode: 0000 [#1] SMP KASAN PTI CPU: 0 UID: 0 PID: 20691 Comm: syz.2.3195 Tainted: G L syzkaller #0 PREEMPT(full) Tainted: [L]=SOFTLOCKUP Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 04/18/2026 RIP: 0010:const_folio_flags include/linux/page-flags.h:345 [inline] RIP: 0010:folio_test_idle include/linux/page-flags.h:667 [inline] RIP: 0010:set_ps_flags+0x242/0x290 mm/util.c:1297 Code: 03 80 3c 02 00 0f 84 5f fe ff ff e8 28 19 24 00 e9 55 fe ff ff e8 de 4f b7 ff 48 c7 c6 c0 83 be 8b 48 89 df e8 af 78 05 00 90 <0f> 0b e8 d7 18 24 00 e9 ed fd ff ff e8 fd 18 24 00 e9 57 fe ff ff RSP: 0018:ffffc900032178f8 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffffea00025e92c0 RCX: ffffc90006233000 RDX: 0000000000080000 RSI: ffffffff82563428 RDI: ffff888035b384c4 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900032179d0 R13: 0000000000000001 R14: ffffea00025e8034 R15: dffffc0000000000 FS: 00007f0b021ee6c0(0000) GS:ffff888124374000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 0000001b3250cff8 CR3: 0000000078e50000 CR4: 00000000003526f0 Call Trace: <TASK> snapshot_page+0x463/0x560 mm/util.c:1333 get_kpage_count+0x94/0x240 fs/proc/page.c:50 kpage_read.isra.0+0x1b8/0x2b0 fs/proc/page.c:93 pde_read fs/proc/inode.c:308 [inline] proc_reg_read+0x120/0x330 fs/proc/inode.c:318 do_loop_readv_writev fs/read_write.c:849 [inline] do_loop_readv_writev fs/read_write.c:837 [inline] vfs_readv+0x5d8/0x8d0 fs/read_write.c:1022 do_readv+0x13e/0x340 fs/read_write.c:1082 do_syscall_x64 arch/x86/entry/syscall_64.c:63 [inline] do_syscall_64+0x10b/0xf80 arch/x86/entry/syscall_64.c:94 entry_SYSCALL_64_after_hwframe+0x77/0x7f RIP: 0033:0x7f0b03f9ce59 Code: ff c3 66 2e 0f 1f 84 00 00 00 00 00 0f 1f 44 00 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 e8 ff ff ff f7 d8 64 89 01 48 RSP: 002b:00007f0b021ee028 EFLAGS: 00000246 ORIG_RAX: 0000000000000013 RAX: ffffffffffffffda RBX: 00007f0b04215fa0 RCX: 00007f0b03f9ce59 RDX: 0000000100000007 RSI: 00002000000001c0 RDI: 0000000000000003 RBP: 00007f0b04032d6f R08: 0000000000000000 R09: 0000000000000000 R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000 R13: 00007f0b04216038 R14: 00007f0b04215fa0 R15: 00007ffd04bc4e58 </TASK> Modules linked in: ---[ end trace 0000000000000000 ]--- RIP: 0010:const_folio_flags include/linux/page-flags.h:345 [inline] RIP: 0010:folio_test_idle include/linux/page-flags.h:667 [inline] RIP: 0010:set_ps_flags+0x242/0x290 mm/util.c:1297 Code: 03 80 3c 02 00 0f 84 5f fe ff ff e8 28 19 24 00 e9 55 fe ff ff e8 de 4f b7 ff 48 c7 c6 c0 83 be 8b 48 89 df e8 af 78 05 00 90 <0f> 0b e8 d7 18 24 00 e9 ed fd ff ff e8 fd 18 24 00 e9 57 fe ff ff RSP: 0018:ffffc900032178f8 EFLAGS: 00010246 RAX: 0000000000080000 RBX: ffffea00025e92c0 RCX: ffffc90006233000 RDX: 0000000000080000 RSI: ffffffff82563428 RDI: ffff888035b384c4 RBP: 0000000000000001 R08: 0000000000000001 R09: 0000000000000000 R10: 0000000000000001 R11: 0000000000000000 R12: ffffc900032179d0 R13: 0000000000000001 R14: ffffea00025e8034 R15: dffffc0000000000 FS: 00007f0b021ee6c0(0000) GS:ffff888124374000(0000) knlGS:0000000000000000 CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033 CR2: 00007fc30c1ec4b8 CR3: 0000000078e50000 CR4: 00000000003526f0

Crashes (5):
Time	Kernel	Commit	Syzkaller	Config	Log	Report	VM info	Assets (help?)	Manager	Title
2026/05/16 16:48	upstream	6916d5703ddf	a15a64a6	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	kernel BUG in set_ps_flags
2026/04/16 12:22	upstream	1d51b370a0f8	4743f87d	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	kernel BUG in set_ps_flags
2026/04/15 13:44	upstream	1f5ffc672165	2b1eb0ca	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	kernel BUG in set_ps_flags
2026/04/12 15:07	upstream	f5459048c38a	38c8e246	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	kernel BUG in set_ps_flags
2026/03/11 15:19	upstream	b29fb8829bff	2d88ab01	.config	console log	report	info	[disk image] [vmlinux] [kernel image]	ci-qemu-gce-upstream-auto	kernel BUG in set_ps_flags

Crashes (5):

Assets (help?)