WARNING: CPU: 0 PID: 7196 at net/ipv4/ipmr.c:440 ipmr_free_table net/ipv4/ipmr.c:440 [inline]
WARNING: CPU: 0 PID: 7196 at net/ipv4/ipmr.c:440 ipmr_rules_exit.isra.0+0x127/0x1b0 net/ipv4/ipmr.c:361
CPU: 5 UID: 0 PID: 7234 Comm: syz.6.767 Not tainted 6.14.0 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
Call Trace:
 <TASK>
 __dump_stack lib/dump_stack.c:94 [inline]
 dump_stack_lvl+0xfa/0x120 lib/dump_stack.c:120
 fail_dump lib/fault-inject.c:73 [inline]
 should_fail_ex+0x4d5/0x5e0 lib/fault-inject.c:174
 should_fail_alloc_page+0xe0/0x110 mm/fail_page_alloc.c:44
 prepare_alloc_pages mm/page_alloc.c:4515 [inline]
 __alloc_frozen_pages_noprof+0x1df/0x670 mm/page_alloc.c:4729
 alloc_pages_mpol+0xee/0x340 mm/mempolicy.c:2270
 folio_alloc_mpol_noprof+0x38/0x2a0 mm/mempolicy.c:2289
 shmem_alloc_folio+0x11b/0x140 mm/shmem.c:1863
 shmem_alloc_and_add_folio mm/shmem.c:1902 [inline]
 shmem_get_folio_gfp.isra.0+0x4e8/0x1410 mm/shmem.c:2545
 shmem_get_folio mm/shmem.c:2651 [inline]
 shmem_write_begin+0x151/0x2e0 mm/shmem.c:3301
 generic_perform_write+0x3b9/0x7e0 mm/filemap.c:4102
 shmem_file_write_iter+0x111/0x140 mm/shmem.c:3477
 new_sync_write fs/read_write.c:586 [inline]
 vfs_write fs/read_write.c:679 [inline]
 vfs_write+0xb8e/0x10e0 fs/read_write.c:659
 ksys_write+0x122/0x240 fs/read_write.c:731
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc3/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7f0342a5325f
Code: 89 54 24 18 48 89 74 24 10 89 7c 24 08 e8 79 0d 03 00 48 8b 54 24 18 48 8b 74 24 10 41 89 c0 8b 7c 24 08 b8 01 00 00 00 0f 05 <48> 3d 00 f0 ff ff 77 31 44 89 c7 48 89 44 24 08 e8 bc 0d 03 00 48
RSP: 002b:00007f0341096d60 EFLAGS: 00000293 ORIG_RAX: 0000000000000001
RAX: ffffffffffffffda RBX: 0000000000000004 RCX: 00007f0342a5325f
RDX: 0000000000040000 RSI: 00007f0338c77000 RDI: 0000000000000004
RBP: 00007f0338c77000 R08: 0000000000000000 R09: 000000000000041b
R10: 000000000000041b R11: 0000000000000293 R12: 0000000000000000
R13: 00007f0341096e2c R14: 00007f0341096e30 R15: 0000200000000902
 </TASK>
Modules linked in:
CPU: 0 UID: 0 PID: 7196 Comm: syz.0.756 Not tainted 6.14.0 #2
Hardware name: QEMU Standard PC (i440FX + PIIX, 1996), BIOS rel-1.16.3-0-ga6ed6b701f0a-prebuilt.qemu.org 04/01/2014
RIP: 0010:ipmr_free_table net/ipv4/ipmr.c:440 [inline]
RIP: 0010:ipmr_rules_exit.isra.0+0x127/0x1b0 net/ipv4/ipmr.c:361
Code: 00 00 00 00 00 fc ff df 48 c1 ea 03 80 3c 02 00 75 77 48 c7 03 00 00 00 00 5b 5d 41 5c 41 5d e9 ca 3a 0b fd e8 ba 88 6d fd 90 <0f> 0b 90 eb 99 e8 af 88 6d fd 0f b6 2d fa 67 15 02 31 ff 89 ee e8
RSP: 0018:ffff888121ac7c10 EFLAGS: 00010246
RAX: 0000000000000000 RBX: ffff88811bc74d00 RCX: ffffffffa56505e0
RDX: 0000000000000001 RSI: ffff888109cc3800 RDI: 0000000000000002
RBP: ffff888147808000 R08: 0000000000000000 R09: ffffed102378e8ca
R10: ffffed102378e8c9 R11: ffff88811bc7464f R12: 0000000000000001
R13: ffff88811bc74500 R14: dffffc0000000000 R15: fffffbfff4ecfc54
FS:  00007fa329d26640(0000) GS:ffff8881f6a00000(0000) knlGS:0000000000000000
CS:  0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: 0000200000531000 CR3: 0000000153372005 CR4: 0000000000770ef0
PKRU: 80000000
Call Trace:
 <TASK>
 ipmr_net_exit_batch+0x57/0xa0 net/ipv4/ipmr.c:3160
 ops_exit_list.isra.0+0x121/0x170 net/core/net_namespace.c:177
 setup_net+0x4a5/0x7c0 net/core/net_namespace.c:394
 copy_net_ns+0x2e3/0x640 net/core/net_namespace.c:516
 create_new_namespaces+0x3f6/0xaf0 kernel/nsproxy.c:110
 unshare_nsproxy_namespaces+0xc0/0x200 kernel/nsproxy.c:228
 ksys_unshare+0x410/0x940 kernel/fork.c:3342
 __do_sys_unshare kernel/fork.c:3413 [inline]
 __se_sys_unshare kernel/fork.c:3411 [inline]
 __x64_sys_unshare+0x31/0x40 kernel/fork.c:3411
 do_syscall_x64 arch/x86/entry/common.c:52 [inline]
 do_syscall_64+0xc3/0x1d0 arch/x86/entry/common.c:83
 entry_SYSCALL_64_after_hwframe+0x77/0x7f
RIP: 0033:0x7fa32b7047ed
Code: 02 b8 ff ff ff ff c3 66 0f 1f 44 00 00 f3 0f 1e fa 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:00007fa329d25fc8 EFLAGS: 00000246 ORIG_RAX: 0000000000000110
RAX: ffffffffffffffda RBX: 00007fa32b946080 RCX: 00007fa32b7047ed
RDX: 0000000000000000 RSI: 0000000000000000 RDI: 0000000040000400
RBP: 00007fa32b79db38 R08: 0000000000000000 R09: 0000000000000000
R10: 0000000000000000 R11: 0000000000000246 R12: 0000000000000000
R13: 00007fa32b94608c R14: 00007fa32b946118 R15: 00007fa329d06000
 </TASK>
irq event stamp: 5971
hardirqs last  enabled at (5983): [<ffffffffa2b2c008>] __up_console_sem+0x78/0x80 kernel/printk/printk.c:344
hardirqs last disabled at (5994): [<ffffffffa2b2bfed>] __up_console_sem+0x5d/0x80 kernel/printk/printk.c:342
softirqs last  enabled at (5876): [<ffffffffa29a526b>] softirq_handle_end kernel/softirq.c:407 [inline]
softirqs last  enabled at (5876): [<ffffffffa29a526b>] handle_softirqs+0x4eb/0x770 kernel/softirq.c:589
softirqs last disabled at (5871): [<ffffffffa29a6d06>] __do_softirq kernel/softirq.c:595 [inline]
softirqs last disabled at (5871): [<ffffffffa29a6d06>] invoke_softirq kernel/softirq.c:435 [inline]
softirqs last disabled at (5871): [<ffffffffa29a6d06>] __irq_exit_rcu kernel/softirq.c:662 [inline]
softirqs last disabled at (5871): [<ffffffffa29a6d06>] irq_exit_rcu+0xd6/0x110 kernel/softirq.c:678
---[ end trace 0000000000000000 ]---